Product Overview
Motorola MC351G MECL I 5-Input Complementary OR/NOR Logic Gate
Condition
Unused new old stock (NOS). Evaluation: Visual inspection only. Function testing not performed. Straight gold-plated wire leads with clean gold-plated can header. Markings legible: Motorola emblem and MC351G. Sold each.
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Product Overview
Motorola MC351G emitter-coupled logic integrated circuit in a 10-pin TO-100 hermetic metal can. Part of the foundational MECL I series, this vintage component provides a high-speed 5-input gate network with complementary OR and NOR outputs. Built with an all-gold header and leads, it serves maintenance technicians, computing historians, and circuit restorers working on early high-speed digital architectures.
Key Features
- Logic family: MECL I (MC350 series)
- Logic function: 5-input OR/NOR gate
- Package: 10-pin TO-100 / TO-5 hermetically sealed metal can
- Finish: Gold-plated can header and straight wire leads
- Nominal supply voltage: -5.2 V
- Operating temperature range: 0°C to +75°C
Applications
- Restoring early digital mainframe, minicomputer, and instrumentation hardware relying on MECL I logic.
- Servicing legacy telecommunications and industrial control cards that require original Motorola emitter-coupled logic.
- Prototyping high-speed ECL demonstration circuits and vintage computing test fixtures on the bench.
Frequently Asked Questions
What logic family does the MC351G belong to?
The MC351G belongs to Motorola's MECL I (MC350 series) emitter-coupled logic family, designed for high-speed operation using a nominal -5.2 V supply rail.
What case style is used for this IC?
It is housed in a 10-lead hermetically sealed TO-100 / TO-5 metal can package with gold-plated body and leads.
What outputs are provided on the MC351G?
The gate structure provides simultaneous complementary true OR and inverted NOR outputs driven by the shared 5-input network.
Built when high-speed logic meant gold cans and negative supply rails. For vintage iron that still demands genuine MECL I silicon, this little gate delivers the exact original heartbeat.
