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HCF4029M013TR датащи(PDF) 2 Page - STMicroelectronics

номер детали HCF4029M013TR
подробное описание детали  PRESETTABLE UP/DOWN COUNTER BINARY OR BCD DECADE
PDF  12 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

HCF4029M013TR датащи(HTML) 2 Page - STMicroelectronics

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signal is normally high and the counter reaches its
maximum count in the UP mode or the minimum
count in the DOWN mode provided the CARRY-IN
signal is low. The CARRY-IN signal in the low
state can thus be considered a CLOCK ENABLE.
The CARRY-IN terminal must be connected to
VSS when not in use. Binary counting is
accomplished when the BINARY/DECODE input
is high; the counter counts in the decade mode
when the BINARY/DECADE input is low. The
counter counts Up when to UP/DOWN INPUT is
high, and Down when the UP/DOWN INPUT is
low. Multiple packages can be connected in either
a
parallel
clocking
or
a
ripple
clocking
arrangement.
Parallel
clocking
provides
synchronous
control
and,
hence,
a
faster
response
from
all
counting
outputs.
Ripple
clocking allows for longer clock input rise and fall
times.
IINPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
FUNCTIONAL DIAGRAM
PIN No
SYMBOL
NAME AND FUNCTION
15
CLOCK
Clock Input
5
CARRY IN
Carry In Input
9
BINARY/
DECADE
Binary / Decade Select
10
UP/DOWN
Up/Down Select
1
PRESET
ENABLE
Preset Enable Input
4, 12, 13, 3
JAM1 to JAM4 Jam Input Signals
6, 11, 14, 2
Q1 to Q4
Q Outputs
7
CARRY OUT
Carry Out Outputs
8
VSS
Negative Supply Voltage
16
VDD
Positive Supply Voltage



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