MM54C221J ,Dual Monostable MultivibratorMM54C221/MM74C221DualMonostableMultivibratorFebruary1988MM54C221/MM74C221DualMonostableMultivibrato ..
MM54C221J ,Dual Monostable Multivibratorfeatures a negative-transition-triggered input fined by the relationship t C R . For furtherW(OUT) ..
MM54C244J , Octal Buffers and Line Drivers with TRI-STATE Outputs
MM54C244J , Octal Buffers and Line Drivers with TRI-STATE Outputs
MM54C32J ,Quad 2-Input OR GateFeaturesYWide supply voltage range 3.0V to 15VEmploying complementary MOS (CMOS) transistors toYach ..
MM54C32J ,Quad 2-Input OR GateMM54C32/MM74C32Quad2-InputORGateFebruary1988MM54C32/MM74C32Quad2-InputORGateGeneralDescription
MN187163 ,Microcomputers Application-Specific Standard-Product ICsPin Configurationvm——>Pso—.P51—-—>P52——>p53——.p54>p55>P55*P57P60P61P62P63920 ps4P15(IRQ1) P65P14
MN1876476 ,Microcomputers Application-Specific Standard-Product ICsMaintenance/DiscontinuedMaintenance/Discontinued includes following four Product lifecycle stage.pl ..
MN18801A ,Microcomputers Application-Specific Standard-Product ICsPin Descriptions8—Bit ’l—Chio MicrocomputersSymbolPin NameMN I880] A ofMN1880 Series' DescriptionVD ..
MN1959041 ,For Information稢ommunicationFeatures•General-purpose DSP core (MP: Main Processor) that can implement complex processing flexib ..
MN1A7T0200 ,MicrocomputerMN1A7T0200Type MN1A7T0200Max. 16 M in totalROM (× × × × ×8-bit / × × × × ×16-bit / × × × × ×32-bit) ..
MN2488 , MOLD TYPE SILICON POWER TRANSISTOR
MM54C221J
Dual Monostable Multivibrator
TL/F/5904
MM54C221/MM74C221
Dual
Monostable
Multivibrator
February 1988
MM54C221/MM74C221 Dual Monostable Multivibrator
General Description
The MM54C221/MM74C221 dual monostable multivibratora monolithic complementary MOS integrated circuit. Each
multivibrator featuresa negative-transition-triggered input
anda positive-transition-triggered input, eitherof whichcan usedasan inhibit input,anda clear input.
Once fired,the output pulsesare independentof further
transitionsoftheAandB inputs andarea functionofthe
external timing components CEXT and REXT. The pulse
widthis stable overa wide rangeof temperatureand VCC.
Pulse stabilitywillbe limitedbythe accuracyof external
timing components. The pulse widthis approximatelyde-
finedbythe relationship tW(OUT)& CEXT REXT.For further
informationand applications,see AN-138.
Features Wide supply voltage range 4.5Vto 15V Guaranteed noise margin 1.0V High noise immunity 0.45 VCC (typ.) Low power TTL compatibility fanoutof2
driving74L
Connection Diagrams
TimingComponent
TL/F/5904–1
Dual-In-Line Package
TL/F/5904–2
TopView
Order NumberMM54C221or MM74C221
Truth Table
Inputs Outputs
Clear A B Q Q X L H X L H L L H u Éß v H Éß eHighlevel eLowlevele Transitionfromlowtohighe TransitionfromhightoloweOnehighlevel pulseeOnelowlevel pulse e Irrelevant
C1995National SemiconductorCorporation RRD-B30M105/PrintedinU.S.A.
