Texas Instruments LMK61E
LMK61E variants from Texas Instruments
LMK61E Overview
What changes between part numbers, and what to check before you lock the BOM — Microcontrollers.
LMK61E is a Texas Instruments order-code family — not a single orderable MPN. This page lists 13 variants that share the same core device but differ in suffix fields (package, grade, reel/tube, electrical bin, etc.). Pick the exact full part number; substituting within the family without checking the datasheet often causes assembly or spec mismatches.
50-MHz, LVPECL ±25 ppm, ultra-low jitter, standard differential oscillator 6-QFM -40 to 85 Other listed variants describe: Ultra-Low Jitter Standard Differential Oscillator - 156M25 6-QFM -40 to 85; IC OSC CLOCK 1GHZ 6QFM.
Suffix examples in this family: 0-050M00SIAT, 0-156M25SIAR, 0-156M25SIAT, 07-SIAR, 08-SIAT, 0M-SIAT, 2-100M00SIAT, 2-125M00SIAT. The characters after the base number usually encode package, temperature, or performance grade — compare the variant table column-by-column rather than assuming pin-compatible drops-in.
Example MPNs: LMK61E0-050M00SIAT, LMK61E0-156M25SIAR, LMK61E0-156M25SIAT, LMK61E07-SIAR, LMK61E08-SIAT, LMK61E0M-SIAT.
Key Features
- Lifecycle mix: ActiveConfirm lifecycle on the exact MPN, not just the base number prefix.
- 13 distinct suffix patternsExamples: 0-050M00SIAT, 0-156M25SIAR, 0-156M25SIAT, 07-SIAR, 08-SIAT (+8 more). Decode suffix meaning in the ordering notes under the variant table.
Target Applications
- Microcontrollers — design-in and field replacement
- BOM scrub where only the base prefix is known but suffix is TBD
- Second-source checks when the original MPN is constrained
Ordering Variants
Compare 13 LMK61E part numbers by package, electrical parameters, lifecycle, and availability. Use RFQ for stock and lead-time confirmation.
| Part Number | Description | Manufacturer | Lifecycle | RoHS | Availability | Action |
|---|---|---|---|---|---|---|
| LMK61E0-050M00SIAT | 50-MHz, LVPECL ±25 ppm, ultra-low jitter, standard differential oscillator 6-QFM -40 to 85 | Texas Instruments | Active | Compliant | In Stock | |
| LMK61E0-156M25SIAR | Ultra-Low Jitter Standard Differential Oscillator - 156M25 6-QFM -40 to 85 | Texas Instruments | Active | Compliant | In Stock | |
| LMK61E0-156M25SIAT | Ultra-Low Jitter Standard Differential Oscillator - 156M25 6-QFM -40 to 85 | Texas Instruments | Active | Compliant | In Stock | |
| LMK61E07-SIAR | IC OSC CLOCK 1GHZ 6QFM | Texas Instruments | Active | Compliant | In Stock | |
| LMK61E08-SIAT | IC POWER | Texas Instruments | Active | Compliant | In Stock | |
| LMK61E0M-SIAT | IC OSC CLOCK 200MHZ 8QFM | Texas Instruments | Active | Compliant | In Stock | |
| LMK61E2-100M00SIAT | Oscillator XO 100MHz ±50ppm LVPECL 55% 3.3V 6-Pin QFM SMD T/R | Texas Instruments | Active | Compliant | In Stock | |
| LMK61E2-125M00SIAT | 125-MHz, ±50 ppm, LVPECL ultra-low jitter standard differential oscillator 6-QFM -40 to 85 | Texas Instruments | Active | Compliant | In Stock | |
| LMK61E2-156M25SIAT | Ultra-Low Jitter Standard Differential Oscillator - 156M25 6-QFM -40 to 85 | Texas Instruments | Active | Compliant | In Stock | |
| LMK61E2-312M50SIAT | 312.5-MHz, ±50 ppm, LVPECL ultra-low jitter standard differential oscillator 6-QFM -40 to 85 | Texas Instruments | Active | Compliant | In Stock | |
| LMK61E2-SIAR | IC OSC CLOCK PROG | Texas Instruments | Active | Compliant | In Stock | |
| LMK61E2-SIAT | IC OSC CLOCK PROG 8QFM | Texas Instruments | Active | Compliant | In Stock | |
| LMK61E2BAA-SIAT | IC OSC CLOCK 1GHZ 8QFM | Texas Instruments | Active | Compliant | In Stock |
Ordering Code Differences
How suffixes on LMK61E map to package, grade, and reel options.
LMK61E uses a shared prefix; characters after the prefix encode orderable options. Two lines with the same prefix are not drop-in replacements unless the differing columns match your need.
Suffixes seen here: 0-050M00SIAT, 0-156M25SIAR, 0-156M25SIAT, 07-SIAR, 08-SIAT, 0M-SIAT, 2-100M00SIAT, 2-125M00SIAT, 2-156M25SIAT, 2-312M50SIAT (+3 more).
Full MPN examples: LMK61E0-050M00SIAT, LMK61E0-156M25SIAR, LMK61E0-156M25SIAT, LMK61E07-SIAR, LMK61E08-SIAT.
Tip: photograph or copy the reel label — reel diameter, QTY per reel, and moisture sensitivity level (MSL) are often suffix-driven and won't show in the schematic.
How to Choose the Right LMK61E Microcontrollers
Match the footprint first
Pull the exact package drawing for your MPN — base-number swaps fail most often at the footprint, not the schematic.
Electrical headroom
Compare voltage and current columns in the variant table. For LMK61E, a suffix with lower voltage or current rating will not survive the same circuit without recalculation.
Temp grade letter matters
Commercial (0–70 °C) and industrial (−40–85 °C+) suffixes look similar in the prefix — confirm ambient + self-heating, not just the first page of the datasheet.
Copy the full MPN
Do not BOM only "LMK61E" — include the full suffix (e.g. 0-050M00SIAT, 0-156M25SIAR, 0-156M25SIAT). RFQ with reel/tube preference and required date code.
Technical Specifications
Core parameters for LMK61E product family
Identity
Variant Parameters
Source LMK61E with Octatronics
Request stock confirmation, lead time, date code, and pricing for all 13 ordering variants from Texas Instruments. Our team supports active, EOL, and hard-to-find component sourcing.
- Original manufacturer parts with traceability options
- BOM upload and multi-line RFQ support
- Package, grade, and compliance verification
Frequently Asked Questions
Common technical questions about the LMK61E product family.