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74LS348

Motorola
Part Number 74LS348
Manufacturer Motorola
Description 8-INPUT PRIORITY ENCODERS
Published Apr 23, 2005
Detailed Description 8-INPUT PRIORITY ENCODERS WITH 3-STATE OUTPUTS The SN54 / 74LS348 and the SN54 / 74LS848 are eight input priority encode...
Datasheet PDF File 74LS348 PDF File

74LS348
74LS348

Overview
...rs 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 bit).
An example would be if inputs 1, 2 and 4 were low, then a binary 4 would be represented on the outputs.
The GS (Group Signal) output is active low when any of the inputs are low.
It serves to indicate when any of the inputs are active.
A0, A1 and A2 are three-state outputs.
This allows for up to 64 line expansion without the need for special external circuitry.
A logical one on the Enable Input (EI) forces A0, A1 ared A2 to the disabled state and outpu...


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