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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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TSB41AB1 датащи(PDF) 17 Page - Texas Instruments |
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TSB41AB1 датащи(HTML) 17 Page - Texas Instruments |
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17 / 70 page  TSB41AB1 IEEE 1394a2000 ONEPORT CABLE TRANSCEIVER/ARBITER SLLS423I − JUNE 2000 − REVISED MARCH 2005 17 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 electrical characteristics over recommended ranges of operating conditions (unless otherwise noted) driver PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VOD Differential output voltage 56 Ω, See Figure 1 172 265 mV I(DIFF) Driver difference current, TPA+, TPA−, TPB+, TPB− Drivers enabled, speed signaling off − 1.05† 1.05† mA I(SP200) Common mode speed signaling current, TPB+, TPB− S200 speed signaling enabled − 4.84‡ − 2.53‡ mA I(SP400) Common mode speed signaling current, TPB+, TPB− S400 speed signaling enabled − 12.4‡ − 8.1‡ mA V(OFF) Off state differential voltage Drivers disabled, See Figure 1 20 mV † Limits defined as algebraic sum of TPA+ and TPA− driver currents. Limits also apply to TPB+ and TPB− algebraic sum of driver currents. ‡ Limits defined as absolute limit of each of TPB+ and TPB− driver currents receiver PARAMETER TEST CONDITIONS MIN TYP MAX UNIT zid Differential impedance Drivers disabled 4 7 k Ω zid Differential impedance Drivers disabled 4 pF zic Common-mode impedance Drivers disabled 20 k Ω zic Common-mode impedance Drivers disabled 24 pF V(TH−R) Receiver input threshold voltage Drivers disabled −30 30 mV V(TH−CB) Cable bias detect threshold, TPB cable inputs Drivers disabled 0.6 1 V V(TH+) Positive arbitration comparator threshold voltage Drivers disabled 89 168 mV V(TH−) Negative arbitration comparator threshold voltage Drivers disabled − 168 −89 mV V(TH−SP200) Speed signal threshold TPBIAS−TPA common-mode voltage, drivers disabled 49 131 mV V(TH−SP400) Speed signal threshold TPBIAS−TPA common-mode voltage, drivers disabled 314 396 mV |
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