M54HC4020K1 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

M54HC4020K1

RAD-HARD 14 STAGE BINARY COUNTER

STMicroelectronics 

M54HC4020

Figure 1: IEC Logic Symbols

Figure 2: Input And Output Equivalent Circuit

Table 1: Pin Description

PIN N°

9, 7, 6, 5, 3,

2, 4, 13, 12,

14, 15, 1

10

11

8

16

SYMBOL NAME AND FUNCTION

Q1, Q4 to

Q14

Parallel Outputs

CLOCK

CLEAR

GND

VCC

Clock Input (LOW to

HIGH, Edge Triggered)

Reset Inputs

Ground (0V)

Positive Supply Voltage

Table 2: Truth Table

CLOCK

X

CLEAR

H

L

L

OUTPUT STATE

ALL OUTPUTS = "L"

NO CHANGE

ADVANCE TO NEXT STATE

2/11

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