74ACT240_08 Datasheet, PDF (2/11 Pages) Fairchild Semiconductor – 74AC240, 74ACT240 Octal Buffer/Line Driver with 3-STATE Outputs

Connection Diagram
OE1 ¹
I0 ²
O4 ³
I1 ⁴
O5 ⁵
I2 ⁶
O6 ⁷
I3 ⁸
O7 ⁹
GND ¹⁰
20 _VCC
19 _OE2
18 _O0
17 _I4
16 _O1
15 _I5
14 _O2
13 _I6
12 _O3
11 _I7
Pin Description
Pin Names
OE₁, OE₂
I₀–I₇
O₀–O₇
Description
3-STATE Output Enable Inputs
Inputs
Outputs
Logic Symbol
IEEE/IEC
OE1 EN
I0
O0
I1
O1
I2
O2
I3
O3
OE2 EN
I4
O4
I5
O5
I6
O6
I7
O7
Truth Tables
Inputs
OE₁
I_n
L
L
L
H
H
X
Outputs
(Pins 12, 14, 16, 18)
H
L
Z
Inputs
OE₂
I_n
L
L
L
H
H
X
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = High Impedance
Outputs
(Pins 3, 5, 7, 9)
H
L
Z
©2006 Fairchild Semiconductor Corporation
74AC240, 74ACT240 Rev. 1.2.0
2
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