參數(shù)資料
型號: HCF4029BM1
廠商: 意法半導(dǎo)體
元件分類: 通用總線功能
英文描述: BINARY OR BCD DECADE PRESETTABLE UP/DOWN COUNTER
中文描述: 二進(jìn)制或BCD十年預(yù)置加/減計數(shù)器
文件頁數(shù): 2/13頁
文件大?。?/td> 295K
代理商: HCF4029BM1
counter reaches itsmaximum count inthe UPmode
or the minimum count inthe 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 con-
nectedtoV
SS
whennot inuse.Binarycounting isac-
complished when the BINARY/DECADE 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-
clockingor a ripple-clocking arrangement as shown
in cascading counter packages. Parallel clocking
provides synchronous control and hence faster re-
sponse from all counting outputs. Ripple-clocking
allows for longer clock input rise and fall times.
FUNCTIONAL DIAGRAM
ABSOLUTE MAXIMUM RATING
Symbol
V
DD
*
Parameter
Value
-0.5 to +20
-0.5 to +18
-0.5 to V
DD
+ 0.5
±
10
200
Unit
V
V
V
mA
mW
Supply Voltage:
HCC
Types
HCF
Types
V
i
I
I
P
tot
Input Voltage
DC Input Current (any one input)
Total Power Dissipation (per package)
Dissipation per Output Transistor
for Top = Full Package Temperature Range
Operating Temperature:
HCC
Types
100
mW
o
C
o
C
o
C
T
op
HCF
Types
-55 to +125
-40 to +85
-65 to +150
T
stg
Storage Temperature
Stressesabove thoselistedunder ”Absolute Maximum Ratings”maycausepermanent damagetothedevice. Thisisastressratingonly and functional
operation ofthe device at these or any otherconditions above thoseindicated in theoperational sections of thisspecification isnotimplied.Exposure
to absolute maximum ratingconditions forexternal periods may affect device reliability.
Allvoltage values are referredto V
SS
pin voltage.
HCC/HCF4029B
2/13
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