Datasheet

SN54AHC74, SN74AHC74
SCLS255K –DECEMBER 1995–REVISED DECEMBER 2013 www.ti.com
Electrical Characteristics
over recommended operating free-air temperature range (unless otherwise noted)
–55°C to 125°C –40°C to 85°C –40°C to 125°C
T
A
= 25°C
SN54AHC74 SN74AHC74 SN74AHC74
PARAMETER TEST CONDITIONS V
CC
UNIT
MIN TYP MAX MIN MAX MIN MAX MIN MAX
2 V 1.9 2 1.9 1.9 1.9
I
OH
= -50 mA 3 V 2.9 3 2.9 2.9 2.9
V
OH
4.5 V 4.4 4.5 4.4 4.4 4.4 V
I
OH
= -4 mA 3 V 2.58 2.48 2.48 2.48
I
OH
= -8 mA 4.5 V 3.94 3.8 3.8 3.8
2 V 0.1 0.1 0.1 0.1
I
OL
= 50 mA 3 V 0.1 0.1 0.1 0.1
V
OL
4.5 V 0.1 0.1 0.1 0.1 V
I
OL
= 4 mA 3 V 0.36 0.5 0.44 0.5
I
OH
= 8 mA 4.5 V 0.36 0.5 0.44 0.5
I
I
V
I
= 5.5 V or GND 0 V to 5.5 V ±0.1 ±1
(1)
±1 ±1 µA
V
I
= V
CC
or
I
CC
I
O
= 0 5.5 V 2 20 20 20 µA
GND,
C
i
V
I
= V
CC
or GND 5 V 2 10 10 pF
(1) 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)
–40°C to 85°C –40°C to 125°C
T
A
= 25°C SN54AHC74
SN74AHC74 SN74AHC74
UNIT
MIN MAX MIN MAX MIN MAX MIN MAX
PRE or CLR low 6 7 7 7
t
w
Pulse duration ns
CLK 6 7 7 7
Data 6 7 7 7
t
su
Setup time before CLK↑ ns
PRE or CLR inactive 5 5 5 5
t
h
Hold time, data after CLK↑ 0.5 0.5 0.5 0.5 ns
Timing Requirements
over recommended operating free-air temperature range, V
CC
= 5 V ± 0.5 V (unless otherwise noted) (see Figure 1)
–40°C to 85°C –40°C to 125°C
T
A
= 25°C SN54AHC74
SN74AHC74 SN74AHC74
UNIT
MIN MAX MIN MAX MIN MAX MIN MAX
PRE or CLR low 5 5 5 5
t
w
Pulse duration ns
CLK 5 5 5 5
Data 5 5 5 5
t
su
Setup time before CLK↑ ns
PRE or CLR inactive 3 3 3 3
t
h
Hold time, data after CLK↑ 0.5 0.5 0.5 0.5 ns
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