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 FAST SHOTTKY TTL J SUFFIX CERAMIC CASE 632-08 14 1 VCC A B Y A B Y 14 13 12 11 10 9 8 N SUFFIX PLASTIC CASE 646-06 14 1 14 1 2 3 4 5 6 7 A B Y A B Y GND 1 D SUFFIX SOIC CASE 751A-02 ORDERING INFORMATION MC54FXXXJ MC74FXXXN MC74FXXXD Ceramic Plastic SOIC GUARANTEED OPERATING RANGES Symbol Parameter VCC Supply Voltage TA Operating Ambient Temperature Range Min Typ Max Unit 54,74 4.5 5.0 5.5 V 54 –55 25 125 °C 74 0 25 70 IOH Output Current — High 54,74 –1.0 mA IOL Output Current — Low 54,74 20 mA FUNCTION TABLE Inputs A Output B L L H L L H H H H = HIGH Voltage level L= LOW voltage level 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 Parameter Min Typ Max Unit Test Conditions VT+ Positive-Going Threshold Voltage 1.5 2.0 V VCC = 5.0 V VT– Negative-Going Threshold Voltage 0.7 1.1 V VCC = 5.0 V VT+–VT– Hysteresis 0.4 V VCC = 5.0 V VIH Input HIGH Voltage 2.0 V Guaranteed Input HIGH Voltage VIL Input LOW Voltage 0.8 V Guaranteed Input LOW Voltage VIK Input Clamp Diode Voltage –1.2 V VCC = MIN, IIN = –18 mA VOH Output HIGH Voltage 0.8 54,74 2.5 V IOH = –1.0 mA VCC = 4.50 V 74 2.7 V IOH = –1.0 mA VCC = 4.75 V V IOL = 20 mA VCC = MIN VOL Output LOW Voltage 0.5 IT+ Input Current at Positive-Going Threshold 0 µA VCC = 5.0 V, VIN = VT+ IT– Input Current at Negative-Going Threshold –350 µA VCC = 5.0 V, VIN = VT– IIH Input HIGH Current 20 µA VCC = MAX, VIN = 2.7 V 0.1 mA VCC = MAX, VIN = 7.0 V –0.6 mA VCC = MAX, VIN = 0.5 V –150 mA VCC = MAX, VOUT = 0 V mA VIN = GND IIL Input LOW Current IOS Output Short Circuit Current (Note 2) ICC Total, Supply Current –60 ICCH 8.5 12 ICCL 13 19.5 VCC = MAX VIN = 4.5 V 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 Symbol tPLH tPHL Parameter 54/74F 54F 74F TA = +25°C TA = –55°C to +125°C TA = 0°C to +70°C VCC = +5.0 V VCC = 5.0 V ± 10% VCC = 5.0V ± 10% CL = 50 pF CL = 50 pF CL = 50 pF Min Typ Max Min Max Min Max Propagation delay 3.5 5.5 7.0 3.5 9.0 3.5 8.0 A, B to Y 3.0 5.0 6.5 3.0 8.0 3.0 7.0 FAST AND LS TTL DATA 4-52 Unit ns