IDT72103L35J datasheet(2/31 Pages) IDT

Part #	IDT72103L35J

Description	CMOS PARALLEL-SERIAL FIFO 2048 x 9, 4096 x 9

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Manufacturer	IDT [Integrated Device Technology]

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5.37

2

IDT72103, IDT72104

CMOS PARALLEL-SERIAL FIFO 2048 x 9, 4096 x 9

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DESCRIPTION (CONTINUED)

The IDT72103/72104 may be configured to handle serial

word widths of four or greater using IDT’s unique Flexishift

feature. Flexishift allows serial width and depth expansion

without external components. For example, you may config-

ure a 4K x 24 FIFO using three IDT72104s in a serial width

expansion configuration.

Seven flags are provided to signal memory status of the

FIFO. The flags are

FF (Full), AF (7/8 full), FF–1 (Full-minus-

one),

EF (Empty), AE (1/8 full), EF+1 (Empty-plus-one), and

HF (Half-full).

Read (

R) and Write (W) control pins are provided for

asynchronous and simultaneous operations. An output en-

able (

OE) control pin is available on the parallel output port for

high-impedance control. The depth expansion control pins

XO

and

Xl are provided to allow cascading for deeper FlFOs.

The IDT72103/72104 are manufactured using IDT’s CMOS

technology.

PIN CONFIGURATIONS

PLCC

TOP VIEW

7

8

9

10

11

12

13

J44-1

39

38

37

36

35

34

33

43

2

1

43

INDEX

5

644

42 41 40

14

15

16

17

32

31

30

29

18 19 20 21 22 23 24 25 26 27 28

D 0

XI

SO/PO

SOX

SOCP

Q 0

SO

AEF

FF-1

FF

GND

FL/RT

RS

SI

SICP

SIX

GND

XO/HF

EF

EF+1

OE

SI/PI

2753 drw 03

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