IDT72271L15GB datasheet(3/30 Pages) IDT

Part #	IDT72271L15GB

Description	CMOS SUPERSYNC FIFOO 16,384 x 9, 32,768 x 9

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Manufacturer	IDT [Integrated Device Technology]

Direct Link	http://www.idt.com

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IDT72261/72271 SyncFIFO

™

16,384 x 9, 32,768 x 9

MILITARY AND COMMERCIAL TEMPERATURE RANGES

The Retransmit function allows the read pointer to be reset

to the first location in the RAM array. It is synchronized to

RCLK when

RT is LOW. This feature is convenient for

sending the same data more than once.

If, at any time, the FIFO is not actively performing a function,

the chip will automatically power down. This occurs if neither

a read nor a write occurs within 10 cycles of the faster clock,

RCLK or WCLK. During the Power Down state, supply current

consumption (ICC2) is at a minimum. Initiating any operation

(by activating control inputs) will immediately take the device

out of the Power Down state.

The IDT72261/72271 are depth expandable. The addition

of external components is unnecessary. The

IR and OR

functions, together with

REN and WEN, are used to extend the

total FIFO memory capacity.

The FS line ensures optimal data flow through the FIFO. It

is tied to GND if the RCLK frequency is higher than the WCLK

frequency or to Vcc if the RCLK frequency is lower than the

WCLK frequency

The IDT72261/72271 is fabricated using IDT’s high speed

submicron CMOS technology.

NOTES

:

1. DNC = Do not connect.

2. This pin may either be tied to ground or left open.

PGA (G68-1, order code: G)

TOP VIEW

PIN CONFIGURATIONS (CONT.)

D8

Pin 1 Designator

AB

C

D

E

F

G

H

J

K

L

Q0

D2

PAF

DNC

RCLK

REN

OE

VCC

DNC

MRS

LD WCLK

PRS

VCC

WEN

VCC

D7

D6

PAE

D4

D3

D1

D0

Q1

Q2

Q3

Q4

Q8

Q7

DNC

VCC

DNC DNC

DNC

DNC DNC

DNC

HF

EF/

OR

FF/

IR

11

10

09

08

07

06

05

04

03

02

01

RT

FWFT/

SI

D5

VCC

DNC

Q6

Q5

3036 drw 03

SEN FS

GND

(2)

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IDT72271L15GB Datasheet(PDF) 3 Page - Integrated Device Technology

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