Datasheet
SN54AC374, SN74AC374
OCTAL D-TYPE EDGE-TRIGGERED FLIP-FLOPS
WITH 3-STATE OUTPUTS
SCAS543E − OCTOBER 1995 - REVISED OCTOBER 2003
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
timing requirements over recommended operating free-air temperature range, V
CC
= 3.3 V ± 0.3 V
(unless otherwise noted) (see Figure 1)
T
A
= 25°C SN54AC374 SN74AC374
UNIT
MIN MAX MIN MAX MIN MAX
UNIT
f
clock
Clock frequency 60 60 60 MHz
t
w
Pulse duration, CLK high or low 5.5 6.5 6 ns
t
su
Setup time, data before CLK↑ 5.5 6.5 6 ns
t
h
Hold time, data after CLK↑ 1 1 1 ns
timing requirements over recommended operating free-air temperature range, V
CC
= 5 V ± 0.5 V
(unless otherwise noted) (see Figure 1)
T
A
= 25°C SN54AC374 SN74AC374
UNIT
MIN MAX MIN MAX MIN MAX
UNIT
f
clock
Clock frequency 100 95 100 MHz
t
w
Pulse duration, CLK high or low 4 5 4.5 ns
t
su
Setup time, data before CLK↑ 4 5 4.5 ns
t
h
Hold time, data after CLK↑ 1.5 1.5 1.5 ns
switching characteristics over recommended operating free-air temperature range,
V
CC
= 3.3 V ± 0.3 V (unless otherwise noted) (see Figure 1)
PARAMETER
TO TO
T
A
= 25°C SN54AC374 SN74AC374
UNIT
PARAMETER
TO
(INPUT)
TO
(OUTPUT)
MIN TYP MAX MIN MAX MIN MAX
UNIT
f
max
60 110 60 60 MHz
t
PLH
CLK
Q
3 11 13.5 3 16.5 1.5 15.5
ns
t
PHL
CLK Q
2.5 10 12.5 3 15 2 14
ns
t
PZH
OE
Q
3 9.5 11.5 1 14 1.5 13
ns
t
PZL
OE
Q
3.5 9 11.5 1 14 1.5 13
ns
t
PHZ
OE
Q
3 10.5 12.5 1 16 2 14.5
ns
t
PLZ
OE
Q
2 8 11.5 1 13 1 12.5
ns
switching characteristics over recommended operating free-air temperature range,
V
CC
= 5 V ± 0.5 V (unless otherwise noted) (see Figure 1)
PARAMETER
TO TO
T
A
= 25°C SN54AC374 SN74AC374
UNIT
PARAMETER
TO
(INPUT)
TO
(OUTPUT)
MIN TYP MAX MIN MAX MIN MAX
UNIT
f
max
100 155 95 100 MHz
t
PLH
CLK
Q
2.5 8 9.5 3 12 1.5 10.5
ns
t
PHL
CLK Q
2 7 9 3 11 1.5 10
ns
t
PZH
OE
Q
2 7 8.5 1.5 10 1 9.5
ns
t
PZL
OE
Q
2 6.5 8.5 1.5 10.5 1 9.5
ns
t
PHZ
OE
Q
2 8 11 1.5 12.5 2 12.5
ns
t
PLZ
OE
Q
1.5 6.5 8.5 1.5 10.5 1 10
ns
operating characteristics, V
CC
= 5 V, T
A
= 25°C
PARAMETER TEST CONDITIONS TYP UNIT
C
pd
Power dissipation capacitance C
L
= 50 pF, f = 1 MHz 40 pF