ACPL-M21L, ACPL-021L and ACPL-024L

Low Power, 5 MBd Digital CMOS Optocoupler

Data Sheet

A 0.1

F bypass capacitor must be connected between pins Vdd and GND

TRUTH TABLE

(POSITIVE LOGIC)

LED

VO

ON

HIGH

OFF

LOW

Features

 CMOS output

 Wide supply voltage: 2.7 V – 5.5 V

 Speed: 5 MBd typ

 Pulse width distortion (PWD): 200 ns max

 Propagation delay skew (tpsk): 220 max

 Propagation delay (tp): 250 ns max

 Hysteresis: 0.2 mA typ

 Temperature range: -40° C to 105° C

 Safety and regulatory approvals

– UL 1577 recognized – 3750 Vrms for 1 minute for

ACPL-M21L/021L/024L

– CSA Approval

– IEC/EN 60747-5-5, Approval for Reinforced Insulation

Applications

 Low isolation of high speed logic systems

 Computer peripheral interface

 Microprocessor system interface

 Ground loop elimination

 Pulse transformer replacement

 High speed line receiver

 Power control systems

Description

ACPL-M21L (single channel SO-5 package), ACPL-021L

(single channel SO-8 package) and ACPL-024L (dual

channel SO-8 package) are optically-coupled logic gates.

The detector IC has CMOS output stage and optical

receiver input stage with built-in Schmitt trigger to

provide logic-compatible waveforms, eliminating the

need for additional waveshaping.

An internal shield on the ACPL-M21L/021L/024L guar-

antees common mode transient immunity of 25 kV/μs

at a common mode voltage of 1000 V. The ACPL-x2xL

optocouplers' series operates from a 2.7 to 5.5 V

supply with guaranteed AC and DC performance from an

extended temperature range of -40° C to 105° C. Glitches

free output upon power-up and power-down of optocou-

pler.

Functional Diagram

Lead (Pb) Free

RoHS 6 fully

compliant

RoHS 6 fully compliant options available;

-xxxE denotes a lead-free product

ACPL-021L

6

4

Anode

VDD

GND

VO

Shield

1

3

5

Cathode

2

3

8

5

6

Anode

VDD

GND

VO

Shield

1

NC

7

Cathode

NC

ACPL-M21L

ACPL-024L

4

1

Anode1

Cathode1

GND

Cathode2

Anode2

Shield

3

2

5

8

6

7