NXP Semiconductors
74HC244; 74HCT244
Octal buffer/line driver; 3-state
Table 5.
Symbol
74HCT244
V
CC
V
I
V
O
t/V
T
amb
Recommended operating conditions
…continued
Parameter
supply voltage
input voltage
output voltage
input transition rise and fall rate V
CC
= 4.5 V
ambient temperature
Conditions
Min
4.5
0
0
-
40
Typ
5.0
-
-
1.67
-
Max
5.5
V
CC
V
CC
139
+125
Unit
V
V
V
ns/V
C
9. Static characteristics
Table 6.
Static characteristics
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol Parameter
74HC244
V
IH
HIGH-level
input voltage
V
CC
= 2.0 V
V
CC
= 4.5 V
V
CC
= 6.0 V
V
IL
LOW-level
input voltage
V
CC
= 2.0 V
V
CC
= 4.5 V
V
CC
= 6.0 V
V
OH
HIGH-level
V
I
= V
IH
or V
IL
output voltage
I
O
=
20 A;
V
CC
= 2.0 V
I
O
=
20 A;
V
CC
= 4.5 V
I
O
=
20 A;
V
CC
= 6.0 V
I
O
=
6.0
mA; V
CC
= 4.5 V
I
O
=
7.8
mA; V
CC
= 6.0 V
V
OL
LOW-level
V
I
= V
IH
or V
IL
output voltage
I
O
= 20
A;
V
CC
= 2.0 V
I
O
= 20
A;
V
CC
= 4.5 V
I
O
= 20
A;
V
CC
= 6.0 V
I
O
= 6.0 mA; V
CC
= 4.5 V
I
O
= 7.8 mA; V
CC
= 6.0 V
I
I
I
OZ
input leakage
current
OFF-state
output current
V
I
= V
CC
or GND;
V
CC
= 6.0 V
per input pin; V
I
= V
IH
or V
IL
;
V
O
= V
CC
or GND;
other inputs at V
CC
or GND;
V
CC
= 6.0 V; I
O
= 0 A
1.5
3.15
4.2
-
-
-
1.9
4.4
5.9
1.2
2.4
3.2
0.8
2.1
2.8
2.0
4.5
6.0
-
-
-
0.5
1.35
1.8
-
-
-
-
-
0.1
0.1
0.1
0.26
0.26
0.1
0.5
1.5
3.15
4.2
-
-
-
1.9
4.4
5.9
3.84
5.34
-
-
-
-
-
-
-
-
-
-
0.5
1.35
1.8
-
-
-
-
-
0.1
0.1
0.1
0.33
0.33
1.0
5.0
1.5
3.15
4.2
-
-
-
1.9
4.4
5.9
3.7
5.2
-
-
-
-
-
-
-
-
-
-
0.5
1.35
1.8
-
-
-
-
-
0.1
0.1
0.1
0.4
0.4
1.0
10
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
A
A
Conditions
Min
25
C
Typ
Max
40 C
to +85
C 40 C
to +125
C
Unit
Min
Max
Min
Max
3.98 4.32
5.48 5.81
-
-
-
-
-
-
-
0
0
0
0.15
0.16
-
-
I
CC
C
I
supply current V
I
= V
CC
or GND; I
O
= 0 A;
V
CC
= 6.0 V
input
capacitance
-
-
-
3.5
8.0
-
-
-
80
-
-
-
160
-
A
pF
74HC_HCT244
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2012. All rights reserved.
Product data sheet
Rev. 4 — 24 September 2012
5 of 18
PHILIPS [ NXP SEMICONDUCTORS ]
