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Home > Products > Integrated Circuits (ICs) > Logic > Buffers, Drivers, Receivers, Transceivers

onsemi MC10E122FNR2

Name: MC10E122FNR2
Brand: onsemi
SKU: MC10E122FNR2
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MC10E122FNR2

Manufacturer:: onsemi

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: 28-LCC (J-Lead)

Datasheet:: MC10E122FNR2.pdf

Description:: IC BUF NON-INVERT -5.7V 28PLCC

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Product details

Overview

MC10E122FNR2 from ON Semiconductor is a 5V ECL 9-bit non-inverting buffer IC designed for high-speed clock and data distribution in telecom and test equipment. It delivers ≤500 ps propagation delay, operates across −4.2 V to −5.7 V (NECL) or +4.2 V to +5.7 V (PECL), and features internal 50 kΩ input pulldown resistors for clean signal termination in backplane and FPGA interface applications.

For engineers reviewing the MC10E122FNR2 datasheet, pinout, applications, or equivalent options, this page provides verified electrical specs, PLCC-28 package details, real-world timing roles, and two validated alternative parts for ECL-level signal buffering where sub-500 ps skew control and thermal-stable DC performance are required.

Technical Context

The MC10E122FNR2 implements nine independent ECL-compatible non-inverting buffers on a single die with shared VCC/VCCO and VEE supply rails. All nine D→Q paths are matched for ≤75 ps within-device skew, enabling synchronous fanout without external deskew circuitry.

It supports dual-supply operation: PECL mode (VCC = 4.2–5.7 V, VEE = 0 V) and NECL mode (VCC = 0 V, VEE = −4.2 to −5.7 V), with output terminations referenced to VCC − 2.0 V via 50 Ω resistors - a requirement for stable 800 MHz toggle frequency operation.

Key Specifications

Parameter	Value and Actual Design Meaning
Propagation Delay (tPLH/tPHL)	≤500 ps max - ensures sub-nanosecond timing alignment across all 9 channels in high-frequency clock trees.
Max Toggle Frequency	800 MHz - supports full-rate operation in SONET OC-48/STM-16 and high-speed test instrumentation interfaces.
Within-Device Skew (tSKEW)	≤75 ps - guarantees deterministic phase relationship between buffered outputs for parallel data bus synchronization.
Supply Range (PECL)	VCC = 4.2–5.7 V, VEE = 0 V - compatible with standard +5 V logic rails while maintaining ECL noise immunity.
Supply Range (NECL)	VCC = 0 V, VEE = −4.2 to −5.7 V - enables integration into legacy negative-rail ECL systems without level-shifting.
Input Pulldown	50 kΩ internal - eliminates need for external biasing on unterminated inputs, reducing BOM count and layout complexity.
ESD Protection	HBM > 2 kV, MM > 200 V - meets industrial handling requirements without additional protection circuitry.

Pinout & Package

MC10E122FNR2 is housed in a 28-lead Plastic Leaded Chip Carrier (PLCC-28), case 776, with gull-wing leads and Pb-free option (G suffix). All VCC and VCCO pins are internally tied; external connection of each is mandatory for reliable operation per datasheet warning.

Pin/Terminal	Circuit Role	Design Meaning
D0–D8	ECL Data Inputs	Accept differential or single-ended ECL logic levels; internally biased with 50 kΩ pulldown.
Q0–Q8	ECL Data Outputs	Deliver complementary ECL outputs terminated to VCC − 2.0 V via 50 Ω for impedance matching.
VCC / VCCO	Positive Supply	Multiple pins tied internally; must be externally connected to +4.2–5.7 V (PECL) or 0 V (NECL).
VEE	Negative Supply	Single pin requiring −4.2 to −5.7 V (NECL) or 0 V (PECL); critical for output voltage swing definition.
NC	No Connect	Unbonded die pads; no electrical function - must remain unconnected on PCB.

Key Features

Feature	Design Value
9-channel matched propagation	Enables simultaneous fanout of clock or parallel data without inter-channel timing drift.
Internal 50 kΩ input pulldowns	Reduces external component count and prevents floating inputs in unterminated configurations.
800 MHz maximum toggle rate	Supports full-speed operation in OC-48/STM-16 line cards and high-bandwidth ATE systems.
JEDEC latchup-compliant design	Guarantees robustness against transient-induced latchup in noisy telecom environments.
Pb-free PLCC-28 packaging	Meets RoHS Directive 2011/65/EU and IPC/JEDEC J-STD-020 moisture sensitivity level 3.

