Origins and Early Development 起源与早期发展
1960s: Birth of TTL 1960年代:TTL的诞生
- TTL (Transistor-Transistor Logic) was developed in the early 1960s TTL(晶体管-晶体管逻辑)是在20世纪60年代初开发的
- Texas Instruments introduced the first commercial TTL ICs in 1964 with the 5400 series (military grade)德州仪器于1964年推出了第一款商用TTL IC 5400系列(军用级)
- The commercial 7400 series followed shortly after, establishing the numbering convention that would last decades
随后不久,商用7400系列问世,确立了持续数十年的编号惯例
Evolution of TTL Families TTL家族的演变
Original 74xx Series (Standard TTL)原装74xx系列(标准TTL)
- First widespread digital logic family 第一个广泛使用的数字逻辑家族
- 10ns gate delay, 10mW power consumption per gate 10ns门延迟,每门10mW功耗
- Operating voltage: 5V ±0.25V 工作电压:5V±0.25V
- Noise margin: ~0.4V 噪声容限:~0.4V

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