LTC1348 - 3.3V/5V Low Power RS232 3-Driver/5-Receiver Transceiver

Features

  • Low Supply Current: 600µA at 3.3V
  • Supply Current in Shutdown: 0.2µA
  • Supply Current in Receiver Alive Mode: 15µA
  • ESD Protection over ±10kV
  • Operates from a Single 3V to 5.5V Supply
  • Operates to 120kBaud with 0.1µF Flying Capacitors
  • Three-State Outputs Are High Impedance When Off
  • Output Overvoltage Does Not Force Current Back into Supplies
  • RS232 I/O Lines Can Be Forced to ±25V Without Damage
  • Flowthrough Architecture

Typical Application

LTC1348
LTC1348
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Description

The LTC™1348 is a 3-driver/5-receiver RS232 transceiver with very low supply current. The charge pump only requires five 0.1 µF capacitors. The LTC1348 provides full RS232 output levels when operated over a wide supply range of 3V to 5.5V The transceiver operates in one of four modes: Normal, Receiver Disable, Receiver Alive and Shutdown. In Normal or Receiver Disable mode, ICC is only 600µA at 3.3V and 800µA at 5V in the no load condition. In Shutdown mode, the supply current is further reduced to 0.2µA. In Receiver Alive mode, all five receivers are kept alive and the supply current is 15µA. All RS232 outputs assume a high impedance state in Shutdown or Receiver Alive mode or with the power off. The receiver outputs assume a high impedance state in Receiver Disable or with the power off. The LTC1348 is fully compliant with all data rate and overvoltage RS232 specifications. The transceiver operates up to 120kbaud with all drivers loaded with 1000pF, 3kohms. Both driver outputs and receiver inputs can be forced to �25V without damage and can survive multiple ±10kV ESD strikes.
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Packaging

SSOP-28, SW-28

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Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price (1-99) Price (1k)* RoHS Data
LTC1348CG SSOP 28 C $5.85 $4.65 View
LTC1348CG#PBF SSOP 28 C $5.85 $4.65 View
LTC1348CG#TR SSOP 28 C   $4.75 View
LTC1348CG#TRPBF SSOP 28 C   $4.75 View
LTC1348CSW SO 28 C $5.45 $4.40 View
LTC1348CSW#PBF SO 28 C $5.45 $4.40 View
LTC1348CSW#TR SO 28 C   $4.50 View
LTC1348CSW#TRPBF SO 28 C   $4.50 View
LTC1348IG SSOP 28 I $6.75 $5.35 View
LTC1348IG#PBF SSOP 28 I $6.75 $5.35 View
LTC1348IG#TR SSOP 28 I   $5.45 View
LTC1348IG#TRPBF SSOP 28 I   $5.45 View
LTC1348ISW SO 28 I $6.25 $5.05 View
LTC1348ISW#PBF SO 28 I $6.25 $5.05 View
LTC1348ISW#TR SO 28 I   $5.15 View
LTC1348ISW#TRPBF SO 28 I   $5.15 View
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* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

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Applications

  • Notebook Computers
  • Palmtop Computers
  • Printers
  • Portable Instruments
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