74AHC244 Philips Semiconductors, 74AHC244 Datasheet - Page 9

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

Philips Semiconductors
Type 74AHCT244
GND = 0 V; t
Note
1. Typical values at V
AC WAVEFORMS
1999 Sep 28
SYMBOL
V
t
t
t
t
t
t
PHL
PZL
PLZ
PHL
PZL
PLZ
CC
Octal buffer/line driver; 3-state
AHC
AHCT
/t
/t
/t
/t
/t
/t
FAMILY
= 4.5 to 5.5 V; note 1
PZH
PHZ
PZH
PHZ
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
r
= t
PARAMETER
n
n
GND to V
GND to 3.0 V
REQUIREMENTS
f
to nY
to nY
3.0 ns.
V
I
n
n
n
n
n
n
CC
INPUT
CC
= 5.0 V.
Fig.4 The input (nA
handbook, halfpage
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
nA n INPUT
nY n OUTPUT
50% V
1.5 V
INPUT
V
M
GND
V OH
V OL
CC
V I
t PLH
50% V
50% V
OUTPUT
n
) to output (nY
V
C
M
CC
CC
L
V M
V M
9
MIN.
n
3.5
3.5
5.0
5.0
5.5
7.0
) propagation delays.
TYP.
25
V M
7.4
10.4
9.4
8.4
11.4
11.4
MAX.
V M
t PHL
MNA171
74AHC244; 74AHCT244
T
amb
1.0
1.0
1.0
1.0
1.0
1.0
MIN.
40 to +85
( C)
8.5
12.0
10.0
9.5
13.0
13.0
MAX. MIN. MAX.
1.0
1.0
1.0
1.0
1.0
1.0
Product specification
40 to +125
9.5
13.0
12.0
10.5
14.5
14.5
ns
ns
ns
ns
ns
ns
UNIT