10.07.2015 Views

. LSI Logic - Index of

. LSI Logic - Index of

. LSI Logic - Index of

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GLOSSARYTTL SYMBOLS, TERMS, AND DEFINITIONSINTRODUCTIONThese symbols, terms, and definitions are in accordance with those currently agreed upon by the JEDEC Council <strong>of</strong> theElectronic Industries Association (EIA) for use in the USA and by the International Electrotechnical Commission (IEC)for international use.PART I -f maxICCICCHICClIIHIIIOPERATING CONDITIONS AND CHARACTERISTICS (IN SEQUENCE BY lETTER SYMBOLS)Maximum clock frequencyThe highest rate at which the clock input <strong>of</strong> a bistable circuit can be driven through its required sequencewhile maintaining stable transitions <strong>of</strong> logic level at the output with input conditions established that shouldcause changes <strong>of</strong> output logic level in accordance with the specification.Supply currentThe current into* the VCC supply terminal <strong>of</strong> an integrated circuit.Supply current, outputs highThe current into* the VCC supply terminal <strong>of</strong> an integrated circuit when all (or a specified number) <strong>of</strong> theoutputs are at the high level.Supply current, outputs lowThe current into* the VCC supply terminal <strong>of</strong> an integrated circuit when all (or a specified number) <strong>of</strong> theoutputs are at the low level.High-level input currentThe current into* an input when a high-level voltage is applied to that input.low-level input currentThe current into * an input when a low-level voltage is applied to that input.c:o"';::;COE .......oc:CO...Q)c:Q)~10H10llOS10ZHHigh-level output currentThe current into* an output with input conditions applied that, according to the product specification, willestablish a high level at the output.low-level output currentThe current into * an output with input conditions applied that, according to the product specification, willestablish a low level at the output.Short-circuit output currentThe current into* an output when that output is short-circuited to ground (or other specified potential) withinput conditions applied to establish the output logic level farthest from ground potential (or other specifiedpotential).Off-state (high-impedance-statel output current (<strong>of</strong> a three-state output I with high-level voltage appliedThe current flowing into* an output having three-state capability with input conditions established that,according to the product specification, will establish the high-impedance state at the output and with a highlevelvoltage applied to the output.NOTE: This parameter is measured with other input conditions established that would cause the output tobe at a low level if it were enabled.* Current out <strong>of</strong> a terminal is given as a negative value.TEXAS -1.!1INSTRUMENTSPOST O~FICE BOX 225012 • DAL.LAS, TEXAS 752651-5

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