MC74LCX244_16 Datasheet, PDF (2/10 Pages) ON Semiconductor – Low-Voltage CMOS Octal Buffer

MC74LCX244
V_CC 2OE 1O0 2D0 1O1 2D1 1O2 2D2 1O3 2D3
20 19 18 17 16 15 14 13 12 11
1 2 3 4 5 6 7 8 9 10
1OE 1D0 2O0 1D1 2O1 1D2 2O2 1D3 2O3 GND
19
12
20
11
QFN
PIN #1
10
2
9
Figure 1. Pinouts: 20−Lead (Top View)
PIN NAMES
PINS
nOE
1Dn, 2Dn
1On, 2On
FUNCTION
Output Enable Inputs
Data Inputs
3−State Outputs
TRUTH TABLE
INPUTS
OUTPUTS
1OE
1Dn
2OE
2Dn
1On, 2On
L
L
L
L
H
H
H
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
1
1OE
2
1D0
4
1D1
6
1D2
8
1D3
18
1O0
16
1O1
14
1O2
12
1O3
19
2OE
17
2D0
15
2D1
13
2D2
11
2D3
3
2O0
5
2O1
7
2O2
9
2O3
Figure 2. Logic Diagram
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2