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SINGLE POSITIVE-EDGE-TRIGGERED D-TYPE FLIP-FLOP
SCES387K – MARCH 2002 – REVISED APRIL 2007
PARAMETER MEASUREMENT INFORMATION
TEST
2 × V
CC
From Output
Under Test
C
L
(see Note A)
R
L
R
L
S1
Open
GND
V
CC
0.8 V
1.2 V
±
0.1 V
1.5 V
±
0.1 V
1.8 V
±
0.15 V
2.5 V
±
0.2 V
1.8 V
±
0.15 V
2.5 V
±
0.2 V
C
L
15 pF
15 pF
15 pF
15 pF
15 pF
30 pF
30 pF
R
L
2 kW
2 kW
2 kW
2 kW
2 kW
1 kW
500
W
V
D
0.1 V
0.1 V
0.1 V
0.15 V
0.15 V
0.15 V
0.15 V
t
PLH
/t
PHL
t
PLZ
/t
PZL
t
PHZ
/t
PZH
S1
Open
2 × V
CC
GND
LOAD CIRCUIT
V
CC
Timing Input
t
W
V
CC
Input
V
CC
/2
VOLTAGE WAVEFORMS
PULSE DURATION
V
CC
Input
t
PLH
Output
t
PHL
V
CC
/2
V
CC
/2
V
CC
/2
V
CC
/2
0V
t
PHL
V
OH
V
CC
/2
V
OL
t
PLH
V
OH
Output
V
CC
/2
V
OL
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
INVERTING AND NONINVERTING OUTPUTS
Output
Waveform 2
S1 at GND
(see Note B)
Output
Waveform 1
S1 at 2 × V
CC
(see Note B)
t
PZH
V
CC
/2
V
CC
/2
0V
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
V
CC
V
CC
/2
t
PZL
V
CC
/2
V
CC
/2
0V
t
PLZ
V
CC
V
OL
+ V
D
t
PHZ
V
OH
– V
D
V
OH
»0
V
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES
LOW- AND HIGH-LEVEL ENABLING
V
OL
Data Input
t
su
V
CC
/2
t
h
V
CC
V
CC
/2
0V
V
CC
/2
0V
Output
Control
NOTES: A. C
L
includes probe and jig capacitance.
B. Waveform 1 is for an output with internal conditions such that the output is low, except when disabled by the output control.
Waveform 2 is for an output with internal conditions such that the output is high, except when disabled by the output control.
C. All input pulses are supplied by generators having the following characteristics: PRR
£
10 MHz, Z
O
= 50
W
,
slew rate
³
1 V/ns.
D. The outputs are measured one at a time, with one transition per measurement.
E. t
PLZ
and t
PHZ
are the same as t
dis
.
F. t
PZL
and t
PZH
are the same as t
en
.
G. t
PLH
and t
PHL
are the same as t
pd
.
Figure 1. Load Circuit and Voltage Waveforms
5
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