深度讲解PN 中带有"S"的陶瓷封装振荡器
来源：http://www.hneyq.com 作者：亿金电子 2022年05月21
Many Pletronics older oscillator part numbers had the letter "S" in the part number. For example, SM7745HSV-25.0M. This "S" was used to indicate that this part was specified to meet a logic high level duty cycle of 45% to 55% range. The standard specification was for a 40% to 60% duty cycle range.
| FOX924B-12.000 | Fox 晶振 | FOX924 | TCXO | 12MHz | 3.3V |
| FOX924B-12.000 | Fox 晶振 | FOX924 | TCXO | 12MHz | 3.3V |
| FOX924B-12.000 | Fox 晶振 | FOX924 | TCXO | 12MHz | 3.3V |
| FOX924B-16.000 | Fox 晶振 | FOX924 | TCXO | 16MHz | 3.3V |
| FOX924B-16.000 | Fox 晶振 | FOX924 | TCXO | 16MHz | 3.3V |
| FOX924B-16.000 | Fox 晶振 | FOX924 | TCXO | 16MHz | 3.3V |
| FOX924B-20.000 | Fox 晶振 | FOX924 | TCXO | 20MHz | 3.3V |
| FOX924B-20.000 | Fox 晶振 | FOX924 | TCXO | 20MHz | 3.3V |
| FOX924B-20.000 | Fox 晶振 | FOX924 | TCXO | 20MHz | 3.3V |
| FOX924B-27.000 | Fox 晶振 | FOX924 | TCXO | 27MHz | 3.3V |
| FOX924B-27.000 | Fox 晶振 | FOX924 | TCXO | 27MHz | 3.3V |
| FOX924B-27.000 | Fox 晶振 | FOX924 | TCXO | 27MHz | 3.3V |
| FOX924B-10.000 | Fox 晶振 | FOX924 | TCXO | 10MHz | 3.3V |
| FOX924B-10.000 | Fox 晶振 | FOX924 | TCXO | 10MHz | 3.3V |
| FOX924B-10.000 | Fox 晶振 | FOX924 | TCXO | 10MHz | 3.3V |
| FOX924B-14.7456 | Fox 晶振 | FOX924 | TCXO | 14.7456MHz | 3.3V |
| FOX924B-14.7456 | Fox 晶振 | FOX924 | TCXO | 14.7456MHz | 3.3V |
| FOX924B-14.7456 | Fox 晶振 | FOX924 | TCXO | 14.7456MHz | 3.3V |
| FOX924B-25.000 | Fox 晶振 | FOX924 | TCXO | 25MHz | 3.3V |
| FOX924B-25.000 | Fox 晶振 | FOX924 | TCXO | 25MHz | 3.3V |
As technology improved, that is the integrated circuits used to make the oscillators all actually met a 45% to 55% range without any testing or screening. All ceramic packaged oscillators from Pletronics were in fact meeting this 45% to 55% duty cycle range.
| FOX924B-25.000 | Fox 晶振 | FOX924 | TCXO | 25MHz | 3.3V |
| F135-25 | Fox 晶振 | F135 | XO (Standard) | 25MHz | 3.3V |
| F135-25 | Fox 晶振 | F135 | XO (Standard) | 25MHz | 3.3V |
| F135-25 | Fox 晶振 | F135 | XO (Standard) | 25MHz | 3.3V |
| F335-40 | Fox 晶振 | F335 | XO (Standard) | 40MHz | 3.3V |
| F335-40 | Fox 晶振 | F335 | XO (Standard) | 40MHz | 3.3V |
| F335-40 | Fox 晶振 | F335 | XO (Standard) | 40MHz | 3.3V |
| F316R-20.000 | Fox 晶振 | F310R | XO (Standard) | 20MHz | 1.8V |
| F316R-20.000 | Fox 晶振 | F310R | XO (Standard) | 20MHz | 1.8V |
| F316R-20.000 | Fox 晶振 | F310R | XO (Standard) | 20MHz | 1.8V |
| F316R-24.000 | Fox 晶振 | F310R | XO (Standard) | 24MHz | 1.8V |
| F316R-24.000 | Fox 晶振 | F310R | XO (Standard) | 24MHz | 1.8V |
| F316R-24.000 | Fox 晶振 | F310R | XO (Standard) | 24MHz | 1.8V |
