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CD54HC297 Datasheet(PDF) 7 Page - Texas Instruments

Part # CD54HC297
Description  High-Speed CMOS Logic Digital Phase-Locked Loop
PDF  16 Pages
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Manufacturer  TI2 [Texas Instruments]
Direct Link  https://www.ti.com
Logo TI2 - Texas Instruments

CD54HC297 Datasheet(HTML) 7 Page - Texas Instruments

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7
Logic Diagram
D
CP FF
Q
D
CP FF
Q
RD
T
FF
Q
RD
T
FF
Q
RD
T FF1
Q
RD
T
FF
Q
RD
T
FF
Q
RD
T FF1
Q
M
D
M
D
RD
T FF13
Q
M
D
RD
T FF14
Q
M
D
RD
T
FF
Q
RD
T
FF
Q
RD
T
FF14
Q
M
D
RD
FF13
Q
M
D
D
CP FF
Q
Q
D
CP FF
Q
Q
D
CP FF
Q
Q
D
CP FF
Q
Q
D
CP FF
Q
D
CP FF
Q
D
CP FF
Q
D
CP FF
Q
CP FF
Q
J
KQ
RD
FF
Q
SD
Q
RD
FF
Q
SD
Q
A
B
C
D
2
1
15
14
4
6
KCP
D/U
1
2
4
8
0
CONTROL CIRCUIT
14 13 12 11 10
9
8
7654
3
2
1
TO MODE CONTROLS 12-2
(11 STAGES NOT SHOWN)
MODULO-K COUNTER
ENCTR
3
POWER ON RESET
1 = 1 1
I/DCP
5
INCREMENT/DECREMENT CIRCUIT
BORROW
CARRY
I/DOUT
7
XORPDOUT
11
ECPDOUT
12
EXCLUSIVE-OR PHASE DETECTOR
EDGE-CONTROLLED PHASE DETECTOR
φA2
φB
φA1
9
10
13
T
CD54HC297, CD74HC297, CD74HCT297
CD54HC297, CD74HC297, CD74HCT297



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