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
9DB102BFLF Intersil (Renesas Electronics Corporation)
IC BUFFER PCI EXP...
7,560
In-stock
Inquiry
557MI-01LF Intersil (Renesas Electronics Corporation)
PROCESSOR SPECIF...
5,090
In-stock
Inquiry
9DB423BGLF Intersil (Renesas Electronics Corporation)
CLOCK BUFFER 4 OU...
1,780
In-stock
Inquiry
557G-08LF Intersil (Renesas Electronics Corporation)
LOW SKEW CLOCK DR...
6,660
In-stock
Inquiry
9FGL839AKILF Intersil (Renesas Electronics Corporation)
CLOCK SYNTHESIZE...
5,940
In-stock
Inquiry
842S104EGLF Intersil (Renesas Electronics Corporation)
CLOCK SYNTHESIZE...
1,710
In-stock
Inquiry
9DB202CGLF Intersil (Renesas Electronics Corporation)
PLL BASED CLOCK D...
3,770
In-stock
Inquiry
9EPRS488CKLF Intersil (Renesas Electronics Corporation)
MICROPROCESSOR C...
2,290
In-stock
Inquiry
557GI-08LF Intersil (Renesas Electronics Corporation)
IC MUX 2:1 PCI-EXPR...
7,270
In-stock
Inquiry
9DB801BGLF Intersil (Renesas Electronics Corporation)
CLOCK BUFFER 8 OU...
7,520
In-stock
Inquiry
MPC9824AC Intersil (Renesas Electronics Corporation)
CLOCK GENERATORS...
7,790
In-stock
Inquiry
MPC9865VM Intersil (Renesas Electronics Corporation)
CLOCK GENERATOR,...
1,390
In-stock
Inquiry
841S04CGILF Intersil (Renesas Electronics Corporation)
PROCESSOR SPECIF...
5,820
In-stock
Inquiry
8741004AGLF Intersil (Renesas Electronics Corporation)
PLL BASED CLOCK D...
3,320
In-stock
Inquiry
82V3352EDG Intersil (Renesas Electronics Corporation)
TELECOM CIRCUIT,...
2,350
In-stock
Inquiry
9FG108EGILF Intersil (Renesas Electronics Corporation)
IC FREQ TIMING GE...
4,640
In-stock
Inquiry
9FGV0641AKILF Intersil (Renesas Electronics Corporation)
MULTIMKT-TIMING
7,700
In-stock
Inquiry
9DBL411BGILF Intersil (Renesas Electronics Corporation)
IC CLK FANOUT/BUF...
2,320
In-stock
Inquiry
557GI-05ALF Intersil (Renesas Electronics Corporation)
IC CLK SOURCE QUA...
1,510
In-stock
Inquiry
557M-01LF Intersil (Renesas Electronics Corporation)
IC CLK SOURCE PCI...
6,610
In-stock
Inquiry