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MAX6391KA44-T Datasheet(PDF) 3 Page - Maxim Integrated Products |
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MAX6391KA44-T Datasheet(HTML) 3 Page - Maxim Integrated Products |
3 / 9 page Dual-Voltage µP Supervisory Circuits with Sequenced Reset Outputs _______________________________________________________________________________________ 3 ELECTRICAL CHARACTERISTICS (continued) (VCC = 1.2V to 5.5V, TA = TMIN to TMAX, unless otherwise specified. Typical values are at VCC = +5V and TA = +25°C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS RESET1 Timeout Period tRP1 140 200 280 ms CCSRT = 1500pF 2.2 3.1 4.0 RESET2 Timeout Period (Note 3) tRP2 CCSRT = VCC 140 200 280 ms VCC ≥ 1.0V, TA = 0°C to +85°C 0.3 ISINK = 50µA, reset asserted VCC ≥ 1.2V, TA = -40°C to +85°C 0.3 ISINK = 1.2mA, reset asserted, VCC ≥ 2.5V 0.3 RESET_ Output Voltage Low VOL ISINK = 3.2mA, reset asserted, VCC ≥ 4.25V 0.4 V Open-Drain RESET Output Leakage Current ILKG VCC ≥ VTH1, VRESET IN2 ≥ VTH2, reset not asserted 1.0 µA VCC ≥ 2.25V, ISOURCE = 500µA, reset not asserted Push-Pull RESET1 Output Voltage High (MAX6392 only) VOH VCC ≥ 4.5V, ISOURCE = 800µA, reset not asserted 0.8 ✿ VCC V VIL 0.8 VIH VCC > 4.0V 2.4 VIL 0.3 ✿ VCC MR Input VIH VCC < 4.0V 0.7 ✿ VCC V MR Minimum Pulse Width 50 µs MR Glitch Rejection 100 ns MR to RESET1 Delay tMR1 10 µs MR to RESET2 Delay tMR2 100 ns tMR Skew tMR1 - tMR2 10 µs MR Pullup Resistance Pullup to VCC 35 47 60 k Ω Reset Pullup Resistance RESET1 to R1 or RESET2 to R2 35 47 60 k Ω Note 1: Overtemperature limits are guaranteed by design and not production tested. Devices tested at +25°C only. Note 2: RESET2 asserts before RESET1 when VCC goes below the threshold for all supply voltage and temperature ranges. Note 3: CSRT must be connected to either VCC (for fixed RESET2 timeout period) or an external capacitor (for user- adjustable RESET2 timeout period). |
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