HIT HD74HC4514 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
LLLLLS
LL L L H S
LL L H L S
LLLHHS
LLHLLS
LL H L H S
LL H H L S
LLHHHS
LHLLLS
LH L L H S
LH L H L S
LHLHHS
LHHLLS
LH H L H S
LH H H L S
LHHHHS
H X X X X All output “L”
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
2
Pin Arrangement
HD74HC4514
Strobe
Data 1
Data 2
S
S
S
S
S
S
S
S
1
2
3
4
7
5
6
6
5
7
4
Latch
BADC
4 to 16
24
23
22
21
20
19
18
V
CC
Inhibit
Data 4
Data 3
S
10
S
11
S
8
Decoder
8
3
9
1
10
2
11
0
17
16
15
14
S
9
S
14
S
15
S
12
GND
12
(Top view)
13
S
13
3
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