UTRS485

Preliminary

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

2 of 8

www.unisonic.com.tw

QW-R113-011.c

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MARKING

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PIN CONFIGURATION

1

2

3

4

8

7

6

5

RO

RE

DE

DI

B

A

GND

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PIN DESCRIPTION

PIN NO.

PIN NAME

DESCRIPTION

1

RO

Receiver output: if A>B by 200mV, RO will be high; if A<B by 200mV, RO will be low.

2

RE

Receiver output enable. RO is enable when RE is low; RO is high impedance when

RE

is high.

3

DE

Driver output enable. The driver outputs, Y and Z, are enabled by bringing DE high. They

are high impedance when DE is low. If the driver outputs are enabled, the parts function

as line drivers. While they are high impedance, they function as line receivers if RE is

low.

4

DI

Driver Input. A low on DI forces output Y low and output Z high. Similarly, a high on DI

forces output Y high and output Z low.

5

GND

Ground

6

A

Non-inverting receiver input and non-inverting driver output

7

B

Inverting receiver input and inverting driver output

8