MCP6404-E/SL MCP6404-E/SL 运放IC MCP6404-E/ST MCP6404-H/SL MCP6404-H/ST MCP6404T-E/SL MCP6404T-E/ST MCP6404T-E/STVAO MCP6404T-H/SL MCP6404T-H/SLVAO