Philips Semiconductors

Product specification

74ABT377A

Octal D-type flip-flop with enable

1997 Feb 26

6

AC SETUP REQUIREMENTS

LIMITS

SYMBOL

PARAMETER

WAVEFORM

UNIT

MIN

TYP

MIN

Setup time, High or Low

Dn to CP

2

1.5

1.5

0.7

0.5

1.5

1.5

ns

Hold time, High or Low

Dn to CP

2

1.0

1.0

–0.4

–0.6

1.0

1.0

ns

Setup time, High or Low

E to CP

2

2.0

2.0

1.1

1.0

2.0

2.0

ns

Hold time, High or Low

E to CP

2

1.0

1.0

–0.9

–0.1

1.0

1.0

ns

Clock Pulse width

High or Low

1

1.5

2.0

0.7

1.0

1.5

2.0

ns

AC WAVEFORMS

VM

tPLH

tPHL

VM

VM

VM

CP

Qn

1/fMAX

tW(H)

tW(L)

SA00159

Waveform 1. Propagation Delay, Clock Input to Output, Clock

Pulse Width and Maximum Clock Frequency

CP

VM VM

VM

VM

VM

ts(L)

E

th(L)

th(H)

ts(H)

Dn

VM

ts

th

VM

VM

SA00160

NOTE: The shaded areas indicate when the input is permitted to change for predict-

able output performance.

Waveform 2. Data and Enable Setup and Hold Times