20 MHz core, 5V logic – the workhorse 8-bit for industrial control
The PIC16F737-I/SS: It's built for the 4V to 5.5V supply range, which means it sits comfortably on a classic 5V rail alongside legacy sensors, relay drivers, and optocouplers without needing a level shifter. Twenty-five I/O lines give you room for a mix of digital inputs, PWM outputs, and the 11-channel 10-bit ADC for analog sensing. On-chip peripherals include Brown-out Detect/Reset, POR, PWM, and WDT – the usual set for a self-respecting industrial MCU that needs to survive a noisy environment. The internal oscillator saves two pins and a crystal – one less component to source and place.
The 4V to 5.5V supply gives you headroom against brown-out dips on a 5V rail – the internal BOR kicks in before the logic glitches.
Active lifecycle – no LTB worry
No last-time-buy clock ticking, no scramble for surplus stock.
Sourcing this part – what to expect
Because it's an active, mainstream 8-bit MCU, supply is generally steady through distribution. No stock or lead-time number here – that changes daily – but the part is not hard to find when you need a production run or a repair board swap.