| FOX924B-12.288 | Fox 晶振 | FOX924 | TCXO | 12.288MHz | 3.3V |
| FOX924B-12.288 | Fox 晶振 | FOX924 | TCXO | 12.288MHz | 3.3V |
| FOX924B-12.288 | Fox 晶振 | FOX924 | TCXO | 12.288MHz | 3.3V |
| F32K-327 | Fox 晶振 | F32K | XO (Standard) | 32.768kHz | 3.3V |
| F32K-327 | Fox 晶振 | F32K | XO (Standard) | 32.768kHz | 3.3V |
| F32K-327 | Fox 晶振 | F32K | XO (Standard) | 32.768kHz | 3.3V |
| FOX924B-19.440 | Fox 晶振 | FOX924 | TCXO | 19.44MHz | 3.3V |
| FOX924B-19.440 | Fox 晶振 | FOX924 | TCXO | 19.44MHz | 3.3V |
| FOX924B-19.440 | Fox 晶振 | FOX924 | TCXO | 19.44MHz | 3.3V |
| FOX914B-20.000 | Fox 晶振 | FOX914 | TCXO | 20MHz | 3V |
| FOX914B-20.000 | Fox 晶振 | FOX914 | TCXO | 20MHz | 3V |
| FOX914B-20.000 | Fox 晶振 | FOX914 | TCXO | 20MHz | 3V |
Since the "S" had no official meaning, this was dropped from all part numbers for ceramic parts. Therefore an example: the SM7745HSV-25.0M is the same as the SM7745HV-25.0M and both parts have a 45% to 55% high level duty cycle.
| FOX914B-12.800 | Fox 晶振 | FOX914 | TCXO | 12.8MHz | 3V |
| FOX914B-12.800 | Fox 晶振 | FOX914 | TCXO | 12.8MHz | 3V |
| FOX914B-12.800 | Fox 晶振 | FOX914 | TCXO | 12.8MHz | 3V |
| F535L-25 | Fox 晶振 | F535L | XO (Standard) | 25MHz | 3.3V |
| F535L-25 | Fox 晶振 | F535L | XO (Standard) | 25MHz | 3.3V |
| F535L-25 | Fox 晶振 | F535L | XO (Standard) | 25MHz | 3.3V |
| F535L-33.333 | Fox 晶振 | F535L | XO (Standard) | 33.333MHz | 3.3V |
| F535L-33.333 | Fox 晶振 | F535L | XO (Standard) | 33.333MHz | 3.3V |
| F535L-33.333 | Fox 晶振 | F535L | XO (Standard) | 33.333MHz | 3.3V |
| F235-40 | Fox 晶振 | F235 | XO (Standard) | 40MHz | 3.3V |
| F235-40 | Fox 晶振 | F235 | XO (Standard) | 40MHz | 3.3V |
| F235-40 | Fox 晶振 | F235 | XO (Standard) | 40MHz | 3.3V |
| F235-48 | Fox 晶振 | F235 | XO (Standard) | 48MHz | 3.3V |
| F235-48 | Fox 晶振 | F235 | XO (Standard) | 48MHz | 3.3V |
| F235-48 | Fox 晶振 | F235 | XO (Standard) | 48MHz | 3.3V |
| F535L-24.576 | Fox 晶振 | F535L | XO (Standard) | 24.576MHz | 3.3V |
| F535L-24.576 | Fox 晶振 | F535L | XO (Standard) | 24.576MHz | 3.3V |
| F535L-24.576 | Fox 晶振 | F535L | XO (Standard) | 24.576MHz | 3.3V |
| F535L-24 | Fox 晶振 | F535L | XO (Standard) | 24MHz | 3.3V |
| F535L-24 | Fox 晶振 | F535L | XO (Standard) | 24MHz | 3.3V |
| F535L-24 | Fox 晶振 | F535L | XO (Standard) | 24MHz | 3.3V |
| F535L-50 | Fox 晶振 | F535L | XO (Standard) | 50MHz | 3.3V |
| F535L-50 | Fox 晶振 | F535L | XO (Standard) | 50MHz | 3.3V |
| F535L-50 | Fox 晶振 | F535L | XO (Standard) | 50MHz | 3.3V |
| F535L-27 | Fox 晶振 | F535L | XO (Standard) | 27MHz | 3.3V |
Part numbers with the "S" in them are accepted as a legacy part number but have no special meaning.
