Bell公司由于整个地采用了离子注入及标准双极工艺,已经研制了一个肖特基集成注入逻辑结构,它超过了现有的n-沟MOS和TTL设计。Bell的Allentown实验室正进行肖特基I~2L随机逻辑阵列的研制,其芯片包括250个门以上,并可在10～30毫微秒TTL范围内工作。这种阵列用低成本I~2L工艺制造,阵列每片具有2～3倍于TTL的工作能力。预计在将来Bell公司的设备和控制电路设计中可整个地代替TTL。 Because of the entire ion implantation and standard bipolar process, Bell has developed a Schottky integrated-injection logic architecture that surpasses the existing n-channel MOS and TTL designs. Bell's Allentown Labs is working on a Schottky I ~ 2L random logic array that includes more than 250 gates and can operate in TTL ranges from 10 to 30 nanoseconds. This array is fabricated in a low-cost I-2L process that has 2 to 3 times the TTL capability per array. It is expected that Bell will replace TTL entirely in the design of its equipment and control circuits in the future.