74AHC244 Philips Semiconductors, 74AHC244 Datasheet - Page 8

• Manufacturer Part Number: 74AHC244
• Description: Octal buffer/line driver; 3-state
• Manufacturer: Philips Semiconductors

Philips Semiconductors
AC CHARACTERISTICS
Type 74AHC244
GND = 0 V; t
Notes
1. Typical values at V
2. Typical values at V
1999 Sep 28
SYMBOL
V
t
t
t
t
t
t
V
t
t
t
t
t
t
PHL
PZL
PLZ
PHL
PZL
PLZ
PHL
PZL
PLZ
PHL
PZL
PLZ
CC
CC
Octal buffer/line driver; 3-state
/t
/t
/t
/t
/t
/t
/t
/t
/t
/t
/t
/t
= 3.0 to 3.6 V; note 1
= 4.5 to 5.5 V; note 2
PZH
PHZ
PZH
PHZ
PZH
PHZ
PZH
PHZ
PLH
PLH
PLH
PLH
propagation delay
nA
propagation delay
nOE to nY
propagation delay
nOE to nY
propagation delay
nA
propagation delay
nOE to nY
propagation delay
nOE to nY
propagation delay
nA
propagation delay
nOE to nY
propagation delay
nOE to nY
propagation delay
nA
propagation delay
nOE to nY
propagation delay
nOE to nY
r
= t
PARAMETER
n
n
n
n
f
to nY
to nY
to nY
to nY
3.0 ns.
n
n
n
n
n
n
n
n
n
n
n
n
CC
CC
= 3.3 V.
= 5.0 V.
see Figs 4 and 6 15 pF
see Figs 5 and 6
see Figs 4 and 6 50 pF
see Figs 5 and 6
see Figs 4 and 6 15 pF
see Figs 5 and 6
see Figs 4 and 6 50 pF
see Figs 5 and 6
WAVEFORMS
TEST CONDITIONS
C
L
8
MIN.
5.0
6.5
5.5
7.0
7.5
10.0
3.4
4.0
4.8
5.0
5.5
7.0
TYP.
25
8.4
10.6
9.7
11.9
14.1
14.0
5.5
7.3
7.2
7.5
9.3
9.2
MAX. MIN. MAX. MIN. MAX.
74AHC244; 74AHCT244
T
amb
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
40 to +85
( C)
10.0
12.5
11.0
13.5
16.0
16.0
6.5
8.5
8.5
8.5
10.5
10.5
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
Product specification
40 to +125
10.5
13.5
12.5
15.0
18.0
17.5
7.0
9.5
9.0
9.5
12.0
11.5
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
UNIT