DS10BR254 Datasheet, PDF (6/14 Pages) National Semiconductor (TI) – 1.5 Gbps 1:4 LVDS Repeater

AC Electrical Characteristics
Over recommended operating supply and temperature ranges unless otherwise specified.
Symbol
Parameter
Conditions
LVDS OUTPUT AC SPECIFICATIONS
t_PLHD
t_PHLD
Differential Propagation Delay Low to
High (Note 11)
Differential Propagation Delay High to
Low (Note 11)
R_L = 100Ω
t_SKD1
Pulse Skew |t_PLHD − t_PHLD|
(Notes 11, 12)
t_SKD2
Channel to Channel Skew
(Notes 11, 13)
t_SKD3
Part to Part Skew
(Notes 11, 14)
t_LHT
Rise Time (Note 11)
t_HLT
Fall Time (Note 11)
t_ON
Any PWDN to Output Active Time
t_OFF
Any PWDN to Output Inactive Time
t_SEL
Select Time
JITTER PERFORMANCE (Note 11)
R_L = 100Ω
t_RJ1
t_RJ2
Random Jitter
(RMS Value)
t_RJ3
(Note 15)
t_RJ4
t_DJ1
t_DJ2
Deterministic Jitter
(Peak to Peak Value)
t_DJ3
(Note 16)
t_DJ4
t_TJ1
t_TJ2
Total Jitter
t_TJ3
(Note 17)
t_TJ4
V_ID = 350 mV
V_CM = 1.2V
Clock (RZ)
V_ID = 350 mV
V_CM = 1.2V
K28.5 (NRZ)
V_ID = 350 mV
V_CM = 1.2V
PRBS-23 (NRZ)
135 MHz
311 MHz
503 MHz
750 MHz
270 Mbps
622 Mbps
1.0625 Gbps
1.5 Gbps
270 Mbps
622 Mbps
1.0625 Gbps
1.5 Gbps
Min Typ Max Units
440 650 ps
400 650 ps
40 100 ps
40 125 ps
50 200 ps
150 300 ps
150 300 ps
8
20
μs
5
12
ns
5
12
ns
0.5
0.5
0.5
0.5
6
6
9
9
0.01
0.01
0.01
0.01
1
1
1
1
22
21
18
17
0.03
0.03
0.04
0.06
ps
ps
ps
ps
ps
ps
ps
ps
UI_P-P
UI_P-P
UI_P-P
UI_P-P
Note 9: 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.
Note 10: 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 guaranteed.
Note 11: Specification is guaranteed by characterization and is not tested in production.
Note 12: t_SKD1, |t_PLHD − t_PHLD|, Pulse Skew, is the magnitude difference in differential propagation delay time between the positive going edge and the negative
going edge of the same channel.
Note 13: t_SKD2, Channel to Channel Skew, is the difference in propagation delay (t_PLHD or t_PHLD) among all output channels in Broadcast mode (any one input to
all outputs).
Note 14: t_SKD3, Part to Part Skew, is defined as the difference between the minimum and maximum 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.
Note 15: Measured on a clock edge with a histogram and an acummulation of 1500 histogram hits. Input stimulus jitter is subtracted geometrically.
Note 16: Tested with a combination of the 1100000101 (K28.5+ character) and 0011111010 (K28.5- character) patterns. Input stimulus jitter is subtracted
algebraically.
Note 17: Measured on an eye diagram with a histogram and an acummulation of 3500 histogram hits. Input stimulus jitter is subtracted.
www.national.com
6