74ALVT162821 datasheet(9/12 Pages) PHILIPS

No. de pieza	74ALVT162821

Descripción Electrónicos	2.5V/3.3V 20-bit bus-interface D-type flip-flop; positive-edge trigger with 30ohm termination resistors 3-State

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Fabricante Electrónico	PHILIPS [NXP Semiconductors]

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Philips Semiconductors

Product specification

74ALVT162821

2.5V/3.3V 20-bit bus-interface D-type flip-flop;

positive-edge trigger with 30

W termination resistors (3-State)

1998 Oct 02

9

VY

VM

nQx

tPZH

tPHZ

SH00007

nOE

0V

VOH

0V

3.0V or VCC

whichever

is less

Waveform 3. 3-State Output Enable Time to High Level

and Output Disable Time from High Level

VX

VM

nQx

tPZL

tPLZ

SH00008

nOE

VOL

0V

3.0V or VCC

whichever

is less

Waveform 4. 3-State Output Enable Time to Low Level

and Output Disable Time from Low Level

TEST CIRCUIT AND WAVEFORM

PULSE

GENERATOR

VIN

VOUT

CL

VCC

RL

Test Circuit for 3-State Outputs

VM

tW

NEGATIVE

PULSE

10%

90%

0V

VM

tW

POSITIVE

PULSE

90%

10%

0V

tTHL (tF)

tTLH (tR)tTHL (tF)

tTLH (tR)

DEFINITIONS

RL = Load resistor; see AC CHARACTERISTICS for value.

CL = Load capacitance includes jig and probe capacitance:

See AC CHARACTERISTICS for value.

RT = Termination resistance should be equal to ZOUT of

pulse generators.

INPUT PULSE REQUIREMENTS

FAMILY

74ALVT16

SWITCH POSITION

TEST

SWITCH

tPLZ/tPZL

6V or VCC x 2

tPLH/tPHL

Open

tPHZ/tPZH

GND

6.0V or VCC x 2

RT

RL

Open

GND

SW00025

D.U.T.

Amplitude

Rep. Rate

tW

tR

tF

3.0V or VCC

whichever

is less

v10MHz

500ns

v2.5ns v2.5ns

VIN

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74ALVT162821 Datasheet(PDF) 9 Page - NXP Semiconductors

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