74HC244_05 Datasheet, PDF (6/22 Pages) NXP Semiconductors – Octal buffer/line driver; 3-state

Philips Semiconductors
74HC244; 74HCT244
Octal buffer/line driver; 3-state
[1] For DIP20 package: P_tot derates linearly with 12 mW/K above 70 °C.
[2] For SO20 package: P_tot derates linearly with 8 mW/K above 70 °C.
[3] For SSOP20 and TSSOP20 packages: P_tot derates linearly with 5.5 mW/K above 60 °C
[4] For DHVQFN20 packages: P_tot derates linearly with 4.5 mW/K above 60 °C.
9. Recommended operating conditions
Table 6: Recommended operating conditions
Symbol Parameter
Conditions
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
74HCT244
V_CC = 2.0 V
V_CC = 4.5 V
V_CC = 6.0 V
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
Min Typ Max Unit
2.0 5.0
0
-
0
-
−40 25
-
-
-
6.0
-
-
6.0 V
V_CC
V
V_CC
V
+125 °C
1000 ns
500 ns
400 ns
4.5 5.0
0
-
0
-
−40 25
-
6.0
5.5 V
V_CC
V
V_CC
V
+125 °C
500 ns
10. Static characteristics
Table 7: Static characteristics 74HC244
At recommended operating conditions; voltages are referenced to GND (ground = 0V).
Symbol Parameter
Conditions
Min Typ Max Unit
T_amb = 25 °C
V_IH
HIGH-state input voltage
V_CC = 2.0 V
1.5 1.2 -
V
V_CC = 4.5 V
3.15 2.4 -
V
V_CC = 6.0 V
V_IL
LOW-state input voltage
V_CC = 2.0 V
4.2 3.2 -
V
-
0.8 0.5 V
V_CC = 4.5 V
-
2.1 1.35 V
V_CC = 6.0 V
-
2.8 1.8 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
-
-
-
1.9 2.0 -
V
4.4 4.5 -
V
5.9 6.0 -
V
3.98 4.32 -
V
5.48 5.81 -
V
74HC_HCT244_3
Product data sheet
Rev. 03 — 22 December 2005
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
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