September 1993

27

Philips Semiconductors

Product specification

4-Bit x 64-word FIFO register; 3-state

74HC/HCT7403

Note to Fig.23

Sequence 1 (both FIFOS empty, starting SHIFT-IN process)

HIGH (4).

Fig.23 Waveforms showing the functionality and intercommunication between two FIFOs (refer to Fig.18).

handbook, full pagewidth

DORB OUTPUT

DIRB OUTPUT

DORA OUTPUT

DIRA OUTPUT

Q

OUTPUT

nB

QnA OUTPUT

SI

INPUT

A

D

INPUT

nA

MR INPUT

SO

INPUT

B

sequence 1

sequence 2

sequence 3

sequence 4

sequence 5

sequence 6

(1)

(2)

(3)

(4)

(5)

(6)

(7)

(8)

(9)

(10)

(11)

(12)

(13)

(14)

MGA687