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DS1340C-18+ Datasheet(PDF) 3 Page - Maxim Integrated Products |
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DS1340C-18+ Datasheet(HTML) 3 Page - Maxim Integrated Products |
3 / 13 page I2C RTC with Trickle Charger _____________________________________________________________________ 3 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 DS1340-18 1.71 1.8 1.89 DS1340-3 2.7 3.0 3.3 Supply Voltage (Note 8) VCC DS1340-33 2.97 3.3 5.5 V Input Logic 1 (SDA, SCL) VIH (Note 8) 0.7 x VCC VCC + 0.3 V Input Logic 0 (SDA, SCL) VIL (Note 8) -0.3 +0.3 x VCC V Supply Voltage, Pullup (FT/OUT, SDA, SCL), VCC = 0V VPU (Note 8) 5.5 V DS1340-18 1.3 3.7 DS1340-3 1.3 3.7 Backup Supply Voltage (Note 8) VBACKUP DS1340-33 1.3 5.5 V R1 (Notes 9, 10) 250 R2 (Note 11) 2000 Trickle-Charge Current-Limiting Resistors R3 (Note 12) 4000 Ω DS1340-18 1.51 1.6 1.71 DS1340-3 2.45 2.6 2.7 Power-Fail Voltage (Note 8) 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 72 150 DS1340-3 108 200 Active Supply Current (Note 13) ICCA DS1340-33 192 300 µA DS1340-18 60 100 DS1340-3 81 125 Standby Current (Note 14) ICCS DS1340-33 100 150 µA VBACKUP Leakage Current IBACKUPLKG VBACKUP = 3.7V 100 nA DC ELECTRICAL CHARACTERISTICS (VCC = 0V, VBACKUP = 3.7V, TA = -40°C to +85°C, unless otherwise noted.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS IBACKUP1 OSC ON, FT = 0 (Note 15) 800 1150 IBACKUP2 OSC ON, FT = 1 (Note 15) 850 1250 VBACKUP Current IBACKUP3 OSC ON, FT = 0, VBACKUP = 3.0V, TA = +25°C (Notes 15, 16) 800 1000 nA VBACKUP Data-Retention Current IBACKUPDR OSC OFF 25.0 100 nA |
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