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LT1330 - 5V RS232 Transceiver with 3V Logic Interface and One Receiver Active in Shutdown

The LT1330 is a three driver, five receiver RS232 transceiver with low supply current. Designed to interface with new 3V logic, the LT1330 operates with both a 5V power supply and a 3V logic power supply. The chip may be shut down to micropower operation with one receiver remaining active to monitor RS232 inputs such as ring detect from a modem. The LT1330 is fully compliant with all EIA RS232 specifications. Additionally, the RS232 line input and output pins are resilient to multiple ±10kV ESD strikes. This eliminates the need for costly TransZorbs on line pins for the RS232 part. The LT1330 operates to 120kbaud even driving high capacitive loads. During shutdown, driver and receiver outputs are at a high impedance state allowing devices to be paralleled.

Features 3V Logic Interface ESD Protection over ±10kV Uses Small Capacitors: 0.1µF, 0.2µF, 1.0µF One Low Power Receiver Remains Active While in SHUTDOWN Pin Compatible with LT1137A and LT1237 120kBaud Operation for RL = 3k, CL = 2500pF 250kBaud Operation for RL = 3k, CL = 1000pF CMOS Comparable Low Power: 30mW Easy PC Layout - Flowthrough Architecture Rugged Bipolar Design Outputs Assume a High Impedance State When Off or Powered Down Absolutely No Latchup 60µA Supply Current in Shutdown Available in SO and SSOP Packages Typical Application

Applications Notebook Computers Palmtop Computers Packaging