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RHR801K1

RHR801K1

STMicroelectronics
Comparator Standard (General Purpose) MOS, Open-Collector, Rail-to-Rail 8-CFlatPack
Active27 in stock

Overview

The RHR801K1 is a radiation-hardened, high-speed single comparator designed for extreme environments. It features a rail-to-rail input, an open-collector output for flexible logic interfacing, and is housed in a ceramic 8-CFlatPack package. With a 12ns propagation delay and immunity to heavy ion-induced effects, it is engineered for critical aerospace and defense systems.

Why Choose This Part

The RHR801K1 provides exceptional reliability in harsh environments with 100 krad high-dose rate tolerance and SEL immunity up to 120 MeV.cm2/mg. Its fast 12ns propagation delay and 4mV hysteresis ensure precise switching performance, while the open-collector output simplifies level shifting between different logic families.

Applications

Satellite Clock Recovery
Restoring timing signals in spaceborne communication systems where high-dose radiation resistance is mandatory.
Radiation-Hardened Phase Detectors
Utilizing fast propagation delays for precise phase alignment in orbital electronic subsystems.
Aerospace Timing Circuits
Providing high-speed pulse detection and signal conditioning in launch vehicle avionics.
High-Speed Sampling
Acting as a fast front-end threshold detector for data acquisition in high-energy physics or military applications.

Key Specifications

Type Standard (General Purpose)
Hysteresis 4mV
Output Type MOS, Open-Collector, Rail-to-Rail
Mounting Type Surface Mount
Package / Case 8-CFlatPack
CMRR, PSRR (Typ) 80dB CMRR
Number of Elements 1
Operating Temperature -55degC ~ 125degC
Propagation Delay (Max) 12ns
Supplier Device Package 8-CFlatPack
Current - Quiescent (Max) 1.8mA, 2mA
Current - Input Bias (Max) 2.5uA @ 5V
Voltage - Input Offset (Max) 7mV @ 5V
Voltage - Supply, Single/Dual (+/-) 3V ~ 5V

Getting Started

Designers should follow STMicroelectronics Rad-Hard design guidelines, ensuring proper decoupling of the 3V to 6V supply. Since this is an open-collector device, an external pull-up resistor is required on the output pin to establish the high logic level. Evaluation of flight-grade prototypes is typically done using the RHR801K1 engineering model before transitioning to QML-V certified flight hardware.