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LTC1323

Linear Technology
Part Number LTC1323
Manufacturer Linear Technology
Description Single 5V AppleTalk Transceiver
Published Mar 22, 2005
Detailed Description LTC1323 Single 5V AppleTalk Transceiver ® FEATURES s s s DESCRIPTIO s s s s s s s Single Chip Provides Complete Lo...
Datasheet PDF File LTC1323 PDF File

LTC1323
LTC1323

Overview
LTC1323 Single 5V AppleTalk Transceiver ® FEATURES s s s DESCRIPTIO s s s s s s s Single Chip Provides Complete LocalTalk®/AppleTalk Port Operates From a Single 5V Supply ESD Protection to ± 10kV on Receiver Inputs and Driver Outputs Low Power: ICC = 2.
4mA Typ Shutdown Pin Reduces ICC to 0.
5µA Typ Receiver Keep-Alive Function: ICC = 65µA Typ Differential Driver Drives Either Differential AppleTalk or Single-Ended EIA562 Loads Drivers Maintain High Impedance in Three-State or with Power Off Thermal Shutdown Protection Drivers are Short-Circuit Protected APPLICATI s s s S The LTC®1323 is a multi-protocol line transceiver designed to operate on AppleTalk or EIA562-compatible singleended networks while operating from a single 5V supply.
There are two versions of the LTC1323 available: a 16-pin version designed to connect to an AppleTalk network, and a 24-pin version which also includes the additional single-ended drivers and receivers necessary to create an Apple-compatible serial port.
An on-board charge pump generates a – 5V supply which can be used to power external devices.
Additionally, the 24-pin LTC1323 features a micropower keep-alive mode during which one of the single-ended receivers is kept active to monitor external wake-up signals.
The LTC1323 draws only 2.
4mA quiescent current when active, 65µA in receiver keepalive mode, and 0.
5µA in shutdown, making it ideal for use in battery-powered systems.
The differential driver can drive either differential AppleTalk loads or conventional single-ended loads.
The driver outputs three-state when disabled, during shutdown, in receiver keep-alive mode, or when the power is off.
The driver outputs will 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 ± 10kV.
LocalTalk Peripherals Notebook/Palmtop Computers Battery-Powered Systems , LTC and LT are registered trademarks of Linear Technolog...


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