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HCF40193 Fiches technique(PDF) 2 Page - STMicroelectronics

No de pièce HCF40193
Description  PRESETTABLE UP/DOWN COUNTERS (DUAL CLOCK WITH RESET) BINARY TYPE
PDF  12 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

HCF40193 Fiches technique(HTML) 2 Page - STMicroelectronics

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HCF40193B
2/12
one-half clock cycle after the counter reaches its
minimum count in the count-down mode. The
cascading
of
multiple
packages
is
easily
accomplished without the need for additional
external circuitry by tying the BORROW and
CARRY outputs to the CLOCK DOWN and
CLOCK UP inputs, respectively, of the following
package.
IINPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
FUNCTIONAL DIAGRAM
PIN No
SYMBOL
NAME AND FUNCTION
3, 2, 6, 7
Q1 to Q4
Flip-Flop Outputs
4
CLOCK
DOWN
Clock Down Input
5
CLOCK UP
Clock Up Input
11
PRESET
ENABLE
Preset Enable Input
12
CARRY
Count Up (Carry)
13
BORROW
Count Down (Borrow)
14
RESET
Reset Input
15, 1, 10, 9
J1 to J4
Data Input
8
VSS
Negative Supply Voltage
16
VDD
Positive Supply Voltage



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