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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.

Image Part Manufacturer Description Stock Action
9VRS4420BKLFT Intersil (Renesas Electronics Corporation)
IC CLK GEN MICRO ...
3,250
In-stock
Inquiry
840N202CKI-000LF Intersil (Renesas Electronics Corporation)
IC SYNTH HIGH FRE...
4,040
In-stock
Inquiry
8725BY-01LF Intersil (Renesas Electronics Corporation)
IC BUFFER ZD 1-5 HS...
1,660
In-stock
Inquiry
840N202CKI-000LFT Intersil (Renesas Electronics Corporation)
IC SYNTH HIGH FRE...
2,190
In-stock
Inquiry
8725BY-01LFT Intersil (Renesas Electronics Corporation)
IC BUFFER ZD 1-5 HS...
4,980
In-stock
Inquiry
5P49V5923A503NLGI8 Intersil (Renesas Electronics Corporation)
IC CLOCK GEN 24VFQ...
2,770
In-stock
Inquiry
5P49V5923A504NLGI8 Intersil (Renesas Electronics Corporation)
IC CLOCK GEN 24VFQ...
4,960
In-stock
Inquiry
5P49V5923A505NLGI8 Intersil (Renesas Electronics Corporation)
IC CLOCK GEN 24VFQ...
1,520
In-stock
Inquiry
5P49V5923A506NLGI8 Intersil (Renesas Electronics Corporation)
IC CLOCK GEN 24VFQ...
5,730
In-stock
Inquiry
5P49V5923A507NLGI8 Intersil (Renesas Electronics Corporation)
IC CLOCK GEN 24VFQ...
2,080
In-stock
Inquiry
5P49V5923A508NLGI8 Intersil (Renesas Electronics Corporation)
IC CLOCK GEN 24VFQ...
6,200
In-stock
Inquiry
8735BKI-21LF Intersil (Renesas Electronics Corporation)
IC PLL CLK GEN LV...
2,780
In-stock
Inquiry
8735BKI-21LFT Intersil (Renesas Electronics Corporation)
IC PLL CLK GEN LV...
1,330
In-stock
Inquiry
8735BMI-21LF Intersil (Renesas Electronics Corporation)
IC CLK GEN ZD DIF...
4,280
In-stock
Inquiry
8735BMI-21LFT Intersil (Renesas Electronics Corporation)
IC CLK GEN ZD LVP...
2,410
In-stock
Inquiry
8402AYILF Intersil (Renesas Electronics Corporation)
IC FREQ SYNTHESI...
5,240
In-stock
Inquiry
813N2532CKLF Intersil (Renesas Electronics Corporation)
IC VCXO ATTENUAT...
3,960
In-stock
Inquiry
813N322CKI-02LF Intersil (Renesas Electronics Corporation)
IC VCXO ATTENUAT...
3,100
In-stock
Inquiry
8V19N408ZNLGI Intersil (Renesas Electronics Corporation)
IC ATTENUATOR/CL...
1,300
In-stock
Inquiry
8V19N407Z-24NLGI Intersil (Renesas Electronics Corporation)
IC ATTENUATOR/CL...
2,500
In-stock
Inquiry