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
CDCEL949PWR Texas Instruments
IC 4-PLL VCXO CLK ...
4,630
In-stock
Inquiry
LMX2430TM/NOPB Texas Instruments
IC PLL FREQ SYNTH...
2,110
In-stock
Inquiry
CDCE6214RGER Texas Instruments
IC CLOCK BUFFER
5,110
In-stock
Inquiry
CDCM61001RHBR/2801 Texas Instruments
IC CLK GEN 1:1 LOW ...
7,850
In-stock
Inquiry
CDCVF855PW Texas Instruments
IC PLL CLOCK DVR ...
7,120
In-stock
Inquiry
CDCE937QPWRQ1 Texas Instruments
IC 3PLL VCXO CLK S...
6,880
In-stock
Inquiry
CDC906PWR Texas Instruments
IC 2:6PLL SYNTH/MU...
1,250
In-stock
Inquiry
CDCEL937QPWRQ1 Texas Instruments
IC 3-PLL VCXO LVCM...
2,080
In-stock
Inquiry
CDCE949QPWRQ1 Texas Instruments
IC 4-PLL VCXO LVCM...
1,370
In-stock
Inquiry
PLL1706DBQ Texas Instruments
IC MLT-CLK GENERA...
4,570
In-stock
Inquiry
LMX2485QSQX/NOPB Texas Instruments
IC FREQ SYNTH 3GH...
3,610
In-stock
Inquiry
CDCF5801ADBQR Texas Instruments
IC PLL CLOCK MULT...
2,400
In-stock
Inquiry
LMX2485ESQX/NOPB Texas Instruments
IC FREQUENCY SYN...
6,790
In-stock
Inquiry
CDC2509BPWR Texas Instruments
IC 3.3V PLL CLK-DRV...
3,380
In-stock
Inquiry
CDCE62002RHBR Texas Instruments
IC CLK SYNTH/JITT...
1,750
In-stock
Inquiry
CDC2510CPWR Texas Instruments
IC 3.3V PLL CLK-DRV...
1,300
In-stock
Inquiry
CDCVF2510PWR Texas Instruments
IC 3.3V PLL CLK-DRV...
7,050
In-stock
Inquiry
LMX2485QSQ/NOPB Texas Instruments
IC FREQ SYNTH 3GH...
5,250
In-stock
Inquiry
CDC906PW Texas Instruments
IC 2:6PLL SYNTH/MU...
1,990
In-stock
Inquiry
CDCEL949PW Texas Instruments
IC 4-PLL VCXO CLK ...
4,080
In-stock
Inquiry