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MAX804SESA Datasheet(PDF) 4 Page - Maxim Integrated Products |
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MAX804SESA Datasheet(HTML) 4 Page - Maxim Integrated Products |
4 / 12 page 3.0V/3.3V Microprocessor Supervisory Circuits 4 _______________________________________________________________________________________ nA -500 2 500 PFI Input Current -25 2 25 MIN TYP MAX ns 100 20 tMR – M — R – Pulse Width V 0.3 x VCC VIH – M — R – Input Threshold 0.7 x VCC ns 60 500 tMD – M — R – to Reset Delay µA 20 60 350 – M — R – Pull-Up Current V 0.7 x VCC VIH 0.3 x VCC VIL WDI Input Threshold 1.12 1.60 2.24 ns 100 20 WDI Pulse Width VIL MAX690_M, MAX802_M, MAX804_M, MAX805_M -1 0.01 1 -10 0.01 10 µA WDI Input Current MAX690/MAX802/MAX804/ MAX805 only sec tWD Watchdog Timeout Period Note 1: VCC supply current, logic input leakage, watchdog functionality (MAX690_/802_/805_/804_), – M — R – functionality (MAX704_/806_), PFI functionality, state of – R — E — S — E — T – (MAX690_/704_/802_/806_), and RESET (MAX804_/805_) tested at VBATT = 3.6V, and VCC = 5.5V. The state of – R — E — S — E — T – or RESET and – P — F — O – is tested at VCC = VCC min. Note 2: Tested at VBATT = 3.6V, VCC = 3.5V and 0V. The battery current will rise to 10µA over a narrow transition window around VCC = 1.9V. Note 3: Leakage current into the battery is tested under the worst-case conditions at VCC = 5.5V, VBATT = 1.8V and at VCC = 1.5V, VBATT= 1.0V. Note 4: Guaranteed by design. Note 5: When VSW > VCC > VBATT, VOUT remains connected to VCC until VCC drops below VBATT. The VCC-to-VBATT comparator has a small 25mV typical hysteresis to prevent oscillation. For VCC < 1.75V (typ), VOUT switches to VBATT regardless of the voltage on VBATT. Note 6: When VBATT > VCC > VSW, VOUT remains connected to VCC until VCC drops below the battery switch threshold (VSW). Note 7: VOUT switches from VBATT to VCC when VCC rises above the reset threshold, independent of VBATT. Switchover back to VCC occurs at the exact voltage that causes – R — E — S — E — T – to go high (on the MAX804_/805_, RESET goes low); however switchover occurs 200ms prior to reset. Note 8: The reset threshold tolerance is wider for VCC rising than for VCC falling to accommodate the 10mV typical hysteresis, which prevents internal oscillation. Note 9: The leakage current into or out of the RESET pin is tested with RESET asserted (RESET output high impedance). MAX690_/MAX704_/MAX805_ V 1.187 1.237 1.287 VPFT PFI Input Threshold 1.212 1.237 1.262 SYMBOL PARAMETER UNITS MAX704_/MAX806_ only MAX704_/MAX806_ only MAX704_/MAX806_ only, – M — R – = 0V, VCC = 3V 0V< VCC < 5.5V MAX704_/MAX806_ only MAX690_M, MAX704_M, MAX80_ _M VCC < 3.6V VPFI falling CONDITIONS MAX690_/MAX802_/MAX804_/MAX805_ only VCC < 3.6V MAX690_C/E, MAX704_C/E, MAX80_ _C/E MAX802_C/E, MAX804_C/E, MAX806_C/E MAX690_C/E, MAX802_C/E, MAX804_C/E, MAX805_C/E MAX690_/MAX802_/MAX804_/MAX805_ only MAX690_M, MAX704_M, MAX80_ _M mV 10 25 nA -500 2 500 PFI Input Current -25 2 25 VPFH PFI Hysteresis, PFI Rising 10 20 MAX690_M, MAX704_M, MAX80_ _M VCC < 3.6V MAX690_C/E, MAX704_C/E, MAX80_ _C/E MAX690_C/E, MAX704_C/E, MAX80_ _C/E ELECTRICAL CHARACTERISTICS (continued) (VCC = 3.17V to 5.5V for the MAX690T/MAX704T/MAX80_T, VCC = 3.02V to 5.5V for the MAX690S/MAX704S/MAX80_S, VCC = 2.72V to 5.5V for the MAX690R/MAX704R/MAX80_R; VBATT = 3.6V; TA = TMIN to TMAX; unless otherwise noted. Typical values are at TA = +25˚C.) |
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