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74LS85英文资料

更新时间:2019-04-17 11:27:32 大小:245K 上传用户:sun2152查看TA发布的资源 标签:74ls85 下载积分:1分 评价赚积分 (如何评价?) 打赏 收藏 评论(0) 举报

资料介绍

The SN74LS85 is a 4-Bit Magnitude Camparator which comparestwo 4-bit words (A,B), each word having four Parallel Inputs

(Ao-A8, Bo-BB);A3,B3 being the most significant inputs. Operationis not restricted to binary codes, the device will work with any monotonic code. Three Outputs are provided:"A greater thanB

(OA>B),"A less than B A-B0 "A equal to B A=p Three Expander Inputs,h>B, IA<B, IA=B, allow cascading without external gates. For proper compare operation, the Expander Inputs to the least significant position must be connected as follows: IA<B=IA>B=L, IA=B=H. For serial(ripple) expansion, the OA>B, OA<B and OA=B Outputs are connected respectively to the l A>B, IA<B, andIA=B Inputs of the next most significant comparator, as shown in Figure 1. Refer to Applications section of data sheet for high speed method of comparing large words.


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