The Radiation Hardened HS-4424RH and HS-4424BRH are non-inverting, dual, monolithic high-speed MOSFET drivers designed to convert TTL level signals into high current outputs at voltages up to 18V.

The inputs of these devices are TTL compatible and can be directly driven by our HS-1825ARH PWM device or by our ACS/ACTS and HCS/HCTS type logic devices. The fast rise times and high current outputs allow very quick control of high gate capacitance power MOSFETs, like our Rad Hard FS055, in high frequency applications.

The high current outputs minimize power losses in MOSFETs by rapidly charging and discharging the gate capacitance. The output stage incorporates a low voltage lock-out circuit that puts the outputs into a three-state mode when the supply voltage drops below 10V for the HS-4424RH and 7.5V for the HS-4424BRH.

Features

• Electrically Screened to DESC SMD # 5962-99560

• QML Qualified per MIL-PRF-38535 Requirements

• Radiation Environment

   - Total Dose (Max). . . . . . . . . . . . . . . . . .3 x 105 RAD(SI)

   - Latch-Up Immune

   - Low Dose Rate Immune

• IPEAK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . >2A (Min)

• Matched Rise and Fall Times (CL = 4300pF). . .75ns (Max)

• Low Voltage Lock-Out Feature

   - HS-4424RH . . . . . . . . . . . . . . . . . . . . . . . . . . . < 10.0V

   - HS-4424BRH . . . . . . . . . . . . . . . . . . . . . . . . . . . < 7.5V

• Wide Supply Voltage Range. . . . . . . . . . . . . . . 12V to 18V

• Prop Delay . . . . . . . . . . . . . . . . . . . . . . . . . . .250ns (Max)

• Consistent Delay Times with VCC Changes

• Low Power Consumption

   - 40mW with Inputs High

   - 20mW with Inputs Low

• Low Equivalent Input Capacitance . . . . . . . . . .3.2pF (Typ)

• ESD Protected . . . . . . . . . . . . . . . . . . . . . . . . . . . >4000V

Applications

• Switching Power Supplies

• DC/DC Converters

• Motor Controllers