Low Input Current Logic Gate Optocouplers

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The HCPL-2219 optocoupler is an optically coupled logic gate that combines a GaAsP LED and an integrated high gain photodetector. The detector has a three state output stage and has a detector threshold with hysteresis. The three state output eliminates the need for a pullup resistor and allows for direct drive of data busses. The hysteresis provides differential mode noise immunity and eliminates the potential for output signal chatter.

A superior internal shield on the HCPL-2219 guarantees common mode transient immunity of 2.5 kV/ms at a common mode voltage of 400 volts.

The Electrical Switching Characteristics of the HCPL-2219 are guaranteed over the temperature range of 0 degrees C to 85 degrees C and a VCC range of 4.5 volts to 20 volts. Low IF and wide VCC range allow compatibility with TTL, LSTTL, and CMOS logic and result in lower power consumption compared to other high speed optocouplers. Logic signals are transmitted with a typical propagation delay of 160 nsec.

It is useful for isolating high speed logic interfaces, buffering of input and output lines, and implementing isolated line receivers in high noise environments.



  • 2.5 kV/us Minimum Common Mode Rejection (CMR) at Vcm = 400 V
  • Compatible with LSTTL, TTL, and CMOS Logic
  • Wide VCC Range (4.5 to 20 V)
  • 2.5 Mbd Guaranteed over Temperature
  • Low Input Current (1.6 mA)
  • Three State Output (No Pullup Resistor Required)
  • Guaranteed Performance from 0 degrees C to 85 degrees C
  • Hysteresis
  • Safety Approval:
UL Recognized - 3750 V rms for 1 minute
CSA Approved
IEC/EN/DIN EN 60747-5-2 Approved with Viorm = 630 Vpeak (Option 060 only)
  • Options available are:
060 = IEC/EN/DIN EN 60747-5-2 Viorm = 630 Vpeak Option
300 = Gull Wing Surface Mount Option
500 = Tape and Reel Packaging Option
XXXE = Lead Free Option


  • Isolation of High Speed Logic Systems
  • Computer-Peripheral Interfaces
  • Microprocessor System Interfaces
  • Ground Loop Elimination
  • Pulse Transformer Replacement
  • Isolated Buss Driver
  • High Speed Line Receiver

Lifecycle Status


Substance Compliance

  • RoHS
    Pb & Pb-free options available
Specification Value
Lifecycle Active
Distrib. Inventory Yes
Vcm (V) 400.0
IEC Maximum Working Insulation Voltage Viorm (VPEAK) 630.0
IF Min. (mA) 1.6
Input Current Ma Uom mA
RoHS6 Compliant Pb & Pb-free options available
Package 300mil DIP
Product Type 5 MBd Logic Gate
UL Insulation Rating Viso (VRMS) 3750.0
VDD2 (V) 5
Prop Delay (tPHL) Max. (µs) 300.0
Prop Delay (tPLH) Max. (µs) 300.0
IF Min. (mA) 1.6 mA
Application Brief1 i
Application Note5 i
Brochures2 i
Design Guide1 i
FAQs1 i
Obsolescence Notice1 i
Options Data Sheet5 i
Product Change Notice (PCN)17 i
Promotional Material1 i
Regulatory Certificate2 i
Reliability Data Sheet4 i
Selection Guide2 i
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