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SN65HVD230,SN65HVD231,SN65HVD232

SLOS346M–MARCH2001–REVISED MAY2015

SN65HVD230x3.3-V CAN Bus Transceivers

1Features2Applications

?Operates with a single3.3V Supply?Industrial Automation,Control,Sensors and Drive

Systems

?Compatible With ISO11898-2Standard

?Motor and Robotic Control

?Low Power Replacement for the PCA82C250

Footprint?Building and Climate Control(HVAC)

?Bus Pin ESD Protection Exceeds±16kV HBM?Telecom and Basestation Control and Status ?High Input Impedance Allows for Up to120Nodes?CAN Bus Standards Such as CANopen, on a Bus DeviceNet,and CAN Kingdom

?Adjustable Driver Transition Times for Improved

3Description

Emissions Performance

The SN65HVD230,SN65HVD231,and SN65HVD232–SN65HVD230and SN65HVD231

controller area network(CAN)transceivers are ?SN65HVD230:Low Current Standby Mode

compatible to the specifications of the ISO11898-2–370μA Typical High Speed CAN Physical Layer standard

(transceiver).These devices are designed for data ?SN65HVD231:Ultra Low Current Sleep Mode

rates up to1megabit per second(Mbps),and include –40nA Typical

many protection features providing device and CAN ?Designed for Data Rates(1)up to1Mbps network robustness.The SN65HVD23x transceivers

?Thermal Shutdown Protection are designed for use with the Texas Instruments3.3

VμPs,MCUs and DSPs with CAN controllers,or with ?Open Circuit Fail-Safe Design

equivalent protocol controller devices.The devices ?Glitch Free Power Up and Power Down Protection

are intended for use in applications employing the for Hot Plugging Applications CAN serial communication physical layer in

(1)The signaling rate of a line is the number of voltage accordance with the ISO11898standard.

transitions that are made per second expressed in the units

bps(bits per second).Device Information(1)

PART NUMBER PACKAGE BODY SIZE(NOM)

SN65HVD230

SN65HVD231SOIC(8) 4.90mm×3.91mm

SN65HVD232

(1)For all available packages,see the orderable addendum at

the end of the datasheet.

Equivalent Input and Output Schematic Diagrams

GND

SN65HVD230,SN65HVD231,SN65HVD232

SLOS346M–MARCH2001–REVISED https://www.doczj.com/doc/5f9174911.html,

Table of Contents

1Features..................................................................110Detailed Description. (18)

10.1Overview (18)

2Applications (1)

10.2Functional Block Diagram (18)

3Description (1)

10.3Feature Description (19)

4Revision History (2)

10.4Device Functional Modes (19)

5Description(continued) (3)

11Application and Implementation (24)

6Device Comparison Table (3)

11.1Application Information (24)

7Pin Configuration and Functions (4)

11.2Typical Application (25)

8Specifications (4)

11.3System Example (29)

8.1Absolute Maximum Ratings (4)

12Power Supply Recommendations (31)

8.2ESD Ratings (5)

13Layout (32)

8.3Recommended Operating Conditions (5)

13.1Layout Guidelines (32)

8.4Thermal Information (5)

13.2Layout Example (33)

8.5Electrical Characteristics:Driver (6)

14Device and Documentation Support (34)

8.6Electrical Characteristics:Receiver (6)

14.1Related Links (34)

8.7Switching Characteristics:Driver (7)

14.2Trademarks (34)

8.8Switching Characteristics:Receiver (7)

14.3Electrostatic Discharge Caution (34)

8.9Switching Characteristics:Device (7)

14.4Glossary (34)

8.10Device Control-Pin Characteristics (8)

15Mechanical,Packaging,and Orderable

8.11Typical Characteristics (9)

Information (34)

9Parameter Measurement Information (12)

4Revision History

NOTE:Page numbers for previous revisions may differ from page numbers in the current version.

