Key facts
- Brand
- IDT
- Model
- IDT72251
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-05-08
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IDT SyncFIFO CMOS FIFO Series Datasheet (IDT72421, IDT72201, IDT72211, IDT72221, IDT72231, IDT72241, IDT72251)
This document provides a comprehensive overview of the IDT SyncFIFO family of high‑speed, low‑power FIFO memories. It describes the various memory depths (64‑ to 8,192‑word configurations) and the 9‑bit data width, along with the functional block diagram and pin assignments for PLCC and TQFP packages.
Key features include dual‑clock operation, programmable almost‑empty and almost‑full flags, and support for both commercial (‑40 °C to +85 °C) and industrial temperature ranges. Electrical specifications such as supply voltage, leakage currents, and timing parameters are listed for each device variant.
IDT IDT72251 specifications
| Memory organization | 64 × 9, 256 × 9, 512 × 9, 1,024 × 9, 2,048 × 9, 4,096 × 9, 8,192 × 9 |
|---|---|
| Clock cycle frequency | 40 MHz (minimum) |
| Supply voltage (Vee) | 5.0 V typical, 45 V min, 55 V max |
| Terminal voltage (VTERM) | -0.5 V to +7.0 V |
| Input leakage current | -1 µA min, 1 µA max |
All IDT IDT72251 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What temperature ranges are supported?
Both commercial (‑40 °C to +85 °C) and industrial temperature ranges are available.
What are the default values for the programmable flags?
Almost‑Empty defaults to Empty+7 and Almost‑Full defaults to Full‑7.
What are the default offsets for the programmable flags?
The programmable Almost‑Empty and Almost‑Full flags default to Empty+7 and Full‑7, respectively.
How many words can the IDT72421 FIFO store?
The IDT72421 device stores 64 words before the Full flag goes low.