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Dynamic Shift Registers - Bitsavers - Trailing-Edge

Dynamic Shift Registers - Bitsavers - Trailing-Edge

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II)E...Q).......oc::o+Jc::....Q)oClock Input Voltage Levels, V¢HV¢l: The voltagelevels (logic "1" or "0") which the clock drivermust assume to insure proper device operation.Data Output Voltage Levels, VOH, Val: The outputvoltage levels (logic "1" or "0") which theoutput will assume with a specified load connectedbetween output and V ss line.Data Input Voltage Levels, V1HV1l: The voltagelevels (logic "1" or "0") which the data inputterminal must assume to insure proper logicinputs.Control Release Time, te,: The maximum timethat a load command signal can be changed priorto the V¢L to V¢H transition of the output clock,rPo UT, without affecting the data during bittime tn'Control Initiate Window: The time in which a loadcommand signal must be applied to affect bit timetn' This time extends from the start of ter to thestart of tes'Control Hold Time: The time that the load commandsignal must remain stable during tn bit time.See control timing diagram.Logical "0": The logical zero voltage is the voltagestate occurring near ground. At the output ofthe device the logical zero voltage is guaranteed tobe [lot more than -1.0 volt under worst case conditionsof power supply and ambient temperature.The input requirements are guaranteed so that anyvoltage up to -1.5 volts will be interpreted as alogical zero. This implies a 0.5 volt noise immunityfor the logical zero state.Logical "1": The logical one voltage is the morenegative voltage state occurring near the negativesupply (V D D) value. At the output of the devicethe logical one voltage is guaranteed to be not lessthan -8.0 volts under worst case conditions ofpower supply and ambient temperature. The inputrequirements are guaranteed so that any voltagemore negative than -7.0 volts will be interpretedas a logical one. This implies a 1.0 volt noiseimmunity for the logical one state.ACKNOWLEDGEMENTThe following individuals have contributed to the authorship ofthe application notes and MOS briefs in this handbook: DilipBapat, Gene Carter, Don Femling, Bob Johnson, Dale Mrazek,Richard Percival and Carl Ross.Nationa I does not assume any responsibi lity for use of any circuitry described; no circuit patent licenses are impl ied; and National reserves the right, at any time without notice, to change said circuitry,280

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