DS92LX2121_14 Datasheet, PDF (13/43 Pages) Texas Instruments – 10 - 50 MHz DC-Balanced Channel Link III Bi-Directional Control Serializer and Deserializer

DS92LX2121, DS92LX2122
www.ti.com
SNLS330J – MAY 2010 – REVISED JANUARY 2014
Bi-Directional Control Bus DC Characteristics (SCL, SDA) - I²C Compliant (continued)
Symbol
Parameter
Conditions
Min
Typ
Max
SCL and SDA VDDIO = 3.0V IOL = 1.5
mA
0.36
V_OL
Low Level Output Voltage
SCL and SDA VDDIO = 1.71V IOL = 1
mA
0.36
Units
V
V
AC Timing Diagrams and Test Circuits
Device Pin Name
PCLK
Signal Pattern
T
ODD D_IN/R_OUT
EVEN D_IN/R_OUT
Figure 6. “Worst Case” Test Pattern
Vdiff
80%
20%
80%
Vdiff = 0V
20%
t_LHT
t_HLT
Vdiff = (D_OUT+) - (D_OUT-)
Figure 7. Serializer CML Output Load and Transition Times
D_OUT+
D_OUT-
100 nF
100 nF
Z_Diff = 100:
50:
100:
50:
SCOPE
BW & 4.0 GHz
Figure 8. Serializer CML Output Load and Transition Times
16
D_IN/HS/VS
D_OUT+
R_L
D_OUT-
PCLK
Figure 9. Serializer VOD DC Diagram
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