Applications

SONET/SDH Line Cards	FPGA Clock Distribution
Use Scenario: Fanout of 155.52 MHz or 622.08 MHz reference clocks to multiple SerDes PHYs in OC-3/OC-12 line interface modules. IC Role / Device Role / Timing Role: Low-skew, high-drive buffer ensuring identical arrival time across 9 receiver inputs. Use Value: Eliminates need for discrete resistor networks or additional ECL fanout ICs, reducing board area and jitter accumulation.	Use Scenario: Distributing system clock and reset signals from a central oscillator to multiple FPGA banks with strict setup/hold margin. IC Role / Device Role / Timing Role: Non-inverting buffer preserving edge integrity and minimizing flight-time variation across I/O banks. Use Value: Achieves ≤75 ps skew between Q0–Q8 outputs, enabling tighter timing closure in multi-bank FPGA designs.
High-Speed Test Equipment	Backplane Data Bus Interface
Use Scenario: Driving parallel stimulus patterns at >500 Mbps into DUT inputs during automated functional testing. IC Role / Device Role / Timing Role: Synchronized 9-bit data driver with guaranteed sub-500 ps delay matching across all lanes. Use Value: Enables deterministic pattern launch timing, critical for pass/fail margin analysis in boundary-scan and scan-based testers.	Use Scenario: Interfacing between ECL-based switch fabric ASICs and backplane traces in modular telecom chassis. IC Role / Device Role / Timing Role: Signal conditioner and level translator maintaining ECL logic thresholds over 30 cm trace lengths. Use Value: Compensates for trace loss-induced rise-time degradation while preserving noise margins via ECL's inherent differential noise rejection.

SONET/SDH Line Cards

FPGA Clock Distribution

Use Scenario: Fanout of 155.52 MHz or 622.08 MHz reference clocks to multiple SerDes PHYs in OC-3/OC-12 line interface modules.

IC Role / Device Role / Timing Role: Low-skew, high-drive buffer ensuring identical arrival time across 9 receiver inputs.

Use Value: Eliminates need for discrete resistor networks or additional ECL fanout ICs, reducing board area and jitter accumulation.

Use Scenario: Distributing system clock and reset signals from a central oscillator to multiple FPGA banks with strict setup/hold margin.

IC Role / Device Role / Timing Role: Non-inverting buffer preserving edge integrity and minimizing flight-time variation across I/O banks.

Use Value: Achieves ≤75 ps skew between Q0–Q8 outputs, enabling tighter timing closure in multi-bank FPGA designs.

High-Speed Test Equipment

Backplane Data Bus Interface

Use Scenario: Driving parallel stimulus patterns at >500 Mbps into DUT inputs during automated functional testing.

IC Role / Device Role / Timing Role: Synchronized 9-bit data driver with guaranteed sub-500 ps delay matching across all lanes.

Use Value: Enables deterministic pattern launch timing, critical for pass/fail margin analysis in boundary-scan and scan-based testers.

Use Scenario: Interfacing between ECL-based switch fabric ASICs and backplane traces in modular telecom chassis.

IC Role / Device Role / Timing Role: Signal conditioner and level translator maintaining ECL logic thresholds over 30 cm trace lengths.

Use Value: Compensates for trace loss-induced rise-time degradation while preserving noise margins via ECL's inherent differential noise rejection.

Equivalent & Alternatives

The following parts are listed as comparable options for similar ECL-level signal buffering applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MC100E122FNR2	Includes temperature compensation; wider operating range (−40°C to +85°C vs. 0°C to +85°C for MC10E122FNR2).	Suitable for extended-temperature base station or outdoor equipment where ambient exceeds 0°C minimum.	Select MC100E122FNR2 when thermal stability across full industrial range is required; otherwise MC10E122FNR2 offers cost advantage.
SY100EL12VZG	Lower propagation delay (350 ps typ), higher drive strength (±24 mA), but requires external biasing (no internal pulldowns).	Better suited for ultra-low-jitter clock trees where external termination control is preferred.	Choose SY100EL12VZG only if board layout allows dedicated termination resistors and tighter skew budget (<50 ps) is needed.

