LT1237CNW

Series: -
Type: Transceiver
Protocol: RS232
Voltage - Supply: 4.5 V ~ 5.5 V
Number of Drivers/Receivers: 3/5
Mounting Type: Through Hole
Packaging: Tube
Manufacturer: Linear Technology
Package / Case: 28-DIP (0.600", 15.24mm)
Supplier Device Package: 28-PDIP


Features:

One Receiver Remains Active While in Shutdown
ESD Protection over ±15kV
Uses Small Capacitors: 0.1mF, 0.2mF, 1.0mF
60mA Supply Current in Shutdown
Pin Compatible with LT1137A
120kBaud Operation for RL = 3k, CL = 2500pF
250kBaud Operation for RL = 3k, CL = 1000pF
Operates to 120kBaud
CMOS Comparable Low Power 30mW
Operates from a Single 5V Supply
Easy PC Layout-Flowthrough Architecture
Rugged Bipolar Design
Outputs Assume a High Impedance State When Off or Powered Down
Absolutely No Latchup
Available in SO and SSOP Packages


Application

  Notebook Computers
 Palmtop Computers


Pinout




Specifications

Supply Voltage (VCC) ..................................................... 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 VCC + 0.3V
Short Circuit Duration
V+ ........................................................................... 30 sec
V .......................................................................... 30 sec
Driver Output ...................................................... Indefinite
Receiver Output ............................................. Indefinite
Operating Temperature Range
LT1237C ....................................................... 0°C to 70°C
Storage Temperature Range ................  65°C to 150°C
Lead Temperature (Soldering, 10 sec)..................... 300°C


Description

The LT®1237 is an advanced low power three driver, five receiver RS232 transceiver. Included on the chip is a shutdown pin for reducing supply current near zero. During shutdown one receiver remains active to detect incoming RS232 signals, for example, to wake up a system. 

The LT1237 is fully compliant with all EIA RS232 specifications. New ESD structures on the chip allow the LT1237 to survive multiple ±15kV strikes, eliminating the need for costly TransZorbs® on the RS232 line pins. 

The LT1237 operates in excess of 120kbaud even driving heavy capacitive loads. Two shutdown modes allow the driver outputs to be shut down separately from the receivers for more versatile control of the RS232 interface. During shutdown, drivers and receivers assume a high impedance state.



Parameters: 

Technical/Catalog Information
LT1237CNW
Vendor
Linear Technology
Category
Integrated Circuits (ICs) 
  
Number of Drivers/Receivers
3/5
Type
Transceiver
Voltage - Supply
4.5 V ~ 5.5 V
Package / Case
28-DIP (300 mil) 
Packaging
Tube
Protocol
RS232
Drawing Number
161; 05-08-1520; NW; 28
  
Lead Free Status
Contains Lead
  
RoHS Status
RoHS Non-Compliant
 
  
Other Names
  
            LT1237CNW
      LT1237CNW