General Description
The MIC4423/4424/4425 family are highly reliable
BiCMOS/DMOS buffer/driver/MOSFET drivers. They
are higher output current versions of the
MIC4426/4427/4428, which are improved versions of
the MIC426/427/428. All three families are pin
compatible. The MIC4423/4424/4425 drivers are
capable of giving reliable service in more demanding
electrical environments than their predecessors. They
will not latch under any conditions within their power
and voltage ratings. They can survive up to 5V of noise
spiking, of either polarity, on the ground pin. They can
accept, without either damage or logic upset, up to half
an amp of reverse current (either polarity) forced back
into their outputs.
The MIC4423/4424/4425 series drivers are easier to
use, more flexible in operation, and more forgiving than
other CMOS or bipolar drivers currently available. Their
BiCMOS/DMOS construction dissipates minimum
power and provides rail-to-rail voltage swings.
Primarily intended for driving power MOSFETs, the
MIC4423/4424/4425 drivers are suitable for driving
other loads (capacitive, resistive, or inductive) which
require low-impedance, high peak currents, and fast
switching times. Heavily loaded clock lines, coaxial
cables, or piezoelectric transducers are some
examples. The only known limitation on loading is that
total power dissipated in the driver must be kept within
the maximum power dissipation limits of the package.
See MIC4123/4124/4125 for high power and narrow
pulse applications.

Features
• Reliable, Low-Power Bipolar/CMOS/DMOS
Construction
• Latch-Up Protected to >500 mA Reverse Current
• Logic Input withstands Swing to –5V
• High 3A Peak Output Current
• Wide 4.5V to 18V Operating Range
• Drives 1800 pF Capacitance in 25 ns
• Short <40 ns Typical Delay Time
• Delay Times Consistent within Supply Voltage
Change
• Matched Rise and Fall Times
• TTL Logic Input Independent of Supply Voltage
• Low Equivalent 6 pF Input Capacitance
• Low Supply Current
- 3.5 mA with Logic 1 Input
- 350 μA with Logic 0 Input
• Low 3.5Ω Typical Output Impedance
• Output Voltage Swings within 25 mV of Ground or
VS.
• ‘426/7/8-, ‘1426/7/8-, ‘4426/7/8-Compatible Pinout
• Inverting, Non-Inverting, and Differential
Configurations