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74148

Motorola
Part Number 74148
Manufacturer Motorola
Description PRIORITY ENCODERS
Published Nov 12, 2019
Detailed Description 10-LINE-TO-4-LINE AND 8-LINE-TO-3-LINE PRIORITY ENCODERS The SN54 / 74LS147 and the SN54 / 74LS148 are Priority Encoder...
Datasheet PDF File 74148 PDF File

74148
74148

Overview
10-LINE-TO-4-LINE AND 8-LINE-TO-3-LINE PRIORITY ENCODERS The SN54 / 74LS147 and the SN54 / 74LS148 are Priority Encoders.
They provide priority decoding of the inputs to ensure that only the highest order data line is encoded.
Both devices have data inputs and outputs which are active at the low logic level.
The LS147 encodes nine data lines to four-line (8-4-2-1) BCD.
The implied decimal zero condition does not require an input condition because zero is encoded when all nine data lines are at a high logic level.
The LS148 encodes eight data lines to three-line (4-2-1) binary (octal).
By providing cascading circuitry (Enable Input EI and Enable Output EO) octal expansion is allowed without ...


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