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onsemi MC10121FN
- Part No.:
- MC10121FN
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- -
- Datasheet:
-
MC10121FN.pdf
- Description:
- IC GATE AND/OR INVERTER
- Quantity:
- Payment:
- Shipping:
Inventory:218
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Product details
Overview
MC10121FN from ON Semiconductor is a MECL 10,000-series 4-wide OR-AND/OR-AND-Invert logic gate providing simultaneous dual-output combinational logic, with 2.3 ns typical propagation delay, 2.5 ns typical rise/fall time (20%–80%), and –5.2 V VEE supply, used in high-speed data routing and digital multiplexing for telecom switching systems.
For engineers reviewing the MC10121FN datasheet, pinout, applications, or equivalent options, this page delivers verified electrical specs, PLCC-20 terminal mapping, functional role in ECL logic trees, and validated alternatives for legacy MECL system upgrades and signal path optimization.
Technical Context
The MC10121FN implements two independent OR-AND gates per package, each accepting four inputs (A1IN–A4IN) and producing complementary outputs (AOUT and AOUT). It operates exclusively with negative power supplies: VEE = –5.2 V, VCC1 = +1.11 V, VCC2 = +2.0 V - configured to meet MECL 10K family voltage thresholds and termination requirements.
All logic transitions are referenced to –2.0 V terminations via 50 Ω resistors, and performance is specified across –30°C to +85°C after thermal equilibrium under ≥500 fpm airflow. Input currents remain below ±0.5 µA (IinL) and ±390 µA (IinH), enabling low-noise cascading in multi-gate arrays.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay | 2.3 ns typ (tpd, 50 Ω load); enables sub-400 MHz clock domain interfacing in pipeline stages |
| Rise/Fall Time | 2.5 ns typ (20%–80%); ensures clean edge integrity for ECL-compatible bus driving |
| Supply Voltages | VCC1 = +1.11 V, VCC2 = +2.0 V, VEE = –5.2 V; defines MECL 10K-compatible biasing and noise margin |
| Output Voltage Levels | VOH = –0.89 V, VOL = –1.85 V (25°C); sets valid logic 1/0 windows for downstream 10K receivers |
| Input Thresholds | VOHA = –0.98 V, VOLA = –1.63 V (25°C); determines switching point stability under temperature drift |
| Power Dissipation | 100 mW typ/pkg (no load); constrains thermal design in dense PLCC-20 layouts |
Pinout & Package
MC10121FN uses a 20-pin Plastic Leaded Chip Carrier (PLCC-20, Case 775–02) with J-lead profile and seating plane orientation. Pin 1 is marked by notch/dimple; leads are numbered counterclockwise starting from top-left corner when notch faces up.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 16 | VCC1 / VCC2 | Positive supply rails: VCC1 powers internal reference circuitry; VCC2 biases output stage |
| 8 | VEE | Negative supply (–5.2 V); common return for all logic and output stages |
| 2, 3 | AOUT / AOUT | Complementary outputs of first OR-AND gate; differential signaling capability |
| 4, 10, 13 | A1IN–A4IN | Four-input OR-AND gate inputs; shared across both logic sections |
| 7, 9, 10, 11, 12, 14, 15 | No Connect / Reserved | Unused pins per datasheet; must be left floating or tied to VEE per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Dual OR-AND logic function | Enables compact implementation of sum-of-products expressions without external inversion |
| MECL 10K family compatibility | Guarantees interoperability with MC10114, MC10116, and other 10K-series building blocks |
| 2.3 ns propagation delay | Supports >400 MHz toggle rates in critical control paths of telecom line cards |
| Low input current (≤±390 µA) | Minimizes loading on preceding gate outputs, preserving fanout in long logic chains |
| Specified over –30°C to +85°C | Validates operation in industrial-grade base station and test equipment environments |
Applications
| Telecom Multiplexer Control | Digital Crosspoint Switching |
|---|---|
Use Scenario: Routing T1/E1 frame alignment signals in legacy carrier-class mux/demux hardware. IC Role / Device Role / Timing Role: OR-AND gate selects active channel enable lines based on framing bit patterns. Use Value: 2.3 ns delay ensures deterministic setup/hold timing relative to 2.048 MHz frame clocks. | Use Scenario: Configuring non-blocking analog/digital crosspoint matrices in protocol analyzers. IC Role / Device Role / Timing Role: Generates address decode logic for 4×4 switch fabric selection. Use Value: Complementary AOUT outputs drive differential control buses with matched skew <100 ps. |
| High-Speed Test Equipment | Legacy Military Avionics Bus Logic |
Use Scenario: Generating synchronized strobes and pattern triggers in automated test systems. IC Role / Device Role / Timing Role: Combines multiple trigger sources into a single gated event pulse. Use Value: Sub-3 ns timing budget supports jitter-critical 100+ MHz sampling clock domains. | Use Scenario: Implementing fault-tolerant voting logic in MIL-STD-1553B bus controllers. IC Role / Device Role / Timing Role: Performs majority logic on redundant status bits before bus arbitration. Use Value: Guaranteed operation at –30°C meets cold-soak environmental qualification requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar OR-AND logic applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC10121P | Same logic function and electrical specs; uses PDIP-16 package instead of PLCC-20 | Requires PCB redesign due to different footprint, lead pitch (0.100″ vs. 0.050″), and thermal profile | Select when through-hole assembly or legacy socket compatibility is required |
| MC10121L | Identical logic and timing; ceramic DIP-16 package with higher thermal resistance and hermetic seal | Suitable for high-reliability aerospace deployments but incompatible with standard PLCC reflow profiles | Choose for extended temperature range or radiation-tolerant designs where PLCC is not certified |
Compared with MC10121P and MC10121L, the MC10121FN offers surface-mount compatibility and superior thermal dissipation in space-constrained telecom modules, while retaining full electrical equivalence - making it the preferred choice for new PLCC-based MECL 10K designs requiring production scalability.
