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HD74HC356
8-to-1-line Data Selectors/Multiplexer/Register
(with 3-state outputs)
Description
This data selectors/multiplexers contain 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
HD74HC356 is composed of 8 edge-triggered flip-flops, clocked by a low to high transition on pin 9,
clock. Both true (Y) and complementary (W) 3-state outputs are available.
Features
• High Speed Operation: tpd (Clock to W, Y) = 27 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)
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HD74HC356
Function Table
Inputs
Select Output Enable Outputs
S
1
XXXXHXXZZ
XXXXXHXZZ
XXXXXXL ZZ
LLL LLHD
LLLH or LLLHD0nD
LLH LLHD
L L H H or L L L H D
LHL LLHD
LHLH or LLLHD2nD
LHH LLHD
L H H H or L L L H D
HLL LLHD
HLLH or LLLHD4nD
HLH LLHD
H L H H or L L L H D
HHL LLHD
HHLH or LLLHD6nD
HH H LLHD
H H H H or L L L H D
S
2
S
0
Clock G
1
G
2
G
3
WY
0
1
1n
2
3
3n
4
5
5n
6
7
7n
D
0
0n
D
1
D
1n
D
2
2n
D
3
D
3n
D
4
4n
D
5
D
5n
D
6
6n
D
7
D
7n
2
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Pin Arrangement
HD74HC356
D
D
D
Data
inputs
D
D
D
D
D
Clock
GND
Absolute Masimum Ratings
1
7
2
6
20
19
V
CC
Y
Outputs
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
Enables
Select
(Top view)
Item Symbol Rating Unit
Supply voltage range V
Input voltage V
Output voltage V
Output current I
CC
IN
OUT
OUT
DC current drain per VCC, GND ICC, I
DC input diode current I
DC output diode current I
Power dissipation per package P
IK
OK
T
GND
–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
Storage temperature Tstg –65 to +150 °C
3
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HD74HC356
Block Diagram
CLK
SC
S
0
S
1
S
2
D
0
D
1
D
2
D
3
D
4
D
5
D
6
D
7
G
1
G
2
G
3
D
Q
C
C
D
Q
C
C
D
Q
C
C
D
CQ
C
D
CQ
C
D
CQ
C
D
CQ
C
D
CQ
C
D
CQ
C
D
Q
C
C
D
CQ
C
V
CC
V
CC
W
Y
4
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HD74HC356
DC Characteristics
Ta = –40 to
Ta = 25°C
Item Symbol V
Input voltage V
IH
(V) Min Typ Max Min Max Unit Test Conditions
CC
2.0 1.5 — — 1.5 — V
4.5 3.15 — — 3.15 —
6.0 4.2 — — 4.2 —
V
IL
2.0 — — 0.5 — 0.5 V
4.5 — — 1.35 — 1.35
6.0 — — 1.8 — 1.8
Output voltage V
OH
2.0 1.9 2.0 — 1.9 — V Vin = VIH or VILIOH = –20 µA
4.5 4.4 4.5 — 4.4 —
6.0 5.9 6.0 — 5.9 —
4.5 4.18 — — 4.13 — IOH = –6 mA
6.0 5.68 — — 5.63 — IOH = –7.8 mA
V
OL
2.0 — 0.0 0.1 — 0.1 V Vin = VIH or VILIOL = 20 µA
4.5 — 0.0 0.1 — 0.1
6.0 — 0.0 0.1 — 0.1
4.5 — — 0.26 — 0.33 IOL = 6 mA
6.0 — — 0.26 — 0.33 IOL = 7.8 mA
Off-state output
I
OZ
6.0 — — ±0.5 — ±5.0 µA Vin = VIH or VIL,
current
Input current Iin 6.0 — — ±0.1 — ±1.0 µA Vin = VCC or GND
Quiescent supply
I
CC
6.0 — — 4.0 — 40 µA Vin = VCC or GND, Iout = 0 µA
current
+85°C
Vout = V
or GND
CC
5
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HD74HC356
AC Characteristics (CL = 50 pF, Input tr = tf = 6 ns)
Ta = –40 to
Ta = 25°C
Item Symbol V
Propagation delay t
time t
PLH
PHL
(V) Min Typ Max Min Max Unit Test Conditions
CC
2.0 — — 255 — 320 ns Clock to output
4.5 — 27 51 — 64
6.0 — — 43 — 54
t
PLH
t
PHL
2.0 — — 285 — 355 ns S0 – S2 to output
4.5 — 25 57 — 71
6.0 — — 48 — 60
t
PLH
t
PHL
2.0 — — 300 — 375 ns Select control to output
