说明: The 74HC/HCT125 are high-speed Si-gate CMOS devices and are pin compatible with low power Schottky TTL (LSTTL). They are specified in compliance with JEDEC standard no. 7A. The 74HC/HCT125 are four non-inverting buffer/line drivers with 3-state outp <xwellchen> 在 2009-12-29 上传 | 大小:47104 | 下载2次