Changes from Revision L(January2015)to Revision M Page ?Changed Figure44title From:"Layout Example Schematic"To:"SN65HVD23x Board Layout" (33)

Changes from Revision K(February2011)to Revision L Page ?Added Pin Configuration and Functions section,ESD Ratings table,Feature Description section,Device Functional Modes,Application and Implementation section,Power Supply Recommendations section,Layout section,Device and Documentation Support section,and Mechanical,Packaging,and Orderable Information section (1)

?Changed the list of Features,Applications,and Description (1)

?Added THERMAL SHUTDOWN TEMPERATURE AND HYSTERESIS in the Recommended Operating Conditions table.5?Added the THERMAL SHUTDOWN paragraph to the Application Information section (19)

?Added Figure34and Figure35 (24)

?Added the CAN TERMINATION paragraph to the Application Information section (25)

?Added the BUS LOADING,LENGTH AND NUMBER OF NODES paragraph to the Application Information section (27)

Changes from Revision J(January2009)to Revision K Page ?Replaced the DISSIPATION RATING TABLE with the Thermal Information table (5)

Changes from Revision I(October2007)to Revision J Page ?Deleted Low-to-High Propagation Delay Time vs Common-Mode Input Voltage Characteristics (11)

?Deleted Driver Schematic Diagram (11)

?Added Figure38 (31)

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5Description(continued)

Designed for operation in especially harsh environments,these devices feature cross wire protection,loss of ground and overvoltage protection,overtemperature protection,as well as wide common mode range of operation.

The CAN transceiver is the CAN physical layer and interfaces the single ended host CAN protocol controller with the differential CAN bus found in industrial,building automation,and automotive applications.These devices operate over a-2V to7V common mode range on the bus,and can withstand common mode transients of±25 V.

The R S pin(pin8)on the SN65HVD230and SN65HVD231provides three different modes of operation:high speed mode,slope control mode,and low-power mode.The high speed mode of operation is selected by connecting the R S pin to ground,allowing the transmitter output transistors to switch on and off as fast as possible with no limitation on the rise and fall slopes.The rise and fall slopes can also be adjusted by connecting a resistor in series between the R S pin and ground.The slope will be proportional to the pin's output current.With a resistor value of10k?the device will have a slew rate of~15V/μs,and with a resistor value of100k?the device will have a slew rate of~2V/μs.See Application Information for more information.

The SN65HVD230enters a low current standby mode(listen only)during which the driver is switched off and the receiver remains active if a high logic level is applied to the R S pin.This mode provides a lower power consumption mode than normal mode while still allowing the CAN controller to monitor the bus for activity indicating it should return the transceiver to normal mode or slope control mode.The host controller(MCU,DSP) returns the device to a transmitting mode(high speed or slope control)when it wants to transmit a message to the bus or if during standby mode it received bus traffic indicating the need to once again be ready to transmit. The difference between the SN65HVD230and the SN65HVD231is that both the driver and the receiver are switched off in the SN65HVD231when a high logic level is applied to the R S pin.In this sleep mode the device will not be able to trasnmit messages to the bus or receive messages from the bus.The device will remain in sleep mode until it is reactivated by applying a low logic level on the R S pin.

6Device Comparison Table

INTEGRATED SLOPE

PART NUMBER(1)LOW POWER MODE V ref PIN T A MARKED AS:

CONTROL

SN65HVD230Standby mode Yes Yes VP230

SN65HVD231Sleep mode Yes Yes40°C to85°C VP231

SN65HVD232No standby or sleep mode No No VP232

(1)For the most current package and ordering information,see Mechanical,Packaging,and Orderable Information,or see the TI web site

at https://www.doczj.com/doc/5f9174911.html,.

GND

V CC

R R S CANH CANL V ref

SN65HVD230D (Marked as VP230)

SN65HVD231D (Marked as VP231)

(TOP VIEW)

NC – No internal connection

GND

V CC

R NC CANH CANL NC

SN65HVD232D (Marked as VP232)

(TOP VIEW)SN65HVD230,SN65HVD231,SN65HVD232

SLOS346M –MARCH 2001–REVISED MAY https://www.doczj.com/doc/5f9174911.html,

7Pin Configuration and Functions

Pin Functions

TYPE DESCRIPTION NAME

NO.CAN transmit data input (LOW for dominant and HIGH for recessive bus states),also called TXD,driver D

1I input GND

2GND Ground connection V CC

3Supply Transceiver 3.3V supply voltage CAN receive data output (LOW for dominant and HIGH for recessive bus states),also called RXD,receiver R

4O output V ref

O SN65HVD230and SN65HVD231:V CC /2reference output pin 5NC

NC SN65HVD232:No Connect CANL

6I/O Low level CAN bus line CANH

7I/O High level CAN bus line SN65HVD230and SN65HVD231:Mode select pin:strong pull down to GND =high speed mode,strong R S

