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ISO7840FDW Datasheet(PDF) 11 Page - Texas Instruments |
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ISO7840FDW Datasheet(HTML) 11 Page - Texas Instruments |
11 / 36 page 11 ISO7840, ISO7840F www.ti.com SLLSEN2B – JULY 2015 – REVISED APRIL 2016 Product Folder Links: ISO7840 ISO7840F Submit Documentation Feedback Copyright © 2015–2016, Texas Instruments Incorporated (1) Also known as pulse skew. (2) tsk(o) is the skew between outputs of a single device with all driving inputs connected together and the outputs switching in the same direction while driving identical loads. (3) tsk(pp) is the magnitude of the difference in propagation delay times between any terminals of different devices switching in the same direction while operating at identical supply voltages, temperature, input signals and loads. 6.14 Switching Characteristics—2.5-V Supply VCC1 = VCC2 = 2.5 V ±10% (over recommended operating conditions unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT tPLH, tPHL Propagation delay time See Figure 7 7.5 11.7 17.5 ns PWD Pulse width distortion(1) |tPHL – tPLH| 0.66 4.2 ns tsk(o) Channel-to-channel output skew time(2) Same-direction Channels 2.2 ns tsk(pp) Part-to-part skew time(3) 4.5 ns tr Output signal rise time See Figure 7 1 3.5 ns tf Output signal fall time 1.2 3.5 ns tPHZ Disable propagation delay, high-to-high impedance output See Figure 8 22 45 ns tPLZ Disable propagation delay, low-to-high impedance output 22 45 ns tPZH Enable propagation delay, high impedance-to-high output for ISO7840 18 45 ns Enable propagation delay, high impedance-to-high output for ISO7840F 2 2.5 μs tPZL Enable propagation delay, high impedance-to-low output for ISO7840 2 2.5 μs Enable propagation delay, high impedance-to-low output for ISO7840F 18 45 ns tfs Default output delay time from input power loss Measured from the time VCC goes below 1.7 V. See Figure 9 0.2 9 μs tie Time interval error 216 – 1 PRBS data at 100 Mbps 0.91 ns |
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