{"error":{"root_cause":[{"type":"query_shard_exception","reason":"failed to create query: {\n \"regexp\" : {\n \"keyword\" : {\n \"value\" : \".*SN74LVCZ244A,pdf(OCTAL BUFFER/.*\",\n \"flags_value\" : 65535,\n \"max_determinized_states\" : 10000,\n \"boost\" : 1.0\n }\n }\n}","index_uuid":"SON-ziQURzKK3JljPlVlCQ","index":"recommend_keyword_search_v1"}],"type":"search_phase_execution_exception","reason":"all shards failed","phase":"query","grouped":true,"failed_shards":[{"shard":0,"index":"recommend_keyword_search_v1","node":"-Gn7X2aRSFmN2hMyaNEUCA","reason":{"type":"query_shard_exception","reason":"failed to create query: {\n \"regexp\" : {\n \"keyword\" : {\n \"value\" : \".*SN74LVCZ244A,pdf(OCTAL BUFFER/.*\",\n \"flags_value\" : 65535,\n \"max_determinized_states\" : 10000,\n \"boost\" : 1.0\n }\n }\n}","index_uuid":"SON-ziQURzKK3JljPlVlCQ","index":"recommend_keyword_search_v1","caused_by":{"type":"illegal_argument_exception","reason":"expected ')' at position 34"}}}]},"status":400}
SN74HC244和SN74LV244在选型比较中有提到其Data rate分别为56Mbps和220Mbps。 1:(重点)是通过在Datasheet中Switching
2024-12-04 08:31
TI的CD74HC244和SN74HC244有什么区别
2025-01-14 07:11
with 3-State Output Registers and the SN74LVC244A Octal Buffer with 3-State Outputs, each used to expand
2018-09-25 10:20
您好,请问SN74LV245APWR buffer的输入阻抗是不是无穷大?这边一个信号接5V上拉一路输出,一路接到SN74LV245APWR缓冲器,5V会不会被分压了导致不是5V,或者这边有没有什么器件输入内阻无穷
2024-11-15 07:13
SN74ACT244芯片能承受的最大传输速度是多大啊?资料中写到tpd=9.5ns@VCC=5v,是否意味着它能承受100MHZ频率的脉冲呢?希望能给出回复!
2025-02-06 06:43
SN74ACT244芯片能承受的最大传输速度是多大啊?资料中写到tpd=9.5ns@VCC=5v,是否意味着它能承受100MHZ频率的脉冲呢?希望能给出回复!
2019-05-20 14:50
你好 我想5V电平转3.3V的,请问贵司SN74ACT244支持吗?还是只能3.3V转5V
2019-05-29 06:24
怎样去设计总的电子线路图?74HC244是什么?74HC244芯片具备哪些功能?74HC244芯片的电源是什么来提供的?
2021-07-07 06:52
74LCX244的作用
2016-11-07 15:33
在protues中的74HC244怎么连啊,两个组合成8引脚输入输出怎么连????
2014-06-07 23:17