HIT HD74HC353 Datasheet
HD74HC353
Dual 4-to-1-line Data Selectors/Multiplexers (with 3-state outputs)
Description
Each of these data selectors/multiplexers contains inverters and drivers to supply full binary decoding data
selection to the AND-OR-invert gates. Separate strobe inputs (G) are provided for each of the two fourline sections.
The three-state outputs can interface with and drive data lines of bus-organized systems. With all but one
of the common output disabled (at a high-impedance state) the low-impedance of the single enable output
will drive the bus line to a high or low logic level. Each output has its own strobe (G). The output is
disabled when its strobe is high.
Features
• High Speed Operation: tpd (Data to Y) = 13 ns typ (CL = 50 pF)
• High Output Current: Fanout of 10 LSTTL Loads
• Wide Operating Voltage: VCC = 2 to 6 V
• Low Input Current: 1 µA max
• Low Quiescent Supply Current: ICC (static) = 4 µA max (Ta = 25°C)
HD74HC353
Function Table
Select Input Data Inputs Output Control Output
BA C
0
C
1
XXXXXXH Z
LLL XXXL H
LL H X X X L L
LH XLXX L H
LH XH XX L L
HL X X L X L H
HL X X H X L L
HH XX XLL H
HH XX XH L L
Select inputs A and B are common to both sections
Pin Arrangement
C
2
C
3
GY
Output
1G
control
Select B
1C
1C
1C
1C
Output 1Y
GND
1
2
3
3
4
2
5
1
6
0
7
8
16
15
14
13
12
11
10
9
V
CC
Output
2G
control
Select A
2C
3
2C
2
2C
1
2C
0
Output 2Y
(Top view)
2
Logic Diagram
1G
1C
0
1C
1
1C
2
1C
3
B
A
2C
0
2C
1
HD74HC353
1Y
2C
2C
2
2Y
3
2G
3
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