| F535L-27 | Fox 晶振 | F535L | XO (Standard) | 27MHz | 3.3V |
| F535L-27 | Fox 晶振 | F535L | XO (Standard) | 27MHz | 3.3V |
| F535L-12 | Fox 晶振 | F535L | XO (Standard) | 12MHz | 3.3V |
| F535L-12 | Fox 晶振 | F535L | XO (Standard) | 12MHz | 3.3V |
| F535L-12 | Fox 晶振 | F535L | XO (Standard) | 12MHz | 3.3V |
| F535L-48 | Fox 晶振 | F535L | XO (Standard) | 48MHz | 3.3V |
| F535L-48 | Fox 晶振 | F535L | XO (Standard) | 48MHz | 3.3V |
| F535L-48 | Fox 晶振 | F535L | XO (Standard) | 48MHz | 3.3V |
| F535L-10 | Fox 晶振 | F535L | XO (Standard) | 10MHz | 3.3V |
| F535L-10 | Fox 晶振 | F535L | XO (Standard) | 10MHz | 3.3V |
| F535L-10 | Fox 晶振 | F535L | XO (Standard) | 10MHz | 3.3V |
| F535L-40 | Fox 晶振 | F535L | XO (Standard) | 40MHz | 3.3V |
| F535L-40 | Fox 晶振 | F535L | XO (Standard) | 40MHz | 3.3V |
| F535L-40 | Fox 晶振 | F535L | XO (Standard) | 40MHz | 3.3V |
| F316R-33.333 | Fox 晶振 | F310R | XO (Standard) | 33.333MHz | 1.8V |
| F316R-33.333 | Fox 晶振 | F310R | XO (Standard) | 33.333MHz | 1.8V |
| F316R-33.333 | Fox 晶振 | F310R | XO (Standard) | 33.333MHz | 1.8V |
| F216R-24.000 | Fox 晶振 | F210R | XO (Standard) | 24MHz | 1.8V |
| F216R-24.000 | Fox 晶振 | F210R | XO (Standard) | 24MHz | 1.8V |
| F216R-24.000 | Fox 晶振 | F210R | XO (Standard) | 24MHz | 1.8V |
许多 Pletronics 较旧的振荡器部件号在部件号中都有字母“S”。 例如，SM7745HSV-25.0M。 该“S”用于表示该器件被指定为满足 45% 至 55% 范围的逻辑高电平占空比。 标准规格适用于 40% 至 60% 的占空比范围。
随着技术的改进，用于制造振荡器的集成电路实际上都达到了 45% 到 55% 的范围，而无需任何测试或筛选。 Pletronics 的所有陶瓷封装振荡器实际上都满足了这个 45% 到 55% 的占空比范围。
| F235-12 | Fox 晶振 | F235 | XO (Standard) | 12MHz | 3.3V |
| F235-12 | Fox 晶振 | F235 | XO (Standard) | 12MHz | 3.3V |
| F235-12 | Fox 晶振 | F235 | XO (Standard) | 12MHz | 3.3V |
| F235-50 | Fox 晶振 | F235 | XO (Standard) | 50MHz | 3.3V |
| F235-50 | Fox 晶振 | F235 | XO (Standard) | 50MHz | 3.3V |
| F235-50 | Fox 晶振 | F235 | XO (Standard) | 50MHz | 3.3V |
| F235-24 | Fox 晶振 | F235 | XO (Standard) | 24MHz | 3.3V |
| F235-24 | Fox 晶振 | F235 | XO (Standard) | 24MHz | 3.3V |
| F235-24 | Fox 晶振 | F235 | XO (Standard) | 24MHz | 3.3V |
| F335-25 | Fox 晶振 | F335 | XO (Standard) | 25MHz | 3.3V |
| F335-25 | Fox 晶振 | F335 | XO (Standard) | 25MHz | 3.3V |
| F335-25 | Fox 晶振 | F335 | XO (Standard) | 25MHz | 3.3V |
| F335-50 | Fox 晶振 | F335 | XO (Standard) | 50MHz | 3.3V |
| F335-50 | Fox 晶振 | F335 | XO (Standard) | 50MHz | 3.3V |
| F335-50 | Fox 晶振 | F335 | XO (Standard) | 50MHz | 3.3V |
| F335-48 | Fox 晶振 | F335 | XO (Standard) | 48MHz | 3.3V |