4.5 — 25 60 — 75
6.0 — — 51 — 64
Output enable t
time t
ZH
ZL
2.0 — — 150 — 190 ns
4.5 — 12 30 — 38
6.0 — — 26 — 33
Output disable t
time t
LZ
HZ
2.0 — — 165 — 205 ns
4.5 — 17 33 — 41
6.0 — — 28 — 35
Setup time t
su
2.0 50 — — 65 — ns D0 to D7 to Clock
4.5 10 2 — 13 — S0 to S7 to Select control
6.0 10 — — 13 —
Hold time t
h
2.0 5 — — 5 — ns D0 to D7 to Clock
4.5 5 1 — 5 — S0 to S7 to Select control
6.0 5 — — 5 —
Pulse width t
w
2.0 80 — — 100 — ns
4.5 16 5 – 20 —
6.0 14 — — 17 —
Output rise/fall t
time t
TLH
THL
2.0 — — 60 — 75 ns
4.5 — 4 12 — 15
6.0 — — 10 — 13
Input capacitance Cin — — 5 10 — 10 pF
+85°C
6
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24.50
25.40 Max
Unit: mm
1120
6.30
1
0.89
1.27 Max
2.54 ± 0.25
1.30
10
0.48 ± 0.10
7.00 Max
0.51 Min
2.54 Min 5.08 Max
Hitachi Code
JEDEC
EIAJ
Weight
7.62
+ 0.11
0.25
– 0.05
0° – 15°
(reference value)
DP-20N
—
Conforms
1.26 g
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20
Unit: mm
12.6
13 Max
11
5.5
1
0.80 Max
1.27
*0.42 ± 0.08
0.40 ± 0.06
*Dimension including the plating thickness
Base material dimension
10
0.12
0.10 ± 0.10
0.15
M
2.20 Max
7.80
0.20 ± 0.04
*0.22 ± 0.05
0.70 ± 0.20
Hitachi Code
JEDEC
EIAJ
Weight
(reference value)
+ 0.20
– 0.30
1.15
0° – 8°
FP-20DA
—
Conforms
0.31 g
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20
Unit: mm
12.8
13.2 Max
11
7.50
1
0.935 Max
1.27
*0.42 ± 0.08
0.40 ± 0.06
*Dimension including the plating thickness
Base material dimension
10
0.12
0.20 ± 0.10
0.15
M
2.65 Max
10.40
0.25 ± 0.04
*0.27 ± 0.05
0.70
Hitachi Code
JEDEC
EIAJ
Weight
+ 0.25
– 0.40
1.45
+ 0.57
– 0.30
(reference value)
0° – 8°
FP-20DB
Conforms
—
0.52 g
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Cautions
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intellectual property rights, in connection with use of the information contained in this document.
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received the latest product standards or specifications before final design, purchase or use.
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contact Hitachi’s sales office before using the product in an application that demands especially high
quality and reliability or where its failure or malfunction may directly threaten human life or cause risk
of bodily injury, such as aerospace, aeronautics, nuclear power, combustion control, transportation,
traffic, safety equipment or medical equipment for life support.
4. Design your application so that the product is used within the ranges guaranteed by Hitachi particularly
for maximum rating, operating supply voltage range, heat radiation characteristics, installation
conditions and other characteristics. Hitachi bears no responsibility for failure or damage when used
beyond the guaranteed ranges. Even within the guaranteed ranges, consider normally foreseeable
failure rates or failure modes in semiconductor devices and employ systemic measures such as failsafes, so that the equipment incorporating Hitachi product does not cause bodily injury, fire or other
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products.
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