DS90C385A
SNLS167K –MARCH 2004–REVISED APRIL 2013
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Transmitter Switching Characteristics
Over recommended operating supply and temperature ranges unless otherwise specified
Symbol Parameter Min Typ Max Unit
LLHT LVDS Low-to-High Transition Time (Figure 5)0.75 1.4 ns
LHLT LVDS High-to-Low Transition Time (Figure 5)0.75 1.4 ns
TPPos0 Transmitter Output Pulse Position (Figure 13)(1) f = 25MHz -0.45 0 +0.45 ns
TPPos1 Transmitter Output Pulse Position 5.26 5.71 6.16 ns
TPPos2 Transmitter Output Pulse Position 10.98 11.43 11.88 ns
TPPos3 Transmitter Output Pulse Position 16.69 17.14 17.59 ns
TPPos4 Transmitter Output Pulse Position 22.41 22.86 23.31 ns
TPPos5 Transmitter Output Pulse Position 28.12 28.57 29.02 ns
TPPos6 Transmitter Output Pulse Position 33.84 34.29 34.74 ns
TPPos0 Transmitter Output Pulse Position (Figure 13)(1) f = 40 MHz -0.25 0 +0.25 ns
TPPos1 Transmitter Output Pulse Position 3.32 3.57 3.82 ns
TPPos2 Transmitter Output Pulse Position 6.89 7.14 7.39 ns
TPPos3 Transmitter Output Pulse Position 10.46 10.71 10.96 ns
TPPos4 Transmitter Output Pulse Position 14.04 14.29 14.54 ns
TPPos5 Transmitter Output Pulse Position 17.61 17.86 18.11 ns
TPPos6 Transmitter Output Pulse Position 21.18 21.43 21.68 ns
TPPos0 Transmitter Output Pulse Position (Figure 13)(1) f = 65 MHz -0.20 0 +0.20 ns
TPPos1 Transmitter Output Pulse Position 2.00 2.20 2.40 ns
TPPos2 Transmitter Output Pulse Position for Bit 2 4.20 4.40 4.60 ns
TPPos3 Transmitter Output Pulse Position for Bit 3 6.39 6.59 6.79 ns
TPPos4 Transmitter Output Pulse Position 8.59 8.79 8.99 ns
TPPos5 Transmitter Output Pulse Position 10.79 10.99 11.19 ns
TPPos6 Transmitter Output Pulse Position 12.99 13.19 13.39 ns
TPPos0 Transmitter Output Pulse Position (Figure 13)(1) f = 87.5 MHz -0.20 0 +0.20 ns
TPPos1 Transmitter Output Pulse Position 1.48 1.68 1.88 ns
TPPos2 Transmitter Output Pulse Position 3.16 3.36 3.56 ns
TPPos3 Transmitter Output Pulse Position 4.84 5.04 5.24 ns
TPPos4 Transmitter Output Pulse Position 6.52 6.72 6.92 ns
TPPos5 Transmitter Output Pulse Position 8.20 8.40 8.60 ns
TPPos6 Transmitter Output Pulse Position 9.88 10.08 10.28 ns
TSTC Required TxIN Setup to TxCLK IN 2.5 ns
(Figure 7)at 85MHz
THTC Required TxIN Hold to TxCLK IN (Figure 7)at 87.5 MHz 0.5 ns
TCCD TxCLK IN to TxCLK OUT Delay. Measure from TxCLK TA= -10°, and 3.086 7.211 ns
IN edge to immediately crossing point of differential 87.5MHz for "Min",
TxCLK OUT by following the positive TxCLK OUT. 50% TA= 70°, and
duty cycle input clock is assumed. (Figure 8)25MHz for "Max",
VCC = 3.6V, R_FB
pin = VCC
Measure from TxCLK IN edge to immediately crossing TA= -10°, and 2.868 6.062 ns
point of differential TxCLK OUT by following the positive 87.5MHz for "Min",
TxCLK OUT. 50% duty cycle input clock is assumed. TA= 70°, and
(Figure 9)25MHz for "Max",
VCC = 3.6V, R_FB
pin = GND
(1) The Minimum and Maximum Limits are based on statistical analysis of the device performance over process, voltage, and temperature
ranges. This parameter is functionality tested only on Automatic Test Equipment (ATE).
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