Product Overview
Schottky TTL Quad 2-Input Positive-NAND Gate IC DIP-14
Condition
Used condition. Evaluation: Visual inspection only. Function testing not performed. Through-hole pins are straight and intact. Surface markings are clear: SN74S00N, Texas Instruments logo, 2600-1487, MALAYSIA, and date code 7935A.
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Product Overview
Texas Instruments SN74S00N is a high-speed Schottky TTL integrated circuit containing four independent 2-input positive-NAND gates in a standard 14-pin plastic dual in-line package. This specific component carries secondary Burroughs part marking 2600-1487, reflecting its supply chain provenance for legacy Burroughs computing hardware. Operating from a standard 5.0V supply rail, the 74S series provides faster propagation speeds than standard or LS-series TTL logic, making it essential for period-correct digital repair and legacy system maintenance.
Key Features
- Logic function: Quadruple 2-input positive-NAND gates
- Logic family: High-speed Schottky TTL (74S Series)
- Supply voltage rating: 4.75V to 5.25V (5.0V nominal)
- Package style: 14-pin plastic dual in-line package (PDIP, N suffix)
- Mounting type: Through-hole
- Lead pitch: 2.54 mm (0.1 in) standard DIP spacing
- Operating temperature range: 0°C to 70°C commercial
- Secondary equipment marking: Burroughs part number 2600-1487
- Date code: 7935A (assembled in Malaysia, 1979)
Applications
- Restoring vintage Burroughs computing mainframes, terminals, and peripheral controller boards.
- Replacing failed high-speed gate logic in late-1970s and 1980s industrial test instrumentation.
- Servicing arcade motherboards and early microcomputer systems requiring Schottky-speed TTL timing.
- Bench prototyping logic circuits on breadboards and perfboards where period-accurate silicon is preferred.
Frequently Asked Questions
Is this component interchangeable with standard SN7400N or SN74LS00N chips?
The pinout and logical truth table are identical across the 7400 series, but the 74S Schottky family draws more current and switches significantly faster than standard 74 or low-power Schottky 74LS equivalents. In timing-critical circuits, substituting slower chips can cause clock race conditions, while substituting 74S into an LS circuit increases power dissipation.
What does the 2600-1487 marking indicate?
The 2600-1487 marking is an internal Burroughs Corporation part number printed during production for equipment assembly and inventory tracking. The underlying chip is a genuine Texas Instruments SN74S00N.
Why buy individually counted ICs here instead of a bulk surplus lot?
Bulk surplus lots often bundle unknown revisions, bent leads, or uninspected pulls that require buying dozens of parts just to find one workable chip. Here you get the exact photographed part with confirmed markings and straight leads. Buying more pieces costs less each, and the price-break table on this page shows what each quantity costs. Orders ship for an $8 flat rate, with free shipping on orders over $28, leaving our Idaho warehouse the same or next business day.
Schottky speed from the golden age of mainframe silicon, ready to plug right back into the board and restore a classic machine's heartbeat.
