Philips Semiconductors

Product specification

74ALS74A

Dual D-type flip-flop with set and reset

1996 Jul 01

5

AC WAVEFORMS

The shaded areas indicate when the input is permitted to change for predictable output performance.

VM

VM

CPn

VM

VM

VM

VM

VM

VM

tsu(H)

th(H)

Dn

Qn

VM

tw(H)

1/fmax

tsu(L)

th(L)

VM

VM

tPLH

Qn

tw(L)

tPHL

tPHL

tPLH

SF00049

Waveform 1.

Propagation Delay for Data to Output,

Data Setup and Hold Times, Clock Width,

and Maximum Clock Frequency

VM

CPn

Qn

VM

VM

Qn

tPHL

tPLH

SDn

VM

VM

tw(L)

SC00040

Dn

tREC

Waveform 2.

Propagation Delay for Set to Output,

Set Pulse Width and Recovery Time for Set to Clock

VM

CPn

Qn

VM

VM

Qn

tPHL

tPLH

RDn

VM

VM

tw(L)

SC00041

Dn

tREC

Waveform 3.

Propagation Delay for Reset to Output,

Reset Pulse Width and Recovery Time for Reset to Clock