EMC1073 / EMC1074 Multiple Channel 1C Temperature Sensors with Selectable Address Datasheet PRODUCT FEATURES General Description Features External Temperature Monitors The EMC1073 and EMC1074 are high accuracy, low 0.25C typ accuracy (20C < T < 110C) DIODE cost, System Management Bus (SMBus) temperature 0.125C resolution sensors with pin selectable SMBus addresses. Supports 2N3904 and AMD diodes Anti-parallel diodes for extra diode support (EMC1074) Each device provides 1 accuracy (max) for external diode temperatures and 2C accuracy (max) for the Internal Temperature Monitor 0.25C typ accuracy (-5C < T < 100C) internal diode temperature. The EMC1073 monitors A 3.3V Supply Voltage three temperature channels (two external and one SMBus 2.0 Compliant internal). The EMC1074 monitors four temperature Programmable SMBus address channels (three external and one internal). Programmable Temperature Limits for ALERT and THERM Applications Available in Small 10-pin MSOP Lead-free RoHS Notebook Computers Compliant Package Desktop Computers Industrial Embedded applications Block Diagram VDD EMC1073 / EMC1074 Conversion Rate Register Switching Current Low Limit Registers DP1 High Limit Registers SMCLK DN1 DP2 / DN3* SMDATA External Temperature Analog Anti-parallel Register(s) ADC THERM Limit Register Mux Diode DN2 / DP3* THERM Hysteresis Register Internal Temperature Register Configuration Register Internal Temp Diode Interupt Masking ALERT Status Registers SMBus Address Decode * DN3 and DP3 are EMC1074 only THERM/ADDR GND SMSC EMC1073 / EMC1074 DATASHEET Revision 1.39 (10-11-10) Digital Mux Limit Comparator Digital Mux SMBus InterfaceMultiple Channel 1C Temperature Sensors with Selectable Address Datasheet Order Number(s): EMC1073-1-AIZL-TR for 10-pin, MSOP Lead-Free RoHS Compliant Package EMC1073-A-AIZL-TR for 10-pin, MSOP Lead-Free RoHS Compliant Package EMC1074-1-AIZL-TR for 10-pin, MSOP Lead-Free RoHS Compliant Package EMC1074-A-AIZL-TR for 10-pin, MSOP Lead-Free RoHS Compliant Package Note: See Table 1.1,Part Selectio for SMBus addressing options. Reel size is 4,000 pieces This product meets the halogen maximum concentration values per IEC61249-2-21 For RoHS compliance and environmental information, please visit www.smsc.com/rohs 80 ARKAY DRIVE, HAUPPAUGE, NY 11788 (631) 435-6000, FAX (631) 273-3123 Copyright 2010 SMSC or its subsidiaries. All rights reserved. Circuit diagrams and other information relating to SMSC products are included as a means of illustrating typical applications. Consequently, complete information sufficient for construction purposes is not necessarily given. Although the information has been checked and is believed to be accurate, no responsibility is assumed for inaccuracies. SMSC reserves the right to make changes to specifications and product descriptions at any time without notice. Contact your local SMSC sales office to obtain the latest specifications before placing your product order. The provision of this information does not convey to the purchaser of the described semiconductor devices any licenses under any patent rights or other intellectual property rights of SMSC or others. All sales are expressly conditional on your agreement to the terms and conditions of the most recently dated version of SMSC s standard Terms of Sale Agreement dated before the date of your order (theTerms of Sale Agreemen). The product may contain design defects or errors known as anomalies which may cause the product s functions to deviate from published specifications. Anomaly sheets are available upon request. SMSC products are not designed, intended, authorized or warranted for use in any life support or other application where product failure could cause or contribute to personal injury or severe property damage. Any and all such uses without prior written approval of an Officer of SMSC and further testing and/or modification will be fully at the risk of the customer. Copies of this document or other SMSC literature, as well as the Terms of Sale Agreement, may be obtained by visiting SMSCs website at