74HCT74 Philips, 74HCT74 Datasheet - Page 4

• Manufacturer Part Number: 74HCT74
• Description: Dual D-type flip-flop with set and reset; positive-edge trigger
• Manufacturer: Philips

Philips Semiconductors
1998 Feb 23
Dual D-type flip-flop with set and reset;
positive-edge trigger
Fig.4 Functional diagram.
Fig.5 Logic diagram (one flip-flop).
4
FUNCTION TABLE
Note
1. H = HIGH voltage level
S
H
H
L = LOW voltage level
X = don’t care
Q
S
D
H
L
L
D
n 1
= LOW-to-HIGH CP transition
= state after the next LOW-to-HIGH CP transition
R
H
H
INPUTS
D
R
H
L
L
INPUTS
D
CP
CP
X
X
X
D
H
L
D
X
X
X
74HC/HCT74
Q
Product specification
H
n 1
L
OUTPUTS
OUTPUTS
Q
H
H
L
Q
H
n 1
L
Q
H
H
L