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DS1345ABG-100-IND Datasheet(PDF) 9 Page - Maxim Integrated Products |
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DS1345ABG-100-IND Datasheet(HTML) 9 Page - Maxim Integrated Products |
9 / 12 page DS1345Y/AB 9 of 12 9. Each DS1345 has a built-in switch that disconnects the lithium source until the user first applies VCC. The expected tDR is defined as accumulative time in the absence of VCC starting from the time power is first applied by the user. This parameter is assured by component selection, process control, and design. It is not measured directly during production testing. 10. All AC and DC electrical characteristics are valid over the full operating temperature range. For commercial products, this range is 0 °C to 70°C. For industrial products (IND), this range is -40°C to +85 °C. 11. In a power-down condition the voltage on any pin may not exceed the voltage on VCC. 12. tWR1 and tDH1 are measured from WE going high. 13. tWR2 and tDH2 are measured from CE going high. 14. RST and BW are open-drain outputs and cannot source current. External pullup resistors should be connected to these pins for proper operation. Both pins will sink 10mA. 15. DS1345 modules are recognized by Underwriters Laboratory (U.L. ®) under file E99151. DC TEST CONDITIONS AC TEST CONDITIONS Outputs Open Output Load: 100 pF + 1TTL Gate Cycle = 200ns for operating current Input Pulse Levels: 0 – 3.0V All voltages are referenced to ground Timing Measurement Reference Levels Input: 1.5V Output: 1.5V Input pulse Rise and Fall Times: 5ns ORDERING INFORMATION DS1345 TTP - SSS - III Operating Temperature Range blank: 0 ° to 70° IND: -40 ° to +85°C Access Speed 70: 70ns 100: 100ns Package Type P: 34-pin PowerCap Module VCC Tolerance AB: ±5% Y: ±10% |
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