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M54HC273KN/a23avaiRAD-HARD OCTAL D TYPE FLIP FLOP WITH CLEAR
M54HC273K1STN/a1avaiRAD-HARD OCTAL D TYPE FLIP FLOP WITH CLEAR


M54HC273K ,RAD-HARD OCTAL D TYPE FLIP FLOP WITH CLEARM54HC273RAD-HARD OCTAL D TYPE FLIP FLOP WITH CLEAR

M54HC273K-M54HC273K1
RAD-HARD OCTAL D TYPE FLIP FLOP WITH CLEAR
1/10April 2004 HIGH SPEED:
fMAX =66MHz (TYP.)at VCC =6V LOW POWER DISSIPATION:CC =4μA(MAX.)atTA =25°C HIGH NOISE IMMUNITY:NIH =VNIL= 28%VCC (MIN.) SYMMETRICAL OUTPUT IMPEDANCE:
|IOH|= IOL =4mA (MIN) BALANCED PROPAGATION DELAYS:
tPLH≅ tPHL WIDE OPERATING VOLTAGE RANGE:CC (OPR)= 2Vto 6V PIN AND FUNCTION COMPATIBLE WITH SERIES 273 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-9203-053
DESCRIPTION

The M54HC273is an high speed CMOS OCTAL TYPE FLIP FLOP WITH CLEAR fabricated with
silicon gateC2 MOS technology.
Information signals applied to D inputs are
transferredto theQ outputson the positive-going
edgeof the clock pulse.
When the CLEAR inputis held low, theQ output
arein the low logic level independentof the other
inputs.
All inputs are equipped with protection circuits
against static discharge and transient excess
voltage.
M54HC273

RAD-HARD OCTAL D TYPE FLIP FLOP WITH CLEAR
PIN CONNECTION
ORDER CODES
M54HC273
2/10
IEC LOGIC SYMBOLS
INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION
TRUTH TABLE
: Don’t Care
M54HC273
3/10
LOGIC DIAGRAM

This logic diagramhasnotbe usedto estimate propagation delays
ABSOLUTE MAXIMUM RATINGS

AbsoluteMaximum Ratingsare those values beyond which damagetothe device mayoccur.Functional operation under these conditionsis
not implied
RECOMMENDED OPERATING CONDITIONS
M54HC273
4/10 SPECIFICATIONS
M54HC273
5/10 ELECTRICAL CHARACTERISTICS(CL=50 pF, Inputtr=tf =6ns)
CAPACITIVE CHARACTERISTICS
CPD isdefinedasthe valueofthe IC’s internal equivalent capacitance whichis calculatedfrom theoperating current consumption without
load.(Referto TestCircuit). Average operating current canbe obtainedbythe following equation.ICC(opr)=CPD xVCC xfIN+ICC/8 (per FLIP
FLOP), andthe total CPD whennpcsof FLIP FLOP operatecanbe gainedbythe following equations: CPD (total)=32+11xn
M54HC273
6/10
TEST CIRCUIT
= 50pFor equivalent (includesjig and probe capacitance) =ZOUTof pulse generator (typically 50Ω)
WAVEFORM1: PROPAGATION DELAYS, SETUP AND HOLD TIMES
(f=1MHz; 50% duty cycle)
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