STMicroelectronicsHCF40147

The STMicroelectronics HCF40147B 10-to-4 Line BCD Priority Encoder PDIP-16 is a CMOS priority encoder that converts up to ten decimal input lines into a 4-bit BCD code.

Technical description

The HCF40147B is a 10-to-4-line BCD priority encoder with active-low inputs and outputs. Its priority logic encodes the highest-priority active input.

Indicative applications

Keypads, decimal-to-BCD encoding, priority selection and service of CMOS logic.

Compatibility note

For replacement, verify the exact package, pinout, supply voltage and logic-family compatibility. Similar part numbers from another logic family may have different electrical limits and timing.