What this 12-bit SAR ADC brings to a multi-sensor board
The TLC2543IN: 12-bit SAR ADC, 11 single-ended inputs via integrated mux, SPI interface, 5V supply, 66 kS/s, 20-pin DIP.
Industrial temperature range and through-hole package
The 20-pin PDIP package is socket-friendly and easy to hand-rework — a real advantage during prototyping or when a field-service tech needs to swap a suspect ADC without hot-air gear. Tube shipment is the norm for DIP parts; if your pick-and-place line expects tape, this isn't it.
It's still a valid choice for a production BOM freeze or a new design where through-hole assembly is acceptable. ROHS3 compliant, so it passes modern environmental requirements without a waiver.