onsemi MC10H210MEL

Overview

MC10H210MEL from ON Semiconductor is a dual 3-input/3-output MECL 10K-compatible OR gate optimized for low-skew clock distribution, with typical propagation delay of 1.0 ns, power dissipation of 160 mW, and operation over 0°C to +75°C. It drives up to six transmission lines simultaneously and supports wire-ORing of multiple logic levels.

For engineers reviewing the MC10H210MEL datasheet, pinout, applications, or equivalent options, this device is selected for high-speed timing distribution where sub-1.6 ns max propagation delay, −5.2 V VEE rail compatibility, and ECL-level noise margin (150 mV) are critical design requirements.

Technical Context

The MC10H210MEL implements two independent 3-input OR gates, each with three complementary outputs (AOUT/AOUT/AOUT and BOUT/BOUT/BOUT), enabling fanout to multiple loads without external buffering. Its voltage-compensated design maintains consistent switching thresholds across temperature and supply variation.

All inputs accept MECL 10K logic levels (VIH = −1.17 V min at 0°C; VIL = −1.95 V max), and outputs drive 50 Ω terminations to −2.0 V. Propagation delay (tpd), rise time (tr), and fall time (tf) are guaranteed across 0°C to +75°C with transverse airflow >500 lfpm.

Key Specifications

Pinout & Package

MC10H210MEL uses the SOEIAJ-16 (JEDEC MS-012AC) surface-mount package: 16-pin small-outline IC with gull-wing leads, 0.4 mm lead pitch, and 10.0 × 7.5 mm body size.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC100H210FN and SN55ALS108J, the MC10H210MEL delivers optimal balance of speed, ECL compatibility, and commercial-temperature suitability-making it the preferred choice for cost-sensitive, space-constrained clock distribution where −5.2 V infrastructure already exists.

Availability

MC10H210MEL is available at Aetrix Electronics and suitable for high-speed clock distribution, telecom line card timing, ECL logic expansion, and multi-channel synchronization requiring stable component supply and long-term obsolescence management.

Supply support for MC10H210MEL 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 management, analog, sensing, and logic solutions for automotive, industrial, and communications markets.

The MC10H210MEL belongs to the legacy MECL 10H logic family, designed specifically for high-speed, low-skew digital timing and control in telecom infrastructure and test equipment where ECL performance is essential.

FAQ

What is the recommended termination for MC10H210MEL outputs?

The MC10H210MEL outputs must be terminated to −2.0 V through a 50 Ω resistor, as specified in Table 2 of the datasheet. This termination ensures proper VOH/VOL levels, minimizes reflections on transmission lines, and guarantees AC performance including tr/tf ≤2.0 ns. Failure to use −2.0 V termination will result in degraded noise margin and invalid propagation delay.

Does MC10H210MEL support wire-ORing of its outputs?

Yes, the MC10H210MEL supports wire-ORing: its open-emitter outputs allow direct connection of multiple AOUT or BOUT pins to a common node pulled to −2.0 V via 50 Ω. This is explicitly enabled by the device's design for "minimization of gate and package count" and confirmed in the Description section. No external diodes or resistors are needed.

What is the function of separate VCC1 and VCC2 pins on MC10H210MEL?

VCC1 (pins 1, 15) supplies the first OR gate (AIN/AOUT), while VCC2 (pin 16) supplies the second (BIN/BOUT). This separation allows independent power control-e.g., disabling one gate bank during low-power modes-without affecting the other. It also reduces crosstalk between logic sections and supports asymmetric loading scenarios.

Is MC10H210MEL pin-compatible with PDIP-16 versions like MC10H210P?

No, MC10H210MEL (SOEIAJ-16) is not pin-compatible with MC10H210P (PDIP-16). The SOEIAJ package reassigns pin 16 to serve as both VCC2 and BOUT, whereas PDIP uses pin 16 solely for VCC2. Pin counts match, but terminal functions differ-PCB redesign is required for migration between packages.

What thermal management is required for reliable MC10H210MEL operation?

MC10H210MEL requires transverse airflow >500 linear feet per minute (lfpm) during operation, as stated in Note 1 of Table 2. Without forced airflow, junction temperature may exceed safe limits due to 160 mW typical power dissipation. Thermal pads and copper pour under the SOEIAJ-16 body are recommended to enhance heat transfer in still-air environments.