Clock/Timing

Clock/Timing

Clock Timing covers the parts that keep a system synchronized: crystal oscillators, clock generators, jitter cleaners, PLLs, buffers, dividers, and real-time clocks. Some designs only need a simple 25 MHz oscillator to drive an MCU, while others depend on a low-jitter clock tree for Ethernet, SerDes, RF, or data converter timing. These parts show up everywhere, from industrial controllers and network switches to medical devices, telecom line cards, and automotive modules. When buyers source clock timing components, the first thing they usually check is frequency stability and jitter, because a cheaper part with worse phase noise can force a redesign later. Package matters too. A lot of engineers still prefer standard SMD packages like 3225 or 5032 for oscillators, but smaller designs keep pushing toward tighter footprints and lower current draw. Supply is the other big issue. Active clock ICs from major brands can go on allocation without much warning, and older RTC or buffer part numbers sometimes drift into last-time-buy status while production is still running. That is where the trade-off usually shows up: pay more for a branded, traceable part now, or gamble on a gray-market offer and risk inconsistent date codes, poor storage, or outright counterfeit stock. For procurement teams, packaging preference is not a small detail either. Tape-and-reel is fine for production, but many repair and NPI builds still need cut tape or small quantities with proper labels and handling. If you are comparing clock timing parts, it helps to send the exact part number, required quantity, target date code, and whether alternates are acceptable. For current stock, lead time, or a quote, check availability at icxing.com.

Frequently Asked Questions

How do I know if a clock timing part is genuine when buying from the open market?

Ask for photos of the label, reel, and lot or date code before placing the order. For timing ICs and oscillators, inconsistent markings and mixed date codes are common warning signs, especially on older or allocated part numbers. Buying through a distributor that can provide traceability lowers that risk.

What specs matter most when comparing oscillators and clock generators?

Start with frequency, stability over temperature, supply voltage, output type, and jitter. For simple MCU clocks, basic stability may be enough, but Ethernet, FPGA, and RF designs often need much tighter phase noise performance. The right part depends on the system budget, not just the headline frequency.

Why do clock timing lead times vary so much between similar part numbers?

Small differences in package, temperature range, frequency option, or output format can turn a common part into a factory-order item. Standard frequencies and popular SMD packages usually move faster, while custom or legacy options may carry long lead times. If your build is urgent, ask about approved alternates early.

1,328 Records
Image Part Manufacturer Description Stock Action
NB2870ASNR2G onsemi
IC CLOCK SYNTHES...
4,880
In-stock
Inquiry
NB2872ASNR2G onsemi
IC CLOCK SYNTHES...
4,310
In-stock
Inquiry
NB2879ASNR2G onsemi
IC CLOCK SYNTHES...
5,930
In-stock
Inquiry
NB2969ASNR2G onsemi
IC CLOCK SYNTHES...
1,700
In-stock
Inquiry
NB3N508SDTR2G onsemi
IC CLK GEN VCXO M...
3,750
In-stock
Inquiry
FS7145-02G-XTP onsemi
IC CLOCK GEN PLL ...
6,800
In-stock
Inquiry
FS6377-01IG-XTP onsemi
IC CLOCK GEN PLL ...
5,080
In-stock
Inquiry
FS6370-01G-XTP onsemi
IC CLOCK GEN PLL ...
4,000
In-stock
Inquiry
FS6128-04G-XTP onsemi
IC CLOCK GEN PLL ...
3,780
In-stock
Inquiry
NB7V32MMNHTBG onsemi
IC CLOCK DIVIDER...
5,900
In-stock
Inquiry
FS7145-02G-XTD onsemi
IC CLOCK GEN PLL ...
3,150
In-stock
Inquiry
ASM3I2579AF-06OR onsemi
IC FREQ MOD EMI R...
2,730
In-stock
Inquiry
ASM3I2669AF-06OR onsemi
IC FREQ MOD EMI R...
7,240
In-stock
Inquiry
ASM3I2779AF-06OR onsemi
IC FREQ MOD EMI R...
6,020
In-stock
Inquiry
ASM3P1819NF-08SR onsemi
IC FREQ MOD EMI R...
7,380
In-stock
Inquiry
ASM3P2107AF-08SR onsemi
IC FREQ MOD EMI R...
3,840
In-stock
Inquiry
ASM3P2108AF-08SR onsemi
IC FREQ MOD EMI R...
3,060
In-stock
Inquiry
ASM3P2111BG-08SR onsemi
IC FREQ MOD EMI R...
2,790
In-stock
Inquiry
ASM3P2180AF-08SR onsemi
IC FREQ MOD EMI R...
3,760
In-stock
Inquiry
ASM3P2182AF-08SR onsemi
IC FREQ MOD EMI R...
2,430
In-stock
Inquiry