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LTC1232CN8 Datasheet(PDF) 3 Page - Linear Technology |
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LTC1232CN8 Datasheet(HTML) 3 Page - Linear Technology |
3 / 8 page 3 LTC1232 sn1232 1232fas SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VCC Supply Voltage ● 4.5 5 5.5 V VIH ST and PB RST Input High Level ● 2VCC+0.3 V VIL ST and PB RST Input Low Level ● – 0.3 0.8 V DC ELECTRICAL CHARACTERISTICS SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS IIL Input Leakage (Note 3) ● –1 1 µA IOH Output Current at 2.4V (Note 5) ● –1 –13 mA IOL Output Current at 0.4V (Note 5) ● 26 mA ICC Supply Current (Note 4) ● 0.5 2 mA VCCTP VCC Trip Point TOL = GND ● 4.5 4.62 4.74 V VCCTP VCC Trip Point TOL = VCC ● 4.25 4.37 4.49 V VHYS VCC Trip Point Hysteresis 40 mV VRST RST Output Voltage at VCC = 1V ISINK = 10µA 4 200 mV The ● denotes the specifications which apply over the full operating temperature. VCC = full operating range. The ● denotes the specifications which apply over the full operating temperature. VCC = full operating range. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS tPB PB RST = VIL ● 40 ms tRST RESET Active Time ● 250 610 1000 ms tST ST Pulse Width ● 20 ns tRPD VCC Detect to RST and RST ● 100 ns tf VCC Slew Rate 4.75V–4.25V ● 300 µs tRPU VCC Detect to RST and RST tR = 5µs ● 250 610 1000 ms (Reset Active Time) tR VCC Slew Rate 4.25V–4.75V ● 0ns tTD ST Pin Detect to RST and RST TD = GND ● 60 150 250 ms (Watchdog Time-Out Period) TD = Floating ● 250 610 1000 ms TD = VCC ● 500 1200 2000 ms CIN Input Capacitance 5pF COUT Output Capacitance 5 pF Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: All voltage values are with respect to GND. Note 3: The PB RST pin is internally pulled up to VCC with an internal impedance of 10k typical. The TD pin has internal bias current. Note 4: Measured with outputs open. Note 5: The RST pin is an open drain output. The ● denotes the specifications which apply over the full operating temperature. VCC = full operating range. AC CHARACTERISTICS RECO E DED OPERATI G CO DITIO S |
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