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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AM79C971VCW датащи(PDF) 202 Page - Advanced Micro Devices |
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AM79C971VCW датащи(HTML) 202 Page - Advanced Micro Devices |
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202 / 265 page  202 Am79C971 DC CHARACTERISTICS OVER COMMERCIAL OPERATING RANGES UNLESS OTHERWISE SPECIFIED (CONTINUED) Notes: 2. OL1 applies to AD[31:00], C/BE[3:0], PAR and REQ OL2 applies to DEVSEL, FRAME, INTA, IRDY, PERR, SERR, STOP, TRDY, EECS, EEDI, EBUA_EBA[7:0], EBDA[15:8], EBD[7:0], EROMCS, ERAMCS, AS_EBOE, EBWE, TXD[3:0], TX_EN, TX_ER, MDC, MDIO and TDO. IOL3 applies to EESK/LED1/SFBD, LED2/SRDCLK, EEDO/LED3/SRD, and EEDI/LED0. Parameter Symbol Parameter Description Test Conditions Min Max Units Twisted Pair Interface (10BASE-T) (Cont’d) VTHS- RXD post-squelch negative threshold (peak) Sinusoid 5 MHz ≤ f ≤ 10 MHz LRT = 0 (CSR15, bit 9) -293 -150 mV VLTSQ+ RXD positive squelch threshold (peak) Sinusoid 5 MHz ≤ f ≤ 10 MHz LRT = 1 (CSR15, bit 9) 180 312 mV VLTSQ- RXD negative squelch threshold (peak) Sinusoid 5 MHz ≤ f ≤ 10 MHz LRT = 1 (CSR15, bit 9) -312 -180 mV VLTHS+ RXD post-squelch positive threshold (peak) Sinusoid 5 MHz ≤ f ≤ 10 MHz LRT = 1 (CSR15, bit 9) 90 176 mV VLTHS- RXD post-squelch negative threshold (peak) Sinusoid 5 MHz ≤ f ≤10 MHz LRT = 1 (CSR15, bit 9) -176 -90 mV VRXDTH RXD switching threshold (Note 4) -35 35 mV VTXH TXD ± and TXP± output HIGH voltage VSS= 0 V VDD - 0.6 VDD V VTXL TXD ± and TXP± output LOW voltage VDD= 5 V VSS VSS + 0.6 V VTXI TXD ± and TXP± differential output voltage imbalance -40 40 mV VTXOFF TXD ± and TXP± idle output voltage 40 mV RTX TXD ±, TXP± differential driver output impedance (Note 4) 80 _ Attachment Unit Interface (AUI) IIAXD Input Current at DI+ and DI- -1V < VIN < AVDD + 0.5 V -500 +500 µA IIAXC Input current at CI+ and CI- -1V < VIN < AVDD + 0.5 V -500 +500 µA VAOD Differential Output Voltage |(DO+)- (DO-)| RL = 78 Ω 630 1200 mV VAODOFF Transmit Differential Output Idle Voltage RL = 78 Ω (Note 9) -40 40 mV IAODOFF Transmit Differential Output Idle Current RL = 78 Ω (Note 8) -1 1 mA VCMT Transmit Output Common Mode Voltage RL = 78 Ω 2.5 AVDD V VODI DO ± Transmit Differential Output Voltage Imbalance RL = 78 Ω (Note 7) 25 mV VATH Receive Data Differential Input Threshold -35 35 mV VASQ DI ± and CI± Differential Input Threshold (Squelch) -275 -160 mV |
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