MC74LCX245 Ver la hoja de datos (PDF) - Motorola => Freescale

Número de pieza

componentes Descripción

Lista de partido

MC74LCX245

LOW–VOLTAGE CMOS OCTAL TRANSCEIVER

Motorola => Freescale 

MC74LCX245

An, Bn

1.5V

tPLH

Bn, An

2.7V

1.5V

0V

tPHL

VOH

1.5V

1.5V

VOL

WAVEFORM 1 – PROPAGATION DELAYS

tR = tF = 2.5ns, 10% to 90%; f = 1MHz; tW = 500ns

OE, T/R

An, Bn

An, Bn

PULSE

GENERATOR

1.5V

1.5V

tPZH

tPHZ

1.5V

tPZL

tPLZ

1.5V

2.7V

0V

VCC

VOH – 0.3V

≈ 0V

≈ 3.0V

VOL + 0.3V

GND

WAVEFORM 2 – OUTPUT ENABLE AND DISABLE TIMES

tR = tF = 2.5ns, 10% to 90%; f = 1MHz; tW = 500ns

Figure 1. AC Waveforms

VCC

DUT

RT

R1

CL

RL

6V

OPEN

GND

LCX DATA

BR1339 — REV 3

TEST

SWITCH

tPLH, tPHL

Open

tPZL, tPLZ

6V

Open Collector/Drain tPLH and tPHL

6V

tPZH, tPHZ

GND

CL = 50pF or equivalent (Includes jig and probe capacitance)

RL = R1 = 500Ω or equivalent

RT = ZOUT of pulse generator (typically 50Ω)

Figure 2. Test Circuit

5

MOTOROLA

Share Link: