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PDF HD74HC147 Data sheet ( Hoja de datos )

Número de pieza HD74HC147
Descripción 10-to-4-line Priority Encoder
Fabricantes Hitachi Semiconductor 
Logotipo Hitachi Semiconductor Logotipo



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No Preview Available ! HD74HC147 Hoja de datos, Descripción, Manual

HD74HC147
10-to-4-line Priority Encoder
Description
The HD74HC147 features priority encoding of the inputs to ensure that only the highest order data line is
encoded. Nine input lines are encoded to a four line BCD output. The implied decimal zero codition
requires no input condition as zero is encoded when all nine data lines are at a high logic level. All data
inputs and outputs are active at the low logic level.
Features
High Speed Operation: tpd = 14.5 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)
Function Table
Inputs
Outputs
12 3 4 5 6 7 8 9 D C B A
HH H H H H H H H H H H H
XX X X X X X X L L H H L
XX X X X X X L H L H H H
XX X X X X L H H H L L L
XX X X X L H H H H L L H
XX X X L H H H H H L H L
XX X L H H H H H H L H H
XX L H H H H H H H H L L
XL H H H H H H H H H L H
LH H H H H H H H H H H L

1 page




HD74HC147 pdf
19.20
20.00 Max
16
9
1
1.3
1.11 Max
8
Unit: mm
7.62
2.54 ± 0.25
0.48 ± 0.10
0.25
+
0.13
0.05
0° – 15°
Hitachi Code
JEDEC
EIAJ
Weight (reference value)
DP-16
Conforms
Conforms
1.07 g

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