L9638D013TR Datasheet L9638D, L9638D013TR | P1-P3

1/14

L9638

October 2004

1 FEATURES

■ Single-wire transceiver for LIN-protocol

■ Transmission rate up to 20 kbaud

■ Operating power supply voltage range 6V ≤ Vs

≤ 26V (40V for transients)

■ Low quiescent current in sleep mode (typ.10µA)

■ Wake-up through LIN-bus, Enable input (from

µC CMOS compatible) or Wake-up input (edge

driven)

■ Wide input and output range -24V ≤ V

LIN

≤ Vs

■ Integrated pull/down/up resistors for LIN, TxD,

RxD, EN, INH

■ Inhibit output with low resistance (<40Ω) versus

Vs and short circuit protection

■ CMOS compatible TxD, RxD Interface

■ EMI robustness optimised

■ Thermal shutdown and LIN short circuit

protection

2 DESCRIPTION

The L9638 is a monolithic integrated circuit for

LIN-bus interface function between the protocol

handler in the controller and the physical bus in

automotive applications.

As well as it can be used in standard ISO 9141

systems.

SO-8

LIN BUS TRANSCEIVER

Figure 1. Block Diagram

TxD

WUP

RxD

LIN

INH

Internal

Voltage

Regulator

Int.5V

GND

Glitch

Filter

Glitch

Filter

VS_D

Control

Logic

Protection

VS_D

TxD

WUP

RxD

LIN

INH

Internal

Voltage

Regulator

Int.5V

GND

Glitch

Filter

TxD

WUP

RxD

LIN

INH

Internal

Voltage

Regulator

Int.5V

GND

Glitch

Filter

Glitch

Filter

VS_D

Control

Logic

Protection

VS_D

e 1.

Part Number Package

L9638D SO-8

L9638D013TR Tape & Reel

Rev. 4

Obsolete Product(s) - Obsolete Product(s)

L9638

2/14

Table 2. Pin Description

Figure 2. Pin Connection

Table 3. Absolute Maximum Ratings

Table 4. Thermal Data

Pin No. Pin Name Function

1 RxD Receive data Output

2 EN Enable Input

Digital control signal for low power modes

3 WUP Wake-Up Input

Local wake-up from sleep mode sensitive to positive and negative edges

4 TxD Transmit data Input

5 GND Ground

6 LIN Bidirectional I/O

7 Vs Supply voltage

8 INH Inhibit Output, battery related high side switch for controlling external Voltage

Regulator

Symbol Parameter Value Unit

Supply Voltage -0.3 to 40 V

LIM

Pin Voltage -24 to 40 V

INH ,

Pin Voltage -0.3 to 40 V

RxD ,

, EN Pin Voltage -0.3 to 6 V

ESD

HBM: all pins withstand ±2KV; pin 6 (LIN) is able to withstand

±8kV versus GND and +8/-5kV versus V

Symbol Parameter Value Unit

J_OP

Operating junction temperature -40 to150 °C

th j-amb

Thermal steady state junction to ambient resistance 145 K/W

J_SD

Thermal shutdown temperature 170 ±20 °C

stg

Storage temperature -55 to 150 °C

RxD

WUP

TxD GND

LIN

INH1

D04AT514

Obsolete Product(s) - Obsolete Product(s)

3/14

L9638

Table 5. Electrical Characteristics

= 6V to 26V; T

= -40 to 150 °C unless otherwise specified)

Item Symbol Parameter Test Condition Min. Typ. Max. Unit

Supplies

1.1 V

Supply Voltage 6 26 V

1.2 I

Sleep

Supply Vs Curent in sleep

mode

= V

EN low

10 30 µA

1.3 I

Short

Supply Vs Curent with bus

short circuit

= V

EN low

150 500 1700 µA

1.4 I

DStand-by

Supply Vs Current in Stand-

by Mode with bus recessive

LIN

= V

LINHigh

= V

ENLow

TxD

= V

TxDHigh

30 100 200 µA

1.5 I

DStand-by

Supply Vs Current in Stand-

by Mode with bus dominant

(Receive only Mode)

LIN

= V

LINLow

= V

ENLow

0.5 1.1 2.5 mA

1.6 Is

Normal

Supply Vs Current in

Normal Mode with bus

recessive

= V

ENHigh

LIN

= V

LINHigh

TxD

= V

TxDHigh

300 500 700 µA

1.7 Is

Normal

Supply Vs Current in

Normal Mode with bus

dominant

= V

ENHigh

LIN

= V

LINLow

TxD

= V

TxDLow

0.9 1.8 3.5 mA

LIN Bus Interface

2.1 V

BUSDom

Receive Threshold Voltage

recessive to dominant state

LIN

<18V 0.40.450.5 Vs

2.2 V

BUSRec

Receive Threshold Voltage

dominant to recessive state

LIN

≥8V 0.50.550.6 Vs

2.3 V

HYS

Receive Threshold

Hysteresis

BUSRec

-V

BUSDom

0.05 0.1 0.17 Vs

2.4 V

BUScnt

Tolerance centre value of

Receiver

(VBUS

Rec

+VBUS

Dom

)/2 0.475 0.5 0.525 Vs

2.5 I

LINON

Input Current dominant

state

TxD

= V

TxDLow

LIN

= V

40 100 160 mA

2.5.1 I

LINOff

Input Current recessive

state

TxD

= V

TxDHigh

LIN

= V

-10 10 µA

2.5.2 I

LINOff

Input Current recessive

state

TxD

= V

TxDHigh

;

= 12V;

LIN

= 0V

(Bus dominant )

-1 mA

2.6 V

LINDom

Drive Voltage dominant

state

TxD

= V

TxDLow

LIN

= 40mA

1.2 V

2.7 R

LIN

Output pull up resistor 20 30 47 kΩ

2.8 f

LIN-RxD

Transmission Frequency R

Vs-LIN

=1100Ω

LIN-GND

=10nF

20 kHz

2.9 d

VLIN/dt

Slew rate rising edge From 10% to 90% of V

LIN

123V/µs

Obsolete Product(s) - Obsolete Product(s)

P1-P3 P4-P6 P7-P9 P10-P12 P13-P14

L9638D013TR

Mfr. #:

Buy L9638D013TR

Manufacturer:

STMicroelectronics

Description:

IC TXRX MONOLITHIC LIN-BUS 8SOIC

Lifecycle:

New from this manufacturer.

Delivery:

DHL FedEx Ups TNT EMS

Payment:

T/T Paypal Visa MoneyGram Western Union

L9638D013TR

L9638D013TR

Products related to this Datasheet