74HC2G14GV 데이터 시트보기 (PDF) - Philips Electronics

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74HC2G14GV

Inverting Schmitt-triggers

Philips Electronics 

Philips Semiconductors

Inverting Schmitt-triggers

AC WAVEFORMS

Preliminary specification

74HC2G14; 74HCT2G14

handbook, halfpagVeI

nA input

GND

VOH

nY output

VOL

VM

t PHL

VM

t THL

VM

VM

10%

t PLH

90%

t TLH

MNA722

For HC2G: VM = 50%; VI = GND to VCC.

For HCT2G: VM = 1.3 V; VI = GND to 3.0 V.

Fig.12 The input (nA) to output (nY) propagation delays and output transition times.

handbook, full pagewidth

VCC

VI

PULSE

GENERATOR

VO

D.U.T.

RT

S1

RL =

1 kΩ

VCC

open

GND

CL =

50 pF

MNA742

TEST

tPLH/tPHL

tPLZ/tPZL

tPHZ/tPZH

S1

open

VCC

GND

2003 May 1

Definitions for test circuit:

CL = load capacitance including jig and probe capacitance (see “AC characteristics”).

RT = termination resistance should be equal to the output impedance Zo of the pulse generator.

Fig.13 Load circuitry for switching times.

11

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