MC74LCX573

LCX DATA

BR1339 — REV 3

5

MOTOROLA

WAVEFORM 1 – PROPAGATION DELAYS

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

2.7V

0V

VOH

VOL

Dn

On

tPHL

tPLH

WAVEFORM 2 – OUTPUT ENABLE AND DISABLE TIMES

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

2.7V

0V

≈ 0V

OE

On

tPZH

≈ 3.0V

tPHZ

tPZL

tPLZ

On

1.5V

1.5V

1.5V

1.5V

1.5V

1.5V

Figure 1. AC Waveforms

1.5V

VCC

VOH – 0.3V

VOL + 0.3V

GND

1.5V

WAVEFORM 3 – LE to On PROPAGATION DELAYS, LE MINIMUM

PULSE WIDTH, Dn to LE SETUP AND HOLD TIMES

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

2.7V

0V

Dn

LE

1.5V

On

2.7V

0V

VOH

VOL

tPLH, tPHL

tw

1.5V

1.5V

1.5V

th

ts

OPEN

PULSE

GENERATOR

RT

DUT

VCC

RL

R1

CL

6V

GND

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