74HC244_05 Datasheet, PDF (5/22 Pages) NXP Semiconductors – Octal buffer/line driver; 3-state

Philips Semiconductors
74HC244; 74HCT244
Octal buffer/line driver; 3-state
Table 3:
Symbol
2A1
1Y1
2A0
1Y0
2OE
V_CC
Pin description …continued
Pin
Description
15
2 data input 1
16
1 bus output 1
17
2 data input 0
18
1 bus output 0
19
2 output enable input (active LOW)
20
supply voltage
7. Functional description
7.1 Function table
Table 4:
Control
nOE
L
H
Function table ^[1]
Input
nAn
L
H
X
[1] H = HIGH voltage level;
L = LOW voltage level;
X = don’t care;
Z = high-impedance OFF-state.
8. Limiting values
Output
nYn
L
H
Z
Table 5: Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to
GND (ground = 0 V).
Symbol Parameter
Conditions
Min Max Unit
V_CC
supply voltage
−0.5 +7 V
I_IK
input clamping current V_I < −0.5 V or V_I > V_CC + 0.5 V
-
±20 mA
I_OK
output clamping current V_O < −0.5 V or
V_O > V_CC + 0.5 V
-
±20 mA
I_O
output current
V_O = −0.5 V to (V_CC + 0.5 V)
-
±35 mA
I_CC
I_GND
T_stg
quiescent supply current
ground current
storage temperature
-
70 mA
-
−70 mA
−65 +150 °C
P_tot
total power dissipation
DIP20 package
[1] _-
750 mW
SO20 package
[2] _-
500 mW
SSOP20 package
[3] _-
500 mW
TSSOP20 package
[3] _-
500 mW
DHVQFN20 package
[4] _-
500 mW
74HC_HCT244_3
Product data sheet
Rev. 03 — 22 December 2005
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
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