OUTTransfer Function 0.40.95 1.2 1.8 INPUTVOLTAGE (VOLTS) 25C5-1 FAST LSTTL DATA QUAD 2-INPUT SCHMITT TRIGGER NAND GATE SN54/74LS132 contains four 2-Input NAND Gates which accept stan- dard TTL input signals providestandard TTL output levels. ca-pable transformingslowly changing input signals sharplydefined, jitter- free output signals. Additionally, havegreater noise margin than conventional NAND Gates. Each circuit contains 2-inputSchmitt trigger followed Darlingtonlevel shifter phasesplitter driving TTLtotem pole output. Schmitttrigger uses positive feedback effectivelyspeed-up slow input transitions, providedifferent input threshold voltages negative-goingtran- sitions. hysteresisbetween negative-goinginput thresholds (typically 800 mV) determinedinternally resistorratios essentiallyinsensitive supplyvoltage variations. oneinput remains morepositive voltage than otherinput 1413 12 11 10 GNDLOGIC CONNECTIONDIAGRAM DIP (TOP VIEW) SN54/74LS132 QUAD 2-INPUT SCHMITT TRIGGER NAND GATE LOW POWER SCHOTTKY SUFFIXCERAMIC CASE 632-08 SUFFIXPLASTIC CASE 646-06 14 ORDERINGINFORMATION SN54LSXXXJ Ceramic SN74LSXXXN Plastic SN74LSXXXD SOIC 14 SUFFIXSOIC CASE 751A-02 5-2 FAST LSTTL DATA SN54/74LS132 GUARANTEED OPERATING RANGES Symbol Parameter Min Typ Max Unit CCSupply Voltage 54 74 4.5 4.75 5.0 5.0 5.5 5.25 OperatingAmbient Temperature Range 54 74 –55 2525 125 70 OHOutput Current High54, 74 –0.4 mA OLOutput Current Low54 74 4.0 8.0 mA DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) SymbolParameter Min Typ Max Unit Test Conditions Positive-GoingThreshold Voltage 1.5 2.0 Negative-GoingThreshold Voltage 0.6 1.1 Hysteresis0.4 0.8 IKInput Clamp Diode Voltage –0.65 –1.5 –18mA OHOutput HIGH Voltage 54 2.5 3.4 OHOutput HIGH Voltage 74 2.7 3.4 OLOutput LOWVoltage 54, 74 0.25 0.4 4.0mA, OLOutput LOW Voltage 74 0.35 0.5 8.0mA, InputCurrent Positive-GoingThreshold –0.14 mA InputCurrent Negative-GoingThreshold –0.18 mA IHInput HIGH Current 20 IHInput HIGH Current 0.1 mA ILInput LOW Current –0.4 mA OSOutput Short Circuit Current (Note –20–100 mA CCPower Supply Current Total, Output HIGH 5.9 11 mA CCTotal, Output LOW 8.2 14 mA morethan one output should time,nor morethan second.