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LTC1349

Features: `Low Supply Current: 300A`Two Receivers Kept Alive in SHUTDOWN`ESD Protection Over ±10kV`Operates from a Single 5V Supply`Uses Small Capacitors: 0.1F`Operates to 120k Baud`Three-State Outputs Are High Impedance When Off`Output Overvoltage Does Not Force Current Back into Supplies`RS232 I...

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SeekIC No. : 004401525 Detail

LTC1349: Features: `Low Supply Current: 300A`Two Receivers Kept Alive in SHUTDOWN`ESD Protection Over ±10kV`Operates from a Single 5V Supply`Uses Small Capacitors: 0.1F`Operates to 120k Baud`Three-State Outp...

LTC1349 Data Sheet

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Part Number:
LTC1349
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/11/21

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Product Details

Description



Features:

`Low Supply Current: 300A
`Two Receivers Kept Alive in SHUTDOWN
`ESD Protection Over ±10kV
`Operates from a Single 5V Supply
`Uses Small Capacitors: 0.1F
`Operates to 120k Baud
`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
`Pin Compatible with LT1137A and LT1237
`Flowthrough Architecture


Application

· Notebook Computers
· Palmtop Computers


Pinout

Connection Diagram


Specifications

Supply Voltage (VCC) ............................................. 6V
Input Voltage
Driver ....................................... 0.3V to VCC + 0.3V
Receiver ............................................... 25V to 25V
On/Off Pin ................................ 0.3V to VCC + 0.3V
Output Voltage
Driver ................................................... 25V to 25V
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
Commercial (LTC1349C) ....................... 0°C to 70°C
Industrial (LTC1349I) ..................... 40°C to 85°C
Storage Temperature Range ........ 65°C to 150°C
Lead Temperature (Soldering, 10 sec)............. 300°C


Description

The LTC1349 is a 3-driver/5-receiver RS232 transceiver with very low supply current. In the no load condition, the supply current is only 300A. The charge pump only requires four 0.1F capacitors.

In SHUTDOWN mode, two receivers are kept alive and the supply current is 35A. All RS232 outputs assume a high impedance state in SHUTDOWN and with the power off.

The LTC1349 is fully compliant with all data rate and overvoltage RS232 specifications. The transceiver can operate up to 120k baud with a 2500pF, 3k   load. Both driver outputs and receiver inputs can be forced to ±25V without damage, and can survive multiple ±10kV ESD strikes.




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