| F335-48 | Fox 晶振 | F335 | XO (Standard) | 48MHz | 3.3V |
| F335-48 | Fox 晶振 | F335 | XO (Standard) | 48MHz | 3.3V |
| F335-12 | Fox 晶振 | F335 | XO (Standard) | 12MHz | 3.3V |
| F335-12 | Fox 晶振 | F335 | XO (Standard) | 12MHz | 3.3V |
| F335-12 | Fox 晶振 | F335 | XO (Standard) | 12MHz | 3.3V |
| F335-16 | Fox 晶振 | F335 | XO (Standard) | 16MHz | 3.3V |
| F335-16 | Fox 晶振 | F335 | XO (Standard) | 16MHz | 3.3V |
| F335-16 | Fox 晶振 | F335 | XO (Standard) | 16MHz | 3.3V |
| F316R-48.000 | Fox 晶振 | F310R | XO (Standard) | 48MHz | 1.8V |
由于“S”没有官方含义，因此从陶瓷零件的所有零件编号中删除。 因此举个例子：SM7745HSV-25.0M 与 SM7745HV-25.0M 相同，两者都有 45% 到 55% 的高电平占空比。
带有“S”的零件号被接受为旧零件号，但没有特殊含义。
| F316R-48.000 | Fox 晶振 | F310R | XO (Standard) | 48MHz | 1.8V |
| F316R-48.000 | Fox 晶振 | F310R | XO (Standard) | 48MHz | 1.8V |
| F535L-16 | Fox 晶振 | F535L | XO (Standard) | 16MHz | 3.3V |
| F535L-16 | Fox 晶振 | F535L | XO (Standard) | 16MHz | 3.3V |
| F535L-16 | Fox 晶振 | F535L | XO (Standard) | 16MHz | 3.3V |
| F316R-12.288 | Fox 晶振 | F310R | XO (Standard) | 12.288MHz | 1.8V |
| F316R-12.288 | Fox 晶振 | F310R | XO (Standard) | 12.288MHz | 1.8V |
| F316R-12.288 | Fox 晶振 | F310R | XO (Standard) | 12.288MHz | 1.8V |
| F316R-14.31818 | Fox 晶振 | F310R | XO (Standard) | 14.31818MHz | 1.8V |
| F316R-14.31818 | Fox 晶振 | F310R | XO (Standard) | 14.31818MHz | 1.8V |
| F316R-14.31818 | Fox 晶振 | F310R | XO (Standard) | 14.31818MHz | 1.8V |
| F316R-16.000 | Fox 晶振 | F310R | XO (Standard) | 16MHz | 1.8V |
| F316R-16.000 | Fox 晶振 | F310R | XO (Standard) | 16MHz | 1.8V |
| F316R-16.000 | Fox 晶振 | F310R | XO (Standard) | 16MHz | 1.8V |
| F316R-18.432 | Fox 晶振 | F310R | XO (Standard) | 18.432MHz | 1.8V |
| F316R-18.432 | Fox 晶振 | F310R | XO (Standard) | 18.432MHz | 1.8V |
| F316R-18.432 | Fox 晶振 | F310R | XO (Standard) | 18.432MHz | 1.8V |
| F316R-26.000 | Fox 晶振 | F310R | XO (Standard) | 26MHz | 1.8V |
| F316R-26.000 | Fox 晶振 | F310R | XO (Standard) | 26MHz | 1.8V |
| F316R-26.000 | Fox 晶振 | F310R | XO (Standard) | 26MHz | 1.8V |
| F316R-27.000 | Fox 晶振 | F310R | XO (Standard) | 27MHz | 1.8V |
| F316R-27.000 | Fox 晶振 | F310R | XO (Standard) | 27MHz | 1.8V |
| F316R-27.000 | Fox 晶振 | F310R | XO (Standard) | 27MHz | 1.8V |
| F316R-30.000 | Fox 晶振 | F310R | XO (Standard) | 30MHz | 1.8V |
| F316R-30.000 | Fox 晶振 | F310R | XO (Standard) | 30MHz | 1.8V |
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