MCP3421 MCP3421A0T-E/CH MCP3421A0T-E/CH. MCP3421A0T-E/CHVAO MCP3421A0T-E/OT MCP3421A0TEOT MCP3421A1T-E/CH MCP3421A2T-E/CH MCP3421A3T-E/CH MCP3421A4T-E/CH