onsemi MC10H332FNG

Overview

MC10H332FNG from ON Semiconductor is a dual MECL 10H-series bus driver/receiver with integrated 4-to-1 output multiplexers per channel, operating at −5.2 V VEE supply, featuring 1.5 ns typical data-to-output propagation delay, −1.95 V to −1.60 V low output voltage range, and −1.17 V to −0.84 V high input voltage threshold across 0°C to +75°C. It serves in high-speed backplane and board-level data routing applications requiring ECL-compatible signal integrity.

For engineers reviewing the MC10H332FNG datasheet, pinout, applications, or equivalent options, key selection criteria include its dual-channel bus interface with shared select logic, OE/RE-controlled tri-state outputs, −2.0 V termination compatibility, and PLLC-20 surface-mount package suitability for dense digital systems.

Technical Context

The MC10H332FNG implements two independent bidirectional bus interfaces, each with four data inputs (X0–X3 / Y0–Y3), two select lines (S0/S1), and separate output enable (OE) and receiver enable (RE) controls. Its multiplexer outputs drive bus lines terminated to −2.0 V via 25 Ω resistors, while receivers accept signals under 50 Ω termination.

All logic thresholds and propagation delays are specified at VEE = −5.2 V ±5%, with guaranteed operation from 0°C to +75°C. The device uses voltage-compensated MECL 10H architecture to maintain noise margin ≥150 mV across temperature and supply variation, ensuring robust timing in mixed-signal environments.

Key Specifications

Pinout & Package

MC10H332FNG 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 (G1 = 7.88–8.38 mm).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual ECL bus interface applications.

Compared with MC10H332P and MC100H332FNG, the MC10H332FNG delivers optimal balance of speed, noise immunity, and manufacturability in surface-mount telecom and computing infrastructure-offering identical functionality to the PDIP version while enabling higher-density layouts and automated assembly.

Availability

MC10H332FNG is available at Aetrix Electronics and suitable for high-speed backplane interfacing, multi-processor arbitration, and telecom line card signal switching requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for MC10H332FNG 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 power management, analog, sensor, and logic solutions for automotive, industrial, and communications markets.

The MC10H332FNG belongs to the MECL 10H logic family, engineered for high-speed, low-noise digital signal routing in telecom infrastructure, test equipment, and real-time computing systems.

FAQ

What is the recommended termination for MC10H332FNG bus outputs?

The MC10H332FNG bus outputs (XBUS and YBUS) must be terminated to −2.0 Vdc through a 25 Ω resistor, as specified in the datasheet's test conditions. This termination ensures proper signal integrity, minimizes reflections, and guarantees VOL/VOH specifications. Receiver inputs require 50 Ω termination to −2.0 Vdc. Deviation from these values may cause timing violations or logic errors in the MC10H332FNG operation.

Does MC10H332FNG support hot-swap or live-insertion?

The MC10H332FNG does not include built-in hot-swap protection circuitry. Its VEE and VCC pins must be powered in sequence per ON Semiconductor's ECL power-up guidelines: VEE should be established before VCC, and all supplies must be stable before applying input signals. While the −2.0 V disable state helps isolate buses during power transitions, system-level protection (e.g., current limiting, sequencing ICs) is required for true hot-swap use of the MC10H332FNG.

Can MC10H332FNG operate with VEE = −4.8 V or −5.5 V?

The MC10H332FNG is characterized and guaranteed only at VEE = −5.2 V ±5% (i.e., −4.94 V to −5.46 V). Operation outside this range is not validated: −4.8 V falls below spec and risks VOH degradation and increased static current; −5.5 V exceeds max rating and may accelerate device wear. For reliable MC10H332FNG performance, maintain VEE within the specified window using a precision −5.2 V regulator.

How does the MC10H332FNG handle bus contention when OE and RE are both active?

When OE (Pin 2) and RE (Pin 12) are both low, the MC10H332FNG enables bidirectional operation: XBUS and YBUS become coupled through internal paths, but no internal short occurs. However, external contention arises if both sides drive opposing logic states onto the shared bus. The MC10H332FNG does not include bus arbitration logic-system design must ensure only one side drives XBUS/YBUS at any time to avoid excessive current draw and potential damage to the MC10H332FNG.

Is MC10H332FNG pin-compatible with MC10H332FN?

Yes, MC10H332FNG is a direct Pb-free replacement for MC10H332FN, sharing identical PLLC-20 package dimensions, pinout, and electrical specifications. The "G" suffix denotes RoHS-compliant lead finish; all timing, voltage, and current parameters remain unchanged. No PCB layout or firmware modifications are needed when upgrading from MC10H332FN to MC10H332FNG.