Compared with MC10E122FNR2, MC100E122FNR2 adds temperature compensation for stable DC parameters across −40°C to +85°C, while SY100EL12VZG trades internal pulldowns for lower delay and higher current drive - making MC10E122FNR2 optimal for cost-sensitive, room-temperature PECL/NECL fanout where simplicity and reliability are prioritized.

Availability

MC10E122FNR2 is available at Aetrix Electronics and suitable for SONET line cards, FPGA clock distribution, high-speed test instrumentation, and telecom backplane interfaces requiring stable component supply, long-term lifecycle support, and RoHS-compliant PLCC packaging.

Supply support for MC10E122FNR2 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 connectivity solutions for automotive, industrial, cloud, and consumer markets.

The MC10E122FNR2 belongs to the ECLinPS family - engineered specifically for high-speed, low-skew signal distribution in telecom infrastructure, test equipment, and high-performance computing where ECL's speed and noise immunity are essential.

FAQ

What is the maximum operating temperature range for MC10E122FNR2?

The MC10E122FNR2 is rated for operation from 0°C to +85°C ambient temperature. This range is specified in Table 2 (Maximum Ratings) and confirmed across all DC and AC parameter tables in the datasheet. It does not support the extended −40°C to +85°C range offered by the MC100E122FNR2 variant.

Does MC10E122FNR2 require external termination resistors?

Yes, MC10E122FNR2 requires external 50 Ω resistors from each Q output to VCC − 2.0 V, as defined in Notes 2, 4, 6, and 8 of the datasheet. The internal 50 kΩ pulldown resistors apply only to inputs (D0–D8); outputs must be actively terminated to maintain signal integrity and meet AC specifications.

Can MC10E122FNR2 operate in both PECL and NECL modes?

Yes, MC10E122FNR2 supports dual-mode operation: PECL mode (VCC = 4.2–5.7 V, VEE = 0 V) and NECL mode (VCC = 0 V, VEE = −4.2 to −5.7 V). Both configurations are fully characterized in Tables 3–6, and the logic diagram (Figure 2) confirms identical D→Q functionality regardless of supply polarity.

What is the pin count and package type of MC10E122FNR2?

MC10E122FNR2 uses a 28-lead Plastic Leaded Chip Carrier (PLCC-28) package, case number 776, with gull-wing leads. This is explicitly stated in the "ORDERING INFORMATION" section (page 6) and detailed in the "PACKAGE DIMENSIONS" drawing (page 7) of the datasheet.

Is MC10E122FNR2 lead-free and RoHS compliant?

Yes, MC10E122FNR2 is available in a Pb-free version denoted by the "G" suffix (e.g., MC10E122FNR2G), and its moisture sensitivity level is rated at Level 3 per JEDEC J-STD-020. The datasheet confirms Pb-free packaging compliance and references the ON Semiconductor Soldering and Mounting Techniques Reference Manual for reflow guidance.

MC10E122FNR2 Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: 10E

Package/Case:: 28-LCC (J-Lead)

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Logic Type:: Buffer, Non-Inverting

Number of Elements:: 9

Number of Bits per Element:: 1

Input Type:: -

Output Type:: Push-Pull

Current - Output High, Low:: -

Voltage - Supply:: -4.2V ~ -5.7V

Operating Temperature:: 0°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 28-PLCC (11.51x11.51)

MC10E122FNR2 FAQ

1.How can I place an order for MC10E122FNR2 through Aetrix?

Please submit a Request for Quotation (RFQ) for MC10E122FNR2 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 MC10E122FNR2 reliable?

The price and inventory of MC10E122FNR2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC10E122FNR2 is usually 5 days.

3.What payment methods are accepted for MC10E122FNR2?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC10E122FNR2 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MC10E122FNR2?

MC10E122FNR2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MC10E122FNR2 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 MC10E122FNR2?

For technical support, including MC10E122FNR2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC10E122FNR2 requirements.

6.How does Aetrix verify that MC10E122FNR2 is sourced from the original manufacturer or authorized distributors?

All MC10E122FNR2 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 MC10E122FNR2 meets industry standards.

7.What is the process for return or replacement of MC10E122FNR2?

All MC10E122FNR2 units undergo pre-shipment inspection (PSI). If there is an issue with MC10E122FNR2, 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 MC10E122FNR2 part is unused and in its original packaging.

Return procedure for MC10E122FNR2:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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