7205L35J8 IDT, 7205L35J8 Datasheet

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7205L35J8

Manufacturer Part Number
7205L35J8
Description
FIFO
Manufacturer
IDT
Datasheet

Specifications of 7205L35J8

Part # Aliases
IDT7205L35J8
© 2012 Integrated Device Technology, Inc. All rights reserved. Product subject to change without notice.
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FUNCTIONAL BLOCK DIAGRAM
IDT and the IDT logo are registered trademarks of Integrated Device Technology, Inc.
COMMERCIAL, MILITARY AND INDUSTRIAL TEMPERATURE RANGES
First-In/First-Out Dual-Port memory
2,048 x 9 organization (IDT7203)
4,096 x 9 organization (IDT7204)
8,192 x 9 organization (IDT7205)
16,384 x 9 organization (IDT7206)
32,768 x 9 organization (IDT7207)
65,636 x 9 organization (IDT7208)
High-speed: 12ns access time
Low power consumption
— Active: 660mW (max.)
— Power-down: 44mW (max.)
Asynchronous and simultaneous read and write
Fully expandable in both word depth and width
720x family is pin and functionally compatible from 256 x 9 to 64k x 9
Status Flags: Empty, Half-Full, Full
Retransmit capability
High-performance CMOS technology
Military product compliant to MIL-STD-883, Class B
Standard Military Drawing for #5962-88669 (IDT7203), 5962-89567
(IDT7203), and 5962-89568 (IDT7204) are listed on this function
W
XI
R
CONTROL
CONTROL
WRITE
READ
CMOS ASYNCHRONOUS FIFO
2,048 x 9, 4,096 x 9
8,192 x 9, 16,384 x 9
32,768 x 9 and 65,536 x 9
EXPANSION
LOGIC
LOGIC
FLAG
POINTER
WRITE
THREE-
STATE
BUFFERS
1
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DESCRIPTION:
with internal pointers that load and empty data on a first-in/first-out basis. The
device uses Full and Empty flags to prevent data overflow and underflow and
expansion logic to allow for unlimited expansion capability in both word size and
depth.
Read (R) pins.
option. It also features a Retransmit (RT) capability that allows the read pointer
to be reset to its initial position when RT is pulsed LOW. A Half-Full Flag is
available in the single device and width expansion modes.
are designed for applications requiring asynchronous and simultaneous read/
writes in multiprocessing, rate buffering and other applications.
Class B.
DATA OUTPUTS
Industrial temperature range (–40°C to +85°C) is available
(plastic packages only)
Green parts available, see ordering information
DATA INPUTS
The IDT7203/7204/7205/7206/7207/7208 are dual-port memory buffers
The device's 9-bit width provides a bit for a control or parity at the user’s
These FIFOs are fabricated using high-speed CMOS technology. They
Military grade product is manufactured in compliance with MIL-STD-883,
Data is toggled in and out of the device through the use of the Write (W) and
RAM ARRAY
16,384 x 9
32,768 x 9
65,536 x 9
(D -D
2,048 x 9
4,096 x 9
8,192 x 9
(Q -Q
0
0
8
8
)
EF
FF
)
XO/HF
POINTER
READ
RESET
LOGIC
FL/RT
RS
2661 drw01
JUNE 2012
IDT7203
IDT7204
IDT7205
IDT7206
IDT7207
IDT7208
DSC-2661/18

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7205L35J8 Summary of contents

Page 1

... Data is toggled in and out of the device through the use of the Write (W) and Read (R) pins. The device's 9-bit width provides a bit for a control or parity at the user’s option. It also features a Retransmit (RT) capability that allows the read pointer to be reset to its initial position when RT is pulsed LOW. A Half-Full Flag is available in the single device and width expansion modes ...

Page 2

... IDT7203/7204/7205/7206/7207/7208 CMOS ASYNCHRONOUS FIFO 2,048 x 9, 4,096 x 9, 8,192 x 9, 16,384 x 9, 32,768 x 9 and 65,536 x 9 PIN CONFIGURATIONS GND 14 TOP VIEW Reference ...

Page 3

... IDT7203/7204/7205/7206/7207/7208 CMOS ASYNCHRONOUS FIFO 2,048 x 9, 4,096 x 9, 8,192 x 9, 16,384 x 9, 32,768 x 9 and 65,536 ELECTRICAL CHARACTERISTICS (Commercial ± 10 0°C to +70°C; Industrial Symbol Parameter I (6) Input Leakage Current (Any Input (7) Output Leakage Current LO V Output Logic “1” Voltage I = – ...

