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.

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