onsemi MC10H102FNG

Overview

MC10H102FNG from onsemi is a quad 2-input NOR gate in MECL 10H logic family, operating with VEE = −5.2 V, delivering 1.0 ns typical propagation delay, 25 mW per gate power dissipation, and 150 mV improved noise margin across 0°C to +75°C - used in high-speed digital timing and signal routing circuits.

For engineers reviewing the MC10H102FNG datasheet, pinout, applications, or equivalent options, this page provides verified package mapping (PLCC-20), terminal functions, AC/DC electrical specs, thermal limits, and functionally comparable alternatives for ECL-based system design.

Technical Context

The MC10H102FNG implements four independent 2-input NOR gates using emitter-coupled logic architecture, with voltage-compensated inputs and outputs referenced to VEE (−5.2 V) and terminated to −2.0 V via 50 Ω. It maintains full MECL 10K pinout and functional compatibility while achieving 100% faster propagation delay without increased supply current.

All gates operate under guaranteed DC specifications across temperature (0°C to +75°C), with output rise/fall times ≤1.7 ns and input voltage thresholds VIH/VIL defined at −1.17 V/−1.95 V (min) at 25°C. Outputs drive 50 Ω loads into −2.0 V, supporting high-fanout, low-skew interconnect in backplane and clock distribution systems.

Key Specifications

Pinout & Package

MC10H102FNG is housed in a 20-lead plastic-leaded chip carrier (PLCC-20), case 775−02, with gull-wing leads and JEDEC-standard footprint. Pin 1 marked by corner notch; seating plane defined per ANSI Y14.5M.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ECL logic gate applications.

Compared with MC10H102PG and MC100H102FN, the MC10H102FNG delivers optimal balance of speed (1.0 ns), power (25 mW), and surface-mount reliability in PLCC-20 - making it the preferred choice for volume-manufactured telecom and test gear where thermal headroom and board space are constrained.

Availability

MC10H102FNG is available at Aetrix Electronics and suitable for high-speed test equipment, telecom line cards, radar signal processing, and digital oscilloscope trigger path designs requiring stable component supply and long-term obsolescence mitigation.

Supply support for MC10H102FNG 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

onsemi (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient, high-performance analog, logic, and power management solutions for automotive, industrial, and communications markets.

The MC10H102FNG belongs to the MECL 10H logic family - engineered specifically for ultra-fast digital signal routing in ECL-based infrastructure where deterministic timing, noise immunity, and backward compatibility are essential.

FAQ

What is the recommended termination for MC10H102FNG outputs?

The MC10H102FNG outputs must be terminated to −2.0 V via a 50 Ω resistor, as specified in the AC characteristics table and test conditions. This termination ensures proper logic level definition (VOH/VOL), minimizes reflections, and guarantees the 1.0 ns typical propagation delay. Using alternative terminations - such as open-drain or unterminated lines - will violate the device's specified timing and voltage margins.

Does MC10H102FNG require both VCC1 and VCC2 connections?

No. The MC10H102FNG does not use VCC1 or VCC2 internally - these pins are unconnected in the PLCC-20 package. Per the pin assignment diagram and datasheet, only VEE (Pin 13) and ground (Pin 16) are active supply connections. VCC1 and VCC2 should remain unconnected or tied to VEE per layout best practices to avoid parasitic coupling.

How does the noise margin of MC10H102FNG compare to standard MECL 10K parts?

The MC10H102FNG provides a guaranteed 150 mV noise margin over its full operating temperature and voltage range - a documented improvement over baseline MECL 10K devices. This margin is achieved through voltage compensation circuitry and tighter input threshold control, directly enhancing reliability in electrically noisy environments like base station backplanes or ATE racks.

Can MC10H102FNG be used in place of MC10H102P in existing designs?

Yes - the MC10H102FNG is functionally and pinout-compatible with the PDIP-16 MC10H102P for logic behavior, but requires PCB redesign due to differing packages (PLCC-20 vs. PDIP-16). All four NOR gates, input/output thresholds, and timing specs match; however, thermal performance and mounting method differ significantly.

What is the maximum allowable VEE voltage range for MC10H102FNG?

The MC10H102FNG is rated for VEE = −5.2 V ±5%, i.e., −4.94 V to −5.46 V. Absolute maximum ratings allow VEE down to −8.0 V, but operation outside the specified range invalidates all AC/DC parameters including propagation delay, noise margin, and output voltage levels. Stable regulation within ±5% is mandatory for guaranteed performance.