74LS848 - Motorola

74LS848 8-INPUT PRIORITY ENCODERS

8-INPUT PRIORITY ENCODERS WITH 3-STATE OUTPUTS The SN54 / 74LS348 and the SN54 / 74LS848 are eight input priority encoders which provide the 8-line to 3-line function. The outputs (A0 – A2) and inputs (0 – 7) are active low. The active low input which has the highest priority (input 7 has the highest) is represented on the outputs (output A0 is the lowest bi.

Features

put EO to the low state. Use of the EI input in conjunction with the EO output provides for the capability of having priority encoding of n input signals. The LS848 has special internal circuitry providing for a greatly reduced negative going glitch on the GS (Group Signal) output and on a reduced tendency for the A0, A1 and A2 outputs to become momentarily enabled. Both of these occurrences happen when the EI input goes from a logical one to a logical zero and all data inputs (0
  – 7) are held at logical ones. The internal glitch reduction circuitry does add an additional fan-in of one on all .