. LSI Logic - Index of

SN54LS222, SN54LS224, SN74LS222, SN74LS22416 X 4 SYNCHRONOUS FIRST-IN FIRST-OUT MEMORIESWITH 3-STATE OUTPUTSswitching characteristics. Vee5 V. TAPARAMETER FROM TO TEST CONDITIONS'LS222MIN TYP MAXtpLH IREf IR 23 35tpHL IREI IR 9 15tpLH OREf OR 22 35tpHL OREI OR 9 15tpLH LDCKI IR 25 40RL = 2 kfl,tpHL LDCKf IR36 50CL = 15 pF,tpLH LDCKI OR48 70See Note 2tpLH UNCKf OR 29 45tpHL UNCKI OR 28 45tpLH UNCKf IR 49 70tpLH CLRI IR 36 55tpHL CLRI OR 25 40tpHL LDCKI Q 34 50tpLH UNCKf Q RL = 667 n, 54 80tpHL UNCKf Q CL = 45 pF, 45 70tpZL OEf Q See Note 2 22 35tpZH OEf Q 21 35tpLZ OEI Q RL = 667 n, CL = 5 pF, 16 30tpHZ OEI Q See Note 2 18 30NOTE 2: Load circuits and voltage waveforms are shown in Section 1.schematics of inputs and outputsEQUIVALENT OF CLEAR ANDEQUIVALENT OF. OUTPUT READY ENABLE INPUTS OTHER INPUTSVCCINPUT---~-+--13 kn NOMVCC---~---INPUT19kn NOM-..,. ...... -.-TYPICAL OF INPUT READY ANDOUTPUT READY OUTPUTS------...---VCC'LS224UNITMIN TYP MAXnsnsnsns25 40 ns36 50 ns48 70 ns29 45 ns28 45 ns49 70 ns36 55 ns25 40 ns34 50 ns54 80 ns45 70 ns22 35 ns21 35 ns16 30 ns18 30 nsTYPICAL OF Q OUTPUTS---......-VCCenQ)()"S;Q)CrJ)...JTEXAS -1!1INSTRUMENTSPOST OFFICE aox 225012 • DA~~AS, HXAS 752652-17