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ST485ECN Datasheet(PDF) 7 Page - STMicroelectronics |
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ST485ECN Datasheet(HTML) 7 Page - STMicroelectronics |
7 / 19 page ST485E Electrical characteristics 7/19 IOSD2 Driver short-circuit current, VO=Low VO = -7 to 12V (3) 35 250 mA IOSR Receiver short-circuit current VO = 0V to VCC 795 mA 1. All currents into device pins are positive; all out of device pins are negative; all voltages are referenced to device ground unless specified. 2. Supply current specification is valid for loaded transmitters when VDE = 0V 3. Applies to peak current. See typical Operating Characteristics. Table 6. DC Electrical characteristics (VCC = 5V ± 5%, TA = TMIN to TMAX, unless otherwise specified. Typical values are referred to TA = 25°C) Symbol Parameter Test conditions (1) Min. Typ. Max. Unit Table 7. Driver switching characteristics (VCC = 5V ± 5%, TA = TMIN to TMAX, unless otherwise specified. Typical values are referred to TA = 25°C) Symbol Parameter Test conditions (1) Min. Typ. Max. Unit tPLH tPHL Propagation delay input to output RDIFF = 54ΩCL1 = CL2 = 100pF (See Figure 4. and Figure 6.) 25 45 ns tSK Output skew to output RDIFF = 54ΩCL1 = CL2 = 100pF (See Figure 4. and Figure 6.) 25 ns tTLH tTHL Rise or fall time RDIFF = 54Ω, CL1 = CL2 = 100pF (See Figure 4. and Figure 6.) 15 40 ns tPZH Output enable time CL = 100pF, S2 = Closed (See Figure 5. and Figure 7.) 35 50 ns tPZL Output enable time CL = 100pF, S1 = Closed (See Figure 5. and Figure 7.) 25 40 ns tPLZ Output disable time CL = 15pF, S1 = Closed (See Figure 5. and Figure 7.) 25 40 ns tPHZ Output disable time CL = 15pF, S2 = Closed (See Figure 5. and Figure 7.) 35 50 ns 1. All currents into device pins are positive; all out of device pins are negative; all voltages are referenced to device ground unless specified. |
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