74lv74db NXP Semiconductors, 74lv74db Datasheet - Page 7

• Manufacturer Part Number: 74lv74db
• Description: Dual D-type Flip-flop With Set And Reset; Positive-edge Trigger
• Manufacturer: NXP Semiconductors

Philips Semiconductors
AC WAVEFORMS
V
V
V
output load.
NOTE:
The shaded areas indicate when the input is permitted to change for
predictable output performance.
1998 Apr 20
propagation delays, the set and reset pulse widths and the nR
Figure 2.The set (nS
M
M
OL
delays, the clock pulse width, the nD to nCP setup times, the
Dual D-type flip-flop with set and reset;
positive edge-trigger
nQ OUTPUT
nQ OUTPUT
= 1.5V at V
= 0.5 * V
nCP to nD hold times, the output transition times and the
Figure 1.The clock (nCP) to output (nQ, nQ) propagation
nCP INPUT
and V
nD INPUT
nQ OUTPUT
nQ OUTPUT
nCP INPUT
nS
nR
GND
GND
D
D
V
V
V
V
OH
OH
OH
INPUT
INPUT
OL
OL
V
Ï Ï Ï
Ï Ï Ï
V
CC
GND
GND
GND
I
I
V
V
V
V
are the typical output voltage drop that occur with the
OH
OH
OL
OL
CC
V
V
V
at V
I
I
I
maximum clock pulse frequency
w 2.7V v 3.6V
CC
VM
D
t 2.7V and w 4.5V
V
to nCP removal time
t
) and reset (nR
su
M
t
V
V
W
t
M
M
t
PHL
t
Ï Ï Ï Ï
Ï Ï Ï Ï
PLH
PHL
t
h
V
M
t
W
V
V
t
M
M
PLH
1/f
D
max
) input to output (nQ, nQ)
V
t
M
su
t
Ï Ï Ï
Ï Ï Ï
W
t
t
PHL
PLH
t
h
SV00335
SV00336
t
t
PLH
PHL
V
t
M
rem
D
7
TEST CIRCUIT
t
PLH/
GENERATOR
TEST
DEFINITIONS
R
C
R
T
PULSE
L
L
t
PHL
= Load resistor
= Load capacitance includes jig and probe capacitiance
= Termination resistance should be equal to Z
Figure 3. Load circuitry for switching times
Test Circuit for Outputs
V
2.7–3.6V
l
< 2.7V
R
V
4.5 V
T
CC
D.U.T.
V
cc
2.7V
V
V
V
CC
CC
I
V
O
OUT
C
L
of pulse generators.
Product specification
50pF
74LV74
SV00902
R
L
= 1k