I pull up to V CC =low power mode,10k Ωto 100k Ωpull down to GND =slope control mode 8NC I SN65HVD232:No Connect

8Specifications

8.1Absolute Maximum Ratings

over operating free-air temperature range (unless otherwise noted)(1)(2)

MIN

MAX UNIT Supply voltage,V CC

–0.36V Voltage at any bus terminal (CANH or CANL)

–416V Voltage input,transient pulse,CANH and CANL,through 100?(see Figure 24)

–2525V Digital Input and Output voltage,V I (D or R)

–0.5V CC +0.5V Receiver output current,I O

–1111mA Continuous total power dissipation

See Thermal Information Storage temperature,T stg

–4085°C (1)

Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device.These are stress ratings only,and functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions is not implied.Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.(2)

All voltage values,except differential I/O bus voltages,are with respect to network ground terminal.4Submit Documentation Feedback Copyright ?2001–2015,Texas Instruments Incorporated

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8.2ESD Ratings

VALUE UNIT

Human body model(HBM),per ANSI/ESDA/JEDEC JS-CANH,CANL and GND±16000 Electrostatic001(1)

V(ESD)All pins±4000V discharge

Charged-device model(CDM),per JEDEC specification JESD22-C101(2)±1000

(1)JEDEC document JEP155states that500-V HBM allows safe manufacturing with a standard ESD control process.

(2)JEDEC document JEP157states that250-V CDM allows safe manufacturing with a standard ESD control process.

8.3Recommended Operating Conditions

MIN NOM MAX UNIT Supply voltage,V CC3 3.6V Voltage at any bus terminal(common mode)V IC–2(1)7V Voltage at any bus terminal(separately)V I–2.57.5V High-level input voltage,V IH D,R2V Low-level input voltage,V IL D,R0.8V Differential input voltage,V ID(see Figure22)–66V Input voltage,V(Rs)0V CC V Input voltage for standby or sleep,V(Rs)0.75V CC V CC V Wave-shaping resistance,Rs0100k?

Driver–40

High-level output current,I OH mA

Receiver–8

Driver48

Low-level output current,I OL mA

Receiver8 Thermal shutdown temperature165

Thermal shutdown hysteresis10°C Operating free-air temperature,T A–4085

(1)The algebraic convention,in which the least positive(most negative)limit is designated as minimum is used in this data sheet.

8.4Thermal Information

SN65HVD230SN65HVD231SN65HVD232

THERMAL METRIC(1)D UNIT

8PINS

RθJA Junction-to-ambient thermal resistance76.8101.5101.5

RθJC(top)Junction-to-case(top)thermal resistance33.443.343.3

RθJB Junction-to-board thermal resistance15.342.242.4°C/W

ψJT Junction-to-top characterization parameter 1.4 4.8 4.8

ψJB Junction-to-board characterization parameter14.941.841.8

(1)For more information about traditional and new thermal metrics,see the Semiconductor and IC Package Thermal Metrics application

report,SPRA953.

SN65HVD230,SN65HVD231,SN65HVD232

SLOS346M –MARCH 2001–REVISED MAY https://www.doczj.com/doc/5f9174911.html,

8.5Electrical Characteristics:Driver

over recommended operating conditions (unless otherwise noted)

PARAMETER

TEST CONDITIONS MIN TYP (1)MAX UNIT V I =0V,CANH 2.45V CC V OH

Dominant See Figure 18and CANL 0.5 1.25Figure 20Bus output

V voltage

V I =3V,CANH 2.3V OL

Recessive See Figure 18and CANL 2.3Figure 20V I =0V,See Figure 18 1.523V OD(D)

Dominant V V I =0V,See Figure 19 1.223Differential output voltage V I =3V,See Figure 18–120012mV V OD(R)

Recessive V I =3V,No load –0.5–0.20.05V I IH

High-level input current V I =2V –30μA I IL

Low-level input current V I =0.8V –30μA V CANH =-2V –250250I OS

Short-circuit output current mA V CANL =7V –250250C o Output capacitance See receiver

Standby SN65HVD230

V (Rs)=V CC 370600μA Sleep SN65HVD231

V (Rs)=V CC ,D at V CC 0.041Supply I CC

current Dominant

V I =0V,No load Dominant 1017All devices mA Recessive V I =V CC ,No load Recessive 1017(1)All typical values are at 25°C and with a 3.3-V supply.

