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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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DP8392 датащи(PDF) 6 Page - National Semiconductor (TI) |
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DP8392 датащи(HTML) 6 Page - National Semiconductor (TI) |
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6 / 10 page  60 Absolute Maximum Ratings (Note 1) Supply Voltage (VEE) b 12V Package Power Rating at 25 C 35 Watts (PC Board Mounted) See Section 5 Derate linearly at the rate of 286 mW C Input Voltage 0 to b12V Storage Temperature b 65 to 150 C Lead Temp (Soldering 10 seconds) 260 C For actual power dissipation of the device please refer to section 70 Recommended Operating Conditions Supply Voltage (VEE) b 9v g5% Ambient Temperature 0 to 70 C If MilitaryAerospace specified devices are required please contact the National Semiconductor Sales OfficeDistributors for availability and specifications 70 Electrical Characteristics VEE eb9V g5% TA e 0 to 70 C (Notes23) Symbol Parameter Min Typ Max Units IEE1 Supply current out of VEE pinnon transmitting b 85 b 130 mA IEE2 Supply current out of VEE pintransmitting b 125 b 180 mA IRXI Receive input bias current (RXI) b 2 a 25 m A ITDC Transmit output dc current level (TXO) 37 41 45 mA ITAC Transmit output ac current level (TXO) g 28 ITDC mA VCD Collision threshold (Receive mode) b 145 b 153 b 158 V VOD Differential output voltage (RXg CDg) g 550 g 1200 mV VOC Common mode output voltage (RXg CDg) b 15 b 20 b 25 V VOB Diff output voltage imbalance (RXg CDg) g 40 mV VTS Transmitter squelch threshold (TXg) b 175 b 225 b 300 mV CX Input capacitance (RXI) 12 pF RRXI Shunt resistancenon transmitting (RXI) 100 KX RTXO Shunt resistancetransmitting (TXO) 10 KX 80 Switching Characteristics VEE eb9V g5% TA e 0 to 70 C (Note 3) Symbol Parameter Fig Min Typ Max Units tRON Receiver startup delay (RXI to RXg) 5 11 4 bits tRd Receiver propagation delay (RXI to RXg) 511 15 50 ns tRr Differential outputs rise time (RXg CDg) 511 4 ns tRf Differential outputs fall time (RXg CDg) 511 4 ns tRJ Receiver cable total jitter 10 g 2ns tTST Transmitter startup delay (TXg to TXO) 6 11 1 bits tTd Transmitter propagation delay (TXg to TXO) 6 11 25 50 ns tTr Transmitter rise time 10% to 90% (TXO) 6 11 25 ns tTf Transmitter fall time 90% to 10% (TXO) 6 11 25 ns tTM tTr and tTf mismatch 05 ns tTS Transmitter skew (TXO) g 05 ns tTON Transmit turn-on pulse width at VTS (TXg) 611 20 ns tTOFF Transmit turn-off pulse width at VTS (TXg) 6 11 250 ns tCON Collision turn-on delay 7 11 7 bits tCOFF Collision turn-off delay 7 11 20 bits fCD Collision frequency (CDg) 7 11 80 125 MHz tCP Collision pulse width (CDg) 711 35 70 ns tHON CD Heartbeat delay (TXg to CDg) 8 11 06 16 m s tHW CD Heartbeat duration (CDg) 8 11 05 10 15 m s tJA Jabber activation delay (TXg to TXO and CDg) 911 20 29 60 ms tJR Jabber reset unjab time (TXg to TXO and CDg) 9 11 250 500 750 ms 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 device should be operated at these limits Note 2 All currents into device pins are positive all currents out of device pins are negative All voltages referenced to ground unless otherwise specified Note 3 All typicals are given for VEE eb9V and TA e 25 C 6 |
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