Hitachi HD74HC4514 4-bit latch/4-to-16-line decoder Datasheet

HD74HC4514
4-bit Latch/4-to-16-line Decoder
Description
This device presents a 4-to-16 line decoder with latched in puts. The HD74HC4514 presents a high level at
the selected output.
This device consists of four storage latches with common strobe and inhibit (G) inputs. When a low signal
is applied to the strobe input, the input data is stored, decoded, and presented to the output. When strobe is
high, all sixteen HD74HC4514 outputs are at a low logic level.
Features
•
•
•
•
•
High Speed Operation: tpd (Data to S) = 20 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)
HD74HC4514
Function Table (Strobe = High)
Data Inputs
Inhibit
D
C
B
A
Select Outputs
L
L
L
L
L
S0
L
L
L
L
H
S1
L
L
L
H
L
S2
L
L
L
H
H
S3
L
L
H
L
L
S4
L
L
H
L
H
S5
L
L
H
H
L
S6
L
L
H
H
H
S7
L
H
L
L
L
S8
L
H
L
L
H
S9
L
H
L
H
L
S10
L
H
L
H
H
S11
L
H
H
L
L
S12
L
H
H
L
H
S13
L
H
H
H
L
S14
L
H
H
H
H
S15
H
X
X
X
X
All output “L”
2
HD74HC4514
Pin Arrangement
Strobe
1
24
VCC
Data 1
2
23
Inhibit
Data 2
3
22
Data 4
S7
4
21
Data 3
Latch
B A D C
S6
5
20
S10
S5
6
19
S11
S4
7
18
S8
S3
8
17
S9
S1
9
16
S14
S2 10
15
S15
S0 11
14
S12
GND 12
13
S13
4 to 16
Decoder
(Top view)
3
HD74HC4514
Logic Diagram
S0
S1
S2
S3
Data 1
D
LE
Data 2
D
LE
Q
S4
Q
S5
Q
S6
Q
S7
Data 3
D
LE
Q
S8
Q
S9
Data 4
D
Q
LE
Q
S10
S11
Strobe
S12
S13
S14
S15
INH
4
HD74HC4514
DC Characteristics
Ta = –40 to
+85°C
Ta = 25°C
Item
Symbol
VCC (V) Min Typ Max Min
Max
Unit
Input voltage
VIH
2.0
1.5 —
—
1.5
—
V
4.5
3.15 —
—
3.15
—
6.0
4.2 —
—
4.2
—
2.0
—
—
0.5
—
0.5
4.5
—
—
1.35 —
1.35
6.0
—
—
1.8
—
1.8
2.0
1.9 2.0 —
1.9
—
4.5
4.4 4.5 —
4.4
—
6.0
5.9 6.0 —
5.9
—
4.5
4.18 —
—
4.13
—
I OH = –4 mA
6.0
5.68 —
—
5.63
—
I OH = –5.2 mA
2.0
—
0.0 0.1
—
0.1
4.5
—
0.0 0.1
—
0.1
6.0
—
0.0 0.1
—
0.1
4.5
—
—
0.26 —
0.33
I OL = 4 mA
6.0
—
—
0.26 —
0.33
I OL = 5.2 mA
VIL
Output voltage
VOH
VOL
Test Conditions
V
V
V
Vin = VIH or VIL I OH = –20 µA
Vin = VIH or VIL I OL = 20 µA
Input current
Iin
6.0
—
—
±0.1 —
±1.0
µA
Vin = VCC or GND
Quiescent supply
current
I CC
6.0
—
—
4.0
40
µA
Vin = VCC or GND, Iout = 0 µA
—
5
HD74HC4514
AC Characteristics (CL = 50 pF, Input tr = tf = 6 ns)
Ta = –40 to
+85°C
Ta = 25°C
VCC (V) Min Typ Max Min
Max
Unit
Test Conditions
Propagation delay t PLH
2.0
—
—
200 —
250
ns
Data to output
time
4.5
—
20
40
—
50
6.0
—
—
34
—
43
t PLH
2.0
—
—
175 —
220
ns
Inhibit to output
t PHL
4.5
—
13
35
—
44
6.0
—
—
30
—
37
t PLH
2.0
—
—
200 —
250
ns
Strobe to output
t PHL
4.5
—
21
40
—
50
6.0
—
—
34
—
34
2.0
100 —
—
125
—
ns
Data to strobe
4.5
20
3
—
25
—
6.0
17
—
—
21
—
2.0
5
—
—
5
—
ns
Strobe to data
4.5
5
–1
—
5
—
6.0
5
—
—
5
—
2.0
80
—
—
100
—
ns
Strobe
4.5
16
4
—
20
—
6.0
14
—
—
17
—
Item
Setup time
Hold time
Pulse width
Symbol
t PHL
t su
th
tw
Output rise/fall
t TLH
2.0
—
—
75
—
95
time
t THL
4.5
—
6
15
—
19
6.0
—
—
13
—
16
—
—
5
10
—
10
Input capacitance
6
Cin
ns
pF
Unit: mm
13
13.4
15.0 Max
24
31.6
32.5 Max
12
1.2
15.24
0.48 ± 0.10
0.51 Min
2.54 ± 0.25
5.70 Max
2.13 Max
2.54 Min
1
+ 0.11
0.25 – 0.05
0° – 15°
Hitachi Code
JEDEC
EIAJ
Weight (reference value)
DP-24
Conforms
Conforms
3.1 g
Cautions
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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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5. This product is not designed to be radiation resistant.
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