74AHC139 Ver la hoja de datos (PDF) - NXP Semiconductors.

Número de pieza

componentes Descripción

fabricante

74AHC139

Dual 2-to-4 line decoder/demultiplexer

NXP Semiconductors. 

NXP Semiconductors

74AHC139; 74AHCT139

Dual 2-to-4 line decoder/demultiplexer

VI 90 %

tW

negative

pulse

VM

GND

10 %

tf

tr

VI

90 %

positive

pulse

VM

10 %

GND

tW

VCC

VI

G

DUT

RT

VM

tr

tf

VM

VO

CL

001aah768

Fig 7.

Test data is given in Table 9.

Definitions test circuit:

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

CL = load capacitance including jig and probe capacitance.

Load circuitry for measuring switching times

Table 9. Test data

Type

74AHC139

74AHCT139

Input

VI

VCC

3.0 V

tr, tf

≤ 3.0 ns

≤ 3.0 ns

Load

CL

15 pF, 50 pF

15 pF, 50 pF

Test

tPLH, tPHL

tPLH, tPHL

74AHC_AHCT139_2

Product data sheet

Rev. 02 — 9 May 2008

© NXP B.V. 2008. All rights reserved.

9 of 14

Share Link: