MC74LCX16373 查看數據表（PDF） - Motorola => Freescale

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MC74LCX16373

Low−Voltage CMOS 16−Bit Transparent Latch

Motorola => Freescale 

MC74LCX16373

Dn

1.5V

tPLH

On

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

OEn

1.5V

1.5V

tPZH

On

tPHZ

1.5V

tPZL

On

tPLZ

1.5V

WAVEFORM 2 – OUTPUT ENABLE AND DISABLE TIMES

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

2.7V

2.7V

Dn

1.5V

0V

VCC

VOH – 0.3V LEn

1.5V

0V

ts

th

2.7V

tw

1.5V

≈ 0V

≈ 3.0V

On

0V

tPLH, tPHL

VOH

1.5V

VOL + 0.3V

GND

VOL

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

Figure 1. AC Waveforms

PULSE

GENERATOR

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

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