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STM809, STM810 STM811, STM812 Reset circuit Features Precision monitoring of 3 V, 3.3 V, and 5 V supply voltages Two output configurations Push-pull RST output (STM809/811) Push-pull RST output (STM810/812) SOT23-3 (WX) 140 ms reset pulse width (min) Low supply current - 6 A (typ) Guaranteed RST/RST assertion down to V = 1.0 V CC Operating temperature: 40 C to 85 C (industrial grade) Lead-free, small SOT23 and SOT143 package SOT143-4 (W1) Table 1. Device summary Active-low reset Active-high reset Manual reset input Package STM809 SOT23-3 STM810 SOT23-3 STM811 SOT143-4 STM812 SOT143-4 January 2010 Doc ID 9873 Rev 5 1/21 www.st.com 1Contents STM809/810/811/812 Contents 1 Description . 5 2 Operation 7 2.1 Reset output 7 2.2 Push-button reset input (STM811/812) . 7 2.3 Negative-going V transients 7 CC 2.4 Valid RST output down to V = 0 V . 8 CC 3 Typical operating characteristics 9 4 Maximum ratings . 12 5 DC and AC parameters 13 6 Package mechanical data 16 7 Part numbering 18 8 Revision history . 20 2/21 Doc ID 9873 Rev 5
