LTC1320

Obsolete

AppleTalk^©Transceiver

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Overview

OBSOLETE: For Information Purposes Only. Contact Analog Devices for Potential Replacement.
Single Chip Provides Complete LocalTalk^©/AppleTalk^©Port
Low Power: I_CC = 1.2mA Typ
Shutdown Pin Reduces I_CC to 30µA Typ
Drivers Maintain High Impedance in Three-State or with Power Off

30ns Driver Propagation Delay Typ
5ns Driver Skew Typ
Thermal Shutdown Protection
Drivers are Short-Circuit Protected

OBSOLETE: For Information Purposes Only. Contact Analog Devices for Potential Replacement.

The LTC1320 is an RS422/RS562 line transceiver designed to operate on LocalTalk networks. It provides one differential RS422 driver, one single-ended RS562 driver, two single-ended RS562 receivers, and one differential RS422 receiver. The LTC1320 draws only 1.2mA quiescent current when active and 30µA in shutdown, making it ideal for use in battery-powered devices and other systems where power consumption is a primary concern.

The LTC1320 drivers are specified to drive ±2V into 100Ω. Additionally, the driver outputs three-state when disabled, during shutdown, or when the power is off; they maintain high impedance even with output common-mode voltages beyond the power supply rails. Both the driver outputs and receiver inputs are protected against ESD damage to beyond 5kV.

The LTC1320 is available in the 18-pin SOL package.

Applications