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ADM4853 数据表(PDF) 4 Page - Analog Devices |
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ADM4853 数据表(HTML) 4 Page - Analog Devices |
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4 / 16 page  ADM4850/ADM4851/ADM4852/ADM4853/ADM4854/ADM4855/ADM4856/ADM4857 Rev. D | Page 4 of 16 ADM4850/ADM4854 TIMING SPECIFICATIONS VCC = 5 V ± 5%, TA = TMIN to TMAX, unless otherwise noted. Table 3. Parameter Min Typ Max Unit Test Conditions/Comments DRIVER Maximum Data Rate 115 kbps Propagation Delay, tPLH, tPHL 600 2500 ns RLDIFF = 54 Ω, CL1 = CL2 = 100 pF, see Figure 20 Skew, tSKEW 70 ns RLDIFF = 54 Ω, CL1 = CL2 = 100 pF, see Figure 20 Rise/Fall Times, tR, tF 600 2400 ns RLDIFF = 54 Ω, CL1 = CL2 = 100 pF, see Figure 20 Enable Time, tZH 2000 ns RL = 500 Ω, CL = 100 pF, see Figure 21, ADM4850 Disable Time, tZL 2000 ns RL = 500 Ω, CL = 15 pF, see Figure 21, ADM4850 Enable Time from Shutdown 4000 ns RL = 500 Ω, CL = 100 pF, see Figure 21, ADM4850 RECEIVER Propagation Delay, tPLH, tPHL 400 1000 ns CL = 15 pF, see Figure 22 Differential Skew, tSKEW 255 ns CL = 15 pF, see Figure 22 Enable Time 5 50 ns RL = 1 kΩ, CL = 15 pF, see Figure 23, ADM4850 Disable Time 20 50 ns RL = 1 kΩ, CL = 15 pF, see Figure 23, ADM4850 Enable Time from Shutdown 4000 ns RL = 1 kΩ, CL = 15 pF, see Figure 23, ADM4850 Time to Shutdown 50 330 3000 ns ADM48501 1 The half-duplex device is put into shutdown mode by driving RE high and DE low. If these inputs are in this state for less than 50 ns, the device is guaranteed not to enter shutdown mode. If the enable inputs are in this state for at least 3000 ns, the device is guaranteed to enter shutdown mode. ADM4851/ADM4855 TIMING SPECIFICATIONS VCC = 5 V ± 5%, TA = TMIN to TMAX, unless otherwise noted. Table 4. Parameter Min Typ Max Unit Test Conditions/Comments DRIVER Maximum Data Rate 500 kbps Propagation Delay, tPLH, tPHL 250 600 ns RLDIFF = 54 Ω, CL1 = CL2 = 100 pF, see Figure 20 Skew, tSKEW 40 ns RLDIFF = 54 Ω, CL1 = CL2 = 100 pF, see Figure 20 Rise/Fall Times, tR, tF 200 600 ns RLDIFF = 54 Ω, CL1 = CL2 = 100 pF, see Figure 20 Enable Time, tZH 1000 ns RL = 500 Ω, CL = 100 pF, see Figure 21, ADM4851 Disable Time, tZL 1000 ns RL = 500 Ω, CL = 15 pF, see Figure 21, ADM4851 Enable Time from Shutdown 4000 ns RL = 500 Ω, CL = 100 pF, see Figure 21, ADM4851 RECEIVER Propagation Delay, tPLH, tPHL 400 1000 ns CL = 15 pF, see Figure 22 Differential Skew, tSKEW 250 ns CL = 15 pF, see Figure 22 Enable Time 5 50 ns RL = 1 kΩ, CL = 15 pF, see Figure 23, ADM4851 Disable Time 20 50 ns RL = 1 kΩ, CL = 15 pF, see Figure 23, ADM4851 Enable Time from Shutdown 4000 ns RL = 1 kΩ, CL = 15 pF, see Figure 23, ADM4851 Time to Shutdown 50 330 3000 ns ADM48511 1 The half-duplex device is put into shutdown mode by driving RE high and DE low. If these inputs are in this state for less than 50 ns, the device is guaranteed not to enter shutdown mode. If the enable inputs are in this state for at least 3000 ns, the device is guaranteed to enter shutdown mode. |
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