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UPD72012 Datasheet(PDF) 25 Page - NEC |
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UPD72012 Datasheet(HTML) 25 Page - NEC |
25 / 36 page Data Sheet S13918EJ3V0DS 25 µPD72012 AC Characteristics (VDD = 3.3 V +0.3 V, TA = 0 to +70 °°°°C) (1) Full-speed output driver characteristics Parameter Symbol Conditions MIN. TYP. MAX. Unit Output rise time (FS) Output fall time (FS) tFR, tFF UD0, UD1 CL = 50 pF, TA = 25 °C, 10% to 90% 420 ns Crossover output voltage VCRS 1.3 2.0 V Driver output resistance ZDRV 28 44 Ω Full-speed data rate tFDRATE 12Mbps ±0.25% 11.97 12.03 Mbps tDJ1 Continuous transition ±3.5 ns Differential driver jitter (FS) tDJ2 Pair transition ±4.0 ns Source jitter on SE0 transition from differential transition (FS) tFDEOP –2 +5 ns tJR1 Continuous transition ±18.5 ns Receiver jitter (FS) tJR2 Pair transition ±9ns One-way propagation delay tFPROP 26 ns EOP source SE0 interval tFEOPT 160 175 ns EOP receiver SE0 interval tFEOPR Accept as effective EOP. 82 ns SE0 time interval on differential transition tFST 14 ns (2) HUB repeater characteristics (Full-speed) Parameter Symbol Conditions MIN. TYP. MAX. Unit Output rise time (LS) Output fall time (LS) tr, tf D10 to D50, D11 to D51 CL = 50 pF, TA = 25 °C, 10% to 90% 420 ns tHDD1 With cable 70 ns Differential data delay (LS) tHDD2 Without cable 44 ns tHDJ1 Continuous transition ±3 ns Differential driver jitter (LS) tHDJ2 Pair transition ±1 ns Data bit length distortion after SOP (LS) tFSOP +5 ns HUB EOP delay for tHDD1 tFEOPD 015 ns EOP output width skew (LS) tFHESK ±15 ns |
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