Page 4

... Industrial temperature range product for 15ns and 25ns speed grades are available as a standard device. 3. Industrial temperature range product for 25ns speed grade only is available as a standard device. All other speed grades are available by special order. 4. Pulse widths less than minimum are not allowed. 5. Values guaranteed by design, not currently tested. ...

Page 5

... XI Recovery Time XIR t XI Set-up Time XIS NOTES: 1. Timings referenced Test Conditions. 2. Pulse widths less than minimum are not allowed. 3. Values guaranteed by design, not currently tested. 4. Only applies to read data flow-through mode. (CONTINUED) ( ± 10 –40°C to +85°C; Military: V ...

Page 6

... Operating Modes). The Single Device Mode is initiated by grounding the Expansion In (XI). The IDT7203/7204/7205/7206/7207/7208 can be made to retransmit data when the Retransmit Enable Control (RT) input is pulsed LOW. A retransmit operation will set the internal read pointer to the first location and will not affect the write pointer ...

Page 7

... IDT7203/7204/7205/7206/7207/7208 CMOS ASYNCHRONOUS FIFO 2,048 x 9, 4,096 x 9, 8,192 x 9, 16,384 x 9, 32,768 x 9 and 65,536 HF, FF NOTE and around the rising edge of RS RLZ WPW LAST WRITE ...

Page 8

... IDT7203/7204/7205/7206/7207/7208 CMOS ASYNCHRONOUS FIFO 2,048 x 9, 4,096 x 9, 8,192 x 9, 16,384 x 9, 32,768 x 9 and 65,536 x 9 LAST READ REF DATA OUT RT W,R HF, EF, FF NOTE: 1. EF, FF and HF may change status during Retransmit, but flags will be valid Figure 7. Minimum Timing for an Empty Flag Coincident Read Pulse. ...

Page 9

... Care must be taken to assure that the appropriate flag is monitored by each system (i. monitored on the device where W is used monitored on the device where R is used). For additional information on the IDT7203/7204/ 7205/7206/7207, refer to Tech Note 8: Operating FIFOs on Full and Empty Boundary Conditions and Tech Note 6: Designing with FIFOs. ...

Page 10

... Flag detection is accomplished by monitoring the FF, EF and HF signals on either (any) device used in the width expansion configuration. Do not connect any output signals together. Figure 13. Block Diagram of 2,048 x 18, 4,096 x 18, 8,192 x 18, 16,384 x 18, 32,768 x 18, 65,536 x 18 FIFO Memory Used in Width Expansion Mode FIFO permits a reading of a single word after writing one word of data into an empty FIFO ...

Page 11

... IDT7203/7204/7205/7206/7207/7208 CMOS ASYNCHRONOUS FIFO 2,048 x 9, 4,096 x 9, 8,192 x 9, 16,384 x 9, 32,768 x 9 and 65,536 x 9 TRUTH TABLES TABLE 1 – RESET AND RETRANSMIT SINGLE DEVICE CONFIGURATION/WIDTH EXPANSION MODE Mode RS Reset 0 Retransmit 1 Read/Write 1 NOTE: 1. Pointer will Increment if flag is HIGH. TABLE 2 – RESET AND FIRST LOAD ...

Page 12

... IDT7205 IDT7206 IDT7207 IDT7208 DEPTH EXPANSION BLOCK NOTES: 1. For depth expansion block see section on Depth Expansion and Figure 14. 2. For Flag detection see section on Width Expansion and Figure 13.. SYSTEM IDT7203 IDT7204 IDT7205 IDT7206 IDT7207 ...

Page 13

... IDT7203/7204/7205/7206/7207/7208 CMOS ASYNCHRONOUS FIFO 2,048 x 9, 4,096 x 9, 8,192 x 9, 16,384 x 9, 32,768 x 9 and 65,536 x 9 DATA DATA OUT DATA IN DATA OUT t t WEF t WLZ t A Figure 17. Read Data Flow-Through Mode t RFF t A DATA VALID OUT Figure 18. Write Data Flow-Through Mode ...

Page 14

... Package NOTES: 1. Industrial temperature range product for 15ns and 25ns speed grades are available as a standard device for IDT7203/7204/7205, and 25ns speed grade only is available as a standard device for IDT7206/7207/7208. All other speed grades are available by special order. 2. The LCC is only available in the military temperature range. ...

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