NXP Semiconductors
74HC244; 74HCT244
Octal buffer/line driver; 3-state
Table 6.
Static characteristics
…continued
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol Parameter
74HCT244
V
IH
V
IL
V
OH
HIGH-level
input voltage
LOW-level
input voltage
V
CC
= 4.5 V to 5.5 V
V
CC
= 4.5 V to 5.5 V
2.0
-
1.6
1.2
-
0.8
2.0
-
-
0.8
2.0
-
-
0.8
V
V
Conditions
Min
25
C
Typ
Max
40 C
to +85
C 40 C
to +125
C
Unit
Min
Max
Min
Max
HIGH-level
V
I
= V
IH
or V
IL
; V
CC
= 4.5 V
output voltage
I
O
=
20 A
I
O
=
6
mA
LOW-level
V
I
= V
IH
or V
IL
; V
CC
= 4.5 V
output voltage
I
O
= 20
A
I
O
= 6.0 mA
input leakage
current
OFF-state
output current
V
I
= V
CC
or GND;
V
CC
= 5.5 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
= 5.5 V; I
O
= 0 A
4.4
4.5
-
-
0.1
0.26
0.1
0.5
4.4
3.84
-
-
-
-
-
-
0.1
0.33
1.0
5.0
4.4
3.7
-
-
-
-
-
-
0.1
0.4
1.0
10
V
V
V
V
A
A
3.98 4.32
-
-
-
-
0
0.16
-
-
V
OL
I
I
I
OZ
I
CC
I
CC
supply current V
I
= V
CC
or GND;
V
CC
= 5.5 V; I
O
= 0 A
additional
per input pin;
supply current V
I
= V
CC
2.1 V;
other inputs at V
CC
or GND;
V
CC
= 4.5 V to 5.5 V;
I
O
= 0 A
input
capacitance
-
-
-
70
8.0
252
-
-
80
315
-
-
160
343
A
A
C
I
-
3.5
-
-
-
-
-
pF
10. Dynamic characteristics
Table 7.
Dynamic characteristics
GND = 0 V; for load circuit see
Symbol Parameter
Conditions
Min
74HC244
t
pd
propagation delay nAn to nYn;
see
V
CC
= 2.0 V
V
CC
= 4.5 V
V
CC
= 5.0 V; C
L
= 15 pF
V
CC
= 6.0 V
-
-
-
-
30
11
9
9
110
22
-
19
145
28
-
24
165
33
-
28
ns
ns
ns
ns
25
C
Typ
Max
40 C
to +125
C
Unit
Max
(85
C)
Max
(125
C)
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
6 of 18
PHILIPS [ NXP SEMICONDUCTORS ]
