LMC555CMX/NOPB is a Texas Instruments LMC555 CMOS timer — the CMOS version of the industry-standard 555 — in 8-pin SOIC, tape-and-reel packing (X suffix), NOPB lead-free, 1.5 to 15 V supply, 3 MHz maximum astable frequency. Less than 1 mW typical dissipation at 5 V with far smaller supply-current spikes than the bipolar 555 is the selection point: precision timing that does not corrupt its own supply rail. Selection advice: choose the LMC555 over the bipolar NE555 when the design runs on batteries or low voltage (1.5 V operation is guaranteed), needs megahertz timing (3 MHz versus the bipolar part lower ceiling), or shares a supply with noise-sensitive analog stages. The datasheet states pin-for-pin compatibility with the 555 series, so it drops into existing 555 sockets electrically — but verify timing against the datasheet, since CMOS thresholds and drive levels differ from bipolar. Distributor listings place this ordering code at -40 to +85 °C. Evidence: TI LMC555 datasheet (SNAS558) and distributor listings confirm CMOS 555, 1.5-15 V, 3 MHz, SO-8 and reel packing. Match the full LMC555CMX/NOPB code. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.
LMC555CMX/NOPB is a CMOS timer from Texas Instruments, orderable in the SOIC-8 package. The ordering code fixes the exact configuration you receive — package, grade and packing — so procurement starts with matching this code character-for-character against your BOM, not just the base series name.
When you request a quote, include the full ordering code, the target packing format (reel, tube, tray or cut tape), your quantity and any date-code or lot requirements. We reconfirm manufacturer, suffix, package, date code and traceability against the actual offered lot before any commercial quote is issued, and every RFQ gets a reply within 24 hours.
Exact MPN, manufacturer and suffix
Supplier type, quantity and freshness
Lot, labels, photos and documents
Price, lead time, payment and shipping
Browse existing catalog records — same series first, then the same category and manufacturer. These are not confirmed replacements; compatibility requires engineering review.
The alternatives pages below list LMC555CMX/NOPB as a candidate for another part. A listing is a candidate, not an approval — compatibility requires engineering review.
Every suffix in a manufacturer ordering code identifies one exact orderable device — package, temperature grade, packing format or a revision. LMC555CMX/NOPB names the SOIC-8 configuration; a code that differs by even one suffix character may be a different device. Always quote the complete code exactly as it appears on your BOM.
The package (SOIC-8) is the physical form of the device itself. Packing describes how the devices are delivered — reel, tube, tray or cut tape. The same ordering code can ship in different packing formats depending on the lot, so confirm the required packing format when you submit your RFQ.
Traceability evidence — lot and date-code information, labels and photos — is confirmed per lot at quotation time, because it depends on the actual lot offered. Tell us which documents your receiving inspection requires when you submit the RFQ, and we will confirm what can be provided for the offered lot.
Add LMC555CMX/NOPB to your RFQ with the complete ordering code, the manufacturer (Texas Instruments), your quantity, the target packing format and any date-code requirements. We reply to every RFQ within 24 hours.