74LVC377 PHILIPS [NXP Semiconductors], 74LVC377 Datasheet - Page 6

• Manufacturer Part Number: 74LVC377
• Description: Octal D-type flip-flop with data enable; positive-edge trigger
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
TEST CIRCUIT
1998 Jul 29
Octal D-type flip-flop with data enable;
positive-edge trigger
SWITCH POSITION
GENERATOR
t
t
t
PLH/
PHZ
PLZ/
PULSE
TEST
/t
t
t
PHL
PZL
PZH
Test Circuit for Outputs
Open
GND
V
V
l
S
S1
1
R
T
D.U.T.
V
cc
2.7–3.6V
< 2.7V
V
4.5 V
CC
V
O
Waveform 3. Load circuitry for switching times.
2.7V
V
V
V
C
CC
CC
I
L
= 50pF
2 < V
2 < V
2 < V
S
V
R
R
1
S1
L
L
= 1k
= 1k
CC
CC
CC
GND
V
Open
S1
6
NEGATIVE
PULSE
POSITIVE
PULSE
R
C
R
pulse generators.
L
L
T
90%
10%
= Load resistor
= Load capacitance includes jig and probe capacitance
= Termination resistance should be equal to Z
V
V
M
Input Pulse Definition
10%
90%
M
t
t
THL
TLH
DEFINITIONS
(t
(t
V
f
)
r
)
M
= 1.5V
t
t
W
W
10%
90%
V
V
M
M
90%
10%
t
t
74LVC377
TLH
THL
Product specification
OUT
(t
(t
r
f
0V
)
0V
)
V
V
SY00044
I
I
of