Analog Integrated Circuit Device Data

Freescale Semiconductor

3

33390

PIN CONNECTIONS

PIN CONNECTIONS

Figure 3. 33390 Pin Connections

Table 1. 33390 Pin Definitions

A functional description of each pin can be found in the Functional Pin Description section beginning on page 9.

Pin Number

Pin Name

Definition

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.

2

3

4

8

7

6

5

11

2

4

3

8

7

5

6

RX

TX

VBAT

4X/LOOP

SLEEP

GND

LOAD

BUS