7400-series integrated circuits

The 7400 series is a popular logic family of transistor–transistor logic (TTL) integrated circuits (ICs).

"8400 series", "7400 series", "6400 series", "5400 series", and "74 series" redirect here. For other uses, see 8400, 7400, 6400, 5400, and 74 (disambiguation).
"7402", "7404", and "7486" redirect here. For the highway, see Hawaii Route 7402. For the asteroids, see (7402) 1987 YH, (7404) 1988 AA5, and 7486 Hamabe. For the military unit, see 7486th Air Defense Group.

In 1964, Texas Instruments introduced the SN5400 series of logic chips, in a ceramic semiconductor package. A low-cost plastic package SN7400 series was introduced in 1966 which quickly gained over 50% of the logic chip market, and eventually becoming de facto standardized electronic components. Over the decades, many generations of pin-compatible descendant families evolved to include support for low power CMOS technology, lower supply voltages, and surface mount packages.

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