Datasheet
SN74AHC08Q-Q1
QUADRUPLE 2-INPUT POSITIVE-AND GATE
SGDS010C − SEPTEMBER 1998 − REVISED APRIL 2008
3
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
T
A
= −40°C
TO 125°C
T
A
= −40°C
TO 85°C
UNIT
PARAMETER
TEST
CONDITIONS
V
CC
MIN TYP MAX MIN MAX MIN MAX
UNIT
2 V 1.9 2 1.9 1.9
I
OH
= −50 mA
3 V 2.9 3 2.9 2.9
V
OH
I
OH
50
mA
4.5 V 4.4 4.5 4.4 4.4
V
V
OH
I
OH
= −4 mA
3 V 2.58 2.48 2.48
V
I
OH
= −8 mA
4.5 V 3.94 3.8 3.8
2 V 0.1 0.1 0.1
I
OL
= 50 mA
3 V 0.1 0.1 0.1
V
OL
I
OL
50
mA
4.5 V 0.1 0.1 0.1
V
V
OL
I
OL
= 4 mA
3 V 0.36 0.5 0.44
V
I
OL
= 8 mA
4.5 V 0.36 0.5 0.44
I
I
A or B inputs V
I
= 5.5 V or GND 0 V to 5.5 V ±0.1 ±1 ±1 mA
I
CC
V
I
= V
CC
or GND, I
O
= 0 5.5 V 2 20 20 mA
C
i
V
I
= V
CC
or GND 5 V 4 10 pF
switching characteristics over recommended operating free-air temperature range,
V
CC
= 3.3 V ± 0.3 V (unless otherwise noted) (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
LOAD
CAPACITANCE
T
A
= 25°C
T
A
= −40°C
TO 125°C
T
A
= −40°C
TO 85°C
UNIT
PARAMETER
(INPUT) (OUTPUT) CAPACITANCE
MIN TYP MAX MIN MAX MIN MAX
UNIT
t
PLH
AorB
Y
C 15 pF
6.2 8.8 1 10.5 1 10.5
ns
t
PHL
A or B Y C
L
= 15 pF
6.2 8.8 1 10.5 1 10.5
ns
t
PLH
AorB
Y
C =50pF
8.7 12.3 1 14 1 14
ns
t
PHL
A or B Y C
L
= 50 pF
8.7 12.3 1 14 1 14
ns
switching characteristics over recommended operating free-air temperature range,
V
CC
= 5 V ± 0.5 V (unless otherwise noted) (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
LOAD
CAPACITANCE
T
A
= 25°C
T
A
= −40°C
TO 125°C
T
A
= −40°C
TO 85°C
UNIT
PARAMETER
(INPUT) (OUTPUT) CAPACITANCE
MIN TYP MAX MIN MAX MIN MAX
UNIT
t
PLH
AorB
Y
C 15 pF
4.3 5.9 1 7 1 7
ns
t
PHL
A or B Y C
L
= 15 pF
4.3 5.9 1 7 1 7
ns
t
PLH
AorB
Y
C =50pF
5.8 7.9 1 9 1 9
ns
t
PHL
A or B Y C
L
= 50 pF
5.8 7.9 1 9 1 9
ns
noise characteristics, V
CC
= 5 V, C
L
= 50 pF, T
A
= 25°C (see Note 4)
PARAMETER MIN MAX UNIT
V
OL(P)
Quiet output, maximum dynamic V
OL
0.8 V
V
OL(V)
Quiet output, minimum dynamic V
OL
−0.8 V
V
IH(D)
High-level dynamic input voltage 3.5 V
V
IL(D)
Low-level dynamic input voltage 1.5 V
NOTE 4: Characteristics are for surface-mount packages only.