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DS1338U-18 Datasheet(PDF) 2 Page - Maxim Integrated Products |
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DS1338U-18 Datasheet(HTML) 2 Page - Maxim Integrated Products |
2 / 16 page DS1338 I 2C RTC with 56-Byte NV RAM 2 of 16 ABSOLUTE MAXIMUM RATINGS Voltage Range on Any 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 precautions in the Handling, PC Board Layout, and Assembly Section. 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 the absolute maximum rating conditions for extended periods may affect device reliability. RECOMMENDED DC OPERATING CONDITIONS (VCC = VCC(MIN) to VCC(MAX), TA = -40°C to +85°C, unless otherwise noted. Typical values are at VCC = 3.3V, TA = +25°C, unless otherwise noted.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS DS1338-18 1.71 1.8 1.89 DS1338-3 2.7 3.0 3.3 Supply Voltage VCC DS1338-33 3.0 3.3 5.5 V Logic 1 VIH (Note 2) 0.7 x VCC VCC + 0.3 V Logic 0 VIL (Note 2) -0.3 +0.3 x VCC V Pullup Resistor Voltage (SQW/OUT) VPU (Note 2) 5.5 V DS1338-18 1.51 1.62 1.71 DS1338-3 2.45 2.59 2.70 Power-Fail Voltage VPF DS1338-33 2.70 2.82 2.97 V VBAT Input Voltage VBAT (Note 2) 1.3 3.0 3.7 V DC ELECTRICAL CHARACTERISTICS (VCC = VCC(MIN) to VCC(MAX), TA = -40°C to +85°C, unless otherwise noted. Typical values are at VCC = 3.3V, TA = +25°C, unless otherwise noted.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Input Leakage ILI (Note 3) 1 μA I/O Leakage ILO (Note 4) 1 μA VCC > 2V; VOL = 0.4V 3.0 SDA Logic 0 Output IOLSDA VCC < 2V; VOL = 0.2 x VCC 3.0 mA VCC > 2V; VOL = 0.4V 3.0 1.71V < VCC < 2V; VOL = 0.2 VCC 3.0 mA SQW/OUT Logic 0 Output IOLSQW 1.3V < VCC < 1.71V; VOL = 0.2 VCC 250 μA DS1338-18 75 150 DS1338-3 110 200 VCC ≤ 3.63V 120 200 Active Supply Current (Note 5) ICCA DS1338-33 3.63V < VCC ≤ 5.5V 325 μA DS1338-18 60 100 DS1338-3 80 125 VCC ≤ 3.63V 85 125 Standby Current (Note 6) ICCS DS1338-33 3.63V < VCC ≤ 5.5V 200 μA VBAT Leakage Current (VCC Active) IBATLKG 25 100 nA |
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