8.6Electrical Characteristics:Receiver

over recommended operating conditions (unless otherwise noted)

PARAMETER

TEST CONDITIONS MIN TYP (1)MAX UNIT V IT+

Positive-going input threshold voltage 750900mV See Table 1V IT-

Negative-going input threshold voltage 500650mV V hys

Hysteresis voltage (V IT+–V IT–)100V OH

High-level output voltage –6V ≤V ID ≤500mV,I O =–8mA,See Figure 22 2.4V V OL Low-level output voltage 900mV ≤V ID ≤6V,I O =8mA,See Figure 22

0.4V IH =7V

100250μA V IH =7V,

V CC =0V 100350Other input at 0V,I I Bus input current D =3V V IH =-2V

–200–30μA V IH =-2V,

V CC =0V –100–20Pin-to-ground,V (D)=3V,C I

CANH,CANL input capacitance 32pF V I =0.4sin(4E6πt)+0.5V Pin-to-pin,V (D)=3V,C Diff

Differential input capacitance 16pF V I =0.4sin(4E6πt)+0.5V R Diff

Differential input resistance Pin-to-pin,V (D)=3V 4070100k ?R I

CANH,CANL input resistance 203550k ?I CC

Supply current See driver (1)All typical values are at 25°C and with a 3.3-V supply.

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8.7Switching Characteristics:Driver

over recommended operating conditions(unless otherwise noted)

TEST

PARAMETER MIN TYP MAX UNIT

CONDITIONS

SN65HVD230AND SN65HVD231

V(Rs)=0V3585 Propagation delay time,low-to-high-level

t PLH R S with10k?to ground70125ns output

R S with100k?to ground500870

V(Rs)=0V70120 Propagation delay time,high-to-low-level

t PHL R S with10k?to ground130180ns output

R S with100k?to ground8701200

V(Rs)=0V35

C L=50pF,

t sk(p)Pulse skew(|t PHL-t PLH|)R S with10k?to ground60ns

See Figure21

R S with100k?to ground370

t r Differential output signal rise time2550100ns

V(Rs)=0V

t f Differential output signal fall time405580ns

t r Differential output signal rise time80120160ns

R S with10k?to ground

t f Differential output signal fall time80125150ns

t r Differential output signal rise time6008001200ns

R S with100k?to ground

t f Differential output signal fall time6008251000ns

SN65HVD232

t PLH Propagation delay time,low-to-high-level output3585

t PHL Propagation delay time,high-to-low-level output70120

C L=50pF,

t sk(p)Pulse skew(|t PHL-t PLH|)35ns

See Figure21

t r Differential output signal rise time2550100

t f Differential output signal fall time405580

8.8Switching Characteristics:Receiver

over recommended operating conditions(unless otherwise noted)

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

t PLH Propagation delay time,low-to-high-level output3550ns

t PHL Propagation delay time,high-to-low-level output See Figure233550ns

t sk(p)Pulse skew(|t PHL-t PLH|)10ns

t r Output signal rise time 1.5ns

See Figure23

t f Output signal fall time 1.5ns 8.9Switching Characteristics:Device

over recommended operating conditions(unless otherwise noted)

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

V(Rs)=0V,See Figure2670115 Total loop delay,driver input to receiver

t(LOOP1)R S with10k?to ground,See Figure26105175ns output,recessive to dominant

R S with100k?to ground,See Figure26535920

V(Rs)=0V,See Figure26100135 Total loop delay,driver input to receiver

t(LOOP2)R S with10k?to ground,See Figure26155185ns output,dominant to recessive

R S with100k?to ground,See Figure26830990 Copyright?2001–2015,Texas Instruments Incorporated Submit Documentation Feedback7

SN65HVD230,SN65HVD231,SN65HVD232

SLOS346M–MARCH2001–REVISED https://www.doczj.com/doc/5f9174911.html,

8.10Device Control-Pin Characteristics

over recommended operating conditions(unless otherwise noted)

PARAMETER TEST CONDITIONS MIN TYP(1)MAX UNIT SN65HVD230wake-up time from standby mode

0.55 1.5μs

with R S

t(WAKE)See Figure25

SN65HVD231wake-up time from sleep mode

35μs with R S

-5μA

V ref Reference output voltage V

-50μA

I(Rs)Input current for high-speed V(Rs)<1V–4500μA (1)All typical values are at25°C and with a3.3-V supply.

