ADM485

Rev. F | Page 6 of 16

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

ADM485

TOP VIEW

(Not to Scale)

RO 1

RE 2

DE 3

DI 4

VCC

8

B

7

A

6

GND

5

Figure 2. Pin Configuration

Table 6. Pin Function Descriptions

Pin No.

Mnemonic

Function

1

RO

Receiver Output. When enabled, if A is greater than B by 200 mV, RO is high. If A is less than B by 200 mV, RO is low.

2

RE

Receiver Output Enable. A low level enables the receiver output, RO. A high level places it in a high impedance state.

3

DE

Driver Output Enable. A high level enables the driver differential outputs, A and B. A low level places it in a high

impedance state.

4

DI

Driver Input. When the driver is enabled, a logic low on DI forces A low and B high, while a logic high on DI forces

A high and B low.

5

GND

Ground Connection, 0 V.

6

A

Noninverting Receiver Input A/Driver Output A.

7

B

Inverting Receiver Input B/Driver Output B.

8

VCC

Power Supply, 5 V ± 5%.