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.

Image Part Manufacturer Description Stock Action
ICS952101CFLF Intersil (Renesas Electronics Corporation)
IC FREQ GENERATO...
1,850
In-stock
Inquiry
ICS952101CFLFT Intersil (Renesas Electronics Corporation)
IC FREQ GENERATO...
6,660
In-stock
Inquiry
ICS952101CFT Intersil (Renesas Electronics Corporation)
IC FREQ GENERATO...
5,740
In-stock
Inquiry
952601EFLF Intersil (Renesas Electronics Corporation)
IC TIMING CTRL HU...
7,710
In-stock
Inquiry
952601EFLFT Intersil (Renesas Electronics Corporation)
IC TIMING CTRL HU...
6,360
In-stock
Inquiry
952601EGLF Intersil (Renesas Electronics Corporation)
IC TIMING CTRL HU...
7,650
In-stock
Inquiry
ICS952620CFLF Intersil (Renesas Electronics Corporation)
IC TIMING CTRL HU...
4,190
In-stock
Inquiry
ICS952620CFLFT Intersil (Renesas Electronics Corporation)
IC TIMING CTRL HU...
4,010
In-stock
Inquiry
952801CFLF Intersil (Renesas Electronics Corporation)
IC TIMING CTRL HU...
6,490
In-stock
Inquiry
952801CFLFT Intersil (Renesas Electronics Corporation)
IC TIMING CTRL HU...
5,420
In-stock
Inquiry
952906AFLFT Intersil (Renesas Electronics Corporation)
IC TIMING CTRL HU...
6,640
In-stock
Inquiry
952906AGLF Intersil (Renesas Electronics Corporation)
IC TIMING CTRL HU...
1,940
In-stock
Inquiry
952906AGLFT Intersil (Renesas Electronics Corporation)
IC TIMING CTRL HU...
2,780
In-stock
Inquiry
952906BGLF Intersil (Renesas Electronics Corporation)
IC TIMING CTRL HU...
7,090
In-stock
Inquiry
952906BGLFT Intersil (Renesas Electronics Corporation)
IC TIMING CTRL HU...
5,100
In-stock
Inquiry
952909AKLF Intersil (Renesas Electronics Corporation)
IC TIMING CTRL HU...
3,240
In-stock
Inquiry
952909AKLFT Intersil (Renesas Electronics Corporation)
IC TIMING CTRL HU...
6,920
In-stock
Inquiry
ICS952909BKLF Intersil (Renesas Electronics Corporation)
IC TIMING CTRL HU...
2,880
In-stock
Inquiry
ICS952909BKLFT Intersil (Renesas Electronics Corporation)
IC TIMING CTRL HU...
6,650
In-stock
Inquiry
ICS952911BF Intersil (Renesas Electronics Corporation)
IC CLOCK CTRL HUB...
2,620
In-stock
Inquiry