LTC1334IG

Series: -
Mounting Type: Surface Mount
Type: Transceiver
Voltage - Supply: 4.75 V ~ 5.25 V
Packaging: Tube
Package / Case: 28-SSOP (0.209", 5.30mm Width)
Supplier Device Package: 28-SSOP
Number of Drivers/Receivers: 3/3
Manufacturer: Linear Technology
Protocol: RS232, RS485


Features:

Four RS232 Transceivers or Two RS485 Transceivers on One Chip
Operates from a Single 5V Supply
Withstands Repeated ±10kV ESD Pulses
Uses Small Charge Pump Capacitors: 0.1mF
Low Supply Current: 8mA Typical
10mA Supply Current in Shutdown
Self-Testing Capability in Loopback Mode
Power-Up/Down Glitch-Free Outputs
Driver Maintains High Impedance in Three-State, Shutdown or with Power Off
Thermal Shutdown Protection
Receiver Inputs Can Withstand ±25V


Application

Low Power RS485/RS422/RS232/EIA562 Interface
Software-Selectable Multiprotocol Interface Port
Cable Repeaters
 Level Translators


Pinout




Specifications

Supply Voltage (VCC) ......................................... 6.5V
Input Voltage
Drivers ...................................  0.3V to (VCC + 0.3V)
Receivers .............................................  25V to 25V
ON/OFF, LB, SEL1, SEL2 ........  0.3V to (VCC + 0.3V)
Output Voltage
Drivers .................................................  18V to 18V
Receivers ...............................  0.3V to (VCC + 0.3V)
Short-Circuit Duration
Output ........................................................ Indefinite
VDD, VEE, C1+, C1, C2+, C2 ....................... 30 sec
Operating Temperature Range
Commercial ........................................... 0°C to 70°C
Industrial ............................................ 40°C to 85°C
Storage Temperature Range ............. 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................ 300°C


Description

The LTC®1334 is a low power CMOS bidirectional transceiver featuring two reconfigurable interface ports. It can be configured as two RS485 differential ports, as two dual RS232 single-ended ports or as one RS485 differential port and one dual RS232 single-ended port. An onboard charge pump requires four 0.1mF capacitors to generate boosted positive and negative supplies, allowing the RS232 drivers to meet the RS232 ±5V output swing requirement with only a single 5V supply. A shutdown mode reduces the ICC supply current to 10mA. 

The RS232 transceivers are in full compliance with RS232 specifications. The RS485 transceivers are in full compliance with RS485 and RS422 specifications. All interface drivers feature short-circuit and thermal shutdown protection. An enable pin allows RS485 driver outputs to forced into high impedance, which is maintained even when the outputs are forced beyond supply rails or power is off. Both driver outputs and receiver inputs feature ±10kV ESD protection. A loopback mode allows the driver outputs to be connected back to the receiver inputs for diagnostic self-test.



Parameters: 

Technical/Catalog Information
LTC1334IG
Vendor
Linear Technology 
Category
Integrated Circuits (ICs) 
  
Number of Drivers/Receivers
3/3
Type
Transceiver
Voltage - Supply
5V
Package / Case
28-SSOP
Packaging
Tube
Protocol
RS232, RS485
Drawing Number
161; 05-08-1640; G; 16
  
Lead Free Status
Contains Lead
  
RoHS Status
RoHS Non-Compliant
 
  
Other Names
  
            LTC1334IG
      LTC1334IG