General Description

The MIC4123/4124/4125 family are highly reliable BiCMOS/DMOS buffer/driver/MOSFET drivers. They are higher output current versions of the MIC4126/4127/4128, which are improved versions of the MIC4426/4427/4428. All three families are pin-compatible. The MIC4123/4124/4125 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.

Features

• Reliable, low-power bipolar/CMOS/DMOS construction

• Latch-up protected to >200mA reverse current

• Logic input withstands swing to –5V

• High 3A-peak output current

• Wide 4.5V to 20V operating range

• Drives 1800pF capacitance in 25ns

• Short <50ns typical delay time

• Delay times consistent with in supply voltage change

• Matched rise and fall times

• TTL logic input independent of supply voltage

• Low equivalent 6pF input capacitance

• Low supply current

3.5mA with logic-1 input

350µA with logic-0 input

• Low 2.3Ω typical output impedance

• Output voltage swings within 25mV of ground or VS.

• ‘426/7/8-, ‘1426/7/8-, ‘4426/7/8-compatible pinout

• Inverting, noninverting, and differential configurations

• Exposed backside pad packaging reduces heat

ePAD SOIC-8L (θJA = 58°C/W)

4mm x 4mm MLF™-8L (θJA = 45°C/W)