ADM2484E datasheet(7/16 Pages) AD

Part #	ADM2484E

Description	500 kbps, ESD Protected, Half-/Full-Duplex, iCoupler, Isolated RS-485 Transceiver

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ADM2484E

Rev. 0 | Page 7 of

16

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

VDD1 1

GND1 2

RxD 3

RE 4

VDD2

16

GND2

15

A

14

B

13

DE 5

Z

12

TxD 6

Y

11

NC 7

NC

10

GND1 8

GND2

9

NC = NO CONNECT

ADM2484E

TOP VIEW

(Not to Scale)

Figure 2. Pin Configuration

Table 8. Pin Function Descriptions

Pin No.

Mnemonic

Description

1

VDD1

Power Supply (Logic Side). Decoupling capacitor to GND1 required; capacitor value should be between 0.01 μF and 0.1 μF.

2

GND1

Ground (Logic Side).

3

RxD

Receiver Output.

4

RE

Receiver Enable Input. Active low logic input. When this pin is low, the receiver is enabled; when this pin is high, the

receiver is disabled.

5

DE

Driver Enable Input. Active high logic input. When this pin is high, the driver (transmitter) is enabled; when this pin

is low, the driver is disabled.

6

TxD

Transmit Data.

7

NC

No Connect. This pin must be left floating.

8

GND1

Ground (Logic Side).

9

GND2

Ground (Bus Side).

10

NC

No Connect. This pin must be left floating.

11

Y

Driver Noninverting Output.

12

Z

Driver Inverting Output.

13

B

Receiver Inverting Input.

14

A

Receiver Noninverting Input.

15

GND2

Ground (Bus Side).

16

VDD2

Power Supply (Bus Side). Decoupling capacitor to GND2 required; capacitor value should be between 0.01 μF and 0.1 μF.

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