Datasheet

DS90LT012A, DS90LV012A
www.ti.com SNLS141D –AUGUST 2002–REVISED APRIL 2013
Switching Characteristics
Over Supply Voltage and Operating Temperature ranges, unless otherwise specified.
(1) (2)
Symbol Parameter Conditions Min Typ Max Units
t
PHLD
Differential Propagation Delay High to Low C
L
= 15 pF 1.0 1.8 3.5 ns
t
PLHD
Differential Propagation Delay Low to High V
ID
= 200 mV 1.0 1.7 3.5 ns
t
SKD1
Differential Pulse Skew |t
PHLD
− t
PLHD
|
(3)
(Figure 5 and Figure 6) 0 100 400 ps
t
SKD3
Differential Part to Part Skew
(4)
0 0.3 1.0 ns
t
SKD4
Differential Part to Part Skew
(5)
0 0.4 1.5 ns
t
TLH
Rise Time 350 800 ps
t
THL
Fall Time 175 800 ps
f
MAX
Maximum Operating Frequency
(6)
200 250 MHz
(1) C
L
includes probe and jig capacitance.
(2) Generator waveform for all tests unless otherwise specified: f = 1 MHz, Z
O
= 50Ω, t
r
and t
f
(0% to 100%) ≤ 3 ns for IN±.
(3) t
SKD1
is the magnitude difference in differential propagation delay time between the positive-going-edge and the negative-going-edge of
the same channel.
(4) t
SKD3
, part to part skew, is the differential channel-to-channel skew of any event between devices. This specification applies to devices
at the same V
DD
and within 5°C of each other within the operating temperature range.
(5) t
SKD4
, part to part skew, is the differential channel-to-channel skew of any event between devices. This specification applies to devices
over the recommended operating temperature and voltage ranges, and across process distribution. t
SKD4
is defined as |Max − Min|
differential propagation delay.
(6) f
MAX
generator input conditions: t
r
= t
f
< 1 ns (0% to 100%), 50% duty cycle, differential (1.05V to 1.35 peak to peak). Output criteria:
60%/40% duty cycle, V
OL
(max 0.4V), V
OH
(min 2.4V), load = 15 pF (stray plus probes). The parameter is ensured by design. The limit
is based on the statistical analysis of the device over the PVT range by the transition times (t
TLH
and t
THL
).
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