onsemi MC10197FN

Overview

MC10197FN from ON Semiconductor is a high-speed MECL 10,000-series hex AND gate with strobe capability, operating at VEE = –5.2 V and delivering 2.8 ns typical propagation delay (B→Q), 3.8 ns (A→Q), and 2.5 ns typical rise/fall times (20%–80%). It is used in ECL logic systems requiring precise timing control, such as high-frequency data routing and clocked bus arbitration.

For engineers reviewing the MC10197FN datasheet, pinout, applications, or equivalent options, this page provides verified package mapping (PLCC-20), confirmed logic function (hex AND with dual-input strobe), validated electrical specs (VOH = –0.810 V, VOL = –1.850 V @ +25°C), and real-world use context in ECL-based instrumentation and telecom line cards.

Technical Context

The MC10197FN implements six independent AND gates, each with two inputs (A/B) and one output (Q), plus dedicated strobe inputs per gate pair. All logic operates in negative-voltage ECL (Emitter-Coupled Logic) with VEE = –5.2 V reference and differential output referencing –2.0 V via 50 Ω termination.

It supports true ECL-level signaling with VOH = –0.810 V and VOL = –1.850 V at +25°C, threshold voltages VOHA = –1.105 V and VOLA = –1.475 V, and input currents I_inH = 265 µA / I_inL = 0.3 µA - enabling direct interfacing with other MECL 10,000 family devices without level-shifting.

Key Specifications

Pinout & Package

MC10197FN is housed in a 20-pin Plastic Leaded Chip Carrier (PLCC-20), Case 775–02, with J-lead configuration and seating plane defined per ANSI Y14.5M. Pin numbering follows standard PLCC convention (1 = corner notch, counterclockwise).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar hex AND gate applications.

Compared with MC10197P and MC10197L, the MC10197FN offers surface-mount compatibility and thermal performance suited for high-volume industrial telecom equipment, while retaining full functional and timing equivalence - making it the preferred choice for new SMT designs targeting cost-effective, automated production.

Availability

MC10197FN is available at Aetrix Electronics and suitable for high-speed test instrumentation, telecom line card design, avionics bus arbitration, and precision timing systems requiring stable component supply and long-term obsolescence management.

Supply support for MC10197FN 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, logic, and sensing solutions for automotive, industrial, cloud, and consumer markets.

The MC10197FN belongs to the legacy MECL 10,000 logic family, designed specifically for ultra-high-speed digital systems where nanosecond-level timing determinism and ECL noise immunity are mandatory - including test equipment, telecom infrastructure, and defense electronics.

FAQ

What is the recommended termination for MC10197FN outputs?

The MC10197FN outputs must be terminated to –2.0 V via a 50 Ω resistor, as specified in the switching times test conditions. This termination ensures proper voltage swing (VOH/VOL), minimizes reflections on transmission lines, and maintains the 2.5 ns rise/fall times. Using alternative terminations - such as open-circuit, AC-coupled, or non-50 Ω loads - will degrade timing performance and may cause logic errors in the MC10197FN output stages.

Does MC10197FN support mixed-voltage interfacing with TTL or CMOS devices?

No, the MC10197FN is a dedicated ECL device operating with VEE = –5.2 V and differential output referencing –2.0 V; it lacks built-in level-shifting and cannot directly interface with TTL or CMOS logic families. Interfacing requires external translators such as the MC100ELT20 or discrete resistor networks calibrated to meet VOH/VOL and input threshold requirements of the target family - otherwise, the MC10197FN will not reliably drive or receive signals from TTL/CMOS systems.

What is the maximum operating frequency supported by MC10197FN?

The MC10197FN does not specify a maximum clock frequency in its datasheet, but its 2.8 ns propagation delay and 2.5 ns edge rates support reliable operation up to approximately 350 MHz toggle rate under loaded conditions. System-level maximum frequency depends on PCB layout, termination quality, and fanout; for sustained 250+ MHz operation, the MC10197FN requires controlled-impedance traces and tight power/ground decoupling near VEE and COMMON pins.

Is MC10197FN pin-compatible with MC10197P or MC10197L?

No - MC10197FN uses a 20-pin PLCC package (Case 775), while MC10197P and MC10197L use 16-pin PDIP and CDIP packages respectively. Pin counts, physical dimensions, and pinouts differ fundamentally; there is no mechanical or electrical pin-to-pin compatibility. Migration between these variants requires PCB redesign, though logic function and DC/AC specifications remain identical across all three MC10197FN/MC10197P/MC10197L part numbers.

What is the purpose of the COMMON pin (Pin 15) on MC10197FN?

The COMMON pin (Pin 15) on the MC10197FN serves as a shared connection point for biasing unused inputs or terminating unterminated gates to prevent floating nodes that could induce noise or false switching. It is not a power or ground rail, nor is it internally connected to VEE or VCC. Leaving COMMON unconnected risks erratic behavior; it should be tied to VEE (–5.2 V) or a stable bias voltage matching the input logic threshold when unused inputs are present in the design using MC10197FN.