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DS12R887 Datasheet(PDF) 2 Page - Dallas Semiconductor |
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DS12R887 Datasheet(HTML) 2 Page - Dallas Semiconductor |
2 / 22 page RTC with Constant-Voltage Trickle Charger 2 _____________________________________________________________________ ABSOLUTE MAXIMUM RATINGS Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Voltage Range on VCC Pin Relative to Ground .....-0.3V to +6.0V Operating Temperature Range ...........................-40°C to +85°C Storage Temperature Range .............................-55°C to +125°C Soldering Temperature .......................................See IPC/JEDEC J-STD-020A Specification Soldering Temperature (leads, 10s) ................................+260°C DC ELECTRICAL CHARACTERISTICS (VCC = VCC(MIN) to VCC(MAX), TA = -40°C to +85°C, unless otherwise noted.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS -33 2.97 3.3 3.63 Supply Voltage (Note 2) VCC -5 4.5 5.0 5.5 V VBACKUP Input Voltage (DS12R885 Only) VBACKUP (Note 2) 2.0 VOUT V Input Logic 1 VIH (Note 2) 2.2 VCC + 0.3 V Input Logic 0 VIL (Note 2) -0.3 +0.8 V -33 0.7 2 VCC Power-Supply Current (Note 3) ICC1 -5 0.8 2 mA -5 0.250 0.5 VCC Standby Current (Note 4) ICCS -33 0.140 0.3 mA Input Leakage IIL -1.0 +1.0 µA I/O Leakage IOL (Note 5) -1.0 +1.0 µA Input Current IMOT (Note 6) -1.0 +500 µA Output Current at 2.4V IOH (Note 2) -1.0 mA Output Current at 0.4V IOL (Note 2) 4.0 mA -33 2.7 2.88 2.97 Power-Fail Voltage (Note 2) VPF -5 4.05 4.33 4.5 V -33 VRT Trip Point VRTTRIP -5 1.3 V Trickle-Charger Current-Limiting Resistor R1 DS12R885 Only 10 k Ω Trickle-Charger Output Voltage VOUT DS12R885 Only 3.05 V |
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