MC74VHC14DTG 查看數據表（PDF） - ON Semiconductor

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MC74VHC14DTG

Hex Schmitt Inverter

ON Semiconductor 

A 50%

tPLH

Y 50% VCC

MC74VHC14

VCC

GND

tPHL

Figure 3. Switching Waveforms

DEVICE

UNDER

TEST

TEST POINT

OUTPUT

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

VH

Vin

VCC

VT+

VT–

GND

VH

Vin

VOH

Vout

VOL

(a) A Schmitt–Trigger Squares Up

Inputs 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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4

VCC

VT+

VT–

GND

VOH

VOL

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