Datasheet
DS90LV027A
www.ti.com
SNLS026C –MARCH 2000–REVISED APRIL 2013
Switching Characteristics
Over Supply Voltage and Operating Temperature Ranges, unless otherwise specified
(1)(2)(3)(4)
Symbol Parameter Conditions Min Typ Max Units
DIFFERENTIAL DRIVER CHARACTERISTICS
t
PHLD
Differential Propagation Delay High to Low R
L
= 100Ω, C
L
= 15 pF 0.3 0.8 1.5 ns
t
PLHD
Differential Propagation Delay Low to High (Figure 3 and Figure 4) 0.3 1.1 1.5 ns
t
SKD1
Differential Pulse Skew |t
PHLD
− t
PLHD
|
(5)
0 0.3 0.7 ns
t
SKD2
Channel to Channel Skew
(6)
0 0.4 0.8 ns
t
SKD3
Differential Part to Part Skew
(7)
0 1.0 ns
t
SKD4
Differential Part to Part Skew
(8)
0 1.2 ns
t
TLH
Transition Low to High Time 0.2 0.5 1.0 ns
t
THL
Transition High to Low Time 0.2 0.5 1.0 ns
f
MAX
Maximum Operating Frequency
(9)
350 MHz
(1) All typicals are given for: V
CC
= +3.3V and T
A
= +25°C.
(2) These parameters are ensured by design. The limits are based on statistical analysis of the device over PVT (process, voltage,
temperature) ranges.
(3) C
L
includes probe and fixture capacitance.
(4) Generator waveform for all tests unless otherwise specified: f = 1 MHz, Z
O
= 50Ω, t
r
≤ 1 ns, t
f
≤ 1 ns (10%-90%).
(5) t
SKD1
, |t
PHLD
− t
PLHD
|, is the magnitude difference in differential propagation delay time between the positive going edge and the negative
going edge of the same channel.
(6) t
SKD2
is the Differential Channel to Channel Skew of any event on the same device.
(7) t
SKD3
, Differential 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
CC
and within 5°C of each other within the operating temperature range.
(8) 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.
(9) f
MAX
generator input conditions: t
r
= t
f
< 1 ns (0% to 100%), 50% duty cycle, 0V to 3V. Output criteria: duty cycle = 45%/55%, V
OD
>
250mV, all channels switching.
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