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
MPC940LAC NXP Semiconductors
IC CLOCK DIST CHI...
5,980
In-stock
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MPC942CAC NXP Semiconductors
IC CLOCK DIST CHI...
6,300
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MPC942PAC NXP Semiconductors
IC CLOCK DIST CHI...
5,550
In-stock
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PCK2057DGG,512 NXP Semiconductors
IC CLK BUF DDR 190M...
7,850
In-stock
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PCK2057DGG,518 NXP Semiconductors
IC CLK BUF DDR 190M...
7,610
In-stock
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PCK857DGG,512 NXP Semiconductors
IC CLK BUF DDR 167M...
6,510
In-stock
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PCK857DGG,518 NXP Semiconductors
IC CLK BUF DDR 167M...
1,730
In-stock
Inquiry
PCKV857ADGG,512 NXP Semiconductors
IC CLK BUF DDR 250M...
2,100
In-stock
Inquiry
PCKV857ADGG,518 NXP Semiconductors
IC CLK BUF DDR 250M...
4,350
In-stock
Inquiry
PCKV857ADGV,112 NXP Semiconductors
IC CLK BUF DDR 250M...
7,440
In-stock
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PCKV857ADGV,118 NXP Semiconductors
IC CLK BUF DDR 250M...
2,140
In-stock
Inquiry
PCKV857DGG,512 NXP Semiconductors
IC CLK BUF DDR 190M...
1,380
In-stock
Inquiry
PCKV857DGG,518 NXP Semiconductors
IC CLK BUF DDR 190M...
6,500
In-stock
Inquiry
PCKV857DGV,112 NXP Semiconductors
IC CLK BUF DDR 190M...
6,340
In-stock
Inquiry
PCKV857DGV,118 NXP Semiconductors
IC CLK BUF DDR 190M...
4,240
In-stock
Inquiry
PCKV857EV,151 NXP Semiconductors
IC CLK BUF DDR 190M...
1,150
In-stock
Inquiry
PCKV857EV,118 NXP Semiconductors
IC CLK BUF DDR 190M...
6,070
In-stock
Inquiry
TFF11115HN/N1,111 NXP Semiconductors
IC FREQUENCY GEN...
4,880
In-stock
Inquiry
TFF11096HN/N1,111 NXP Semiconductors
IC FREQUENCY GEN...
5,200
In-stock
Inquiry
TFF11092HN/N1 NXP Semiconductors
IC FREQUENCY GEN...
3,370
In-stock
Inquiry