HIT HD74HC354 Datasheet

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
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