ST1480AB Ver la hoja de datos (PDF) - STMicroelectronics

Número de pieza

componentes Descripción

Fabricante

ST1480AB

3.3 V powered, 15 kV ESD protected, up to 12 Mbps true RS-485/RS-422 transceiver

STMicroelectronics 

ST1480AB - ST1480AC

1

Pin configuration

Figure 1. Pin connections

Pin configuration

Pin n°

1

2

3

4

5

6

7

8

Symbol

RO

RE

DE

DI

GND

A

B

VCC

Figure 2. Pin description

Name and function

Receiver output. If A>B by 200 mV, RO is high; if A< B by 200 mV, RO is low

Receiver Output Enable. RO is enabled when RE is low; RO is high impedance when RE

is high. If RE is high and DE is low, the device enters a low power shutdown mode.

Driver Output Enable. The driver outputs are enabled by bringing DE high. They are high

impedance when DE is low. If RE is high DE is low, the device enters a low-power

shutdown mode. If the driver outputs are enabled, the part functions as line driver, while

they are high impedance, it functions as line receivers if RE is low.

Driver input. A low on DI forces output A low and output B high. Similarly, a high on DI

forces output A high and output B low

Ground

Non-inverting receiver input and non-inverting driver output

Inverting receiver input and inverting driver output

Supply voltage: VCC= 3 V to 3.6 V

DocID9101 Rev 4

3/21

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