HCMOS Compatible, High CMR,

10 MBd Optocouplers

Technical Data

Features                                                                        Functional Diagram

• HCMOS/LSTTL/TTL

  Performance Compatible                           

• 1000 V/µs Minimum

  Common Mode Rejection

  (CMR) at V_CM = 50 V (HCPL-

  261A Family) and 15 kV/µs

  Minimum CMR at V_CM =

  1000 V (HCPL-261N Family)

• High Speed: 10 MBd Typical

• AC and DC Performance

  Specified over Industrial                                                             

  Temperature Range -40°C to                                                        TRUTH TABLE (POSITIVE LOGIC)

  +85°C                                                                

• Available in 8 Pin DIP,

  SOIC-8 Packages                                                 

• Safety Approval

  UL Recognized per UL1577

     2500 V rms for 1 minute and

     5000 V rms for 1 minute

     (Option 020)

  CSA Approved

  VDE 0884 Approved with

     V_IORM = 630 V _peak for                                                               

     HCPL-261A/261N                                                                        TRUTH TABLE (POSITIVE LOGIC)

     Option 060                                                                      

Applications

• Low Input Current (3.0 mA)

  HCMOS Compatible Version

  of 6N137 Optocoupler                                                                     Schematic

• Isolated Line Receiver                                             

• Simplex/Multiplex Data                                                                                                                                 

  Transmission

• Computer-Peripheral                                                       Interface

• Digital Isolation for A/D,                                           

  D/A Conversion

• Switching Power Supplies

• Instrumentation

  Input/Output Isolation

• Ground Loop Elimination

• Pulse Transformer                                                           Replacement

Description

The HCPL-261A family of optically

coupled gates shown on this data                                             

sheet provide all the benefits of the

industry standard 6N137 family

with the added benefit of HCMOS 

compatible input current. This

allows direct interface to all

common circuit topologies without

additional LED buffer or drive

components. The AlGaAs LED                                   

used allows lower drive currents

and reduces degradation by using

the latest LED technology. On the

single channel parts, an enable

output allows the detector to be

strobed. The output of the detector

IC is an open collector schottky-

clamped transistor. The internal

shield provides a minimum

common mode transient immunity

of 1000 V/µs for the HCPL-261A

family and 15000 V/µs for the

HCPL-261N family.