onsemi MC10H103FNG

Overview

MC10H103FNG from ON Semiconductor is a quad 2-input OR gate in MECL 10H logic family, delivering OR/NOR complementary outputs per gate. It operates with VEE = −5.2 V, achieves 1.0 ns typical propagation delay, dissipates 25 mW/gate, and maintains 150 mV noise margin across 0°C to +75°C - used in high-speed data path routing and ECL-based timing control circuits.

For engineers reviewing the MC10H103FNG datasheet, pinout, applications, or equivalent options, this page provides verified functional identity, PLLC-20 package mapping, AC/DC electrical specs, real-world use scenarios, and two confirmed alternative parts for ECL-compatible logic replacement.

Technical Context

The MC10H103FNG implements four independent 2-input OR gates with complementary NOR outputs per gate, using voltage-compensated MECL 10H differential emitter-coupled transistor topology. Each gate drives into 50 Ω terminated to −2.0 V, ensuring consistent switching under transverse airflow ≥500 lfpm.

It is functionally and pinout-compatible with MECL 10K-series OR gates but delivers 100% faster propagation delay without increased supply current. Input thresholds (VIH/VIL) and output swing (VOH/VOL) are specified across temperature (0°C–75°C) and VEE = −5.2 V ±5%, with guaranteed DC parameters after thermal equilibrium.

Key Specifications

Pinout & Package

MC10H103FNG is housed in a 20-lead Plastic Leaded Chip Carrier (PLLC-20, Case 775), surface-mount package with gull-wing leads, 0.050" (1.27 mm) lead pitch, and exposed thermal pad. Pin 1 marked by notch; pins numbered counterclockwise.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC10H103FN, MC10H103FNG offers identical speed and functionality with RoHS compliance; versus MC100H103FN, it trades extended temperature and marginally faster delay for lower cost and simpler power design in commercial telecom gear.

Availability

MC10H103FNG is available at Aetrix Electronics and suitable for high-speed data multiplexing, telecom line card timing, radar pulse processing, and test equipment signal conditioning requiring stable component supply across long production lifecycles.

Supply support for MC10H103FNG 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 supplier specializing in energy-efficient power management, analog, logic, and sensor solutions for automotive, industrial, and communications markets.

The MC10H103FNG belongs to the MECL 10H logic family, engineered specifically for high-speed digital systems demanding sub-nanosecond timing precision and ECL-level noise immunity in telecom and instrumentation applications.

FAQ

What is the supply voltage requirement for MC10H103FNG?

The MC10H103FNG requires a single negative supply rail: VEE = −5.2 V ±5%. VCC1, VCC2, and VCC3 pins are internal bias nodes and must not be externally connected. The device draws up to 29 mA total supply current across temperature, with 25 mW per gate dissipation at nominal conditions. Proper decoupling near VEE and ground is essential for stable high-speed operation.

Is MC10H103FNG pin-compatible with MECL 10K OR gates?

Yes, the MC10H103FNG is a functional and pinout duplication of standard MECL 10K quad OR gates. Its PLLC-20 footprint matches the physical layout of 10K equivalents, enabling direct replacement without PCB modification. Electrical compatibility includes matching input thresholds, output swing, and termination requirements - verified across 0°C to +75°C per datasheet Table 2 and Figure 2.

What does the 'FNG' suffix indicate in MC10H103FNG?

The 'FNG' suffix identifies the MC10H103FNG as a Pb-free (RoHS-compliant), 20-lead PLLC package variant. 'FN' denotes the PLLC-20 outline (Case 775), and 'G' confirms lead-free finish per J-STD-609. This distinguishes it from MC10H103FN (SnPb) and MC10H103FNR2G (tape-and-reel packaging). All FNG units meet ON Semiconductor's reflow profile qualifications for lead-free assembly.

How is noise margin specified for MC10H103FNG?

The MC10H103FNG guarantees a 150 mV noise margin over its full operating temperature range (0°C to +75°C) and VEE = −5.2 V ±5%. This value is derived from the difference between VOH(min) and VIH(max), and between VIL(min) and VOL(max), ensuring reliable logic discrimination even under worst-case voltage and thermal stress - critical for stable operation in electrically noisy telecom or industrial environments.

Can MC10H103FNG drive 50 Ω loads directly?

Yes, the MC10H103FNG is characterized with outputs terminated through 50 Ω to −2.0 V, as stated in Note 1 of the datasheet. Its VOL and VOH specifications assume this load condition, and rise/fall times (tr/tf = 0.5–1.9 ns) are measured under those constraints. For optimal performance, maintain controlled-impedance traces and avoid unterminated stubs longer than 0.5 inch to preserve signal integrity.