HD74AC244 Datasheet, PDF (2/9 Pages) Hitachi Semiconductor – Octal Buffer/Line Driver with 3-State Output

HD74AC244/HD74ACT244
Truth Tables
Inputs
OE₁
L
A
L
L
H
H
X
Inputs
OE₂
L
A
L
L
H
H
X
H : High Voltage Level
L : Low Voltage Level
X : Immaterial
Z : High Impedance
Outputs (Pins 12, 14, 16, 18)
Y
L
H
Z
Outputs (Pins 3, 5, 7, 9)
Y
L
H
Z
Absolute Maximum Ratings
Item
Supply voltage
DC input diode current
DC input voltage
DC output diode current
DC output voltage
DC output source or sink current
DC V_CC or ground current per output pin
Storage temperature
Symbol
V_CC
I_IK
V_I
I_OK
V_O
I_O
I_CC, I_GND
Tstg
Ratings
–0.5 to 7
–20
20
–0.5 to Vcc+0.5
–50
50
–0.5 to Vcc+0.5
±50
±50
–65 to +150
Unit
V
mA
mA
V
mA
mA
V
mA
mA
°C
Condition
V_I = –0.5V
V_I = Vcc+0.5V
V_O = –0.5V
V_O = Vcc+0.5V
Recommended Operating Conditions: HD74AC244
Item
Supply voltage
Input and Output voltage
Operating temperature
Input rise and fall time
(except Schmitt inputs)
V_IN 30% to 70% V_CC
Symbol
V_CC
V_I, V_O
Ta
tr, tf
Ratings
2 to 6
0 to V_CC
–40 to +85
8
Unit
V
V
°C
ns/V
Condition
V_CC = 3.0V
V_CC = 4.5 V
V_CC = 5.5 V
Rev.2.00, Jul.16.2004, page 2 of 8