Datasheet

SN54AHCT374, SN74AHCT374
OCTAL EDGE-TRIGGERED D-TYPE FLIP-FLOPS
WITH 3-STATE OUTPUTS
SCLS241L – OCTOBER 1995 – REVISED JULY 2003
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
switching characteristics over recommended free-air temperature operating range,
V
CC
= 5 V ± 0.5 V (unless otherwise noted) (see Figure 1)
PARAMETER
FROM TO LOAD
T
A
= 25°C SN54AHCT374 SN74AHCT374
UNIT
PARAMETER
(INPUT) (OUTPUT) CAPACITANCE
MIN TYP MAX MIN MAX MIN MAX
UNIT
f
C
L
= 15 pF 90** 140** 80** 80
MHz
f
max
C
L
= 50 pF 85 130 75 75
MHz
t
PLH
CLK
Q
C
L
=15
p
F
5.6** 9.4** 1** 10.5** 1 10.5
ns
t
PHL
CLK
Q
C
L
=
15
pF
5.6** 9.4** 1** 10.5** 1 10.5
ns
t
PZH
OE
Q
C
L
=15
p
F
6.5** 10.2** 1** 11.5** 1 11.5
ns
t
PZL
OE
Q
C
L
=
15
pF
6.5** 10.2** 1** 11.5** 1 11.5
ns
t
PHZ
OE
Q
C
L
=15
p
F
6.2** 10.2** 1** 11** 1 11
ns
t
PLZ
OE
Q
C
L
=
15
pF
6.2** 10.2** 1** 11** 1 11
ns
t
PLH
CLK
Q
C
L
=50
p
F
6.4 10.4 1 11.5 1 11.5
ns
t
PHL
CLK
Q
C
L
=
50
pF
6.4 10.4 1 11.5 1 11.5
ns
t
PZH
OE
Q
C
L
=50
p
F
7.3 11.2 1 12.5 1 12.5
ns
t
PZL
OE
Q
C
L
=
50
pF
7.3 11.2 1 12.5 1 12.5
ns
t
PHZ
OE
Q
C
L
=50
p
F
7 11.2 1 12 1 12
ns
t
PLZ
OE
Q
C
L
=
50
pF
7 11.2 1 12 1 12
ns
t
sk(o)
C
L
= 50 pF 1*** 1 ns
** On products compliant to MIL-PRF-38535, this parameter is not production tested.
*** On products compliant to MIL-PRF-38535, this parameter does not apply.
noise characteristics, V
CC
= 5 V, C
L
= 50 pF, T
A
= 25°C (see Note 4)
PARAMETER
SN74AHCT374
UNIT
PARAMETER
MIN TYP MAX
UNIT
V
OL(P)
Quiet output, maximum dynamic V
OL
0.8 1.2 V
V
OL(V)
Quiet output, minimum dynamic V
OL
–0.8 –1.2 V
V
OH(V)
Quiet output, minimum dynamic V
OH
3.8 V
V
IH(D)
High-level dynamic input voltage 2 V
V
IL(D)
Low-level dynamic input voltage 0.8 V
NOTE 4: Characteristics are for surface-mount packages only.
operating characteristics, V
CC
= 5 V, T
A
= 25°C
PARAMETER TEST CONDITIONS TYP UNIT
C
pd
Power dissipation capacitance No load, f = 1 MHz 27 pF