Product Overview
Signetics N74S00 Quad 2-Input NAND Gate DIP-14 TTL IC Burroughs 26001487
Condition
Used vintage pull. Visual inspection only. Function testing not performed. Markings legible on body: 26001487, Signetics logo, 7718 date code, and N74S00. Leads show light insertion wear.
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Product Overview
This Signetics N74S00 is a commercial-grade Schottky TTL quad 2-input positive-NAND gate packaged in a standard 14-pin dual in-line package (DIP-14). Manufactured in the 18th week of 1977, this unit carries top marking 26001487, designating it for Burroughs Corporation mainframe and computing hardware. Built for high-speed digital switching with a nominal 5.0V DC supply voltage, it serves as an authentic component for computing restorations, breadboarding, and vintage equipment maintenance.
Key Features
- Schottky TTL logic family (74S series) for high-speed gate switching
- Quad 2-input positive-NAND gate configuration
- Standard DIP-14 through-hole package footprint
- 5.0V DC nominal supply voltage (4.75V to 5.25V operating range)
- Burroughs Corporation internal part marking: 26001487
- Top marking date code 7718 indicating 1977 production
Applications
- Replacing damaged logic ICs during restoration of vintage Burroughs mainframes and computing systems
- Repairing legacy industrial control boards and retro computing motherboards requiring true period-correct Schottky TTL speeds
- Prototyping digital logic circuits on standard solderless breadboards
Frequently Asked Questions
What logic family does the N74S00 belong to?
The N74S00 belongs to the 74S Schottky TTL family, operating at a nominal 5.0V DC logic level.
What do the markings on top of the IC signify?
The top markings include Burroughs part number 26001487, the Signetics logo, production date code 7718 (18th week of 1977), and the part designation N74S00.
Why choose an individually photographed vintage pull instead of a mixed surplus lot?
Purchasing an individual piece avoids buying bulk untested lots just to find a single correct Burroughs-marked part code and vintage date code. You receive the specific piece inspected and photographed here. Standard shipping is an $8 flat rate, orders over $28 ship free, and everything ships from our Idaho warehouse the same or next business day.
Real 1970s Schottky silicon has a character you cannot clone on modern FPGA boards. When an authentic legacy machine needs a gate fixed, only the real thing completes the circuit.
