MC33990D/DR2(2003) 데이터 시트보기 (PDF) - Freescale Semiconductor

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MC33990D/DR2
(Rev.:2003)

Enhanced Class B Serial Transceiver

Freescale Semiconductor 

Freescale Semiconductor, Inc.

SLEEP 11

GND 22

LOAD 33

BUS 44

88

Rx

77

Tx

66 4X/LOOP

55

VBAT

PIN FUNCTION DESCRIPTION

Pin

Pin Name

Description

1

SLEEP

Enables the transceiver when Logic 1 and disables the transceiver when Logic 0.

2

GND

Device ground pin.

3

LOAD

Accommodates an external pull-down resistor to ground to provide loss of ground protection.

4

BUS

Waveshaped SAE Standard J-1850 Class B transmitter output and receiver input.

5

VBAT

Provides device operating input power.

6

4X/ LOOP

Tristate input mode control; Logic 0 = normal waveshaping, Logic 1 = waveshaping disabled for 4X

transmitting, high impedance = loopback mode.

7

Tx

Serial data input (DI) from the microcontroller to be transmitted onto Bus.

8

Rx

Bus received serial data output (DO) sent to the microcontroller.

MOTOROLA ANALOG INTEGRATED CIRFCoUIrTMDEoVrICeEIDnAfoTArmation On This Product,

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33990

3

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