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ST485ECDR Folha de dados(PDF) 4 Page - STMicroelectronics |
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ST485ECDR Folha de dados(HTML) 4 Page - STMicroelectronics |
4 / 13 page ST485E 4/13 DRIVER SWITCHING CHARACTERISTICS (VCC =5V ± 5%, TA =TMIN to TMAX , unless otherwise specified. Typical values are referred to TA =25°C) (See Note 1) Note 1: All currents into device pins are positive; all cuttents out of device pins are negative; all voltages are referenced to device ground unless specified. RECEIVER SWITCHING CHARACTERISTICS (VCC =5V ± 5%, TA =TMIN to TMAX , unless otherwise specified. Typical values are referred to TA = 25°C) (See Note 1) Note 1: All currents into device pins are positive; all cuttents out of device pins are negative; all voltages are referenced to device ground unless specified. Symbol Parameter Test Conditions Min. Typ. Max. Unit tPLH tPHL Propagation Delay Input to Output RDIFF =54Ω CL1 =CL2 = 100pF (See Fig. 3 and 5) 25 45 ns tSK Output Skew to Output RDIFF =54Ω CL1 =CL2 = 100pF (See Fig. 3 and 5) 25 ns tTLH tTHL Rise or Fall Time RDIFF =54Ω CL1 =CL2 = 100pF (See Fig. 3 and 5) 15 40 ns tPZH Output Enable Time CL = 100pF S2 = Closed (See Fig. 4 and 6) 35 50 ns tPZL Output Enable Time CL = 100pF S1 = Closed (See Fig. 4 and 6) 25 40 ns tPLZ Output Disable Time CL = 15pF S1 = Closed (See Fig. 4 and 6) 25 40 ns tPHZ Output Disable Time CL = 15pF S2 = Closed (See Fig. 4 and 6) 35 50 ns Symbol Parameter Test Conditions Min. Typ. Max. Unit tPLH tPHL Propagation Delay Input to Output RDIFF =54Ω CL1 =CL2 = 100pF (See Fig. 3 and 7) 110 130 ns tSKD Differential Receiver Skew RDIFF =54Ω CL1 =CL2 = 100pF (See Fig. 3 and 7) 510 ns tPZH Output Enable Time CRL = 15pF S2 = Closed (See Fig. 2 and 8) 11 35 ns tPZL Output Enable Time CRL = 15pF S1 = Closed (See Fig. 2 and 8) 13 35 ns tPLZ Output Disable Time CRL = 15pF S1 = Closed (See Fig. 2 and 8) 13 35 ns tPHZ Output Disable Time CRL = 15pF S2 = Closed (See Fig. 2 and 8) 11 35 ns fMAX Maximum Data Rate 5 Mbps |
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Descrição semelhante - ST485ECDR |
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