Features
- Packaged in 20-pin SSOP (QSOP)
- Pb (lead) free package, RoHS compliant
- Lower jitter version of ICS650-01
- Operating voltage of 3.3 V or 5 V
- Zero ppm synthesis error in all clocks
- Inexpensive 25 MHz crystal or clock input
- Provides Ethernet and Fast Ethernet clocks
- Provides SCSI clocks
- Provides PCI clocks
- Selectable AC97 audio clock
- Selectable USB clock
- OE pin tri-states the outputs for testing
- Selectable frequencies on three clocks
- Duty cycle of 45/55 for Processor clock and Audio clock
- Advanced, low-power CMOS process
- Industrial temperature range available
Description
The ICS650-21 is a low cost, low-jitter, high-performance clock synthesizer for system peripheral applications. Using analog/digital Phase Locked Loop (PLL) techniques, the device accepts a parallel resonant 25 MHz crystal input to produce up to eight output clocks. The device provides clocks for PCI, SCSI, Fast Ethernet, Ethernet, USB, and AC97. The user can select one of three USB frequencies and also one of two AC97 audio frequencies. The OE pin puts all outputs into a high-impedance state for board level
testing. All frequencies are generated with less than one ppm error, meeting the demands of SCSI and Ethernet clocking.
| Part Number | Status | Samples | Stock | Package | Lead Count (#) | Carrier Type | Moisture Sensitivity Level (MSL) | Qty. per Reel (#) | Qty. per Carrier (#) | Pb (Lead) Free | Pb Free Category | Temp. Range (°C) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 650R-21ILF | Obsolete | N/A | Out of Stock | QSOP | 20# | Tube | 1 | 0 | 55# | Yes | e3 Sn | -40 to 85°C |
| 650R-21ILFT | Obsolete | N/A | Out of Stock | QSOP | 20# | Reel | 1 | 3000# | 0 | Yes | e3 Sn | -40 to 85°C |
| 650R-21LF | Obsolete | N/A | Out of Stock | QSOP | 20# | Tube | 1 | 0 | 55# | Yes | e3 Sn | 0 to 70°C |
| 650R-21LFT | Obsolete | N/A | Out of Stock | QSOP | 20# | Reel | 1 | 3000# | 0 | Yes | e3 Sn | 0 to 70°C |
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- End Of Life NoticePDF 938 KB Feb 28, 2022
- End Of Life NoticePDF 909 KB Jan 20, 2022
- Application NotePDF 170 KB 7WDXRDKU4E7E-5-57318 May 13, 2014
- Application NotePDF 495 KB 7WDXRDKU4E7E-5-57312 May 12, 2014
- Application NotePDF 442 KB 7WDXRDKU4E7E-5-57298 May 08, 2014
- Application NotePDF 115 KB 7WDXRDKU4E7E-5-57294 May 07, 2014
- Application NotePDF 136 KB 7WDXRDKU4E7E-5-57044 Mar 12, 2014
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- Application NotePDF 1.99 MB 7WDXRDKU4E7E-5-57242 Mar 01, 2022
- Application NotePDF 170 KB 7WDXRDKU4E7E-5-57318 May 13, 2014View More (17)
Application Notes & White Papers (17)
- End Of Life NoticePDF 938 KB Feb 28, 2022
- End Of Life NoticePDF 909 KB Jan 20, 2022
- Product Change NoticePDF 39 KB 7WDXRDKU4E7E-5-63188 Aug 29, 2018
- End Of Life NoticePDF 218 KB 7WDXRDKU4E7E-5-62868 Apr 26, 2018
- Product Change NoticePDF 95 KB 7WDXRDKU4E7E-5-59609 Oct 22, 2015View More (8)
Product Notices (PCN, EOL, etc) (8)
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