Philips Semiconductors
Product specification
Dual D-type flip-flop
74F74
LOGIC DIAGRAM
FUNCTION TABLE
INPUTS
OUTPUTS
D
X
X
X
h
l
X
Q
H
L
H
H
L
NC
Q
L
H
H
L
H
NC
SD
L
RD
H
L
L
H
H
H
CP
X
X
X
↑
↑
↑
OPERATING
MODE
Asynchronous set
Asynchronous reset
Undetermined*
Load ”1”
Load ”0”
Hold
SD
4, 10
RD
1, 13
5, 9
Q
H
L
H
CP
3, 11
6, 8
Q
H
H
D
2, 12
V
CC
= Pin 14
GND = Pin 7
SF00048
NOTES:
H = High voltage level
h = High voltage level one setup time prior to low-to-high clock
transition
L = Low voltage level
l = Low voltage level one setup time prior to low-to-high clock
transition
NC= No change from the previous setup
X = Don’t care
↑
= Low-to-high clock transition
↑
= Not low-to-high clock transition
* = This setup is unstable and will change when either set or reset
return to the high level.
ABSOLUTE MAXIMUM RATINGS
(Operation beyond the limit set forth in this table may impair the useful life of the device.
Unless otherwise noted these limits are over the operating free air temperature range.)
SYMBOL
V
CC
V
IN
I
IN
V
OUT
I
OUT
T
amb
T
stg
Supply voltage
Input voltage
Input current
Voltage applied to output in high output state
Current applied to output in low output state
Commercial range
Operating free air temperature range
Storage temperature range
Industrial range
PARAMETER
RATING
–0.5 to +7.0
–0.5 to +7.0
–30 to +5
–0.5 to V
CC
40
0 to +70
–40 to +85
–65 to +150
UNIT
V
V
mA
V
mA
°C
°C
°C
RECOMMENDED OPERATING CONDITIONS
LIMITS
SYMBOL
V
CC
V
IH
V
IL
I
Ik
I
OH
I
OL
T
amb
b
Supply voltage
High-level input voltage
Low-level input voltage
Input clamp current
High-level output current
Low-level output current
O erating
Operating free air tem erature range
temperature
Commercial range
Industrial range
0
–40
PARAMETER
MIN
4.5
2.0
0.8
–18
–1
20
+70
+85
NOM
5.0
MAX
5.5
UNIT
V
V
V
mA
mA
mA
°C
°C
1996 Mar 12
3
PHILIPS [ NXP SEMICONDUCTORS ]