Availability
MC10121FN is available at Aetrix Electronics and suitable for telecom multiplexing, digital crosspoint switching, and high-speed test equipment requiring stable component supply and long-term obsolescence management.
Supply support for MC10121FN includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
ON Semiconductor (now part of onsemi) is a global semiconductor supplier specializing in energy-efficient power, analog, sensor, and logic solutions for automotive, industrial, and communications markets.
The MC10121FN belongs to the legacy MECL 10,000 series - designed specifically for ultra-high-speed digital systems demanding sub-nanosecond timing precision and noise-immune differential signaling in telecom infrastructure and military avionics.
FAQ
What logic function does the MC10121FN implement?
The MC10121FN implements a 4-wide OR-AND/OR-AND-Invert function: two independent OR-AND gates sharing four inputs (A1IN–A4IN), each producing true and complemented outputs (AOUT/AOUT). This structure enables direct realization of sum-of-products Boolean expressions without external inverters, supporting high-speed data routing in MECL 10K systems.
What are the required supply voltages for MC10121FN operation?
The MC10121FN requires three distinct supply connections: VCC1 = +1.11 V (pin 1), VCC2 = +2.0 V (pin 16), and VEE = –5.2 V (pin 8). These voltages establish the MECL 10K reference levels and output swing; deviation beyond ±5% risks incorrect logic thresholds or increased propagation delay in the MC10121FN.
Is MC10121FN pin-compatible with other MC10121 variants like MC10121P?
No, the MC10121FN is not pin-compatible with MC10121P or MC10121L. While all share identical logic functionality and electrical behavior, the MC10121FN uses a 20-pin PLCC package with J-leads, whereas MC10121P (PDIP-16) and MC10121L (CDIP-16) use 16-pin dual-in-line footprints - requiring separate PCB layouts and assembly processes for each variant.
What is the maximum operating temperature range for MC10121FN?
The MC10121FN is fully specified from –30°C to +85°C ambient temperature. Electrical parameters including propagation delay (2.3 ns typ), output voltage levels (VOH/VOL), and input thresholds (VOHA/VOLA) are guaranteed across this range after thermal equilibrium is reached under ≥500 linear fpm airflow - meeting industrial and telecom environmental requirements.
How is MC10121FN terminated for optimal signal integrity?
The MC10121FN outputs must be terminated to –2.0 V through 50 Ω resistors, as specified in the datasheet's switching times test conditions. This termination establishes correct DC bias and impedance matching for MECL 10K differential signaling, minimizing reflections and ensuring the 2.5 ns rise/fall time and 2.3 ns propagation delay of the MC10121FN are maintained in-system.
MC10121FN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- -
- Number of Circuits:
- -
- Number of Inputs:
- -
- Features:
- -
- Voltage - Supply:
- -
- Current - Quiescent (Max):
- -
- Current - Output High, Low:
- -
- Input Logic Level - Low:
- -
- Input Logic Level - High:
- -
- Max Propagation Delay @ V, Max CL:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MC10121FN FAQ
1.How can I place an order for MC10121FN through Aetrix?
Please submit a Request for Quotation (RFQ) for MC10121FN on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MC10121FN reliable?
The price and inventory of MC10121FN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC10121FN is usually 5 days.
3.What payment methods are accepted for MC10121FN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC10121FN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC10121FN?
MC10121FN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC10121FN order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MC10121FN?
For technical support, including MC10121FN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC10121FN requirements.
6.How does Aetrix verify that MC10121FN is sourced from the original manufacturer or authorized distributors?
All MC10121FN products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MC10121FN meets industry standards.
7.What is the process for return or replacement of MC10121FN?
All MC10121FN units undergo pre-shipment inspection (PSI). If there is an issue with MC10121FN, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MC10121FN part is unused and in its original packaging.
Return procedure for MC10121FN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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