Microsemi Corp introduces radiation-tolerant octal driver ICs
For aerospace and hi-rel power-electronics control applications
The AAHS298B is radiation-tolerant to 100 kRad total dose and screened to class S and class B.
Microsemi has introduced the first in a new family of octal source-driver ICs for aerospace and other hi-rel power-electronics and control applications including motor control. The AAHS298B is radiation-tolerant to 100 kRad total dose and screened to class S and class B requirements with an operating temperature range of -55 to +125 °C. Designers can use the new driver in conjunction with Microsemi's radiation-hardened and -tolerant programmable-logic products and diodes to easily implement redundant power-management subsystems. The AAHS298B includes eight non-inverting channels and can provide an interface from TTL level, 5-V or 12-V logic systems to relays, stepper and servo motors, solenoids, and other loads. Each output is capable of sourcing 700 mA with a withstand voltage of 50 V across the full military temperature range. It includes an internal thermal shutdown feature to protect against over-current and soft-start occurrences. Additional features include:
- SEL (single-event latch-up) immunity
- Low quiescent current consumption
- Internal ground-clamp diodes
- Output breakdown voltage of 50 V (min)
- 5-V and 12-V TTL-logic compatible
