MCP6442-E/MS MCP6442-E/MS 运放IC MCP6442-E/SN MCP6442T-E/MNY MCP6442T-E/MS MCP6442T-E/MSVAO MCP6442T-E/SN MCP6444-E/SL MCP6444-E/SL 运放IC MCP6444-E/ST