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8.11Typical Characteristics

SN65HVD230,SN65HVD231,SN65HVD232

SLOS346M–MARCH2001–REVISED https://www.doczj.com/doc/5f9174911.html, Typical Characteristics(continued)

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Typical Characteristics(continued)

≈ 2.3 V

Dominant

V OL

≈ 3 V V OH ≈ 1 V V OH

–2 V ≤ V TEST ≤ 7 V

0 V or 3 V SN65HVD230,SN65HVD231,SN65HVD232

SLOS346M –MARCH 2001–REVISED MAY https://www.doczj.com/doc/5f9174911.html,

9Parameter Measurement Information

Figure 18.Driver Voltage and Current Definitions

Figure 19.Driver V OD

Figure 20.Driver Output Voltage Definitions

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V IC +V CANH

)V CANL 2

Output V OD(R)V OD(D)SN65HVD230,SN65HVD231,SN65HVD232

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Parameter Measurement Information (continued)

The input pulse is supplied by a generator having the following characteristics:PRR ≤500kHz,50%duty cycle,t r ≤6ns,t f ≤6ns,Z o =50?.B.C L includes probe and jig capacitance.

Figure 21.Driver Test Circuit and Voltage Waveforms

Figure 22.Receiver Voltage and Current Definitions

C L = 15 pF

(see Note B)

V OL V OH SN65HVD230,SN65HVD231,SN65HVD232

SLOS346M –MARCH 2001–REVISED MAY https://www.doczj.com/doc/5f9174911.html,

Parameter Measurement Information (continued)

The input pulse is supplied by a generator having the following characteristics:PRR ≤500kHz,50%duty cycle,t r ≤6ns,t f ≤6ns,Z o =50?.B.C L includes probe and jig capacitance.

Figure 23.Receiver Test Circuit and Voltage Waveforms

Figure 24.Overvoltage Protection

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10 k ?

R Output V (Rs) 1.5 V

Generator

PRR = 150 kHz

50% Duty Cycle

t r , t f < 6 ns

Z o = 50 ?0 V

V CC SN65HVD230,SN65HVD231,SN65HVD232

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Parameter Measurement Information (continued)

Table 1.Receiver Characteristics Over Common Mode With V (Rs)=1.2V

V IC

V ID V CANH V CANL R OUTPUT

-2V

900mV -1.55V -2.45V L 7V

900mV 8.45V 6.55V L V OL 1V

6V 4V -2V L 4V

6V 7V 1V L -2V

500mV -1.75V -2.25V H 7V

500mV 7.25V 6.75V H 1V

-6V -2V 4V H V OH 4V

-6V 1V 7V H X X Open Open H (WAKE)Copyright ?2001–2015,Texas Instruments Incorporated Submit Documentation Feedback 15

60 ? ±1%

V CC

0 V V OH V OL SN65HVD230,SN65HVD231,SN65HVD232

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A.All V I input pulses are supplied by a generator having the following characteristics:t r or t f ≤6ns,Pulse Repetition

Rate (PRR)=125kHz,50%duty cycle.

Figure 26.t (LOOP)Test Circuit and Voltage Waveforms

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V CC

D Input

Input

Output CANH and CANL Outputs

V CC

Output

R Output Input

CANH and CANL Inputs

SN65HVD230,SN65HVD231,SN65HVD232

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Figure 27.Equivalent Input and Output Schematic Diagrams

CANL CANH R D

SN65HVD230, SN65HVD231

Logic Diagram (Positive Logic)

R S

V ref V CC

CANL CANH R

SN65HVD232Logic Diagram (Positive Logic)

SN65HVD230,SN65HVD231,SN65HVD232

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10Detailed Description

10.1Overview

ISO 11898family of standards are the international standard for high speed serial communication using the

controller area network (CAN)bus protocol and physical layers (transceivers).It supports multimaster operation,

real time control,programmable data rates up to 1Mbps,and powerful redundant error checking procedures that

provide reliable data transmission.It is suited for networking intelligent devices as well as sensors and actuators

within the rugged electrical environment of a machine chassis or factory floor.The SN65HVD23x family of 3.3V

CAN transceivers implement the lowest layers of the ISO/OSI reference model,the ISO11898-2standard.This is

the interface with the physical signaling output of the CAN controller of the Texas Instruments μPs,MCUs and

DSPs,such as TMS320Lx240x 3.3V DSPs,as illustrated in Figure 28.

