Data Sheet
ACPL-M21L, ACPL-021L, ACPL-024L,
ACPL-W21L, ACPL-K24L
Low Power, 5-MBd Digital CMOS Optocoupler
Description Features
The Broadcom ACPL-M21L (single-channel SO-5 CMOS output
package), ACPL-021L (single-channel SO-8 package),
Wide supply voltage: 2.7V to 5.5V
ACPL-024L (dual-channel SO-8 package), ACPL-W21L
Low power supply current I : 1.1 mA/channel max.
DD
(single-channel stretched SO-6 package), and ACPL-K24L
Low forward current I : 1.6 mA min.
F
(dual-channel stretched SO-8 package) are optically
Speed: 5 MBd typ.
coupled logic gates. The detector IC has CMOS output
Pulse width distortion (PWD): 200 ns max.
stage and optical receiver input stage with built-in Schmitt
Propagation delay skew (tpsk): 220 ns max.
trigger to provide logic-compatible waveforms, eliminating
Propagation delay (tp): 250 ns max.
the requirement for additional waveshaping.
Common mode rejection: 25 kV/s min. at V =
CM
1000V
An internal shield on the ACPL-M21L/021L/024L/W21L/
Hysteresis: 0.2 mA typ.
K24L guarantees common mode transient immunity of
25 kV/s at a common-mode voltage of 1000V. The Temperature range: 40C to +105C
ACPL-x2xL optocouplers' series operates from a 2.7V to
Safety and regulatory approvals
5.5V supply with guaranteed AC and DC performance from
UL 1577 recognized: 3750 V for 1 minute for
RMS
an extended temperature range of 40C to +105C.
ACPL-M21L/021L/024L and 5000 V for 1 minute
RMS
for ACPL-W21L/K24L
CAUTION! Take normal static precautions in handling and
CSA Approval
assembly of this component to prevent damage
IEC/EN 60747-5-5, Approval for Reinforced
and/or degradation that might be induced by
Insulation
electrostatic discharge (ESD). The components
featured in this data sheet are not to be used in
Applications
military or aerospace applications or
Low isolation of high speed logic systems
environments.
Computer peripheral interface
Microprocessor system interface
Ground loop elimination
Pulse transformer replacement
High-speed line receiver
Power control systems
Broadcom AV02-3462EN
November 2, 2020ACPL-M21L, ACPL-021L, ACPL-024L, ACPL-W21L, ACPL-K24L Data Sheet Low Power, 5-MBd Digital CMOS Optocoupler
Figure 1: Functional Diagram
6 6
1 VDD 1 VDD
Anode Anode
5 VO 2 5 VO
NC
3 4 GND 3 4 GND
Cathode Cathode
Shield Shield
ACPL-M21L ACPL-W21L
Anode1 1 8 V
1 8 DD
NC VDD
2 7 Cathode1 2 7
Anode VO V
01
6
NC 3 6
Cathode2 V
3 02
Cathode
4 5
4 5 GND Anode2 GND
NC
Shield Shield
ACPL-021L ACPL-024L/K24L
Table 1: Truth Table
LED VO
ON HIGH
OFF LOW
NOTE: A 0.1-F bypass capacitor must be connected between pins Vdd and GND.
Broadcom AV02-3462EN
2