Datasheet
DS25BR110
www.ti.com
SNLS255E –MARCH 2007–REVISED APRIL 2013
AC Electrical Characteristics
(1)
Over recommended operating supply and temperature ranges unless otherwise specified.
(2)(3)
Parameter Test Conditions Min Typ Max Units
LVDS OUTPUT AC SPECIFICATIONS (OUT+, OUT-)
t
PHLD
Differential Propagation Delay High to Low 350 465 ps
R
L
= 100Ω
t
PLHD
Differential Propagation Delay Low to High 350 465 ps
t
SKD1
Pulse Skew |t
PLHD
− t
PHLD
|
(4)
45 100 ps
t
SKD2
Part to Part Skew
(5)
45 150 ps
t
LHT
Rise Time 80 150 ps
R
L
= 100Ω
t
HLT
Fall Time 80 150 ps
JITTER PERFORMANCE WITH EQ = OFF
t
RJ1A
V
ID
= 350 mV 2.5 Gbps 0.5 1 ps
Random Jitter (RMS Value) V
CM
= 1.2V
t
RJ2A
No Test Channels
(6)
Clock (RZ)
3.125 Gbps 0.5 1 ps
EQ0 = 0, EQ1 = 0
t
DJ1A
V
ID
= 350 mV 2.5 Gbps 11 40 ps
Deterministic Jitter (Peak to Peak) V
CM
= 1.2V
t
DJ2A
No Test Channels
(7)
K28.5 (NRZ)
3.125 Gbps 11 47 ps
EQ0 = 0, EQ1 = 0
t
TJ1A
V
ID
= 350 mV 2.5 Gbps 0.05 0.16 UI
P-P
Total Jitter (Peak to Peak) V
CM
= 1.2V
t
TJ2A
No Test Channels
(8)
PRBS-23 (NRZ)
3.125 Gbps 0.08 0.20 UI
P-P
EQ0 = 0, EQ1 = 0
JITTER PERFORMANCE WITH EQ = LOW (Figure 5 and Figure 6)
t
RJ1B
V
ID
= 350 mV 2.5 Gbps 0.5 1 ps
Random Jitter (RMS Value) V
CM
= 1.2V
t
RJ2B
Test Channel D
(6)
Clock (RZ)
3.125 Gbps 0.5 1 ps
EQ0 = 1, EQ1 = 0
t
DJ1B
V
ID
= 350 mV 2.5 Gbps 1 16 ps
Deterministic Jitter (Peak to Peak) V
CM
= 1.2V
t
DJ2B
Test Channel D
(7)
K28.5 (NRZ)
3.125 Gbps 11 31 ps
EQ0 = 1, EQ1 = 0
t
TJ1B
V
ID
= 350 mV 2.5 Gbps 0.03 0.09 UI
P-P
Total Jitter (Peak to Peak) V
CM
= 1.2V
t
TJ2B
Test Channel D
(8)
PRBS-23 (NRZ)
3.125 Gbps 0.06 0.14 UI
P-P
EQ0 = 1, EQ1 = 0
JITTER PERFORMANCE WITH EQ = MEDIUM (Figure 5 and Figure 6)
t
RJ1C
V
ID
= 350 mV 2.5 Gbps 0.5 1 ps
Random Jitter (RMS Value) V
CM
= 1.2V
t
RJ2C
Test Channel E
(6)
Clock (RZ)
3.125 Gbps 0.5 1 ps
EQ0 = 0, EQ1 = 1
t
DJ1C
V
ID
= 350 mV 2.5 Gbps 10 29 ps
Deterministic Jitter (Peak to Peak) V
CM
= 1.2V
t
DJ2C
Test Channel E
(7)
K28.5 (NRZ)
3.125 Gbps 27 43 ps
EQ0 = 0, EQ1 = 1
(1) Specification is ensured by characterization and is not tested in production.
(2) The Electrical 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
(3) 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
(4) t
SKD1
, |t
PLHD
− t
PHLD
|, is the magnitude difference in differential propagation delay time between the positive going edge and the negative
going edge of the same channel.
(5) t
SKD2
, Part to Part Skew, is defined as the difference between the minimum and maximum specified differential propagation delays. This
specification applies to devices at the same V
CC
and within 5°C of each other within the operating temperature range.
(6) Measured on a clock edge with a histogram and an accumulation of 1500 histogram hits. Input stimulus jitter is subtracted geometrically.
(7) Tested with a combination of the 1100000101 (K28.5+ character) and 0011111010 (K28.5- character) patterns. Input stimulus jitter is
subtracted algebraically.
(8) Measured on an eye diagram with a histogram and an accumulation of 3500 histogram hits. Input stimulus jitter is subtracted.
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