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| MC54/74F132 QUAD 2-INPUT NAND SCHMITT TRIGGER The MC54/74F132 contains four 2-input NAND gates which accept standard TTL input signals and provide standard TTL output levels. They are capable of transforming slowly changing input signals into sharply defined, jitter-free output signals. In addition, they have greater noise margin than conventional NAND gates. Each circuit contains a 2-input Schmitt trigger followed by a Darlington level shifter and a phase splitter driving a TTL totem-pole output. The Schmitt trigger uses positive feedback to effectively speed up slow input transitions and provide different input threshold voltages for positive and negative-going transitions. This hysteresis between the positive-going and negative-going input threshold (typically 800 mV) is determined by resistor ratios and is essentially insensitive to temperature and supply voltage variations. QUAD 2-INPUT NAND SCHMITT TRIGGER FASTTM SHOTTKY TTL J SUFFIX CERAMIC CASE 632-08 14 1 VCC 14 A 13 B 12 Y 11 A 10 B 9 Y 8 14 1 N SUFFIX PLASTIC CASE 646-06 14 1 A 2 B 3 Y 4 A 5 B 6 Y 7 GND 1 D SUFFIX SOIC CASE 751A-02 ORDERING INFORMATION MC54FXXXJ MC74FXXXN MC74FXXXD Ceramic Plastic SOIC GUARANTEED OPERATING RANGES Symbol VCC TA Supply Voltage Operating Ambient Temperature Range Parameter 54,74 54 74 IOH IOL Output Current -- High Output Current -- Low 54,74 54,74 Min 4.5 -55 0 Typ 5.0 25 25 Max 5.5 125 70 -1.0 20 mA mA Unit V C FUNCTION TABLE Inputs A B L L H L L H H H H = HIGH Voltage level L= LOW voltage level Output Y H H H L FAST AND LS TTL DATA 4-51 MC54/74F132 DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Limits Symbol VT+ VT- VT+-VT- VIH VIL VIK VOH VOL IT+ IT- IIH Parameter Positive-Going Threshold Voltage Negative-Going Threshold Voltage Hysteresis Input HIGH Voltage Input LOW Voltage Input Clamp Diode Voltage Output HIGH Voltage 54,74 74 Output LOW Voltage Input Current at Positive-Going Threshold Input Current at Negative-Going Threshold Input HIGH Current 0 -350 20 0.1 IIL IOS ICC Input LOW Current Output Short Circuit Current (Note 2) Total, Supply Current ICCH ICCL -60 8.5 13 -0.6 -150 12 19.5 2.5 2.7 0.5 Min 1.5 0.7 0.4 2.0 0.8 -1.2 0.8 Typ Max 2.0 1.1 Unit V V V V V V V V V A A A mA mA mA mA Test Conditions VCC = 5.0 V VCC = 5.0 V VCC = 5.0 V Guaranteed Input HIGH Voltage Guaranteed Input LOW Voltage VCC = MIN, IIN = -18 mA IOH = -1.0 mA IOH = -1.0 mA IOL = 20 mA VCC = 4.50 V VCC = 4.75 V VCC = MIN VCC = 5.0 V, VIN = VT+ VCC = 5.0 V, VIN = VT- VCC = MAX, VIN = 2.7 V VCC = MAX, VIN = 7.0 V VCC = MAX, VIN = 0.5 V VCC = MAX, VOUT = 0 V VIN = GND VIN = 4.5 V VCC = MAX NOTES: 1. For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions for the applicable device type. 2. Not more than one output should be shorted at a time, nor for more than 1 second. AC ELECTRICAL CHARACTERISTICS 54/74F TA = +25C VCC = +5.0 V CL = 50 pF Symbol tPLH tPHL Parameter Propagation delay A, B to Y Min 3.5 3.0 Typ 5.5 5.0 Max 7.0 6.5 54F TA = -55C to +125C VCC = 5.0 V 10% CL = 50 pF Min 3.5 3.0 Max 9.0 8.0 74F TA = 0C to +70C VCC = 5.0V 10% CL = 50 pF Min 3.5 3.0 Max 8.0 7.0 Unit ns FAST AND LS TTL DATA 4-52 |
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