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LT1081

Features: Superior to CMOS Improved Speed: Operates over 120kBaud Improved Protection: Outputs Can Be Forcedto ±30V without Damage Three-State Outputs Are HighImpedance When Off Only Needs 1µF Capacitors Absolutely No Latchup CMOS Comparable Low Power: 60mW Can Power Additional RS232 Driver...

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LT1081: Features: Superior to CMOS Improved Speed: Operates over 120kBaud Improved Protection: Outputs Can Be Forcedto ±30V without Damage Three-State Outputs Are HighImpedance When Off Only Needs 1µ...

LT1081 Data Sheet

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Part Number:
LT1081
Supply Ability:
5000

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  • 1~5000
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  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

Superior to CMOS Improved Speed: Operates over 120kBaud Improved Protection: Outputs Can Be Forcedto ±30V without Damage Three-State Outputs Are HighImpedance When Off Only Needs 1µF Capacitors
Absolutely No Latchup
CMOS Comparable Low Power: 60mW
Can Power Additional RS232 Drivers: 10mA
Supply Current in Shutdown: 1µA
Available in SO Package
Available with or without Shutdown


Application

Portable Computers
Battery-Powered RS232 Systems
Power Supply Generator
Terminals
Modems


Pinout

Connection Diagram


Specifications

Supply Voltage (VCC) ............................................................... 6V
V+ ........................................................................................... 12V
V .......................................................................................  12V
Input Voltage
Driver ............................................................................... V to V+
Receiver .................................................................... 30V to 30V
ON/OFF Pin ................................................................... GND to 12V
Output Voltage
Driver ...................................................... (V + 30V) to (V+ 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
LT1080C/LT1081C ....................................................  0°C to 70°C
LT1080I/LT1081I .................................................  40°C to 85°C
LT1080M/LT1081M.......................... .................... 55°C to 125°C
Storage Temperature Range ...............................65°C to 150°C
Lead Temperature (Soldering, 10 sec) ................................  300°C


Description

The LT®1080/LT1081 are the only dual RS232 driver/receiver with charge pump to guarantee absolutely nolatchup. These interface optimized devices provide a real-istic balance between CMOS levels of power dissipationand real world requirements for ruggedness. The driveroutputs are fully protected against overload and can beshorted to ±30V. Unlike CMOS, the advanced architectureof the LT1080/LT1081 does not load the signal line when"shut down" or when power is off. Both the receiver andRS232 outputs are put into a high impedance state. Anadvanced output stage allows driving higher capacitiveloads at higher speeds with exceptional ruggednessagainst ESD.

For applications requiring up to five drivers and fivereceivers with charge pump in one package see the LT1130ASeries data sheet. A version of the LT1080/LT1081, theLT1180A and LT1181A that use only 0.1µF capacitors, isalso available. All of Linear Technology's RS232 ICs areavailable in standard surface mount packages.




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