74ABTH16821ADGG datasheet(6/10 Pages) PHILIPS

Teilenummer	74ABTH16821ADGG

Bauteilbeschribung	20-bit bus-interface D-type flip-flop; positive-edge trigger 3-State

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Hersteller	PHILIPS [NXP Semiconductors]

Direct Link	http://www.nxp.com

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Philips Semiconductors

Product specification

74ABT16821A

74ABTH16821A

20-bit bus-interface D-type flip-flop;

positive-edge trigger (3-State)

1998 Feb 27

6

AC CHARACTERISTICS

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

LIMITS

SYMBOL

PARAMETER

WAVEFORM

Tamb = +25oC

VCC = +5.0V

Tamb = -40 to

+85oC

VCC = +5.0V ±0.5V

UNIT

MIN

TYP

MAX

MIN

MAX

fMAX

Maximum clock frequency

1

160

250

160

MHz

tPLH

tPHL

Propagation delay

nCP to nQx

1

1.3

1.1

2.4

2.0

3.3

2.6

1.3

1.1

3.7

3.0

ns

tPZH

tPZL

Output enable time

to High and Low level

3

4

1.4

1.2

2.5

2.3

3.3

3.0

1.4

1.2

4.1

3.7

ns

tPHZ

tPLZ

Output disable time

from High and Low level

3

4

1.6

1.3

3.2

2.3

4.1

3.1

1.6

1.3

4.8

3.3

ns

AC SETUP REQUIREMENTS

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

LIMITS

SYMBOL

PARAMETER

WAVEFORM

Tamb = +25oC

VCC = +5.0V

Tamb = -40 to +85oC

VCC = +5.0V ±0.5V

UNIT

MIN

TYP

MIN

MAX

ts(H)

ts(L)

Setup time, High or Low

nDx to nCP

2

1.8

1.2

–0.9

1.8

ns

th(H)

th(L)

Hold time, High or Low

nDx to nCP

2

1.0

0.8

–1.0

1.0

ns

tw(H)

tw(L)

nCP pulse width

High or Low

1

2.5

0.8

1.0

2.5

ns

AC WAVEFORMS

VM

SH00005

nCP

nQx

VM

tw(H)

tPHL

VM

tPLH

1/fMAX

VM

tw(L)

0V

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)

CP

SH00006

VM

th(L)

ts(L)

nDx

0V

3.0V or VCC

whichever

is less

3.0V or VCC

whichever

is less

Waveform 2. Data Setup and Hold Times

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

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