MC74VHC132 데이터 시트보기 (PDF) - ON Semiconductor

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MC74VHC132

Quad 2−Input NAND Schmitt Trigger

ON Semiconductor 

MC74VHC132

A 50%

tPLH

Y 50% VCC

VCC

GND

tPHL

Figure 3. Switching Waveforms

DEVICE

UNDER

TEST

OUTPUT

TEST POINT

CL*

*Includes all probe and jig capacitance

Figure 4. Test Circuit

4

3

(VT+)

VHtyp

2

(VT−)

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

(a) A Schmitt−Trigger Squares Up Inputs With Slow Rise and Fall Times

VCC

VH

Vin

VT+

VT−

GND

(b) A Schmitt−Trigger Offers Maximum Noise Immunity

VCC

VH

Vin

VT+

VT−

GND

VOH

VOH

Vout

Vout

VOL

VOL

Figure 6. Typical Schmitt−Trigger Applications

INPUT

Figure 7. Input Equivalent Circuit

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