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CAT824RTDI-GT3 Datasheet(PDF) 4 Page - ON Semiconductor |
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CAT824RTDI-GT3 Datasheet(HTML) 4 Page - ON Semiconductor |
4 / 12 page CAT823, CAT824, CAT825 http://onsemi.com 4 Table 3. ELECTRICAL OPERATING CHARACTERISTICS (DC Characteristics: VCC = 3.0 V to 5.5 V for L/M versions; VCC = 2.0 V to 3.6 V for the R/S/T/U/Y/Z version, −40°C ≤ TA ≤ +85°C unless otherwise noted. Typical Values at TA = 25°C and VCC = 5 V for L/M versions; VCC = 3.3 V for the T/S versions; VCC = 3.0 V for the R version; and VCC = 2.5 V for the U/Y/Z versions.) (Note 1) Symbol Units Max Typ Min Conditions Parameter WATCHDOG INPUT (CAT823 & CAT824) tWD Watchdog Timeout Period 1.12 1.60 3.20 s tWDI WDI Pulse Width VIL = 0.4 V, VIH = 0.8 x VCC 50 ns VIL WDI Input Voltage (Note 3) 0.3 x VCC V VIH 0.7 x VCC WDI Input Current (Note 4) WDI = VCC, Time Average 120 160 mA WDI = 0 V, Time Average −20 −15 MANUAL RESET INPUT (CAT823 & CAT825) VIL MR Input Voltage 0.3 x VCC V VIH 0.7 x VCC tPB MR Pulse Width 1 ms tPDLY MR low to Reset Delay 5 ms MR Noise Immunity Pulse Width with No Reset 100 ns MR Pullup Resistance (internal) 35 52 75 kW 1. Over−temperature limits are guaranteed by design and not production tested. 2. The RESET short−circuit current is the maximum pull−up current when reset is driven low by a bidirectional output. 3. WDI is internally serviced within the watchdog period if WDI is left open. 4. The WDI input current is specified as an average input current when the WDI input is driven high or low. The WDI input if connected to a three−stated output device can be disabled in the tristate mode as long as the leakage current is less than 10 mA and a maximum capacitance of less than 200 pF. To clock the WDI input in the active mode the drive device must be able to source or sink at least 200 mA when active. TYPICAL ELECTRICAL OPERATING CHARACTERISTICS Figure 2. VCC Supply Current vs. Temperature Figure 3. Normalized Reset Threshold Voltage vs. Temperature TEMPERATURE (°C) TEMPERATURE (°C) 120 80 60 40 20 0 −20 −40 1 2 3 4 6 7 8 9 100 80 60 40 20 0 −20 −40 0.94 0.96 0.98 1.00 1.02 1.04 1.06 100 5 |
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