LTC2858IMS-1(RevB) Ver la hoja de datos (PDF) - Linear Technology
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LTC2858IMS-1 Datasheet PDF : 16 Pages
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LTC2856-1/LTC2856-2
LTC2857-1/LTC2857-2
LTC2858-1/LTC2858-2
SWITCHING CHARACTERISTICS The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VCC = 5V unless otherwise noted. (Note 2)
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX
Driver in LTC2856-1, LTC2857-1, LTC2858-1
fMAX
Maximum Data Rate
(Note 3)
● 20
tPLHD, tPHLD Driver Input to Output
RDIFF = 54Ω, CL = 100pF (Figure 4)
●
ΔtPD
Driver Input to Output Difference |tPLHD – tPHLD| RDIFF = 54Ω, CL = 100pF (Figure 4)
●
tSKEWD
Driver Output Y to Output Z
RDIFF = 54Ω, CL = 100pF (Figure 4)
●
tRD, tFD
Driver Rise or Fall Time
RDIFF = 54Ω, CL = 100pF (Figure 4)
●
tZLD, tZHD,
tLZD, tHZD
tZHSD, tZLSD
Driver Enable or Disable Time
Driver Enable from Shutdown
RL = 500Ω, CL = 50pF, RE = 0V,
●
LTC2856-1, LTC2858-1 (Figure 5)
RL = 500Ω, CL = 50pF, RE = VCC,
●
LTC2856-1, LTC2858-1 (Figure 5)
tSHDN
Time to Shutdown
(DE = ↓, RE = VCC) or (DE = 0V, RE = ↑), ●
LTC2856-1, LTC2858-1 (Figure 5)
Driver in LTC2856-2, LTC2857-2, LTC2858-2
10
50
1
6
1
±6
4
12.5
70
8
100
fMAXS
tPLHDS, tPHLDS
ΔtPDS
tSKEWDS
tRDS, tFDS
tZHDS, tZLDS
tLZDS, tHZDS
tZHSDS, tZLSDS
tSHDNS
Receiver
Maximum Data Rate
Driver Input to Output
Driver Input to Output Difference |tPLHD – tPHLD|
Driver Output A to Output B
Driver Rise or Fall Time
Driver Enable Time
Driver Disable Time
Driver Enable from Shutdown
Time to Shutdown
(Note 3)
RDIFF = 54Ω, CL = 100pF (Figure 4)
RDIFF = 54Ω, CL = 100pF (Figure 4)
RDIFF = 54Ω, CL = 100pF (Figure 4)
RDIFF = 54Ω, CL = 100pF (Figure 4)
RL = 500Ω, CL = 50pF, RE = 0V,
LTC2856-2, LTC2858-2 (Figure 5)
RL = 500Ω, CL = 50pF, RE = 0V,
LTC2856-2, LTC2858-2 (Figure 5)
RL = 500Ω, CL 50pF, RE = VCC,
LTC2856-2, LTC2858-2 (Figure 5)
(DE = 0V, RE↑) or (DE = ↓, RE = VCC),
LTC2856-2, LTC2858-2 (Figure 5)
● 250
●
●
●
●
●
●
●
●
0.95
1.5
50
500
200 ±500
0.90
1.5
300
70
8
500
tPLHR, tPHLR Receiver Input to Output
CL = 15pF, VCM = 1.5V, |VAB| = 1.5V,
●
tR and tF < 4ns (Figure 6)
tSKEWR
Differential Receiver Skew, |tPLHR – tPHLR|
CL = 15pF (Figure 6)
●
tRR, tFR
Receiver Output Rise or Fall Time
CL = 15pF (Figure 6)
●
tZLR, tZHR,
tLZR, tHZR
Receiver Enable/Disable
RL = 1k, CL = 15pF, DE = VCC,
●
LTC2856-1, LTC2856-2, LTC2858-1,
LTC2858-2 (Figure 7)
tZHSR, tZLSR Receiver Enable from Shutdown
RL = 1k, CL = 15pF, DE = 0V,
●
LTC2856-1, LTC2856-2, LTC2858-1,
LTC2858-2 (Figure 7)
50
70
1
6
3
12.5
50
8
UNITS
Mbps
ns
ns
ns
ns
ns
µs
ns
kbps
µs
ns
ns
µs
ns
ns
µs
ns
ns
ns
ns
ns
µs
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.
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.
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