Philips Semiconductors
74HC244; 74HCT244
Octal buffer/line driver; 3-state
[1]
[2]
[3]
[4]
For DIP20 package: P
tot
derates linearly with 12 mW/K above 70
°C.
For SO20 package: P
tot
derates linearly with 8 mW/K above 70
°C.
For SSOP20 and TSSOP20 packages: P
tot
derates linearly with 5.5 mW/K above 60
°C
For DHVQFN20 packages: P
tot
derates linearly with 4.5 mW/K above 60
°C.
9. Recommended operating conditions
Table 6:
Symbol
74HC244
V
CC
V
I
V
O
T
amb
t
r
, t
f
supply voltage
input voltage
output voltage
ambient temperature
input rise and fall time
V
CC
= 2.0 V
V
CC
= 4.5 V
V
CC
= 6.0 V
74HCT244
V
CC
V
I
V
O
T
amb
t
r
, t
f
supply voltage
input voltage
output voltage
ambient temperature
input rise and fall time
V
CC
= 4.5 V
4.5
0
0
−40
-
5.0
-
-
25
6.0
5.5
V
CC
V
CC
+125
500
V
V
V
°C
ns
2.0
0
0
−40
-
-
-
5.0
-
-
25
-
6.0
-
6.0
V
CC
V
CC
+125
1000
500
400
V
V
V
°C
ns
ns
ns
Recommended operating conditions
Parameter
Conditions
Min
Typ
Max
Unit
10. Static characteristics
Table 7:
Static characteristics 74HC244
At recommended operating conditions; voltages are referenced to GND (ground = 0V).
Symbol
V
IH
Parameter
HIGH-state input voltage
Conditions
V
CC
= 2.0 V
V
CC
= 4.5 V
V
CC
= 6.0 V
V
IL
LOW-state input voltage
V
CC
= 2.0 V
V
CC
= 4.5 V
V
CC
= 6.0 V
V
OH
HIGH-state output voltage
V
I
= V
IH
or V
IL
I
O
=
−20 µA;
V
CC
= 2.0 V
I
O
=
−20 µA;
V
CC
= 4.5 V
I
O
=
−20 µA;
V
CC
= 6.0 V
I
O
=
−6.0
mA; V
CC
= 4.5 V
I
O
=
−7.8
mA; V
CC
= 6 V
Min
1.5
3.15
4.2
-
-
-
-
1.9
4.4
5.9
3.98
5.48
Typ
1.2
2.4
3.2
0.8
2.1
2.8
-
2.0
4.5
6.0
4.32
5.81
Max
-
-
-
0.5
1.35
1.8
-
-
-
-
-
-
V
V
V
V
V
Unit
V
V
V
V
V
V
T
amb
= 25
°C
74HC_HCT244_3
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 — 22 December 2005
6 of 22
PHILIPS [ NXP SEMICONDUCTORS ]
