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MC74HC132ADR2

Quad 2−Input NAND Gatewith Schmitt−Trigger Inputs

ON Semiconductor 

MC74HC132A

4

3

VHtyp

2

1

2

3

4

5

6

VCC, POWER SUPPLY VOLTAGE (VOLTS)

VHtyp = (VT + typ) − (VT − typ)

Figure 5. Typical Input Threshold, VT+, VT− Versus Power Supply Voltage

VH

VIN

VCC

VT +

VT −

GND

VOH

VH

VIN

VCC

VT +

VT −

GND

VOH

VOUT

VOUT

VOL

VOL

VCC

VIN

(a) A SCHMITT TRIGGER SQUARES UP INPUTS

(a) WITH SLOW RISE AND FALL TIMES

VOUT

(b) A SCHMITT TRIGGER OFFERS MAXIMUM

NOISE IMMUNITY

Figure 6. Typical Schmitt−Trigger Applications

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6

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