onsemi MC10H188PG

Overview

MC10H188PG from ON Semiconductor is a high-speed MECL 10H™ hex buffer with common enable, operating at VEE = −5.2 V, delivering 1.3 ns typical propagation delay (data-to-output), −1.95 V to −1.60 V low output voltage range, and 180 mW typical power dissipation per package. It functions as a level-shifting, noise-immune signal fanout device in ECL logic systems such as telecom line cards and high-speed test equipment.

For engineers reviewing the MC10H188PG datasheet, pinout, applications, or equivalent options, this part is critical for timing-critical ECL bus buffering where sub-2 ns delay, 150 mV noise margin, and MECL 10K compatibility are required - especially in legacy industrial control backplanes and pulse generator synchronization circuits.

Technical Context

The MC10H188PG implements six independent non-inverting buffers sharing a single active-low enable input (pin 12). When enabled (low), outputs replicate input states with ECL-compatible voltage levels; when disabled (high), all outputs force low. Its design uses voltage-compensated differential pairs to maintain stable switching thresholds across temperature.

All inputs and outputs are compatible with standard MECL 10K logic families, supporting termination to −2.0 V via 50 Ω resistors. The device operates over 0°C to +75°C with guaranteed AC performance (tpd ≤ 2.2 ns max) and DC parameters (e.g., VIH = −1.17 V min at 0°C) validated under transverse airflow ≥500 lfpm.

Key Specifications

Pinout & Package

MC10H188PG is supplied in a 16-pin plastic dual-in-line package (PDIP-16, Case 648), with 0.300-inch body width and 0.100-inch lead pitch. Pin 1 is VCC1, pin 16 is VCC2, pin 8 is VEE (common emitter reference), and pin 12 is the active-low ENABLE input.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar hex buffer with enable applications.

Compared with MC10H188FNG, MC10H188PG offers identical speed and logic behavior in through-hole assembly but lacks extended temp rating; compared with MC10H188P, it delivers full RoHS compliance without sacrificing performance or layout compatibility.

Availability

MC10H188PG is available at Aetrix Electronics and suitable for telecom infrastructure, high-speed test instrumentation, industrial control backplanes, and pulse generator timing distribution requiring stable component supply and long-term obsolescence management.

Supply support for MC10H188PG 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 management, analog, sensor, and logic solutions for automotive, industrial, and communications markets.

The MC10H188PG belongs to the legacy MECL 10H™ logic family, designed specifically for high-speed, low-jitter signal distribution in ECL-based systems where timing predictability and noise resilience are critical.

FAQ

What is the supply voltage configuration required for MC10H188PG?

The MC10H188PG requires a negative supply rail at VEE = −5.2 V ±5%, with VCC1 and VCC2 typically connected to ground or +5 V. It does not operate from positive-only supplies. This configuration establishes the proper ECL logic voltage swing (−0.8 V to −1.9 V), and incorrect VEE biasing will cause invalid output levels or latch-up. Always verify VEE regulation stability before deploying MC10H188PG in production systems.

Is MC10H188PG pin-compatible with MC10K188?

Yes, MC10H188PG is a functional and pinout-duplicate of the MECL 10K™ family part MC10K188, as confirmed in the datasheet's "functional/pinout duplication" statement. All 16 pins match in assignment and electrical behavior, allowing direct replacement without PCB modification. However, MC10H188PG delivers 100% faster propagation delay and improved noise margin while maintaining identical power supply current draw.

What termination is required for MC10H188PG outputs?

MC10H188PG outputs must be terminated with a 50 Ω resistor to −2.0 V, as specified in the datasheet's test conditions and AC parameter definitions. This termination ensures proper signal integrity, minimizes reflections on transmission lines, and guarantees specified rise/fall times (0.7–2.4 ns) and propagation delay. Failure to apply correct termination results in overshoot, ringing, and timing violations in high-speed ECL interconnects.

Does MC10H188PG support operation at −40°C?

No, MC10H188PG is characterized and guaranteed only for 0°C to +75°C operation, per Table 1 (Operating Temperature Range). While some units may function at −40°C, ON Semiconductor does not validate or warrant performance outside this range. For extended temperature applications, consider MC100H188FNG (−40°C to +85°C) instead of MC10H188PG.

What is the meaning of the 'G' suffix in MC10H188PG?

The 'G' suffix in MC10H188PG indicates a Pb-free (RoHS-compliant) finish on the PDIP-16 package leads. This replaces traditional SnPb eutectic plating with matte tin or alternative lead-free metallization, meeting EU RoHS Directive 2011/65/EU and China RoHS requirements. The 'G' variant shares identical electrical, thermal, and mechanical specifications with the SnPb version (MC10H188P), except for solderability profile and moisture sensitivity level.