ST1480AC Просмотр технического описания (PDF) - STMicroelectronics

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ST1480AC

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

STMicroelectronics 

ST1480AB

ST1480AC

3.3 V powered, 15 kV ESD protected,

up to 12 Mbps true RS-485/RS-422 transceiver

Features

■ ESD protection

– ±15 kV human body model

– ±8 kV IEC 1000-4-2 contact discharge

■ Operate from a single 3.3 V supply - no charge

pump required

■ Interoperable with 5 V logic

■ 1 µA low current shutdown mode max

■ Guaranteed 12 Mbps data rate

■ -7 to 12 common mode input voltage range

■ Half duplex versions available

■ Industry standard 75176 pinout

■ Current limiting and thermal shutdown for

driver overload protection

■ Guaranteed high receiver output state for

floating, shorted or terminated inputs with no

signal present

■ Allow up to 64 transceivers on the bus

DIP-8

SO-8

thermal shutdown circuitry that places the driver

outputs into a high-impedance state.

The ST1480A input has a true fail-safe feature

that guarantees a logic high output if both inputs

are open circuit, shorted together or in the

presence of a termination with no signal on the

bus.

Description

The ST1480A is ±15 kV ESD protected, 3.3 V low

power transceiver for RS-485 and RS-422

communications. The device contains one driver

and one receiver in half duplex configuration.

The ST1480A transmits and receives at a

guaranteed data rate of at least 12 Mbps.

All transmitter outputs and receiver inputs are

protected to ±15 kV using Human Body Model.

Driver is short-circuit current limited and is

protected against excessive power dissipation by

Figure 1. Device summary

Part number Temperature range

ST1480ACN

0 to 70 °C

ST1480ACDR

0 to 70 °C

ST1480ABDR

-40 to 85 °C

Package

DIP-8

SO-8 (tape & reel)

SO-8 (tape & reel)

Packaging

50 parts per tube / 40 tube per box

2500 parts per reel

2500 parts per reel

November 2007

Rev 3

1/22

www.st.com

22

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