IDT72021 datasheet(7/14 Pages) IDT

Part #	IDT72021

Description	CMOS ASYNCHRONOUS FIFO WITH RETRANSMIT 1K x 9, 2K x 9, 4K x 9

PDF	14 Pages

Scroll/Zoom	100%

Manufacturer	IDT [Integrated Device Technology]

Direct Link	http://www.idt.com

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7 / 14 page

5.09

MILITARY AND COMMERCIAL TEMPERATURE RANGES

IDT72021, IDT72031, IDT72041

CMOS ASYNCHRONOUS FIFO WITH RETRANSMIT 1K x 9, 2K x 9, 4K x 9

AC TEST CONDITIONS

Input Pulse Levels

GND to 3.0V

Input Rise/Fall Times

5ns

Input Timing Reference Levels

1.5V

Output Reference Levels

1.5V

Output Load

See Figure 1

2677 tbl 10

NOTES:

EF, FF, HF, and AEF may change status during Reset, but flags will be valid at tRSC.

W and R = VIH around the rising edge of RS.

Figure 2. Reset

Figure 3. Asynchronous Write and Read Operation

NOTE:

1. Assume

OE is asserted LOW.

t RSC

t RSS

t RSF1

AEF, EF

HF, FF

t RSR

2677 drw 05

t RSF2

t A

t RC

DATA OUT VALID

t RPW

t RLZ

t DV

t A

t RHZ

t RR

t WC

t WR

t WPW

DATA IN VALID

tDS

tDH

Q 0 –Q 8

D 0 –D 8

2677 drw 06

2677 drw 04

30pF*

1.1K

OUTPUT

680

Ω

or equivalent circuit

Figure 1. Output Load

* Includes scope and jig capacitances.

IDT72021 Datasheet(PDF) 7 Page - Integrated Device Technology

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