MC74HC390 Просмотр технического описания (PDF) - Motorola => Freescale

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MC74HC390

Dual 4−Stage Binary Ripple Counter with ÷2 and ÷5 Sections

Motorola => Freescale 

EXPANDED LOGIC DIAGRAM

CLOCK A 1, 15

CQ

D RQ

3, 13 QA

CLOCK B 4, 12

CQ

DQ

R

5, 11 QB

MC54/74HC390

CQ

DQ

R

6, 10 QC

RESET 2, 14

C

D RQ

7, 9 QD

TIMING DIAGRAM

(QA Connected to Clock B)

0

1

2

3

4

5

6

78

9

0

1

2

3

4

5

6

CLOCK A

RESET

QA

QB

QC

QD

High–Speed CMOS Logic Data

5

DL129 — Rev 6

MOTOROLA

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