Datasheet

NRND
DS90LV049H
www.ti.com SNLS200A –SEPTEMBER 2005–REVISED APRIL 2013
SWITCHING CHARACTERISTICS
V
DD
= +3.3V ± 10%, T
A
= −40°C to +125°C
(1) (2)
Symbol Parameter Conditions Min Typ Max Units
LVDS Outputs (Driver Outputs)
t
PHLD
Differential Propagation Delay High to Low 0.7 2 ns
t
PLHD
Differential Propagation Delay Low to High 0.7 2 ns
t
SKD1
Differential Pulse Skew |t
PHLD
− t
PLHD
|
(3)(4)
0 0.05 0.4 ns
R
L
= 100 Ω
t
SKD2
Differential Channel-to-Channel Skew
(3)(5)
0 0.05 0.5 ns
(Figure 2 and Figure 3)
t
SKD3
Differential Part-to-Part Skew
(3)(6)
0 1.0 ns
t
TLH
Rise Time
(3)
0.2 0.4 1 ns
t
THL
Fall Time
(3)
0.2 0.4 1 ns
t
PHZ
Disable Time High to Z 1.5 3 ns
t
PLZ
Disable Time Low to Z 1.5 3 ns
R
L
= 100 Ω
(Figure 4 and Figure 5)
t
PZH
Enable Time Z to High 1 3 6 ns
t
PZL
Enable Time Z to Low 1 3 6 ns
f
MAX
Maximum Operating Frequency
(7)
200 250 MHz
LVCMOS Outputs (Receiver Outputs)
t
PHL
Propagation Delay High to Low 0.5 2 3.5 ns
t
PLH
Propagation Delay Low to High 0.5 2 3.5 ns
t
SK1
Pulse Skew |t
PHL
− t
PLH
|
(8)
0 0.05 0.4 ns
t
SK2
Channel-to-Channel Skew
(9)
(Figure 6 and Figure 7) 0 0.05 0.5 ns
t
SK3
Part-to-Part Skew
(10)
0 1.0 ns
t
TLH
Rise Time
(3)
0.3 0.9 1.4 ns
t
THL
Fall Time
(3)
0.3 0.75 1.4 ns
t
PHZ
Disable Time High to Z 3 5.6 8 ns
t
PLZ
Disable Time Low to Z 3 5.4 8 ns
(Figure 8 and Figure 9)
t
PZH
Enable Time Z to High 2.5 4.6 7 ns
t
PZL
Enable Time Z to Low 2.5 4.6 7 ns
f
MAX
Maximum Operating Frequency
(11)
200 250 MHz
(1) All typical values are given for: V
DD
= +3.3 V, T
A
= +25°C.
(2) Generator waveform for all tests unless otherwise specified: f = 1 MHz, Z
O
= 50 Ω, t
r
≤ 1 ns, and t
f
≤ 1 ns.
(3) These parameters are specified by design. The limits are based on statistical analysis of the device performance over PVT (process,
voltage, temperature) ranges.
(4) t
SKD1
or differential pulse skew is defined as |t
PHLD
− t
PLHD
|. It is the magnitude difference in the differential propagation delays between
the positive going edge and the negative going edge of the same driver channel.
(5) t
SKD2
or differential channel-to-channel skew is defined as the magnitude difference in the differential propagation delays between two
driver channels on the same device.
(6) t
SKD3
or differential part-to-part skew is defined as |t
PLHD Max
− t
PLHD Min
| or |t
PHLD Max
− t
PHLD Min
|. It is 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.
(7) f
MAX
generator input conditions: t
r
= t
f
< 1 ns (0% to 100%), 50% duty cycle, 0 V to 3 V. Output Criteria: duty cycle = 45%/55%, V
OD
>
250 mV, all channels switching.
(8) t
SK1
or pulse skew is defined as |t
PHL
− t
PLH
|. It is the magnitude difference in the propagation delays between the positive going edge
and the negative going edge of the same receiver channel.
(9) t
SK2
or channel-to-channel skew is defined as the magnitude difference in the propagation delays between two receiver channels on the
same device.
(10) t
SK3
or part-to-part skew is defined as |t
PLH Max
− t
PLH Min
| or |t
PHL Max
− t
PHL Min
|. It is the difference between the minimum and maximum
specified propagation delays. This specification applies to devices at the same V
DD
and within 5°C of each other within the operating
temperature range.
(11) f
MAX
generator input conditions: t
r
= t
f
< 1 ns (0% to 100%), 50% duty cycle, V
ID
= 200 mV, V
CM
= 1.2 V . Output Criteria: duty cycle =
45%/55%, V
OH
> 2.7 V, V
OL
< 0.25 V, all channels switching.
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