参数资料
型号: M54HC123K1
厂商: STMICROELECTRONICS
元件分类: 谐振器
英文描述: HC/UH SERIES, DUAL MONOSTABLE MULTIVIBRATOR, CDFP16
封装: CERAMIC, DFP-16
文件页数: 1/11页
文件大小: 325K
代理商: M54HC123K1
1/11
March 2004
s
HIGH SPEED: tPD = 23 ns (TYP.) at VCC = 6V
s
LOW POWER DISSIPATION:
STAND BY STATE:
ICC=4A (MAX.) at TA=25°C
ACTIVE STATE:
ICC=200A (MAX.) at VCC = 5V
s
HIGH NOISE IMMUNITY:
VNIH = VNIL = 28% VCC (MIN.)
s
SYMMETRICAL OUTPUT IMPEDANCE:
|IOH| = IOL = 4mA (MIN)
s
BALANCED PROPAGATION DELAYS:
tPLH tPHL
s
WIDE OPERATING VOLTAGE RANGE:
VCC (OPR) = 2V to 6V
s
WIDE OUTPUT PULSE WIDTH RANGE:
tWOUT = 120 ns ~ 60 s OVER AT VCC = 4.5 V
s
PIN AND FUNCTION COMPATIBLE WITH
54 SERIES 123
s
SPACE GRADE-1: ESA SCC QUALIFIED
s
50 krad QUALIFIED, 100 krad AVAILABLE ON
REQUEST
s
NO SEL UNDER HIGH LET HEAVY IONS
IRRADIATION
s
DEVICE FULLY COMPLIANT WITH
SCC-9207-006
DESCRIPTION
The
M54HC123
is
an
high
speed
CMOS
MONOSTABLE MULTIVIBRATOR fabricated with
silicon gate C2MOS technology.
There are two trigger inputs, A INPUT (negative
edge) and B INPUT (positive edge). These inputs
are valid for slow rising/falling signals, (tr=tf=l sec).
The device may also be triggered by using the
CLR
input
(positive-edge)
because
of
the
Schmitt-trigger input; after triggering the output
maintains the MONOSTABLE state for the time
period determined by the external resistor RX and
capacitor CX. When CX > 10nF and RX > 10K,
the output pulse width value is approximately
given by the formula: tW(OUT) = K Cx Rx.
(K
0.45).
Taking CLR low breaks this MONOSTABLE
STATE. If the next trigger pulse occurs during the
MONOSTABLE
period
it
makes
the
MONOSTABLE period longer. Limit for values of
Cx and Rx : Cx : NO LIMIT
Rx : VCC < 3.0V 5K to 1M
VCC > 3.0V 1K to 1M
All inputs are equipped with protection circuits
against static discharge and transient excess
voltage.
M54HC123
RAD-HARD DUAL
RETRIGGERABLE MONOSTABLE MULTIVIBRATOR
PIN CONNECTION
ORDER CODES
PACKAGE
FM
EM
DILC
M54HC123D
M54HC123D1
FPC
M54HC123K
M54HC123K1
DILC-16
FPC-16
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