LTC2862/LTC2863/
LTC2864/LTC2865
swiTchinG characTerisTics The l denotes the specifications which apply over the full operating
temperature rangeꢁ otherwise specifications are at Tꢂ = 25°C. VCC = VL = 3.3V unless otherwise noted. (Note 2)
SYMBOL
PꢂRꢂMETER
CONDITIONS
MIN
TYP
MꢂX
UNITS
Driver – High Speed (LTC28±2-ꢀꢁ LTC28±3-ꢀꢁ LTC28±4-ꢀꢁ LTC28±5 with SLO High)
l
l
l
f
t
Maximum Data Rate
(Note 3)
20
Mbps
ns
MAX
, t
Driver Input to Output
R
DIFF
DIFF
= 54Ω, C = 100pF (Figure 4)
25
2
50
9
PLHD PHLD
L
Δt
Driver Input to Output Difference
R
= 54Ω, C = 100pF (Figure 4)
ns
PD
L
|t
– t
PHLD
|
PLHD
l
l
l
t
t
Driver Output Y to Output Z
Driver Rise or Fall Time
R
R
= 54Ω, C = 100pF (Figure 4)
10
15
ns
ns
ns
SKEWD
DIFF
L
, t
RD FD
= 54Ω, C = 100pF (Figure 4)
4
DIFF
L
t
t
, t
, t
,
Driver Enable or Disable Time
R = 500Ω, C = 50pF, RE = 0V
180
ZLD ZHD
LZD HZD
L
L
(Figure 5)
l
l
t
, t
Driver Enable from Shutdown
Time to Shutdown
R =500Ω, C = 50pF, RE = High
9
µs
ns
ZHSD ZLSD
L
L
(Figure 5)
t
R = 500Ω, C = 50pF, RE = High
180
SHDND
L
L
(Figure 5)
Driver – Slew Rate Limited ( LTC28±2-2ꢁ LTC28±3-2ꢁ LTC28±4-2ꢁ LTC28±5 with SLO Low)
l
l
l
f
Maximum Data Rate
(Note 3)
250
500
kbps
ns
MAX
t
, t
Driver Input to Output
R
= 54Ω, C = 100pF (Figure 4)
850
50
1500
500
PLHD PHLD
DIFF
DIFF
L
Δt
Driver Input to Output Difference
R
= 54Ω, C = 100pF (Figure 4)
ns
PD
L
|t
PLHD
– t
PHLD
|
l
l
l
t
t
t
Driver Output Y to Output Z
Driver Rise or Fall Time
Driver Enable Time
R
R
= 54Ω, C = 100pF (Figure 4)
500
1200
1200
ns
ns
ns
SKEWD
DIFF
L
, t
= 54Ω, C =100pF (Figure 4)
800
RD FD
DIFF
L
, t
R = 500Ω, C = 50pF, RE = 0V
ZLD ZHD
L
L
(Figure 5)
l
l
l
t
t
t
, t
Driver Disable Time
R = 500Ω, C = 50pF, RE = 0V
180
10
ns
µs
ns
LZD HZD
L
L
(Figure 5)
, t
Driver Enable from Shutdown
Time to Shutdown
R = 500Ω, C = 50pF, RE = High
ZHSD ZLSD
L
L
(Figure 5)
R =500Ω, C = 50pF, RE = High
180
SHDND
L
L
(Figure 5)
Receiver
l
t
t
t
, t
Receiver Input to Output
Differential Receiver Skew
C = 15pF, V = 1.5V, |V | = 1.5V,
50
2
65
9
ns
ns
PLHR PHLR
L
CM
AB
t and t < 4ns (Figure 6)
R
F
C = 15pF (Figure 6)
L
SKEWR
|t
– t
|
PLHR
PHLR
l
l
, t
Receiver Output Rise or Fall Time
Receiver Enable/Disable Time
C = 15pF (Figure 6)
L
3
12.5
40
ns
ns
RR FR
t
t
, t
, t
,
R = 1k, C = 15pF, DE = High (Figure 7)
L L
ZLR ZHR
LZR HZR
l
l
t
, t
Receiver Enable from Shutdown
Time to Shutdown
R = 1k, C = 15pF, DE = 0V, (Figure 7)
9
µs
ns
ZHSR ZLSR
SHDNR
L
L
t
R = 1k, C = 15pF, DE = 0V, (Figure 7)
100
L
L
Note ꢀ. 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.
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 150ºC when overtemperature protection is active.
Continuous operation above the specified maximum operating temperature
may result in device degradation or failure.
2862345fc
6
For more information www.linear.com/LTC2862