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74F544
Octal Registered Transceiver (Inverting in Both Directions)
TL/F/9555
54F/74F544
Octal
Registered
Transceiver
December 1994
54F/74F544
Octal Registered Transceiver
General Description
The ’F544 octal transceiver contains two setsof D-type
latchesfor temporary storageof data flowing ineither direc-
tion. Separate Latch Enableand Output Enable inputsare
providedfor each registerto permit independent controlof
inputtingand outputtingin either directionof data flow.The outputsare guaranteedto sink24mA(20mAMil) while
theB outputsare ratedfor64mA(48mA Mil). The ’F544
inverts datain both directions.
Features 8-bit octal transceiver Back-to-back registersfor storage Separate controlsfor data flowin each directionA outputs sink24 mA(20 mA Mil),B outputs sinkmA(48mAMil) 300mil slim PDIP
Commercial Military Package Package DescriptionNumber
74F544SPC N24C 24-Lead (0.300× Wide)Molded Dual-In-Line
54F544DM (Note2) J24A 24-Lead CeramicDual-In-Line
54F544SDM (Note2) J24F 24-Lead (0.300× Wide)Ceramic Dual-In-Line
74F544SC(Note1) M24B 24-Lead (0.300× Wide)Molded SmallOutline, JEDEC
74F544MSA (Note1) MSA24 24-Lead Molded Shrink SmallOutline, EIAJ, TypeII
54F544FM (Note2) W24C 24-Lead Cerpack
54F544LM (Note2) E28A 24-Lead CeramicLeadless Chip Carrier,TypeC
Note1: Devices alsoavailablein13×reel.Use suffixeSCXand MSAX.
Note2: Military grade device withenvironmentaland burn-in processing.Use suffixe DMQB, FMQBand LMQB
Logic Symbols
TL/F/9555–2
IEEE/IEC
TL/F/9555–1
TRI-STATEÉ isaregistered trademarkof National SemiconductorCorporation.
C1995National SemiconductorCorporation RRD-B30M75/PrintedinU.S.A.