LTC1323 Datasheet | Linear Technology

LTC1323 Single 5V Apple Talk Transceiver ® Features s s s DESCRIPTIO s s s s s s s Single Chip Provides plete Local Talk®/Apple Talk Port Operates From a Single 5V Supply ESD Protection to ± 10k V on Receiver Inputs and Driver Outputs Low Power: ICC = 2.4m A Typ Shutdown Pin Reduces ICC to 0.5µA Typ Receiver Keep-Alive Function: ICC = 65µA Typ Differential Driver Drives Either Differential Apple Talk 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 The LTC®1323 is a multi-protocol line transceiver designed to operate on Apple Talk or EIA562-patible 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 Apple Talk network, and a 24-pin version which also includes the additional single-ended drivers and receivers necessary to create an Apple-patible 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 2.4m A 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 Apple Talk 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 mon-mode voltages beyond the power supply rails. Both the driver outputs and receiver inputs are protected against ESD damage to ± 10k V. Local Talk Peripherals Notebook/Palmtop puters Battery-Powered Systems , LTC and LT are registered trademarks of Linear...