CD74HC221MTG4 datasheet(8/22 Pages) TI

No de pièce	CD74HC221MTG4

Description	High-Speed CMOS Logic Dual Monostable Multivibrator with Reset

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Fabricant	TI [Texas Instruments]

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8

Test Circuits and Waveforms

NOTE: Outputs should be switching from 10% VCC to 90% VCC in

accordance with device truth table. For fMAX, input duty cycle = 50%.

FIGURE 1. HC CLOCK PULSE RISE AND FALL TIMES AND

PULSE WIDTH

NOTE: Outputs should be switching from 10% VCC to 90% VCC in

accordance with device truth table. For fMAX, input duty cycle = 50%.

FIGURE 2. HCT CLOCK PULSE RISE AND FALL TIMES AND

PULSE WIDTH

FIGURE 3. HC TRANSITION TIMES AND PROPAGATION

DELAY TIMES, COMBINATION LOGIC

FIGURE 4. HCT TRANSITION TIMES AND PROPAGATION

DELAY TIMES, COMBINATION LOGIC

CLOCK

90%

50%

10%

GND

VCC

trCL

tfCL

50%

tWL

tWH

10%

tWL + tWH =

fCL

I

CLOCK

2.7V

1.3V

0.3V

GND

3V

trCL = 6ns

tfCL = 6ns

1.3V

tWL

tWH

0.3V

tWL + tWH =

fCL

I

tPHL

tPLH

tTHL

tTLH

90%

50%

10%

50%

10%

INVERTING

OUTPUT

INPUT

GND

VCC

tr = 6ns

tf = 6ns

90%

tPHL

tPLH

tTHL

tTLH

2.7V

1.3V

0.3V

1.3V

10%

INVERTING

OUTPUT

INPUT

GND

3V

tr = 6ns

tf = 6ns

90%

CD54HC221, CD74HC221, CD74HCT221

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Texas Instruments	CD74HC221MTG4	665Kb / 21P	[Old version datasheet] High-Speed CMOS Logic Dual Monostable Multivibrator with Reset

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Fabricant	No de pièce	Fiches technique	Description
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