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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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MPC8610EC датащи(PDF) 67 Page - Freescale Semiconductor, Inc |
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MPC8610EC датащи(HTML) 67 Page - Freescale Semiconductor, Inc |
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67 / 96 page  Electrical Characteristics MPC8610 Integrated Host Processor Hardware Specifications, Rev. 0 Freescale Semiconductor 67 VRX-CM-ACp AC peak common mode input voltage 150 mV VRX-CM-ACp = |VRXD+ – VRXD-|/2 – VRX-CM-DC VRX-CM-DC = DC(avg) of |VRX-D+ – VRX-D-|/2 See Note 2 RLRX-DIFF Differential return loss 15 dB Measured over 50 MHz to 1.25 GHz with the D+ and D– lines biased at +300 and –300 mV, respectively. See Note 4 RLRX-CM Common mode return loss 6 dB Measured over 50 MHz to 1.25 GHz with the D+ and D– lines biased at 0 V. See Note 4 ZRX-DIFF-DC DC differential input impedance 80 100 120 Ω RX DC differential mode impedance. See Note 5 ZRX-DC DC input impedance 40 50 60 Ω Required RX D+ as well as D– DC impedance (50 ± 20% tolerance). See Notes 2 and 5 ZRX-HIGH-IMP-DC Powered down DC input impedance 200 k Ω Required RX D+ as well as D– DC Impedance when the receiver terminations do not have power. See Note 6 VRX-IDLE-DET-DIFFp-p Electrical idle detect threshold 65 175 mV VRX-IDLE-DET-DIFFp-p = 2*|VRX-D+ – VRX-D–| Measured at the package pins of the receiver TRX-IDLE-DET-DIFF- ENTERTIME Unexpected electrical idle enter detect threshold integration time 10 ms An unexpected Electrical Idle (VRX-DIFFp-p < VRX-IDLE-DET-DIFFp-p) must be recognized no longer than TRX-IDLE-DET-DIFF-ENTERING to signal an unexpected idle condition. Table 50. Differential Receiver (RX) Input Specifications (continued) Symbol Parameter Min Nom Max Units Comments |
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