Figure https://www.doczj.com/doc/5f9174911.html,yered ISO 11898Standard Architecture

10.2Functional Block Diagram

Figure 29.Logic Diagram (Positive Logic)

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GND

V CC

R SN65HVD230,SN65HVD231,SN65HVD232

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10.3Feature Description

The SN65HVD230/231/232are pin-compatible (but not functionally identical)with one another and,depending

upon the application,may be used with identical circuit boards.

These transceivers feature single 3.3V supply operation and standard compatibility with signaling rates up to 1

Mbps,±16kV HBM ESD protection on the bus pins,thermal shutdown protection,bus fault protection,and open-

circuit receiver failsafe.The fail-safe design of the receiver assures a logic high at the receiver output if the bus

wires become open circuited.

The bus pins are also maintained in a high-impedance state during low V CC conditions to ensure glitch-free

power-up and power-down bus protection for hot-plugging applications.This high-impedance condition also

means that an unpowered node does not disturb the bus.Transceivers without this feature usually have a very

low output impedance.This results in a high current demand when the transceiver is unpowered,a condition that

could affect the entire bus.

10.3.1V ref Voltage Reference

The V ref pin (pin 5)on the SN65HVD230and SN65HVD231is available as a V CC /2voltage reference.This pin

can be connected to the common mode point of a split termination to help further stabilize the common mode

voltage of the bus.If the V ref pin is not used it may be left floating.

10.3.2Thermal Shutdown

If a high ambient temperature or excessive output currents result in thermal shutdown,the driver will be disabled

and the bus pins become high impedance.During thermal shutdown the D pin to bus transmission path is

blocked and the CAN bus pins are high impedance and biased to a recessive level.Once the thermal shutdown

condition is cleared and the junction temperature drops below the thermal shutdown temperature the driver will

be reactivated and resume normal operation.During a thermal shutdown the receiver to R pin path remains

operational.

10.4Device Functional Modes

The R S pin (Pin 8)of the SN65HVD230and SN65HVD231provides three different modes of operation:high-

speed mode,slope-control mode,and low-power mode.

10.4.1High-Speed Mode

The high-speed mode can be selected by applying a logic low to the R S pin (pin 8).The high-speed mode of

operation is commonly employed in industrial applications.High-speed allows the output to switch as fast as

possible with no internal limitation on the output rise and fall slopes.If the high speed transitions are a concern

for emissions performance slope control mode can be used.

If both high speed mode and the low-power standby mode is to be used in the application,direct connection to a

μP,MCU or DSP general purpose output pin can be used to switch between a logic-low level (<1.2V)for high

speed operation,and the logic-high level (>0.75V CC )for standby.Figure 30shows a typical DSP connection,

and Figure 31shows the HVD230driver output signal in high-speed mode on the CAN bus.

Figure 30.R S (Pin 8)Connection to a TMS320LF2406/07for High Speed/Standby Operation

GND

CC R 10 k ?

1 Mbps

Driver Output

NRZ Data

SN65HVD230,SN65HVD231,SN65HVD232

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Device Functional Modes (continued)

Figure 31.Typical High Speed SN65HVD230Output Waveform into a 60-?Load

10.4.2Slope Control Mode

Electromagnetic compatibility is essential in many applications while still making use of unshielded twisted pair

bus cable to reduce system cost.Slope control mode was added to the SN65HVD230and SN65HVD231

devices to reduce the electromagnetic interference produced by the rise and fall times of the driver and resulting

harmonics.These rise and fall slopes of the driver outputs can be adjusted by connecting a resistor from R S (pin

8)to ground or to a logic low voltage,as shown in Figure 32.The slope of the driver output signal is proportional

to the pin's output current.This slope control is implemented with an external resistor value of 10k ?to achieve a

~15V/μs slew rate,and up to 100k ?to achieve a ~2.0V/μs slew rate as displayed in Figure 33.

Figure 32.Slope Control/Standby Connection to a DSP

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