Features
- Fully integrated PLL
- Fifteen single ended 3.3V LVCMOS/LVTTL outputs
- Two LVCMOS/LVTTL clock inputs for redundant clock applications
- CLK0 and CLK1 accepts the following input levels: LVCMOS/LVTTL
- Output frequency range: 8.33MHz to 125MHz
- VCO range: 200MHz to 500MHz
- External feedback for "zero delay" clock regeneration
- Cycle-to-cycle jitter: ±100ps (typical)
- Output skew: 350ps (maximum)
- 3.3V operating supply
- -40°C to 85°C ambient operating temperature
- Available in lead-free RoHS-compliant package
87974I - Block Diagram
Description
The 87974I is a low skew, low jitter 1-to-15 LVCMOS/ LVTTL Clock Generator/Zero Delay Buffer. The device has a fully integrated PLL and three banks whose divider ratios can be independently controlled, providing output frequency relationships of 1:1, 2:1, 3:1, 3:2, 3:2:1. In addition, the external feedback connection provides for a wide selection of output-to-input frequency ratios. The CLK0 and CLK1 pins allow for redundant clocking on the input and dynamically switching the PLL between two clock sources. Guaranteed low jitter and output skew characteristics make the 87974I ideal for those applications demanding well defined performance and repeatability.
| 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) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 87974CYILF | Obsolete | N/A | In Stock | TQFP | 52# | Tray | 3 | 0 | 160# | Yes | e3 Sn | -40 to 85°C |
| 87974CYILFT | Obsolete | N/A | In Stock | TQFP | 52# | Reel | 3 | 500# | 0 | Yes | e3 Sn | -40 to 85°C |
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- Application NotePDF 187 KB R31AN0065EU0101 Rev.1.01 Nov 14, 2023
- End Of Life NoticePDF 743 KB Jun 11, 2020
- End Of Life NoticePDF 715 KB Jun 03, 2020
- 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
- End Of Life NoticePDF 363 KB 7WDXRDKU4E7E-5-55609 Jun 14, 2013
- End Of Life NoticePDF 209 KB 7WDXRDKU4E7E-5-54984 Feb 28, 2013
- Application NotePDF 1.99 MB 7WDXRDKU4E7E-5-57242 Mar 01, 2022
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- Application NotePDF 187 KB R31AN0065EU0101 Rev.1.01 Nov 14, 2023
- Application NotePDF 1.99 MB 7WDXRDKU4E7E-5-57242 Mar 01, 2022
- Application NotePDF 170 KB 7WDXRDKU4E7E-5-57318 May 13, 2014View More (9)
Application Notes & White Papers (9)
- End Of Life NoticePDF 743 KB Jun 11, 2020
- End Of Life NoticePDF 715 KB Jun 03, 2020
- Product Change NoticePDF 36 KB 7WDXRDKU4E7E-5-56946 Feb 16, 2014
- End Of Life NoticePDF 363 KB 7WDXRDKU4E7E-5-55609 Jun 14, 2013
- End Of Life NoticePDF 209 KB 7WDXRDKU4E7E-5-54984 Feb 28, 2013
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