CAT872-30ULGT3 ON Semiconductor

CAT871, CAT872 Dual Input Reset Generator Description CAT871, CAT872 are dual input reset generators designed to restart microprocessor and microcontroller based systems when the watchdog timer or other resetting mechanisms have become disabled or failed. CAT871, CAT872 FUNCTIONAL BLOCK DIAGRAM VDD RESET MR2 RESET Pulse Delay Timer Generator MR1 GND Figure 2. Functional Block Diagram Table 1. PIN FUNCTION DESCRIPTION Pin No. Pin Name Description 1 MR1 Manual reset input 1. CMOS input. 2 MR2 Manual reset input 2. CMOS input. 3 NIC No Internal Connection. A voltage or signal applied to this pin will have no effect on device operation. 4 GND System Ground. 5 RESET Reset Output. Activelow open drain output. 6 VDD Positive Power Supply. Table 2. ABSOLUTE MAXIMUM RATINGS Rating Symbol Value Unit Input Voltage Range V 0.3 to 6 V DD Output Voltage Range V 0.3 to 6 V OUT or (V + 0.3), whichever is lower DD Input Voltage MR2, MR1 V 0.3 to 6 V IN or (V + 0.3), whichever is lower DD Maximum Junction Temperature T 150 C J(max) Output Current RESET I 10 mA OUT Storage Temperature Range T 65 to 150 C STG ESD Capability, Human Body Model (Note 1) ESD 2 kV HBM ESD Capability, Machine Model (Note 1) ESD 200 V MM Lead Temperature Soldering T 260 C SLD Reflow (SMD Styles Only), PbFree Versions (Note 2) Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. 1. This device series incorporates ESD protection and is tested by the following methods: ESD Human Body Model tested per AECQ100002 (EIA/JESD22A114) ESD Machine Model tested per AECQ100003 (EIA/JESD22A115) Latchup Current Maximum Rating: 150 mA per JEDEC standard: JESD78 2. For information, please refer to our Soldering and Mounting Techniques Reference Manual, SOLDERRM/D