Datasheet

SN54AHC273, SN74AHC273
OCTAL D-TYPE FLIP-FLOPS
WITH CLEAR
SCLS376G – JUNE 1997 – REVISED JULY 2003
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
V
CC
T
A
= 25°C SN54AHC273 SN74AHC273
UNIT
PARAMETER
TEST
CONDITIONS
V
CC
MIN TYP MAX MIN MAX MIN MAX
UNIT
2 V 1.9 1.9 1.9
I
OH
= –50 A
3 V 2.9 2.9 2.9
V
OH
4.5 V 4.4 4.4 4.4
V
I
OH
= –4 mA 3 V 2.58 2.48 2.48
I
OH
= –8 mA 4.5 V 3.94 3.8 3.8
2 V 0.1 0.1 0.1
I
OL
= 50 A
3 V 0.1 0.1 0.1
V
OL
4.5 V 0.1 0.1 0.1
V
I
OL
= 4 mA 3 V 0.36 0.5 0.44
I
OL
= 8 mA 4.5 V 0.36 0.5 0.44
I
I
V
I
= 5.5 V or GND 0 V to 5.5 V ±0.1 ±1* ±1 A
I
CC
V
I
= V
CC
or GND, I
O
= 0 5.5 V 4 40 40 A
C
i
V
I
= V
CC
or GND 5 V 2.5 10 10 pF
* On products compliant to MIL-PRF-38535, this parameter is not production tested at V
CC
= 0 V.
timing requirements over recommended operating free-air temperature range, V
CC
= 3.3 V ± 0.3 V
(unless otherwise noted) (see Figure 1)
SN54AHC273 SN74AHC273
T
A
= 25°C
MIN
MAX
T
A
= 25°C
MIN
MAX
UNIT
MIN MAX
MIN
MAX
MIN MAX
MIN
MAX
t
Pulse duration
CLR low 5 6 5 6
ns
t
w
Pulse
duration
CLK high or low 5 6.5 5 6.5
ns
t
Setup time
Data before CLK↑
5.5 6.5 5.5 6.5
ns
t
su
S
e
t
up
ti
me
CLR before CLK↑
2.5 2.5 2.5 2.5
ns
t
h
Hold time, data after CLK↑ 1.5 2 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)
SN54AHC273 SN74AHC273
T
A
= 25°C
MIN
MAX
T
A
= 25°C
MIN
MAX
UNIT
MIN MAX
MIN
MAX
MIN MAX
MIN
MAX
t
Pulse duration
CLR low 5 5 5 5
ns
t
w
Pulse
duration
CLK high or low 5 5 5 5
ns
t
Setup time
Data before CLK↑
4.5 4.5 4.5 4.5
ns
t
su
S
e
t
up
ti
me
CLR
before CLK↑
2 2 2 2
ns
t
h
Hold time, data after CLK↑ 1.5 2 1 1 ns