MC74LCX540_12 Datasheet, PDF (2/8 Pages) ON Semiconductor – Low-Voltage CMOS Octal Buffer Flow Through Pinout

MC74LCX540
V_CC OE2 O0 O1 O2 O3 O4 O5 O6 O7
20 19 18 17 16 15 14 13 12 11
1 2 3 4 5 6 7 8 9 10
OE1 D0 D1 D2 D3 D4 D5 D6 D7 GND
Figure 1. Pinout: 20−Lead (Top View)
PIN NAMES
Pins
OEn
Dn
On
Function
Output Enable Inputs
Data Inputs
3−State Outputs
1
OE1
19
OE2
2
D0
3
D1
4
D2
5
D3
6
D4
7
D5
8
D6
9
D7
18
O0
17
O1
16
O2
15
O3
14
O4
13
O5
12
O6
11
O7
Figure 2. Logic Diagram
TRUTH TABLE
Inputs
Outputs
OE1
OE2
Dn
On
L
L
L
H
L
L
H
L
X
H
X
Z
H
X
X
Z
H = High Voltage Level
L = Low Voltage Level
Z = High Impedance State
X = High or Low Voltage Level and Transitions are Acceptable
For I_CC reasons, DO NOT FLOAT Inputs
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