onsemi MC10H102MG

Overview

MC10H102MG from ON Semiconductor is a quad 2-input NOR gate in MECL 10H logic family, operating at −5.2 V VEE supply with 1.0 ns typical propagation delay, −1.95 V to −0.735 V output voltage swing, and 25 mW per gate power dissipation. It delivers high-speed logic decision-making in ECL-compatible timing-critical systems such as telecom line cards and test equipment.

For engineers reviewing the MC10H102MG datasheet, pinout, applications, or equivalent options, key selection considerations include its −5.2 V VEE operation, dual VCC pins (VCC1/VCC2), guaranteed noise margin of 150 mV over temperature, and compatibility with legacy MECL 10K layouts while delivering 100% faster propagation delay.

Technical Context

The MC10H102MG implements four independent 2-input NOR gates using emitter-coupled logic topology with differential pair inputs and current-switching outputs. Each gate provides complementary OR/NOR outputs, enabling flexible logic polarity selection without external inversion.

It operates with a single negative supply (VEE = −5.2 V ±5%) and two separate positive bias rails (VCC1, VCC2) for input and output stage isolation. Input thresholds are referenced to VEE, and outputs are terminated into −2.0 V via 50 Ω, meeting standard ECL interface requirements.

Key Specifications

Pinout & Package

MC10H102MG is packaged in a 16-pin plastic dual-in-line package (PDIP−16, Case 648−08), with VCC1 on Pin 1, VCC2 on Pin 16, and VEE on Pin 8. Pin assignment follows standard MECL 10K layout for drop-in replacement capability.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed NOR logic applications.

Compared with MC100H102MNR2G and SN74AS805N, the MC10H102MG uniquely balances MECL 10K pin compatibility, −5.2 V operation, and 1.0 ns speed-making it the sole option for upgrading legacy 10K systems without board redesign or supply modification.

Availability

MC10H102MG is available at Aetrix Electronics and suitable for telecom infrastructure, high-speed test instrumentation, digital oscilloscopes, and radar signal processing requiring stable component supply and long-term obsolescence management.

Supply support for MC10H102MG 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 is a global semiconductor manufacturer specializing in energy-efficient power, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and consumer markets.

The MC10H102MG belongs to ON Semiconductor's legacy MECL logic product line, engineered specifically for high-speed digital systems demanding nanosecond-level timing precision and ECL interoperability in telecom and instrumentation.

FAQ

What is the recommended termination for MC10H102MG outputs?

The MC10H102MG outputs must be terminated with a 50 Ω resistor to −2.0 V, as specified in the AC characteristics test conditions. This termination ensures proper signal integrity, meets the defined VOL/VOH voltage ranges, and maintains the 1.0 ns propagation delay performance. Failure to use this exact termination will cause output voltage shift, increased skew, and potential logic errors in downstream ECL receivers. The MC10H102MG datasheet explicitly defines this condition for all AC parameter validation.

Does MC10H102MG support operation at temperatures beyond +75°C?

No, the MC10H102MG is rated for an operating temperature range of 0°C to +75°C only. Its electrical specifications-including propagation delay, noise margin, and output voltage-are guaranteed only within this range. Operation above +75°C may result in degraded VOL/VOH margins, increased tpd variation, and potential functional failure. For extended temperature applications, ON Semiconductor offers the MC10H102FNR2G in PLCC-20 package, but that variant retains the same +75°C upper limit.

Can MC10H102MG be used with a single +5 V supply instead of −5.2 V VEE?

No, the MC10H102MG requires a negative supply rail (VEE = −5.2 V ±5%) and cannot operate from a +5 V supply. Its internal emitter-coupled transistors depend on the −5.2 V reference to establish correct bias currents and logic thresholds. Attempting +5 V operation will prevent proper device turn-on, result in no valid output states, and may damage the IC due to reverse-biased junctions. The MC10H102MG is fundamentally incompatible with positive-supply logic families like TTL or CMOS.

Is MC10H102MG pin-compatible with MC10K102?

Yes, the MC10H102MG is a functional and pinout duplication of the MC10K102, as confirmed in the official ON Semiconductor datasheet. Both devices share identical pin assignments (VCC1 on Pin 1, VEE on Pin 8, VCC2 on Pin 16), identical logic diagram structure, and identical terminal labeling. This allows direct PCB-level replacement without layout changes, provided the −5.2 V supply and −2.0 V terminations are implemented per MC10H102MG requirements.

What does the 'MG' suffix indicate in MC10H102MG?

The 'MG' suffix in MC10H102MG denotes a Pb-Free, halogen-free, RoHS-compliant version in the PDIP-16 package (Case 648−08), with green molding compound. It replaces legacy 'P' suffix parts and meets JESD204B-compliant assembly requirements. The 'G' confirms Pb-Free status, and 'M' indicates the specific manufacturing lot and traceability coding per ON Semiconductor's marking standard AND8002/D. Electrical and timing performance is identical to non-'G' variants.