74AHCT1G14GW データシートの表示（PDF） - Philips Electronics

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74AHCT1G14GW

Inverting Schmitt trigger

Philips Electronics 

Philips Semiconductors

Inverting Schmitt trigger

AC WAVEFORMS

Product specification

74AHC1G14; 74AHCT1G14

handbook, halfpage

A input

Y output

VM

tPHL

VM

tPLH

MNA033

handbook, halfpage

VI

PULSE

GENERATOR

VCC

VO

D.U.T.

RT

CL

MNA101

FAMILY

AHC1G

AHCT1G

VI INPUT

VM

VM

REQUIREMENTS INPUT OUTPUT

GND to VCC

GND to 3.0 V

50% VCC 50% VCC

1.5 V

50% VCC

Fig.5 The input (A) to output (Y) propagation

delays.

TRANSFER CHARACTERISTIC WAVEFORMS

Definitions for test circuit:

CL = Load capacitance including jig and probe capacitance.

(See Chapter “AC characteristics” for values).

RT = Termination resistance should be equal to the output

impedance Zo of the pulse generator.

Fig.6 Load circuitry for switching times.

handbook, halfpage VO

VH

VT−

VT+

VI

MNA026

handbook, halfpage

VI

VT+

VH

VT−

VO

MNA027

Fig.7 Transfer characteristic.

2002 Jun 06

Fig.8 The definitions of VT+, VT− and VH.

9

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