DS91M040 Datasheet, PDF (6/16 Pages) National Semiconductor (TI) – 125 MHz Quad M-LVDS Transceiver

Switching Characteristics (Notes 10, 11, 17)
Over recommended operating supply and temperature ranges unless otherwise specified.
Symbol
Parameter
Conditions
DRIVER AC SPECIFICATIONS
t_PLH
Differential Propagation Delay Low to High
t_PHL
Differential Propagation Delay High to Low
t_SKD1
Pulse Skew (Notes 12, 13)
t_SKD2
Channel-to-Channel Skew (Notes 12, 14)
t_SKD3
Part-to-Part Skew (Notes 12, 15)
t_SKD4
Part-to-Part Skew (Notes 12, 16)
t_TLH
Rise Time (Note 12)
t_THL
Fall Time (Note 12)
t_PZH
Enable Time (Z to Active High)
t_PZL
Enable Time (Z to Active Low )
t_PLZ
Disable Time (Active Low to Z)
t_PHZ
Disable Time (Active High to Z)
RECEIVER AC SPECIFICATIONS
R_L = 50Ω, C_L = 5 pF,
C_D = 0.5 pF
Figures 7, 8
R_L = 50Ω, C_L = 5 pF,
C_D = 0.5 pF
Figures 9, 10
t_PLH
t_PHL
t_SKD1A
Propagation Delay Low to High
Propagation Delay High to Low
Pulse Skew (Receiver Type 1)
(Notes 12, 13)
C_L = 15 pF
Figures 11, 12, 13
t_SKD1B
Pulse Skew (Receiver Type 2)
(Notes 12, 13)
t_SKD2
Channel-to-Channel Skew (Notes 12, 14)
t_SKD3
Part-to-Part Skew (Notes 12, 15)
t_SKD4
Part-to-Part Skew (Notes 12, 16)
t_TLH
Rise Time (Note 12)
t_THL
Fall Time (Note 12)
t_PZH
Enable Time (Z to Active High)
t_PZL
Enable Time (Z to Active Low)
t_PLZ
Disable Time (Active Low to Z)
t_PHZ
Disable Time (Active High to Z)
GENERIC AC SPECIFICATIONS
R_L = 500Ω, C_L = 15 pF
Figures 14, 15
t_WKUP
Wake Up Time (Note 12)
(Master Device Enable (MDE) time)
f_MAX
Maximum Operating Frequency (Note 12)
Min Typ Max Units
1.5 3.3 5.5 ns
1.5 3.3 5.5 ns
30 125 ps
100 200 ps
0.8 1.6 ns
4
ns
1.2 2.0 3.0 ns
1.2 2.0 3.0 ns
7.5 11.5 ns
8.0 11.5 ns
7.0 11.5 ns
7.0 11.5 ns
1.5 3.0 4.5 ns
1.5 3.1 4.5 ns
55 325 ps
475 800 ps
60 300 ps
0.6 1.2 ns
3
ns
0.3 1.1 1.6 ns
0.3 0.65 1.6 ns
3 5.5 ns
3 5.5 ns
3.5 5.5 ns
3.5 5.5 ns
500 ms
125
MHz
Note 10: 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 11: 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 12: Specification is guaranteed by characterization and is not tested in production.
Note 13: 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 14: t_SKD2, Channel-to-Channel Skew, is the difference in propagation delay (t_PLHD or t_PHLD) among all output channels.
Note 15: 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_DD and within 5°C of each other within the operating temperature range.
Note 16: 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 17: C_L includes fixture capacitance and C_D includes probe capacitance.
Note 18: Measured on a clock edge with a histogram and an acummulation of 1500 histogram hits. Input stimulus jitter is subracted geometrically.
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