LTC2857CMS8-1-PBF データシートの表示（PDF） - Linear Technology
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LTC2857CMS8-1-PBF Datasheet PDF : 20 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
ICCT
Supply Current in Transmit Mode
No
RE
Load,
= VCC
DE
=
VCC,
LTC2856-1
LTC2858-1
●
LTC2856-2
●
LTC2858-2
ICCTR
Supply Current with Both Driver and Receiver
Enabled
No
RE
Load,
= 0V
DE
=
VCC,
LTC2856-1
LTC2857-1
●
LTC2858-1
LTC2856-2
●
LTC2857-2
LTC2858-2
630 1000
670 1100
660 1100
700 1200
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)
10
50
1
6
1
±6
4
12.5
70
8
100
Driver in LTC2856-2, LTC2857-2, LTC2858-2
fMAXS
tPLHDS, tPHLDS
ΔtPDS
tSKEWDS
tRDS, tFDS
tZHDS, tZLDS
tLZDS, tHZDS
tZHSDS, tZLSDS
tSHDNS
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
Receiver
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
μA
μA
μA
μA
Mbps
ns
ns
ns
ns
ns
μs
ns
kbps
μs
ns
ns
μs
ns
ns
μs
ns
ns
ns
ns
ns
μs
285678fe
5
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