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DS14C239TWM Datasheet(PDF) 3 Page - National Semiconductor (TI) |
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DS14C239TWM Datasheet(HTML) 3 Page - National Semiconductor (TI) |
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3 / 8 page ![]() Electrical Characteristics (Continued) Over recommended operating conditions unless otherwise specified (Note 2) Symbol Parameter Conditions Min Typ Max Units RECEIVER CHARACTERISTICS (Continued) RIN Input Resistance 30 45 70 kX IIN Input Current VIN ea15V 214 38 50 mA VIN ea3V 043 06 10 mA VIN eb3V b 10 b 06 b 043 mA VIN eb15V b 50 b 38 b 214 mA VOH High Level Output Voltage VIN eb3V IO eb32 mA 35 45 V VIN eb3V IO eb20 mA 40 49 V VOL Low Level Output Voltage VIN ea3V IO ea32 mA 025 04 V VIH High Level Input Voltage EN 24 VCC V VIL Low Level Input Voltage GND 08 V IIH High Level Input Current VIN t 24V b 10 a 10 m A IIL Low Level Input Current VIN s 08V b 10 a 10 m A IOZ Output Leakage Current EN e VCC 0V s ROUT s VCC b 10 01 a 10 m A Switching Characteristics Over recommended operating conditions unless otherwise specified (Note 4) Symbol Parameter Conditions Min Typ Max Units DRIVER CHARACTERISTICS tPLH Propagation Delay LOW to HIGH RL e 3kX 07 40 m s tPHL Propagation Delay HIGH to LOW CL e 50 pF 07 40 m s tsk Skew ltPLH–tPHL l (Figures 1 and 2) 0 10 m s SR1 Output Slew Rate RL e 3kX to7kX CL e 50 pF 40 17 30 V ms Va s 1035V SR2 Output Slew Rate RL e 3kX CL e 2500 pF 30 64 V ms Va s 1035V RECEIVER CHARACTERISTICS tPLH Propagation Delay LOW to HIGH Input Pulse Width l 10 ms 21 65 m s tPHL Propagation Delay HIGH to LOW CL e 50 pF 29 65 m s tsk Skew l tPLH–tPHL l (Figures 3 and 4) 08 20 m s tPLZ (Figures 5 and 7) 025 20 m s tPZL 070 20 m s tPHZ (Figures 5 and 6) 025 20 m s tPZH 070 20 m s tnw Noise Pulse Width Rejected (Figures 3 and 4) 20 10 m s Note 1 ‘‘Absolute Maximum Ratings’’ are those values beyond which the safety of the device cannot be guaranteed They are not meant to imply that the devices should be operated at these limits The tables of ‘‘Electrical Characteristics’’ specify conditions for device operation Note 2 Current into device pins is defined as positive Current out of device pins is defined as negative All voltages are referenced to ground unless otherwise specified Note 3 IOSa and IOSb values are for one output at a time If more than one output is shorted simultaneously the device power dissipation may be exceeded Note 4 Receiver AC input waveform for test purposes tr e tf e 200 ns VIH e 3V VIL eb3V f e 64 kHz (128 kbitssec) Driver AC input waveform for test purposes tr e tf s 10 ns VIH e 3V VIL e 0V f e 64 kHz (128 kbitssec) Note 5 All typicals are given for VCC e 50V and TA ea25 C Va e 1035V Note 6 Ratings apply to ambient temperature at a25 C Above this temperature derate N package 20 mW C and WM package 135 mW C http www nationalcom 3 |
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