Datasheet

DS90LV048A
www.ti.com SNLS045B –JULY 1999–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
t
PHLD
Differential Propagation Delay High to Low C
L
= 15 pF 1.2 2.0 2.7 ns
V
ID
= 200 mV
t
PLHD
Differential Propagation Delay Low to High 1.2 1.9 2.7 ns
(Figure 1 and Figure 2)
t
SKD1
Differential Pulse Skew |t
PHLD
− t
PLHD
|
(5)
0 0.1 0.4 ns
t
SKD2
Differential Channel-to-Channel Skew; same device
(3)
0 0.15 0.5 ns
t
SKD3
Differential Part to Part Skew
(4)
1.0 ns
t
SKD4
Differential Part to Part Skew
(6)
1.5 ns
t
TLH
Rise Time 0.5 1.0 ns
t
THL
Fall Time 0.35 1.0 ns
t
PHZ
Disable Time High to Z R
L
= 2 kΩ 8 14 ns
C
L
= 15 pF
t
PLZ
Disable Time Low to Z 8 14 ns
(Figure 3 and Figure 4)
t
PZH
Enable Time Z to High 9 14 ns
t
PZL
Enable Time Z to Low 9 14 ns
f
MAX
Maximum Operating Frequency
(7)
All Channels Switching 200 250 MHz
(1) All typicals are given for: V
CC
= +3.3V, T
A
= +25°C.
(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 R
IN
.
(3) t
SKD2
, Channel-to-Channel Skew is defined as the difference between the propagation delay of one channel and that of the others on the
same chip with any event on the inputs.
(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
CC
, and within 5°C of each other within the operating temperature range.
(5) 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
(6) 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.
(7) f
MAX
generator input conditions: t
r
= t
f
< 1 ns (0% to 100%), 50% duty cycle, differential (1.05V to 1.35V peak to peak). Output criteria:
60/40% duty cycle, V
OL
(max 0.4V), V
OH
(min 2.7V), Load = 15 pF (stray plus probes).
PARAMETER MEASUREMENT INFORMATION
Figure 1. Receiver Propagation Delay and Transition Time Test Circuit
Figure 2. Receiver Propagation Delay and Transition Time Waveforms
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