ADM2483

Rev. 0 | Page 8 of 20

PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS

NC = NO CONNECT

ADM2483

TOP VIEW

(Not to Scale)

16

15

RxD

3

NC

14

RE

4

B

13

DE

5

A

12

TxD

6

NC

11

PV

7

NC

10

9

* PINS 2 AND 8 ARE INTERNALLY CONNECTED.

PINS 9 AND 15 ARE INTERNALLY CONNECTED.

Figure 2. Pin Configuration

Table 8. Pin Function Descriptions

Pin No.

Mnemonic

Description

1

Power Supply (Logic Side).

2, 8

Ground (Logic Side).

3

RxD

Receiver Output Data. This output is high when (A − B) > 200 mV, and low when (A − B) < −200 mV.

There is tristate output when the receiver is disabled, i.e., when RE is driven high.

4

RE

Receiver Enable Input. This is an active-low input. Driving this input low enables the receiver, and

driving it high disables the receiver.

5

DE

Driver Enable Input. Driving this input high enables the driver, and driving it low disables the driver.

6

TxD

Transmit Data Input. Data to be transmitted by the driver is applied to this input.

7

PV

Power Valid. Used during power-up and power-down. See the Applications Information section.

9, 15

Ground (Bus Side).

10, 14

NC

No Connect.

12

A

down, Pin A is put in a high impedance state to avoid overloading the bus.

13

B

Inverting Driver Output/Receiver Input.

16

Power Supply (Bus Side).