74lv273db NXP Semiconductors, 74lv273db Datasheet - Page 7

• Manufacturer Part Number: 74lv273db
• Description: Octal D-type Flip-flop With Reset; Positive-edge Trigger
• Manufacturer: NXP Semiconductors

Philips Semiconductors
AC WAVEFORMS
V
V
V
output load.
Figure 1. The clock (CP) to output (Q
1998 May 29
to output (Q
Figure 2. The master reset (MR) pulse width, the master reset
M
M
OL
MR INPUT
CP INPUT
Qn OUTPUT
Octal D-type flip-flop with reset; positive edge-trigger
clock pulse width and the maximum clock pulse frequency
= 1.5V at V
= 0.5V * V
V
GND
V
GND
V
V
and V
I
I
OH
OL
Qn OUTPUT
CP INPUT
OH
GND
n
V
are the typical output voltage drop that occur with the
V
CC
) propagations delay and the master reset to clock
OH
CC
OL
V
I
at V
w 2.7V v 3.6V
CC
V
t 2.7V and w 4.5V
(CP) removal time
M
V
t
M
PHL
t
PHL
t
w
1/f
t
w
MAX
V
M
V
M
n
V
) propagation delays, the
M
t
PLH
t
SV00370
rem
V
SV00372
M
7
NOTE:
The shaded areas indicate when the input is permitted to change for
predictable output performance.
TEST CIRCUIT
Q
Figure 3.
n
CP INPUT
D
OUTPUT
n
t
PLH/
GENERATOR
INPUT
GND
GND
V
V
TEST
DEFINITIONS
R
C
R
OH
OL
T
PULSE
L
L
V
V
t
PHL
= Load resistor
= Load capacitance includes jig and probe capacitiance
= Termination resistance should be equal to Z
I
I
Ì Ì Ì Ì
Ì Ì Ì Ì
Ì Ì Ì Ì
Figure 4.
Data set-up and hold times for the data input (D
V
Test Circuit for Outputs
V
M
2.7–3.6V
l
Load circuitry for switching times
< 2.7V
R
V
4.5 V
T
CC
V
M
t
su
Ì Ì Ì Ì Ì Ì
Ì Ì Ì Ì Ì Ì
Ì Ì Ì Ì Ì Ì
D.U.T.
V
t
h
cc
2.7V
V
V
V
CC
CC
I
V
V
M
O
OUT
C
L
of pulse generators.
Product specification
50pF
74LV273
SV00902
t
su
R
Ì Ì Ì Ì
Ì Ì
L
SV00371
= 1k
t
h
n
)