74HCT2G126DP 查看數據表（PDF） - Philips Electronics

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74HCT2G126DP

Dual buffer/line driver; 3-state

Philips Electronics 

Philips Semiconductors

Dual buffer/line driver; 3-state

Product specification

74HC2G126; 74HCT2G126

handbook, full pagewidth

VI

nOE input

GND

VCC

output

LOW - to - OFF

OFF- to - LOW

VOL

output

VOH

HIGH - to - OFF

OFF- to - HIGH

GND

VM

t PLZ

t PZL

t PHZ

VX

VY

outputs

enabled

VM

t PZH

outputs

disabled

VM

outputs

enabled

MNA949

For 74HC2G126: VM = 50%; VI = GND to VCC

For 74HCT2G126: VM = 1.3 V; VI = GND to 3.0 V.

Fig.6 The 3-state enable and disable times.

handbook, full pagewidth

VI

PULSE

GENERATOR

VCC

VO

D.U.T.

RT

S1

RL =

1000 Ω

VCC

open

GND

CL

MNA232

TEST

tPLH/tPHL

tPLZ/tPZL

tPHZ/tPZH

S1

open

VCC

GND

2003 Mar 03

Definitions for test circuit:

CL = Load capacitance including jig and probe capacitance (see “AC characteristics” for values).

RL = Load resistance (see “AC characteristics” for values).

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

Fig.7 Load circuitry for switching times.

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