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HCF4026B bảng dữ liệu(PDF) 2 Page - STMicroelectronics

tên linh kiện HCF4026B
Giải thích chi tiết về linh kiện  DECADE COUNTER/DIVIDER WITH DECODED 7-SEGMENT DISPLAY OUTPUT AND DISPLAY ENABLE
PDF  11 Pages
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

HCF4026B bảng dữ liệu(HTML) 2 Page - STMicroelectronics

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HCF4026B
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IINPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
FUNCTIONAL DIAGRAM
PIN No
SYMBOL
NAME AND FUNCTION
1
CLOCK
Clock Input
10, 12, 13, 9,
11, 6, 7
a to g
7 - Segments Decoded
Outputs
2
CLOCK
INHIBIT
Clock Inhibit Input
15
RESET
Reset Input
3
DISPLAY
ENABLE IN
Display Enable Input
5
CARRY OUT Carry Out Output
4
DISPLAY
ENABLE
OUT
Display Enable Output
14
UNGATED
"C" SEG-
MENT OUT
Ungated "C" Segment
Output
8
VSS
Negative Supply Voltage
16
VDD
Positive Supply Voltage
The seven decoded outputs (a, b, c, d, e, f, g)
illuminate the proper segments in a seven
segment display device used for representing the
decimal numbers 0 to 9. The 7-segment outputs
go high when the DISPLAY ENABLE IN is high.
When the DISPLAY ENABLE IN is low the seven
decoded outputs are forced low regardless of the
state of the counter. Activation of the display only
when required results in significant power savings.
This system also facilitates implementation of
display character multiplexing. The CARRY OUT
and UNGATED "C" SEGMENT signals are not
gated by the DISPLAY ENABLE and therefore are
available
continuously.
This
feature
is
a
requirement in implementation of certain divider
function such a as divide by 60 and divide by 12.



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