100 kHz programmable timer with 65536 counter
The Texas Instruments CD4541BE is a programmable timer IC that generates precise time delays using an internal 16-stage counter (65536 counts) and an external RC oscillator. It operates at a maximum frequency of 100 kHz, making it suitable for timing intervals from microseconds to hours depending on the RC time constant. Supply voltage spans 3 V to 20 V, and the device is specified over the full military temperature range of -55°C to 125°C, so it fits into designs that must hold calibration across harsh environments — engine-bay controllers, downhole instrumentation, or satellite power sequencing.
Package and pinout fit
The through-hole PDIP package is breadboard-friendly and survives rework cycles without pad lift.