AppleTalkTransceiver

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

* LocalTalk Peripherals

* Notebook/Palmtop Computers

* Battery-Powered Systems

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

* Single Chip Provides Complete LocalTalk©/AppleTalk© Port

* Low Power: ICC = 1.2mA Typ

* Shutdown Pin Reduces ICC to 30µA Typ

* Drivers Maintain High Impedance in Three-State or with Power Off