Datasheet

SN54ALS374A, SN54AS374, SN74ALS374A, SN74AS374
OCTAL D-TYPE EDGE-TRIGGERED FLIP-FLOPS
WITH 3-STATE OUTPUTS
SDAS167C – APRIL 1982 – REVISED NOVEMBER 1999
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN54ALS374A SN74ALS374A
UNIT
PARAMETER
TEST
CONDITIONS
MIN TYP
†
MAX MIN TYP
†
MAX
UNIT
V
IK
V
CC
= 4.5 V, I
I
= –18 mA –1.5 –1.5 V
V
CC
= 4.5 V to 5.5 V, I
OH
= –0.4 mA V
CC
–2 V
CC
–2
V
OH
V
CC
=45V
I
OH
= –1 mA 2.4 3.3
V
V
CC
=
4
.
5
V
I
OH
= –2.6 mA 2.4 3.2
V
OL
V
CC
=45V
I
OL
= 12 mA 0.25 0.4 0.25 0.4
V
V
OL
V
CC
=
4
.
5
V
I
OL
= 24 mA 0.35 0.5
V
I
OZH
V
CC
= 5.5 V, V
O
= 2.7 V 20 20 µA
I
OZL
V
CC
= 5.5 V, V
O
= 0.4 V –20 –20 µA
I
I
V
CC
= 5.5 V, V
I
= 7 V 0.1 0.1 mA
I
IH
V
CC
= 5.5 V, V
I
= 2.7 V 20 20 µA
I
IL
V
CC
= 5.5 V, V
I
= 0.4 V –0.2 –0.2 mA
I
O
‡
V
CC
= 5.5 V, V
O
= 2.25 V –20 –112 –30 –112 mA
Outputs high 11 20 11 19
I
CC
V
CC
= 5.5 V
Outputs low 19 28 19 28
mA
Outputs disabled 20 31 20 31
†
All typical values are at V
CC
= 5 V, T
A
= 25°C.
‡
The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, I
OS
.
timing requirements over recommended operating free-air temperature range (unless otherwise
noted)
SN54ALS374A SN74ALS374A
UNIT
MIN MAX MIN MAX
UNIT
f
clock
Clock frequency 30 35 MHz
t
w
Pulse duration CLK high or low 16.5 14 ns
t
su
Setup time Data before CLK↑ 10 10 ns
t
h
Hold time Data after CLK↑ 4 0 ns
switching characteristics over recommended operating conditions (unless otherwise noted
(see Figure 3)
PARAMETER
FROM TO
SN54ALS374A SN74ALS374A
UNIT
PARAMETER
(INPUT) (OUTPUT)
MIN MAX MIN MAX
UNIT
f
max
30 35 MHz
t
PLH
CLK
Q
3 14 3 12
ns
t
PHL
CLK
Q
5 17 5 16
ns
t
PZH
OE
Q
3 18 3 17
ns
t
PZL
OE
Q
5 21 5 18
ns
t
PHZ
OE
Q
1 11 1 10
ns
t
PLZ
OE
Q
2 19 2 18
ns