3.3V/5V Digital Optocoupler Family

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The HCPL-253L diode-transistor optocouplers use an insulating layer between a LED and an integrated photodetector to provide electrical insulation between input and output. Separate connections for the photodiode bias and output-transistor collector increase the speed up to a hundred times that of a conventional phototransistor coupler by reducing the base-collector capacitance.

These optocouplers are available in an 8-pin DIP and in an industry standard SO-8 package. The following is a cross reference table listing the 8-pin DIP part number and the electrically equivalent SO-8 part number.

The SO-8 does not require "through holes" in a PCB. This package occupies approximately one-third the footprint area of the standard dual-in-line package. The lead profile is desigened to be compatible with standard surface mount processes.

These optocouplers can be used in LVTTL/LVCMOS or wide bandwidth analog applications.

The common mode transient immunity of 15000 V/ms minimum at VCM = 1500 V guaranteed for these optocouplers.


  • 3.3V/5V Dual Supply Voltages
  • Low power consumption
  • High speed: 1 Mb/s
  • LVTTL/LVCMOS compatible
  • Available in 8-pin DIP, SO-8
  • Open collector output
  • Guaranteed performance from temperature: 0 degrees C to 70 degrees C
  • Safety approval: UL, CSA, IEC/EN/DIN EN 60747-5-2
  • Options available are:
060 = IEC/EN/DIN EN 60747-5-2 VIORM
500 = Tape and Reel Package Option
XXXE = Lead Free Option


  • High voltage insulation
  • Video signal isolation
  • Power translator isolation in motor drives
  • Line receivers
  • Feedback element in switched mode power supplies
  • High speed logic ground isolation - LVTTL/LVCMOS
  • Replaces pulse transformers
  • Replaces slow phototransistor isolators
  • Analog signal ground isolation

Lifecycle Status


Substance Compliance

  • RoHS
    Pb & Pb-free options available
Specification Value
Lifecycle Active
Distrib. Inventory Yes
RoHS6 Compliant Pb & Pb-free options available
Product Type 3.3V Digital Optocoupler
Package 300mil DIP
VDD (V) 5
IF Min. (mA) 16.0
CTR Min. (%) 15.0
CTR Max. (%) 50
Prop Delay (tPLH) Max. (µs) 1.0
Prop Delay (tPHL) Max. (µs) 1.0
CMR (min.) (V/µs) 1000.0
Vcm (V) 10.0
UL Insulation Rating Viso (VRMS) 5000.0
IEC Maximum Working Insulation Voltage Viorm (VPEAK) 630
Application Brief1 i
Application Note6 i
Brochures2 i
Design Guide1 i
FAQs2 i
Obsolescence Notice1 i
Options Data Sheet6 i
Photocard1 i
Product Change Notice (PCN)20 i
Promotional Material2 i
Regulatory Certificate2 i
Reliability Data Sheet1 i
Selection Guide2 i
White Papers4 i