參數(shù)資料
型號: M54HC193D1
廠商: 意法半導(dǎo)體
元件分類: 通用總線功能
英文描述: RAD-HARD SYNCHRONOUS UP/DOWN BINARY COUNTER
中文描述: 抗輻射同步向上/向下二進制計數(shù)器
文件頁數(shù): 1/13頁
文件大?。?/td> 356K
代理商: M54HC193D1
1/13
April 2004
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HIGH SPEED: f
MAX
=55MHz (TYP.) at V
CC
=6V
LOW POWER DISSIPATION:
I
CC
=4
μ
A(MAX.) at T
A
=25°C
HIGH NOISE IMMUNITY:
V
NIH
= V
NIL
= 28% V
CC
(MIN.)
SYMMETRICAL OUTPUT IMPEDANCE:
|I
OH
| = I
OL
= 4mA (MIN)
BALANCED PROPAGATION DELAYS:
t
PLH
t
PHL
WIDE OPERATING VOLTAGE RANGE:
V
CC
(OPR) = 2V to 6V
PIN AND FUNCTION COMPATIBLE WITH
54 SERIES 193
SPACE GRADE-1: ESA SCC QUALIFIED
50 krad QUALIFIED, 100 krad AVAILABLE ON
REQUEST
NO SEL UNDER HIGH LET HEAVY IONS
IRRADIATION
DEVICE FULLY COMPLIANT WITH
SCC-9204-065
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DESCRIPTION
The
M54HC193
SYNCRONOUS
COUNTERS fabricated with silicon gate C
2
MOS
technology.
The counter has two separate clock inputs, an UP
COUNT input and a DOWN COUNT input. All
outputs
of
the
flip-flop
triggered on the low to high transition of either
clock while the other input is held high. The
direction of counting is determined by which input
is clocked. This counter may be preset by entering
the desired data on the DATA A, DATA B, DATA
is
an
UP/DOWN
high
speed
CMOS
BINARY
are
simultaneously
C, and DATA D input. When the LOAD input is
taken low the data is loaded independently of
either clock input. This feature allows the counters
to be used as divide-by-n counters by modifying
the count length with the preset inputs. In addition
the
counter
can
also
accomplished by inputting a high on the clear
input. All 4 internal stages are set to low
independently of either COUNT input. Both a
BORROW and CARRY output are provided to
enable cascading of both up and down counting
functions. The BORROW output produces a
negative going pulse when the counter underflows
and the CARRY outputs a pulse when the
counters overflows. The counter can be cascaded
by connection the CARRY and BORROW outputs
of one device to the COUNT UP and COUNT
DOWN inputs, respectively, of the next device.
All inputs are equipped with protection circuits
against static discharge and transient excess
voltage.
be
cleared.
This
is
M54HC193
RAD-HARD SYNCHRONOUS UP/DOWN BINARY COUNTER
PIN CONNECTION
ORDER CODES
PACKAGE
FM
EM
DILC
FPC
M54HC193D
M54HC193K
M54HC193D1
M54HC193K1
DILC-16
FPC-16
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