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

VM

VM

nQx

tPZH

tPHZ

SH00007

nOE

0V

VOH

0V

whichever

is less

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

and Output Disable Time from High Level

VM

VM

VM

nQx

tPZL

tPLZ

SH00008

nOE

VOL

0V

0V

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

VM

tW

NEGATIVE

PULSE

10%

10%

90%

90%

0V

VM

VM

tW

POSITIVE

PULSE

90%

90%

10%

10%

0V

tTHL (tF)

tTLH (tR)tTHL (tF)

tTLH (tR)

DEFINITIONS

See AC CHARACTERISTICS for value.

pulse generators.

INPUT PULSE REQUIREMENTS

FAMILY

74ALVT16

SWITCH POSITION

TEST

SWITCH

Open

GND

RL

Open

GND

SW00025

D.U.T.

Amplitude

Rep. Rate

whichever

is less

v10MHz

500ns

v2.5ns v2.5ns

VIN

VIN