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DS1340U Datasheet(PDF) 2 Page - Maxim Integrated Products |
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DS1340U Datasheet(HTML) 2 Page - Maxim Integrated Products |
2 / 16 page I2C RTC with Trickle Charger 2 Maxim Integrated DS1340 ABSOLUTE MAXIMUM RATINGS 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) 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 or VBACKUP Pins Relative to Ground.............................................-0.3V to +6.0V Voltage Range on SDA, SCL, and FT/OUT Relative to Ground..................................-0.3V to (VCC + 0.3V) Operating Temperature Range ...........................-40°C to +85°C Storage Temperature Range .............................-55°C to +125°C Lead Temperature (soldering, 10s) .................................+260°C Soldering Temperature (reflow) .......................................+260°C PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS DS1340-18 1.71 1.8 5.5 DS1340-3 2.7 3.0 5.5 Supply Voltage (Note 2) VCC DS1340-33 2.97 3.3 5.5 V Input Logic 1 (SDA, SCL) VIH (Note 2) 0.7 x VCC VCC + 0.3 V Input Logic 0 (SDA, SCL) VIL (Note 2) -0.3 +0.3 x VCC V Supply Voltage, Pullup (FT/OUT, SDA, SCL), VCC = 0V VPU (Note 2) 5.5 V DS1340-18 1.3 3.7 DS1340-3 1.3 3.7 Backup Supply Voltage (Note 2) VBACKUP DS1340-33 1.3 5.5 V R1 (Notes 3, 4) 250 R2 (Note 5) 2000 Trickle-Charge Current-Limiting Resistors R3 (Note 6) 4000 DS1340-18 1.51 1.6 1.71 DS1340-3 2.45 2.6 2.7 Power-Fail Voltage (Note 2) VPF DS1340-33 2.70 2.88 2.97 V Input Leakage (SCL, CLK) ILI -1 +1 μA I/O Leakage (SDA, FT/OUT) ILO -1 +1 μA VCC > 2V; VOL = 0.4V 3.0 SDA Logic 0 Output IOLSDA 1.7V < VCC < 2V; VOL = 0.2 x VCC 3.0 mA VCC > 2V; VOL = 0.4V 3.0 1.7V < VCC < 2V; VOL = 0.2 x VCC 3.0 mA FT/OUT Logic 0 Output IOLSQW 1.3V < VCC < 1.7V; VOL = 0.2x VCC 250 μA DS1340-18; VCC = 1.89V 72 150 DS1340-3; VCC = 3.3V 108 200 Active Supply Current (Note 7) ICCA DS1340-33; VCC = 5.5V 192 300 μA DS1340-18; VCC = 1.89V 60 100 DS1340-3; VCC = 3.3V 81 125 Standby Current (Note 8) ICCS DS1340-33; VCC = 5.5V 100 150 μA VBACKUP Leakage Current IBACKUPLKG VBACKUP = 3.7V 100 nA |
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