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零件编号 | HCF40147B | ||
描述 | 10 TO 4 LINE BCD PRIORITY ENCODER | ||
制造商 | STMicroelectronics | ||
LOGO | |||
1 Page
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
HCC/HCF40147B
DIM.
a1
B
b
b1
D
E
e
e3
F
I
L
Z
Plastic DIP16 (0.25) MECHANICAL DATA
MIN.
0.51
0.77
mm
TYP.
0.5
0.25
8.5
2.54
17.78
3.3
MAX.
1.65
20
7.1
5.1
1.27
MIN.
0.020
0.030
inch
TYP.
0.020
0.010
0.335
0.100
0.700
0.130
MAX.
0.065
0.787
0.280
0.201
0.050
P001C
8/12
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页数 | 12 页 | ||
下载 | [ HCF40147B.PDF 数据手册 ] |
零件编号 | 描述 | 制造商 |
HCF40147B | 10 TO 4 LINE BCD PRIORITY ENCODER | STMicroelectronics |
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