Features
- Power up default is all outputs in 1:1 mode
- DIF_(14:0) can be "gear-shifted" from the input CPU Host Clock
- DIF_(18:15) can be "gear-shifted" from the input CPU Host Clock
- Spread spectrum compatible
- Supports output clock frequencies up to 400 MHz
- 8 Selectable SMBus addresses
- SMBus address determines PLL or Bypass mode
- Dedidated Power Down Pin
Description
The IDT9FG1904B-1 follows the Intel DB1900GS Differential Buffer Specification, except for the output groupings. This buffer provides 19 output clocks for CPU Host Bus, PCI-Express, or Fully Buffered DIMM applications. The outputs are configured with two groups. Both groups, DIF_(14:0) and DIF_(18:15) can be equal to or have a gear ratio to the input clock. A differential CPU clock from a CK410B+ main clock generator, such as the IDT932S421, drives the IDT9FG1904B-1. The IDT9FG1904B-1 can provide outputs up to 400MHz.
| Part Number | Status | Samples | Stock | Package | Lead Count (#) | Temp. Grade | Pb (Lead) Free | Carrier Type |
|---|---|---|---|---|---|---|---|---|
| 9FG1904BK-1LF | Obsolete | N/A | In Stock | VFQFPN | 72# | C | Yes | Tray |
| 9FG1904BK-1LFT | Obsolete | N/A | Out of Stock | VFQFPN | 72# | C | Yes | Reel |
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- Product Change NoticePDF 103 KB 7WDXRDKU4E7E-5-55965 Aug 18, 2013
- Product Change NoticePDF 148 KB 7WDXRDKU4E7E-5-55894 Jul 29, 2013
- Product Change NoticePDF 983 KB Jun 25, 2019
- Product Change NoticePDF 583 KB 7WDXRDKU4E7E-5-61343 Dec 20, 2016
- Product Change NoticePDF 596 KB 7WDXRDKU4E7E-5-59884 Jan 28, 2016
- Product Change NoticePDF 544 KB 7WDXRDKU4E7E-5-59710 Nov 13, 2015
- Product Change NoticePDF 43 KB 7WDXRDKU4E7E-5-56945 Feb 16, 2014
- Product Change NoticePDF 140 KB 7WDXRDKU4E7E-5-56466 Dec 03, 2013
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- Product Change NoticePDF 983 KB Jun 25, 2019
- Product Change NoticePDF 583 KB 7WDXRDKU4E7E-5-61343 Dec 20, 2016
- Product Change NoticePDF 596 KB 7WDXRDKU4E7E-5-59884 Jan 28, 2016
- Product Change NoticePDF 544 KB 7WDXRDKU4E7E-5-59710 Nov 13, 2015View More (10)
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