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SN74AHC74MPWREP Datasheet(PDF) 2 Page - Texas Instruments

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Part No. SN74AHC74MPWREP
Description  DUAL POSITIVE-EDGE-TRIGGERED D-TYPE FLIP-FLOP WITH CLEAR AND PRESET
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Maker  TI1 [Texas Instruments]
Homepage  http://www.ti.com
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SN74AHC74-EP
DUAL POSITIVE-EDGE-TRIGGERED D-TYPE FLIP-FLOP
WITH CLEAR AND PRESET
SCLS489 – JUNE 2003
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
FUNCTION TABLE
(each flip-flop)
INPUTS
OUTPUTS
PRE
CLR
CLK
D
Q
Q
L
H
X
X
H
L
H
LX
XL
H
L
LX
X
H†
H†
H
H
HH
L
H
H
LL
H
H
H
L
X
Q0
Q0
† This configuration is nonstable; that is, it does not
persist when PRE or CLR returns to its inactive
(high) level.
logic symbol
S
4
3
1CLK
1D
2
1D
R
1
1Q
5
6
C1
10
11
2CLK
12
2D
13
2Q
9
8
1PRE
2PRE
1CLR
2CLR
1Q
2Q
‡ This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
logic diagram, each flip-flop (positive logic)
TG
C
C
TG
C
C
TG
C
C
C
TG
C
C
PRE
CLK
D
CLR
Q
Q
C




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