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
TLC555CPW Texas Instruments
IC OSC SGL TIMER ...
6,250
In-stock
Inquiry
CD4536BPW Texas Instruments
IC OSC PROG TIMER...
2,480
In-stock
Inquiry
TLC552CD Texas Instruments
IC OSC TIMER DUAL...
3,850
In-stock
Inquiry
TLC555TDF2 Texas Instruments
IC OSC SINGLE TIM...
2,760
In-stock
Inquiry
TLC555TDF1 Texas Instruments
IC OSC SINGLE TIM...
3,910
In-stock
Inquiry
LMK61E2-156M25SIAT Texas Instruments
IC OSC CLK 156.25MHZ...
6,990
In-stock
Inquiry
LMK62E0-156M25SIAT Texas Instruments
IC OSC CLOCK 156.25M...
5,320
In-stock
Inquiry
LMK60I2-100M00SIAT Texas Instruments
IC OSC CLOCK 100MH...
4,640
In-stock
Inquiry
LMK60I2-322M26SIAT Texas Instruments
IC OSC CLOCK 322.265...
6,270
In-stock
Inquiry
NE556NS Texas Instruments
IC OSC TIMER DUAL...
5,590
In-stock
Inquiry
TPL5010DDCR Texas Instruments
IC OSC PROG TIMER...
2,750
In-stock
Inquiry
TMS3471C Texas Instruments
CONSUMER CIRCUIT...
3,920
In-stock
Inquiry
NE555DRG4 Texas Instruments
IC OSC SGL TIMER ...
4,000
In-stock
Inquiry
SE555DRG4 Texas Instruments
IC OSC SGL TIMER ...
1,920
In-stock
Inquiry
SA555DRG4 Texas Instruments
IC OSC SGL TIMER ...
3,620
In-stock
Inquiry
NE555PSR Texas Instruments
IC OSC SINGLE TIM...
2,800
In-stock
Inquiry
CD4536BDWR Texas Instruments
IC OSC PROG TIMER...
4,700
In-stock
Inquiry
TLC556CDR Texas Instruments
IC OSC TIMER DUAL...
1,000
In-stock
Inquiry
TPL5100DGSR Texas Instruments
IC OSC PROG TIMER...
6,050
In-stock
Inquiry
TPS3430WDRCR Texas Instruments
IC OSC WATCHDOG 1...
3,170
In-stock
Inquiry