Features
- 10 ns read/write cycle time
- Read and Write Clocks can be independent
- Dual-Ported zero fall-through time architecture
- Empty and Full Flags signal FIFO status
- Programmable Almost-Empty and Almost-Full flags can be set to any depth
- Programmable Almost-Empty and Almost-Full flags default to Empty+7, and Full-7, respectively
- Output enable puts output data bus in high-impedance state
- Available in 32-pin PLCC and 32-pin TQFP packages
- Industrial temperature range (–40C to +85C) is available
72251 - Block Diagram
Description
The 72251SyncFIFO™ is a 8K x 9 First-In, First-Out memory with clocked read and write controls. This FIFO is useful for a wide variety of data buffering needs such as graphics, local area networks and interprocessor communication. These FIFOs have 9-bit input and output ports. The Read Clock can be tied to the Write Clock for single clock operation or the two clocks can run asynchronous of one another for dual-clock operation.
| Part Number | Status | Samples | Stock | Package | Lead Count (#) | Temp. Grade | Pb (Lead) Free | Carrier Type |
|---|---|---|---|---|---|---|---|---|
| 72251L10J | Obsolete | N/A | Out of Stock | PLCC | 32# | C | No | Tube |
| 72251L10J8 | Obsolete | N/A | Out of Stock | PLCC | 32# | C | No | Reel |
| 72251L10PF | Obsolete | N/A | Out of Stock | TQFP | 32# | C | No | Tray |
| 72251L10PF8 | Obsolete | N/A | Out of Stock | TQFP | 32# | C | No | Reel |
| 72251L10PFG | Obsolete | N/A | Out of Stock | TQFP | 32# | C | Yes | Tray |
| 72251L10PFG8 | Obsolete | N/A | Out of Stock | TQFP | 32# | C | Yes | Reel |
| 72251L15J | Obsolete | N/A | Out of Stock | PLCC | 32# | C | No | Tube |
| 72251L15J8 | Obsolete | N/A | Out of Stock | PLCC | 32# | C | No | Reel |
| 72251L15JGI | Obsolete | N/A | Out of Stock | PLCC | 32# | I | Yes | Tube |
| 72251L15JGI8 | Obsolete | N/A | Out of Stock | PLCC | 32# | I | Yes | Reel |
| 72251L15JI | Obsolete | N/A | Out of Stock | PLCC | 32# | I | No | Tube |
| 72251L15JI8 | Obsolete | N/A | Out of Stock | PLCC | 32# | I | No | Reel |
| 72251L15PF | Obsolete | N/A | In Stock | TQFP | 32# | C | No | Tray |
| 72251L15PF8 | Obsolete | N/A | Out of Stock | TQFP | 32# | C | No | Reel |
| 72251L15PFGI | Obsolete | N/A | Out of Stock | TQFP | 32# | I | Yes | Tray |
| 72251L15PFGI8 | Obsolete | N/A | Out of Stock | TQFP | 32# | I | Yes | Reel |
| 72251L15PFI | Obsolete | N/A | Out of Stock | TQFP | 32# | I | No | Tray |
| 72251L15PFI8 | Obsolete | N/A | Out of Stock | TQFP | 32# | I | No | Reel |
| 72251L25J | Obsolete | N/A | Out of Stock | PLCC | 32# | C | No | Tube |
| 72251L25J8 | Obsolete | N/A | Out of Stock | PLCC | 32# | C | No | Reel |
| 72251L25JI | Obsolete | N/A | Out of Stock | PLCC | 32# | I | No | Tube |
| 72251L25JI8 | Obsolete | N/A | Out of Stock | PLCC | 32# | I | No | Reel |
| 72251L25PF | Obsolete | N/A | Out of Stock | TQFP | 32# | C | No | Tray |
| 72251L25PF8 | Obsolete | N/A | Out of Stock | TQFP | 32# | C | No | Reel |
| 72251L25PFI | Obsolete | N/A | Out of Stock | TQFP | 32# | I | No | Tray |
| 72251L25PFI8 | Obsolete | N/A | Out of Stock | TQFP | 32# | I | No | Reel |
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- End Of Life NoticePDF 938 KB Feb 28, 2022
- End Of Life NoticePDF 909 KB Jan 20, 2022
- Product Change NoticePDF 24 KB 7WDXRDKU4E7E-5-41812 Nov 14, 2012
- Product Change NoticePDF 223 KB 7WDXRDKU4E7E-5-41816 Oct 07, 2006
- Product Change NoticePDF 164 KB 7WDXRDKU4E7E-5-41811 May 11, 2006
- Product Change NoticePDF 38 KB 7WDXRDKU4E7E-5-41815 Aug 04, 2005
- Product Change NoticePDF 16 KB 7WDXRDKU4E7E-5-41818 Jul 22, 2005
- Product Change NoticePDF 47 KB 7WDXRDKU4E7E-5-41814 Apr 29, 2005
- Product Change NoticePDF 80 KB 7WDXRDKU4E7E-5-41813 Dec 14, 2004
- Product Change NoticePDF 150 KB 7WDXRDKU4E7E-5-41738 Mar 20, 2003
- Application NotePDF 159 KB 7WDXRDKU4E7E-5-37177 Jul 31, 2002
- Product Change NoticePDF 150 KB 7WDXRDKU4E7E-5-41678 Jun 17, 2002
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- Application NotePDF 159 KB 7WDXRDKU4E7E-5-37177 Jul 31, 2002
Application Notes & White Papers (2)
- End Of Life NoticePDF 938 KB Feb 28, 2022
- End Of Life NoticePDF 909 KB Jan 20, 2022
- End Of Life NoticePDF 645 KB 7WDXRDKU4E7E-5-62027 Sep 14, 2017
- Product Change NoticePDF 611 KB 7WDXRDKU4E7E-5-60321 Apr 14, 2016
- Product Change NoticePDF 611 KB 7WDXRDKU4E7E-5-59927 Feb 15, 2016View More (22)
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Observer scan only one channel
Hi, I have two devices. One broadcaster and one observer. The problem is that the observer seems scan only one channel (37). If I set the broadcaster to advert on 38 or/and 39, the observer doesn't receive any reports. In the same time, my android table receive ...
Dec 10, 2016
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