LT1330

Features:

`3V Logic Interface
`ESD Protection over ±10kV
`Uses Small Capacitors: 0.1mF, 0.2mF, 1.0mF
`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
`60mA Supply Current in Shutdown
`Available in SO and SSOP Packages


Application

·Notebook Computers
·Palmtop Computers


Pinout




Specifications

Supply Voltage (V_CC) ................................................ 6V
Supply Voltage (V_L) .................................................. 6V
V+ ........................................................................ 13.2V
V ...................................................................... 13.2V
Input Voltage
Driver ........................................................... V to V+
Receiver ................................................ 30V to 30V
Output Voltage
Driver .................................................... 30V to 30V
Receiver ...................................... 0.3V to VL + 0.3V
Short-Circuit Duration
V+ ................................................................... 30 sec
V ................................................................... 30 sec
Driver Output .............................................. Indefinite
Receiver Output .......................................... Indefinite
Operating Temperature Range
LT1330I ............................................. 40 to 85
LT1330C ................................................. 0 to 70
Storage Temperature Range ................ 65 to 150
Lead Temperature (Soldering, 10 sec)................. 300


Description

The LT®1330 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.