LTC2859/LTC2861
4
285961fc
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime..
Note 2: All currents into device pins are positive; all currents out of device
pins are negative. All voltages are referenced to device ground unless
otherwise specified.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Driver in Normal Mode (SLO HIGH)
f
MAX
Maximum Data Rate Note 3
l
20 Mbps
t
PLHD
, t
PHLD
Driver Input to Output R
DIFF
= 54Ω, C
L
= 100pF (Figure 3)
l
10 50 ns
Dt
PD
Driver Input to Output Difference
|t
PLHD
-t
PHLD
|
R
DIFF
= 54Ω, C
L
= 100pF (Figure 3)
l
1 6 ns
t
SKEWD
Driver Output Y to Output Z R
DIFF
= 54Ω, C
L
= 100pF (Figure 3)
l
1 ±6 ns
t
RD
, t
FD
Driver Rise or Fall Time R
DIFF
= 54Ω, C
L
= 100pF (Figure 3)
l
4 12.5 ns
t
ZLD
, t
ZHD
, t
LZD
,
t
HZD
Driver Enable or Disable Time R
L
= 500Ω, C
L
= 50pF, RE = 0 (Figure 4)
l
70 ns
t
ZHSD
, t
ZLSD
Driver Enable from Shutdown R
L
= 500Ω, C
L
= 50pF, RE = V
CC
(Figure 4)
l
8 µs
t
SHDN
Time to Shutdown
(DE = ↓, RE = V
CC
) or (DE = 0, RE ↑)
(Figure 4)
l
100 ns
Driver in SLO Mode (SLO LOW)
f
MAXS
Maximum Data Rate Note 3
l
250 kbps
t
PLHDS,
t
PHLDS
Driver Input to Output R
DIFF
= 54Ω, C
L
= 100pF (Figure 3)
l
0.95 1.5 µs
Dt
PDS
Driver Input to Output Difference
|t
PLHR
-t
PHLR
|
R
DIFF
= 54Ω, C
L
= 100pF (Figure 3)
l
50 500 ns
t
SKEWDS
Driver Output A to Output B R
DIFF
= 54Ω, C
L
= 100pF (Figure 3)
(H-Grade)
l
l
200
200
±500
±750
ns
ns
t
RDS,
t
FDS
Driver Rise or Fall Time R
DIFF
= 54Ω, C
L
= 100pF (Figure 3)
l
0.9 1.5 µs
t
ZHDS,
t
ZLDS
Driver Enable Time R
L
= 500Ω, C
L
= 50pF, RE = 0 (Figure 4)
l
300 ns
t
LZDS,
t
HZDS
Driver Disable Time R
L
= 500Ω, C
L
= 50pF, RE = 0 (Figure 4)
l
70 ns
t
ZHSDS,
t
ZLSDS
Driver Enable from Shutdown R
L
= 500Ω, C
L
= 50pF, RE = V
CC
(Figure 4)
l
8 µs
t
SHDNS
Time to Shutdown
(DE = 0, RE = ↑) or (DE = ↓, RE = V
CC
) (Figure 4)
l
500 ns
Receiver
t
PLHR
, t
PHLR
Receiver Input to Output C
L
= 15pF, V
CM
= 1.5V, |V
AB
| = 1.5V, t
R
and t
F
<
4ns (Figure 5)
l
50 70 ns
t
SKEWR
Differential Receiver Skew
|t
PLHR
-t
PHLR
|
C
L
= 15pF (Figure 5)
l
1 6 ns
t
RR
, t
FR
Receiver Output Rise or Fall Time C
L
= 15pF (Figure 5)
l
3 12.5 ns
t
ZLR
, t
ZHR
, t
LZR
,
t
HZR
Receiver Enable/Disable R
L
= 1kΩ, C
L
=15pF, DE = V
CC
(Figure 6)
DI = 0 or V
CC
l
50 ns
t
ZHSR
, t
ZLSR
Receiver Enable from Shutdown R
L
= 1kΩ, C
L
= 15pF, DE = 0V (Figure 6)
DI = 0 or V
CC
l
8 µs
t
RTEN
, t
RTZ
Termination Enable or Disable Time V
B
= 0V, V
AB
= 2V, RE = V
CC
, DE = 0V (Figure 7)
l
100 µs
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C, V
CC
= 5V, T
E
= 0 unless otherwise noted (Note 2).
Note 3: Maximum data rate is guaranteed by other measured parameters
and is not tested directly.
Note 4: This IC includes overtemperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperature will exceed 125°C when overtemperature protection is active.
Continuous operation above the specified maximum operating junction
temperature may result in device degradation or failure.
swiTchinG characTerisTics
