74ALVT162821 datasheet(8/12 Pages) PHILIPS

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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

AC CHARACTERISTICS (2.5V

"0.2V RANGE)

GND = 0V; tR = tF = 2.5ns; CL = 50pF; RL = 500Ω; Tamb = –40°C to +85°C.

LIMITS

SYMBOL

PARAMETER

WAVEFORM

Tamb = -40 to +85oC

VCC = +2.5V ±0.2V

UNIT

MIN

TYP

MAX

fMAX

Maximum clock frequency

150

MHz

tPLH

tPHL

Propagation delay

nCP to nQx

1.0

4.4

3.8

7.0

6.4

tPZH

tPZL

Output enable time

to High and Low level

1.5

1.0

4.6

2.8

7.5

4.6

tPHZ

tPLZ

Output disable time

from High and Low level

1.5

1.0

3.5

3.7

5.5

5.7

NOTE:

1. All typical values are at VCC = 3.3V and Tamb = 25°C.

AC SETUP REQUIREMENTS (2.5V

"0.2V RANGE)

GND = 0V, tR = tF = 2.5ns, CL = 50pF, RL = 500Ω

LIMITS

SYMBOL

PARAMETER

WAVEFORM

Tamb = -40 to +85oC

VCC = +2.5 ±0.2V

UNIT

MIN

TYP

ts(H)

ts(L)

Setup time, High or Low

nDx to nCP

1.5

2.0

0.1

0.5

th(H)

th(L)

Hold time, High or Low

nDx to nCP

0.3

0.5

–0.5

–0.1

tw(H)

tw(L)

nCP pulse width

High or Low

1.5

AC WAVEFORMS

VM = 1.5V at VCC w 3.0V; VM = VCC/2 at VCC v 2.7V

VX = VOL + 0.3V at VCC w 3.0V; VX = VOL + 0.15V at VCC v 2.7V

VY = VOH – 0.3V at VCC w 3.0V; VY = VOH – 0.15V at VCC v 2.7V

SH00005

nCP

nQx

tw(H)

tPHL

tPLH

1/fMAX

tw(L)

VOH

VOL

3.0V or VCC

whichever

is less

Waveform 1. Propagation Delay, Clock Input to Output,

Clock Pulse Width, and Maximum Clock frequency

th(H)

ts(H)

SH00006

th(L)

ts(L)

nDx

3.0V or VCC

whichever

is less

3.0V or VCC

whichever

is less

Waveform 2. Data Setup and Hold Times

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