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.

1,699 Records
Image Part Manufacturer Description Stock Action
LMH2190TMX-38/NOPB Texas Instruments
IC CLK BUFFER 1:4 2...
5,960
In-stock
Inquiry
DS90LV110ATMTX Texas Instruments
IC CLK BUF 1:10 200MH...
2,830
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DS90LV110TMTCX Texas Instruments
IC CLK BUF 1:10 400MH...
4,040
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LMV112SDX Texas Instruments
IC CLK BUFFER 1:1 4...
3,690
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LMV112SD Texas Instruments
IC CLK BUFFER 1:1 4...
5,340
In-stock
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CDCV304PWRG4 Texas Instruments
IC CLK BUFFER 1:4 2...
3,690
In-stock
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V62/09619-01XE Texas Instruments
HI-REL DEVICE
1,160
In-stock
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CDC111FN Texas Instruments
IC CLK BUFFER 1:9 5...
1,350
In-stock
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CDC2351MDBREP Texas Instruments
IC CLK BUFFER 1:10 ...
2,310
In-stock
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CDCE913PWR Texas Instruments
IC PROG PLL VCXO ...
7,350
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CDCE925PWR Texas Instruments
IC 2PLL PROG VCXO...
1,450
In-stock
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LMX2491RTWR Texas Instruments
IC FREQUENCY SYN...
2,720
In-stock
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LMX2485ESQ/NOPB Texas Instruments
IC PLL FREQ SYNTH...
5,990
In-stock
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CDCM6208V2RGZR Texas Instruments
IC CLK GEN 2:8 LOW ...
5,760
In-stock
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LMX2531LQ2570E/NOPB Texas Instruments
IC PLL FREQ SYNTH...
2,340
In-stock
Inquiry
LMX2581SQ/NOPB Texas Instruments
IC FREQ SYNTHESI...
4,700
In-stock
Inquiry
LMX2581SQE/NOPB Texas Instruments
IC RF FREQ SYNTHE...
2,280
In-stock
Inquiry
LMK03806BISQE/NOPB Texas Instruments
IC CLOCK PROG GEN...
1,730
In-stock
Inquiry
CDCM7005RGZT Texas Instruments
IC CLK SYNC/JITTE...
7,130
In-stock
Inquiry
LMK04821NKDT Texas Instruments
IC CLOCK DUAL PLL...
5,640
In-stock
Inquiry