SCD5912 Rev C

FEATURES

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Single power supply operation at 3.3V or 5.0V

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Radiation performance

- Total dose:

> 1 Mrad(Si); Dose rate = 50 - 300 rads(Si)/s

- ELDRS Immune

- SEL Immune

- Neutron Displacement Damage

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Short Circuit Tolerant

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Full military temperature range

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Designed for aerospace and high reliability space applications

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Packaging – Hermetic ceramic SOIC

- 16-pin, .411"L x .293"W x .105"Ht

- Weight - 0.8 grams max

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Aeroflex Plainview’s Radiation Hardness Assurance Plan is DLA Certified to MIL-PRF-38534, Appendix G.

RadHard-by-Design

GENERAL DESCRIPTION

Aeroflex’s RHD5912 is a radiation hardened, single supply, quad comparator with open drain outputs in a

16-pin SOIC package. The RHD5912 design uses specific circuit topology and layout methods to mitigate

total ionizing dose effects and single event latchup. These characteristics make the RHD5912 especially

suited for the harsh environment encountered in Deep Space missions. It is guaranteed operational from

-55°C to +125°C. Available screened in accordance with MIL-PRF-38534 Class K, the RHD5912 is ideal

for demanding military and space applications.

ORGANIZATION AND APPLICATION

The RHD5912 quad comparator is intended for operation with dynamic signals on either or both inputs.

Comparison is ’continuous’, that is, the circuit functions as high gain open loop amplifiers with a digital

output. For slow input signals with small input differences the comparators can be expected to respond to

small noise signals at the inputs. Although there is internal hysteresis, feedback hysteresis is the

responsibility of the user to avoid ’chattering’ on system noise.

The comparator will accept signals anywhere in the included power supply range. The circuit delay is

specified for a half-volt single ended or differential input step of either polarity ending in an input polarity

reversal of 10mV. See Switching Diagrams.

CMOS device drive has a negative temperature coefficient and the devices are therefore inherently tolerant

to momentary shorts, although on chip thermal shutdown is not provided. All inputs and outputs are diode

protected

effects are application dependent.

Standard Products

December 24, 2013

www.aeroflex.com/RHDseries

RHD5912 Quad Comparator

Open Drain Outputs

Datasheet