The 74F148 8-input priority encoder is a Philips Semiconductors product with features such as code conversion, multi-channel D/A converter, decimal-to-BCD converter, cascading for priority encoding of “N” bits, input enable capability, priority encoding-automatic selection of highest priority input line, output enable-active Low when all inputs are High, group signal output-active when any input is Low.
This document is a product specification datasheet for the Philips 74F148 integrated circuit. The device functions as an 8-input priority encoder that accepts data from eight active-Low inputs and provides a binary representation on three active-Low outputs. It features automatic selection of the highest priority input line when multiple inputs are simultaneously active.
| Device Type | 8-input priority encoder |
|---|---|
| Supply Voltage (Nominal) | 5.0 V |
| Operating Temperature Range | 0 to +70 °C |
| Total Supply Current (Typical) | 23 mA |
A High on the Enable Input forces all outputs to the inactive (High) state and allows new data to settle without producing erroneous information.
When two or more inputs are simultaneously active, the input with the highest priority is represented on the output.