74HC4046ADB 查看數據表（PDF） - Philips Electronics

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74HC4046ADB

Phase-locked-loop with VCO

Philips Electronics 

Philips Semiconductors

Phase-locked-loop with VCO

Product specification

74HC/HCT4046A

C1

6

7

4

3

C1A C1B VCO OUT COMP IN

12 R2

R2

11 R1

R1

VCO

14

SIG IN

4046A

PHASE

PC1 OUT 2

COMPARATOR

1

PHASE

COMPARATOR

2

PC2 OUT 13

PCPOUT 1

PHASE

PC3 OUT 15

COMPARATOR

3

INH

DEMOUT VCO IN

5

10

9

RS

(a)

R3

R4

C2

(a)

Fig.4 Functional diagram.

identical to 4046A

7046A

PHASE

COMPARATOR

2

PC2 OUT 13

LOCK

DETECTOR

C LD

15

CCLD

(b)

(b)

LD 1

MGA847

1997 Nov 25

Fig.5 Logic diagram.

6

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