HD74HC354
8-to-1-line Data Selectors/Multiplexer Register
(with 3-state outputs)
Description
This data selectors/multiplexers contains full on-chip binary decoding to select one of eight data sources.
The data select address is stored in transparent latches that are enabled by a low level address on pin 11,
Select Control. Data on the 8 input lines is stored in a parallel input/output register which in the
HD74HC354 is composed of 8 transparent latches enabled by a low level on pin 9, Data Control. Both true
(Y) and complementary (W) 3-state outputs are available.
Features
• High Speed Operation: tpd (DC to W, Y) = 23 ns typ (CL = 50 pF)
• High Output Current: Fanout of 15 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)
HD74HC354
Function Table
Inputs
Select Data Control Output Enable Outputs
S
1
XXXX H XXZZ
XXX X X H X Z Z
XXX X X X L Z Z
LLL L L L H D0D0
LLL H L L H D0n D0n
LLH L L L H D1D1
LLH H L L H D1n D1n
LHL L L L H D2D2
LHL H L L H D2n D2n
LHH L L L H D3D3
LHH H L L H D3n D3n
HLL L L L H D4D4
HLL H L L H D4n D4n
HLH L L L H D5D5
HLH H L L H D5n D5n
HHL L L L H D6D6
HHL H L L H D6n D6n
HHH L L L H D7D7
HHH H L L H D7n D7n
S
S
2
0
DC G1 G2G3W Y
2
Pin Arrangement
HD74HC354
1
D
7
2
D
6
20
19
V
CC
Y
Outputs
Data
inputs
Data control
D
D
D
D
D
D
GND
3
5
4
4
5
3
6
2
7
1
8
0
9
10
18
17
16
15
14
13
12
11
W
G
3
G
2
G
1
S
0
S
1
S
2
Select
control
Output
enables
Select
(Top view)
Absolute Masimum Ratings
Item Symbol Rating Unit
Supply voltage range V
Input voltage V
Output voltage V
Output current I
DC current drain per VCC, GND ICC, I
DC input diode current I
DC output diode current I
Power dissipation per package P
CC
IN
OUT
OUT
GND
IK
OK
T
Storage temperature Tstg –65 to +150 °C
–0.5 to +7.0 V
–0.5 to VCC + 0.5 V
–0.5 to VCC + 0.5 V
±35 mA
±75 mA
±20 mA
±20 mA
500 mW
3