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LTC1326-2.5 Datasheet(PDF) 3 Page - Linear Technology |
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LTC1326-2.5 Datasheet(HTML) 3 Page - Linear Technology |
3 / 16 page 3 LTC1326/LTC1326-2.5 132625fc VRT3 Reset Threshold VCC3 0 °C ≤ TA ≤ 70°C ● 3.094 3.118 3.135 V –40 °C ≤ TA ≤ 85°C ● 3.052 3.118 3.143 V VRT5 Reset Threshold VCC5 (LTC1326) 0 °C ≤ TA ≤ 70°C ● 4.687 4.725 4.750 V –40 °C ≤ TA ≤ 85°C ● 4.625 4.725 4.762 V VRT25 Reset Threshold VCC25 (LTC1326-2.5) 0°C ≤ TA ≤ 70°C ● 2.344 2.363 2.375 V –40 °C ≤ TA ≤ 85°C ● 2.312 2.363 2.381 V VRTA Reset Threshold VCCA 0 °C ≤ TA ≤ 70°C ● 0.992 1.000 1.007 V –40 °C ≤ TA ≤ 85°C ● 0.980 1.000 1.007 V VCC VCC3 Operating Voltage RST in Correct Logic State ● 17 V IVCC3 VCC3 Supply Current PBR = VCC3 ● 20 40 µA IVCC5 VCC5 Input Current (LTC1326) VCC5 = 5V ● 410 µA IVCC25 VCC25 Input Current (LTC1326-2.5) VCC25 = 2.5V ● 2.8 7 µA IVCCA VCCA Input Current VCCA = 1V ● –15 0 15 nA tRST Reset Pulse Width RST Low with 10k Ω Pull-Up to VCC3 0 °C ≤ TA ≤ 70°C ● 140 200 280 ms –40 °C ≤ TA ≤ 85°C ● 140 200 300 ms tSRST Soft Reset Pulse Width SRST Low with 10k Ω Pull-Up to VCC3 ● 50 100 200 µs tUV VCC Undervoltage Detect to RST VCC25, VCC3 or VCCA Less Than Reset 13 µs Threshold VRT by More Than 1% IPBR PBR Pull-Up Current PBR = 0V 0 °C ≤ TA ≤ 70°C ● 37 10 µA –40 °C ≤ TA ≤ 85°C ● 37 15 µA VIL PBR, RST Input Low Voltage ● 0.8 V VIH PBR, RST Input High Voltage ● 2V tPW PBR Min Pulse Width ● 40 ns tDB PBR Debounce Deassertion of PBR Input to SRST ● 20 35 ms Output (PBR Pulse Width = 1 µs) tPB PBR Assertion Time for Transition PBR Held Less Than VIL from Soft to Hard Reset Mode 0 °C ≤ TA ≤ 70°C ● 1.4 2.0 2.8 s –40 °C ≤ TA ≤ 85°C ● 1.4 2.0 3.0 s VOL RST Output Voltage Low ISINK = 5mA ● 0.15 0.4 V ISINK = 100µA, VCC3 = 1V, VCC5 = 0V ● 0.05 0.4 V 0 °C ≤ TA ≤ 70°CVCC3 = 0V, VCC5 = 1V ● 0.05 0.4 V VCC3 = 1V, VCC5 = 1V ● 0.05 0.4 V ISINK = 100µA, VCC3 = 1.1V, VCC5 = 0V ● 0.05 0.4 V –40 °C ≤ TA ≤ 85°CVCC3 = 0V, VCC5 = 1.1V ● 0.05 0.4 V VCC3 = 1.1V, VCC5 = 1.1V ● 0.05 0.4 V ISINK = 100µA, VCC3 = 1V, VCC25 = 0V ● 0.05 0.4 V 0 °C ≤ TA ≤ 70°CVCC3 = 0V, VCC25 = 1V ● 0.05 0.4 V VCC3 = 1V, VCC25 = 1V ● 0.05 0.4 V ISINK = 100µA, VCC3 = 1.1V, VCC25 = 0V ● 0.05 0.4 V –40 °C ≤ TA ≤ 85°CVCC3 = 0V, VCC25 = 1.1V ● 0.05 0.4 V VCC3 = 1.1V, VCC25 = 1.1V ● 0.05 0.4 V SRST Output Voltage Low ISINK = 2.5mA ● 0.15 0.4 V RST Output Voltage Low ISINK = 2.5mA ● 0.15 0.4 V ELECTRICAL CHARACTERISTICS SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VCC3 = 3.3V, VCC5 = 5V (for LTC1326),VCC25 = 2.5V (for LTC1326-2.5), VCCA = VCC3, TA = 25°C unless otherwise noted. |
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