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PDF HCF40147B Data sheet ( Hoja de datos )
| Número de pieza | HCF40147B | |
| Descripción | 10 TO 4 LINE BCD PRIORITY ENCODER | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de HCF40147B (archivo pdf) en la parte inferior de esta página. Total 12 Páginas | ||
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HCC40147B
HCF40147B
10 TO 4 LINE BCD PRIORITY ENCODER
. ENCODES 10 LINE TO 4 LINE BCD
. ACTIVE LOW INPUTS AND OUTPUTS
. STANDARDIZED, SYMMETRICAL OUTPUT
CHARACTERIZATION
. 100 % TESTED FOR QUIESCENT CURRENT
AT 20 V
. 5V, 10V AND 15V PARAMETRIC RATINGS
. MAXIMUM INPUT CURREENT OF 1 µA AT 18V
. OVER FULL PACKAGE TEMPERATURE
RANGE; 100 nA AT 18 V AND 25 oC
NOISE MARGIN (FULL PACKAGE TEMPERA-
TURE RANGE): 1V AT VDD = 5V, 2V AT
VDD = 10V, 2.5V AT VDD = 15V
...APPLICATIONS:
KEYBOARD ENCODING
10 LINE TO BCD ENCODING
RANGE SELECTION
EY
(Plastic Package)
M1
(Micro Package)
F
(Ceramic Package)
C1
(Chip Carrier)
ORDER CODES :
HCC40147BF
HCF40147BM1
HC F 4 0147 BE Y
HCF40147BC1
PIN CONNECTIONS
DESCRIPTION
The HCC/HCF40147B CMOS encoder features
priority encoding of the inputs to ensure that only the
highest order data line is encoded. Ten data input
lines (0-9) are encoded to four line (8, 4, 2, 1) BCD.
The highest priority line is line 9. All four output lines
are logic 1 (VSS) when all input lines are logic 0. All
inputs and outputs are buffered, and each output
can drive one TTL Low Power Schottky load. The
HCC/HCFF40147 is functionally similar to the
T54/T74LS147 if pin 15 is tied low.
The HCC/HCF40147B types are supplied in 16 lead
plastic or ceramic and plastic micropackage.
April 1991
1/12
1 page  
HCC/HCF40147B
DYNAMIC ELECTRICAL CHARACTERISTICS (Tamb = 25 oC, CL = 50 pF, RL = 200 KΩ,
typical temperature coefficent for all VDD values is 03 %/oC, all input rise and fall times= 20 ns)
Symbol
Parameter
tPLH Propagation Delay Time
tPHL In Phase Output
tPLH Propagation Delay Time
tPHL Out of Phase Output
tTLH Transition Time
tTHL
CI Input Capacitance
Test Conditions
VDD (V)
5
10
15
5
10
15
5
10
15
Min.
Value
Typ.
450
200
150
425
175
125
100
50
40
5
Max.
900
400
300
850
350
250
200
100
80
7.5
Unit
ns
ns
ns
pF
Typical Output Low (source) Current Charac-
teristics
Minimum Output Low (source) Current Charac-
teristics
Typical Output High (source) Current Charac-
teristics
Minimum Output High (source) Current Charac-
teristics
5/12
5 Page 
DIM.
A
B
D
d1
d2
E
e
e3
F
G
M
M1
HCC/HCF40147B
MIN.
9.78
8.89
4.2
7.37
PLCC20 MECHANICAL DATA
mm
TYP.
2.54
0.56
1.27
5.08
0.38
1.27
1.14
MAX.
10.03
9.04
4.57
MIN.
0.385
0.350
0.165
8.38 0.290
0.101
inch
TYP.
0.100
0.022
0.050
0.200
0.015
0.050
0.045
MAX.
0.395
0.356
0.180
0.330
0.004
P027A
11/12
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet HCF40147B.PDF ] | |
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