Analog Devices LT1330 Product Info

• 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 R_L = 3k, C_L = 2500pF
• 250kBaud Operation for R_L = 3k, C_L = 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

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.

Applications