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MC74HC132AF

Quad 2-Input NAND Gate With 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 3. Typical Input Threshold, VT+, VT–

Versus Power Supply Voltage

VCC

Vin

(a) A SCHMITT TRIGGER SQUARES UP INPUTS

(a) WITH SLOW RISE AND FALL TIMES

VCC

VH

Vin

VT +

VT –

GND

VOH

Vout

(b) A SCHMITT TRIGGER OFFERS MAXIMUM NOISE

(b) IMMUNITY

VCC

VH

Vin

VT +

VT –

GND

VOH

Vout

Vout

VOL

VOL

Figure 4. Typical Schmitt–Trigger Applications

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