M54HC147 Datasheet PDF | STMicroelectronics

STMicroelectronics M54HC147

The M54/74HC147 is a high speed CMOS 10 TO 4 LINE PRIORITY ENCODER fabricated in silicon gate C2MOS technology. It has the same high speed performance of LSTTL combined with true CMOS low power consumption. This device features priority encoding of the inputs to ensure that only the highest order data line is encoded.

Part No.	M54HC147
Datasheet	M54HC147 Download
Manufacturer	STMicroelectronics
Description	10 TO 4 LINE PRIORITY ENCODER
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DESCRIPTION

Nine input lines are encoded to a four line BCD output. The implied decimal zero condition requires no input condition as zero is encoded when all nine data lines are at high logic level. All data input and outputs are active at the low logic level. All inputs are equipped with protection circuits against static discharge and transient excess voltage. INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN CONNECTIONS (top view) NC = No Internal Connection October 1992 1/10 M54/M74HC147 TRUTH TABLE INPUTS 1 H X X X X X X X X L X: Don’t Care OUTPUTS 6 H X X X L H H H H H 7 H X X L H H H H H H 8 H X L H H H H H H H 9 H L H H H H H H H H D H L L H H H H H H H C H H H L L L L H H H B H H H L L H H L L H A H L H L H L H L H L 2 H X X X X X X X L H 3 H X X X X X X L H H 4 H X X X X X L H H H 5 H X X X X L H H H H LOGIC DIAGRAM 2/10 M54/M74HC147 PIN

DESCRIPTION

PIN No 9, 7, 6, 14 11, 12, 13, 1, 2, 3, 4, 5, 10 15 8 16 SYMBOL A to D 1 to 9 NAME AND FUNCTION BCD Address Outputs (Active LOW) Decimal...