Wide Operating Temperature Automotive R2Coupler™
20-kBd Digital Optocoupler Configurable as Low
Power, Low Leakage Phototransistor
The ACPL-M49T is a single channel, high temperature, high
CMR, 20-kBd digital optocoupler, configurable as a low power,
low leakage phototransistor, specifically for use in the
automotive applications. The SO-5 JEDEC registered (MO-155)
package outline is surface mountable.
This digital optocoupler uses an insulating layer between the
light emitting diode and an integrated photo detector to
provide electrical insulation between input and output.
Separate connections for the photodiode bias and output
transistor collector in a 5-pin configuration increase the speed
up to a hundred times over that of a conventional
phototransistor by reducing the base-collector capacitance.
Common connections with the supply and output pins shorted
in a 4-pin configuration delivers low power, low leakage
performance as a phototransistor. The ACPL-M49T has an
increased common mode transient immunity of 15kV/μs
minimum at VCM = 1500V over extended temperature range.
Broadcom® R2Coupler™ isolation products provide the
reinforced insulation and reliability needed for critical in
automotive and high temperature industrial applications.
Qualified to Automotive AEC-Q100 Test Guidelines
High temperature and reliable low-speed digital interface
for automotive applications
Wide temperature range: –40°C ~ 125°C
30 kV/μs high common-mode rejection at VCM = 1500V
Low power, low leakage phototransistor in a 4-pin
Compact, auto-insertable SO5 packages
Low LED drive current: 4 mA (typ)
Propagation delay: 20 μs (max)
Worldwide safety approval:
— UL 1577, 4000 VRMS /1 min.
— CSA approved
— IEC/EN/DIN EN 60747-5-5
Automotive low-speed digital signal isolation interface
Inverter fault feedback signal isolation
Switching power supplies feedback circuit
CAUTION: It is advised that normal static precautions be taken in handling and assembly of this component to prevent damage
and/or degradation that may be induced by ESD. The components featured in this data sheet are not to be used in military or
aerospace applications or environments.