Datasheet

RXCLK
(diff)
80%
20%
t
ROTR
80%
20%
t
ROTF
SP
t
BUF
t
HD:STA
t
LOW
t
R
t
HD:DAT
t
HIGH
t
F
t
SU:DAT
t
SU:STA
ST
SP
t
SU:STO
SCK
SDA
SMB_CS
t
SU:CS
ST
DS32EL0124, DS32ELX0124
www.ti.com SNLS284K –MAY 2008–REVISED APRIL 2013
CML Retimed Loop Through Output Electrical Specifications, DS32ELX0124 Only
Over recommended operating supply and temperature ranges unless otherwise specified.
(1) (2)
Symbol Parameter Conditions Min Typ Max Units
V
LTOD
Output differential voltage VOD_CTRL resistor = 9.09 kΩ 1.15 1.45 V
(3)
R
LTOT
Output termination 50Ω 40 50 60
Ω
75Ω 60 75 90
ΔR
LTOT
Mismatch in output termination resistors 5 %
(1) The Electrical and Timing Characteristics tables list ensured specifications under the listed Recommended Operating Conditions except
as otherwise modified or specified by the Electrical Characteristics Conditions and/or Notes. Typical specifications are estimations only
and are not ensured.
(2) Typical values represent most likely parametric norms for V
CC
= +3.3V and T
A
= +25°C, and at the Recommended Operation Conditions
at the time of product characterization and are not ensured.
(3) Parameter is specified by characterization and is not tested at production.
CML Retimed Loop Through Output Timing Specifications, DS32ELX0124 Only
Over recommended operating supply and temperature ranges unless otherwise specified.
(1) (2)
Symbol Parameter Conditions Min Typ Max Units
t
JIT
Additive Output Jitter
(3)
24 35 ps
t
OS
Output Overshoot
(3)
1.5 8 %
t
LTR
Retimed output driver differential low to high
(3)
74 105
ps
transition time
t
LTF
Retimed output driver differential high to low
(3)
74 105
ps
transition time
t
LTRFMM
Mismatch in Rise/Fall Time
(3)
5 15 %
t
LTDE
Retimed driver de-emphasis width 1 UI
(1) The Electrical and Timing Characteristics tables list ensured specifications under the listed Recommended Operating Conditions except
as otherwise modified or specified by the Electrical Characteristics Conditions and/or Notes. Typical specifications are estimations only
and are not ensured.
(2) Typical values represent most likely parametric norms for V
CC
= +3.3V and T
A
= +25°C, and at the Recommended Operation Conditions
at the time of product characterization and are not ensured.
(3) Parameter is specified by characterization and is not tested at production.
Timing Diagrams
Figure 3. SMBus Timing Parameters
Figure 4. LVDS Output Transition Time
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