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LT1781 - Low Power 5V RS232 Dual Driver/Receiver with 15kV ESD Protection

This page provides the datasheet information for the LT1781, a member of the LT1 Low Power 5V RS232 Dual Driver/Receiver with 15kV ESD Protection family.

Datasheet Summary

Features

  • s s s s s s s s s s s s s 10mA Max Supply Current ESD Protection to IEC 1000-4-2 Level 4 ±15kV Air Gap, ±8kV Contact Uses Small Capacitors: 0.1µF 120kBaud Operation for RL = 3k, CL = 2500pF 250kBaud Operation for RL = 3k, CL = 1000pF Outputs Withstand ± 30V Without Damage CMOS Comparable Low Power: 40mW Operates from a Single 5V Supply Rugged Bipolar Design Outputs Assume a High Impedance State When Off or Powered Down Meets All RS232 Specifications Available With or Without Shutdown Absolute.

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Datasheet preview – LT1781

Datasheet Details

Part number LT1781
Manufacturer Linear Technology
File Size 276.13 KB
Description Low Power 5V RS232 Dual Driver/Receiver with 15kV ESD Protection
Datasheet download datasheet LT1781 Datasheet
Additional preview pages of the LT1781 datasheet.

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Full PDF Text Transcription

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LT1780/LT1781 Low Power 5V RS232 Dual Driver/Receiver with ±15kV ESD Protection DESCRIPTIO The LT®1780/LT1781 are dual RS232 driver/receiver pairs with integral charge pump to generate RS232 voltage levels from a single 5V supply. Using only 0.1µF external capacitors, these circuits consume only 40mW of power, and can operate to 120kbaud even while driving heavy capacitive loads. New ESD structures on the chip allow the LT1780/LT1781 to survive ±15kV air gap and ±8kV contact ESD tests per IEC 1000-4-2, eliminating the need for costly TransZorbs® on the RS232 line pins. The LT1780/ LT1781 are fully compliant with EIA RS232 standards. Driver outputs are protected from overload, and can be shorted to ground or up to ± 30V without damage.
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