MC74LCX574 查看數據表（PDF） - Motorola => Freescale

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MC74LCX574

Low-Voltage CMOS Octal D-Type Flip-Flop Flow Through Pinout

Motorola => Freescale 

MC74LCX574

Dn

ts

CP

On

th

1.5V

fmax

tPLH, tPHL

1.5V

2.7V

1.5V

0V

2.7V

0V

VOH

VOL

WAVEFORM 1 – PROPAGATION DELAYS, SETUP AND HOLD TIMES

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

OE

1.5V

1.5V

tPZH

On

tPHZ

1.5V

tPZL

On

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

CP

1.5V

tw

2.7V

1.5V

0V

CP

PULSE

GENERATOR

tw

1.5V

2.7V

1.5V

0V

WAVEFORM 3 – PULSE WIDTH

tR = tF = 2.5ns (or fast as required) from 10% to 90%;

Output requirements: VOL ≤ 0.8V, VOH ≥ 2.0V

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

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