Datasheet

SN54LV74A, SN74LV74A
DUAL POSITIVE-EDGE-TRIGGERED D-TYPE FLIP-FLOPS
SCLS381L − AUGUST 1997 − REVISED APRIL 2005
6
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
switching characteristics over recommended operating free-air temperature range,
V
CC
= 3.3 V ± 0.3 V (unless otherwise noted) (see Figure 1)
PARAMETER
FROM TO LOAD
T
A
= 25°C SN54LV74A SN74LV74A
UNIT
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
LOAD
CAPACITANCE
MIN TYP MAX MIN MAX MIN MAX
UNIT
f
C
L
= 15 pF 80* 140* 70* 70
MHz
f
max
C
L
= 50 pF 50 90 45 45
MHz
t
PRE or CLR
QorQ
C 15 pF
6.9* 12.3* 1* 14.5* 1 14.5
ns
t
pd
CLK
Q or Q
C
L
= 15 pF
7.9* 11.9* 1* 14* 1 14
ns
t
PRE or CLR
QorQ
C =50pF
9.2 15.8 1 18 1 18
ns
t
pd
CLK
Q or Q
C
L
= 50 pF
10.2 15.4 1 17.5 1 17.5
ns
* On products compliant to MIL-PRF-38535, this parameter is not production tested.
switching characteristics over recommended operating free-air temperature range,
V
CC
= 5 V ± 0.5 V (unless otherwise noted) (see Figure 1)
PARAMETER
FROM TO LOAD
T
A
= 25°C SN54LV74A SN74LV74A
UNIT
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
LOAD
CAPACITANCE
MIN TYP MAX MIN MAX MIN MAX
UNIT
f
C
L
= 15 pF 130* 180* 110* 110
MHz
f
max
C
L
= 50 pF 90 140 75 75
MHz
t
PRE or CLR
QQ
C 15 pF
5* 7.7* 1* 9* 1 9
ns
t
pd
CLK
Q or Q
C
L
= 15 pF
5.6* 7.3* 1* 8.5* 1 8.5
ns
t
PRE or CLR
QorQ
C =50pF
6.6 9.7 1 11 1 11
ns
t
pd
CLK
Q or Q
C
L
= 50 pF
7.2 9.3 1 10.5 1 10.5
ns
* On products compliant to MIL-PRF-38535, this parameter is not production tested.
noise characteristics, V
CC
= 3.3 V, C
L
= 50 pF, T
A
= 25°C (see Note 6)
PARAMETER
SN74LV74A
UNIT
PARAMETER
MIN TYP MAX
UNIT
V
OL(P)
Quiet output, maximum dynamic V
OL
0.1 0.8 V
V
OL(V)
Quiet output, minimum dynamic V
OL
0 −0.8 V
V
OH(V)
Quiet output, minimum dynamic V
OH
3.2 V
V
IH(D)
High-level dynamic input voltage 2.31 V
V
IL(D)
Low-level dynamic input voltage 0.99 V
NOTE 6: Characteristics are for surface-mount packages only.
operating characteristics, T
A
= 25°C
PARAMETER TEST CONDITIONS V
CC
TYP UNIT
C
Power dissipation capacitance
C =50pF
f = 10 MHz
3.3 V 21
pF
C
pd
Power dissipation capacitance C
L
= 50 pF, f = 10 MHz
5 V 23
pF