DS91M125 Datasheet, PDF (5/12 Pages) National Semiconductor (TI) – 125 MHz 1:4 M-LVDS Repeater with LVDS Input

Switching Characteristics
Over recommended operating supply and temperature ranges unless otherwise specified. (Note 11, Note 12, Note 18)
Symbol
Parameter
Conditions
Min Typ Max
DRIVER AC SPECIFICATION
t_PLH
t_PHL
t_SKD1 (t_sk(p))
Differential Propagation Delay Low to High
Differential Propagation Delay High to Low
Pulse Skew |t_PLHD − t_PHLD| (Note 14, Note
19)
R_L = 50Ω, C_L = 5 pF,
C_D = 0.5 pF
Figures 6, 7
3.0 5.5 8.5
3.0 5.5 8.5
65 350
t_SKD2
Channel-to-Channel Skew (Note 15, Note
19)
65 400
t_SKD3
t_SKD4
t_TLH (t_r)
t_THL (t_f)
t_PZH
t_PZL
t_PLZ
t_PHZ
f_MAX
Part-to-Part Skew (Note 16, Note 19)
Part-to-Part Skew (Note 17)
Rise Time (Note 19)
Fall Time (Note 19)
Enable Time (Z to Active High)
Enable Time (Z to Active Low )
Disable Time (Active Low to Z)
Disable Time (Active High to Z)
Maximum Operating Frequency (Note 19)
R_L = 50Ω, C_L = 5 pF,
C_D = 0.5 pF
Figures 8, 9
2.2 2.5
5.5
1.1 2.0 3.0
1.1 2.0 3.0
6
11
6
11
6
11
6
11
125
Units
ns
ns
ps
ps
ns
ns
ns
ns
ns
ns
ns
ns
MHz
Note 11: 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.
Note 12: Typical values represent most likely parametric norms for V_DD = +3.3V and T_A = +25°C, and at the Recommended Operation Conditions at the time of
product characterization and are not guaranteed.
Note 13: Specification is guaranteed by characterization and is not tested in production.
Note 14: 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.
Note 15: t_SKD2, Channel-to-Channel Skew, is the difference in propagation delay (t_PLHD or t_PHLD) among all output channels.
Note 16: t_SKD3, 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_DD and within 5°C of each other within the operating temperature range.
Note 17: t_SKD4, Part-to-Part Skew, is the differential channel-to-channel skew of any event between devices. This specification applies to devices over
recommended operating temperature and voltage ranges, and across process distribution. t_SKD4 is defined as |Max − Min| differential propagation delay.
Note 18: C_L includes fixture capacitance and C_D includes probe capacitance.
Note 19: Specification is guaranteed by characterization and is not tested in production.
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