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HD74HC154
4-to-16-line Decoder/Demultiplexer
Description
The HD74HC154 has 4 binary select inputs (A, B, C and D). IF the device is enabled these inputs
determine which one of the 16 normally high outputs will go low. Two active low enables (G1 and G2) are
provided to ease cascading of decoders with little or no external logic.
Features
• High Speed Operation: tpd (A, B, C, D to Y) = 19 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)
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HD74HC154
Function Table
Inputs Outputs
G
1G2
LLLLLLLHHHHHHHHHHHHHHH
LLLLLHHLHHHHHHHHHHHHHH
LLLLHLHHLHHHHHHHHHHHHH
LLLLHHHHHL HHHHHHHHHHHH
LLLHLLHHHHLHHHHHHHHHHH
LLLHLHHHHHHL HHHHHHHHHH
LLLHHLHHHHHHL HHHHHHHHH
LLLHHHHHHHHHHL HHHHHHHH
LLHLL LHHHHHHHHLHHHHHHH
LL HLL HHHHHHHHHHL HHHHHH
LL HLHL HHHHHHHHHHLHHHHH
LL HLHHHHHHHHHHHHHLHHHH
LL HHL LHHHHHHHHHHHHLHHH
LL HHL HHHHHHHHHHHHHHLHH
LL HHHL HHHHHHHHHHHHHHLH
LL HHHHHHHHHHHHHHHHHHHL
LHXXXXHHHHHHHHHHHHHHHH
HLXXXXHHHHHHHHHHHHHHHH
HHXXXXHHHHHHHHHHHHHHHH
X : Irrelevant
DCBA0123456789101112131415
2
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Pin Arrangement
Outputs
Y
Y1
Y2
Y3
Y4
Y5
HD74HC154
1
0
2
3
4
5
6
0
1
2
3
4
5
A
B
C
D
G
2
24
23
22
21
20
19
V
CC
A
B
C
Inputs
D
G
2
Y6
Y7
Y8
Y9
Y10
GND
10
11
12
7
8
9
6
7
8
9
10
11
(Top view)
G1
15
14
13
12
18
17
16
15
14
13
G1
Y15
Y14
Y13
Y12
Y11
Outputs
3
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HD74HC154
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 = –4 mA
6.0 5.68 — — 5.63 — IOH = –5.2 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 = 4 mA
6.0 — — 0.26 — 0.33 IOL = 5.2 mA
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
4
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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 — — 190 — 240 ns A, B, C, D to Y
4.5 — 19 38 — 48
6.0 — — 32 — 41
2.0 — — 160 — 200 G1, G2, to Y
4.5 — 18 32 — 40
6.0 — — 27 — 34
Output rise/fall t
time t
TLH
THL
2.0 — — 75 — 95 ns
4.5 — 5 15 — 19
6.0 — — 13 — 16
Input capacitance Cin — — 5 10 — 10 pF
+85°C
HD74HC154
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1
0.88
1.90 Max
2.54 ± 0.25
30.4
31.75 Max
1.3
0.48 ± 0.10
1324
12
6.6
7.0 Max
0.51 Min
2.54 Min 5.08 Max
0.25
0° – 15°
7.62
+ 0.11
– 0.05
Unit: mm
Hitachi Code
JEDEC
EIAJ
(reference value)
Weight
DP-24N
—
Conforms
1.84 g
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Cautions
1. Hitachi neither warrants nor grants licenses of any rights of Hitachi’s or any third party’s patent,
copyright, trademark, or other intellectual property rights for information contained in this document.
Hitachi bears no responsibility for problems that may arise with third party’s rights, including
intellectual property rights, in connection with use of the information contained in this document.
2. Products and product specifications may be subject to change without notice. Confirm that you have
received the latest product standards or specifications before final design, purchase or use.
3. Hitachi makes every attempt to ensure that its products are of high quality and reliability. However,
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
consequential damage due to operation of the Hitachi product.
5. This product is not designed to be radiation resistant.
6. No one is permitted to reproduce or duplicate, in any form, the whole or part of this document without
written approval from Hitachi.
7. Contact Hitachi’s sales office for any questions regarding this document or Hitachi semiconductor
products.
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