Datasheet

DS92LX2121, DS92LX2122
SNLS330I MAY 2010REVISED APRIL 2013
www.ti.com
Serializer Electrical Characteristics Serializer Switching Characteristics
(1)(2)(3)
Symbol Parameter Conditions Min Typ Max Units
t
LHT
CML Low-to-High Transition R
L
= 100 (Figure 7)
150 330 ps
Time
t
HLT
CML High-to-Low Transition R
L
= 100
150 330 ps
Time (Figure 7)
t
DIS
Data Input Setup to PCLK 2.0 ns
Serializer Data Inputs (Figure 13)
t
DIH
Data Input Hold from PCLK 2.0 ns
t
PLD
Serializer PLL Lock Time R
L
= 100 1 2 ms
RT = 100
f = 10-50 MHz 6.386T + 6.386T +
t
SD
Serializer Delay 6.386T + 5 ns
Reg Address 0x03h b[0] (TRFB = 1) 12 19.7
(Figure 15)
t
JIND
Serializer Output Serializer output intrinsic deterministic
Deterministic Jitter jitter . Measured (cycle-cycle) with 0.13 UI
PRBS-7 test pattern PCLK = 50 MHz
t
JINR
Serializer Output Random Serializer output intrinsic random jitter 0.04 UI
Jitter (cycle-cycle). Alternating-1,0 pattern.
PCLK = 50 MHz
Serializer output peak-to-peak jitter
includes deterministic jitter, random
Peak-to-peak Serializer jitter, and jitter transfer from serializer
t
JINT
0.396 UI
Output Jitter input. Measured (cycle-cycle) with
PRBS-7 test pattern.
PCLK = 50MHz
Serializer Jitter Transfer PCLK = 50 MHz Default Registers
λ
STXBW
1.90 MHz
Function -3 dB Bandwidth
Serializer Jitter Transfer PCLK = 50 MHz Default Registers
δ
STX
0.944 dB
Function (Peaking
Serializer Jitter Transfer PCLK = 50 MHz Default Registers
δ
STXf
Function (Peaking 500 kHz
Frequency)
(1) The Electrical Characteristics tables list guaranteed 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 guaranteed.
(2) Current into device pins is defined as positive. Current out of a device pin is defined as negative. Voltages are referenced to ground
except VOD, ΔVOD, VTH and VTL which are differential voltages.
(3) Typical values represent most likely parametric norms at 1.8V or 3.3V, T
A
= +25°C, and at the Recommended Operation Conditions at
the time of product characterization and are not guaranteed.
Serializer Electrical Characteristics Deserializer Switching Characteristics
(1)(2)(3)
Over recommended operating supply and temperature ranges unless otherwise specified.
Symbol Parameter Conditions Pin/Freq. Min Typ Max Units
t
RCP
Receiver Output Clock Period t
RCP
= t
TCP
PCLK 20 T 100 ns
t
PDC
PCLK Duty Cycle PCLK 45 50 55 %
LVCMOS Low-to-High Transition V
DDIO
: 1.71 V to 1.89 V 1.3 2.0 2.8
t
CLH
Time or 3.0 V to 3.6 V,
Deserializer PCLK
CL = 8pF (lumped load) ns
1.3 2.0 2.8
Output
LVCMOS High-to-Low Transition
Default Registers
t
CHL
Time
(Figure 16 )
(4)
(1) The Electrical Characteristics tables list guaranteed 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 guaranteed.
(2) Current into device pins is defined as positive. Current out of a device pin is defined as negative. Voltages are referenced to ground
except VOD, ΔVOD, VTH and VTL which are differential voltages.
(3) Typical values represent most likely parametric norms at 1.8V or 3.3V, T
A
= +25°C, and at the Recommended Operation Conditions at
the time of product characterization and are not guaranteed.
(4) Specification is guaranteed by design and is not tested in production.
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