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.

412 Records
Image Part Manufacturer Description Stock Action
TFF1007HN/N1,115 NXP Semiconductors
IC FREQ GENERATO...
4,350
In-stock
Inquiry
TFF1007HN/N1,118 NXP Semiconductors
IC FREQ GENERATO...
1,570
In-stock
Inquiry
TFF1024HN/N1,135 NXP Semiconductors
IC CLOCK
7,760
In-stock
Inquiry
TFF1024HN/N1,115 NXP Semiconductors
IC CLOCK 2.15MHZ 1C...
1,280
In-stock
Inquiry
TFF11139HN/N1,118 NXP Semiconductors
IC FREQUENCY GEN...
4,070
In-stock
Inquiry
TFF11105HN/N1,118 NXP Semiconductors
IC FREQUENCY GEN...
1,510
In-stock
Inquiry
TFF11084HN/N1,111 NXP Semiconductors
IC FREQUENCY GEN...
1,330
In-stock
Inquiry
TFF11152HN/N1,111 NXP Semiconductors
IC FREQUENCY GEN...
1,120
In-stock
Inquiry
TFF1003HN/N1,115 NXP Semiconductors
IC FREQUENCY GEN...
6,130
In-stock
Inquiry
TFF1003HN/N1,118 NXP Semiconductors
IC FREQUENCY GEN...
7,660
In-stock
Inquiry
MPC940LFAR2 NXP Semiconductors
IC CLOCK DISTRIB...
7,640
In-stock
Inquiry
MC88LV926DWR2 NXP Semiconductors
IC CLK BUF CISC 66...
2,850
In-stock
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MC88916DW70 NXP Semiconductors
IC CLK BUF CISC 70...
7,540
In-stock
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MC88916DW80 NXP Semiconductors
IC CLK BUF CISC 80...
6,510
In-stock
Inquiry
MC88920DW NXP Semiconductors
IC CLK BUF CISC 50...
1,930
In-stock
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MPC942CFA NXP Semiconductors
IC DRVR CLK PLL 2....
3,110
In-stock
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MPC9109FA NXP Semiconductors
IC CLOCK DISTRIB...
1,800
In-stock
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MPC940LFA NXP Semiconductors
IC CLOCK DISTRIB...
5,660
In-stock
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MPC942PFA NXP Semiconductors
IC CLOCK DISTRIB...
7,900
In-stock
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MPC9109AC NXP Semiconductors
IC CLOCK DIST CHI...
7,540
In-stock
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