74ALVT16841 datasheet(10/14 Pages) PHILIPS

10 / 14 page

Philips Semiconductors

Product specification

74ALVT16841

2.5V/3.3V 20-bit bus interface latch (3-State)

1998 Feb 13

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

tw(H)

tPHL

tPLH

nLE

nQx

SA00078

3.0V or VCC

whichever

is less

VOH

VOL

Waveform 1. Propagation Delay, Latch Enable Input to

Output, and Enable Pulse Width

nDx INPUT

tPLH

tPHL

nQx OUTPUT

SA00079

3.0V or VCC

whichever

is less

3.0V or VCC

whichever

is less

Waveform 2. Propagation Delay for Data to Outputs

NOTE: The shaded areas indicate when the input is

permitted to change for predictable output performance.

nDx

nLE

ts(H)

th(H)

ts(L)

th(L)

SA00080

3.0V or VCC

whichever

is less

3.0V or VCC

whichever

is less

Waveform 3. Data Setup and Hold Times

nQx

tPZH

tPHZ

SH00007

nOE

VOH

3.0V or VCC

whichever

is less

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

and Output Disable Time from High Level

nQx

tPZL

tPLZ

SH00008

nOE

VOL

3.0V or VCC

whichever

is less

Waveform 5. 3-State Output Enable Time to Low Level and

Output Disable Time from Low Level

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