LTC2856-2 datasheet(5/20 Pages) LINER

5 / 20 page

LTC2856-1/LTC2856-2

LTC2857-1/LTC2857-2

LTC2858-1/LTC2858-2

285678fe

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

UNITS

ICCT

Supply Current in Transmit Mode

No Load, DE = VCC,

RE = VCC

LTC2856-1

LTC2858-1

●

630

1000

μA

LTC2856-2

LTC2858-2

●

670

1100

μA

ICCTR

Supply Current with Both Driver and Receiver

Enabled

No Load, DE = VCC,

RE = 0V

LTC2856-1

LTC2857-1

LTC2858-1

●

660

1100

μA

LTC2856-2

LTC2857-2

LTC2858-2

●

700

1200

μA

Driver in LTC2856-1, LTC2857-1, LTC2858-1

fMAX

Maximum Data Rate

(Note 3)

●

Mbps

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)

●

1±6

tRD, tFD

Driver Rise or Fall Time

RDIFF = 54Ω, CL = 100pF (Figure 4)

●

12.5

tZLD, tZHD,

tLZD, tHZD

Driver Enable or Disable Time

RL = 500Ω, CL = 50pF, RE = 0V,

LTC2856-1, LTC2858-1 (Figure 5)

●

tZHSD, tZLSD

Driver Enable from Shutdown

RL = 500Ω, CL = 50pF, RE = VCC,

LTC2856-1, LTC2858-1 (Figure 5)

●

8μs

tSHDN

Time to Shutdown

(DE =

↓, RE = VCC) or (DE = 0V, RE = ↑),

LTC2856-1, LTC2858-1 (Figure 5)

●

100

Driver in LTC2856-2, LTC2857-2, LTC2858-2

fMAXS

Maximum Data Rate

(Note 3)

●

250

kbps

tPLHDS, tPHLDS Driver Input to Output

RDIFF = 54Ω, CL = 100pF (Figure 4)

●

0.95

1.5

μs

ΔtPDS

Driver Input to Output Difference |tPLHD – tPHLD|RDIFF = 54Ω, CL = 100pF (Figure 4)

●

500

tSKEWDS

Driver Output A to Output B

RDIFF = 54Ω, CL = 100pF (Figure 4)

●

200

±500

tRDS, tFDS

Driver Rise or Fall Time

RDIFF = 54Ω, CL = 100pF (Figure 4)

●

0.90

1.5

μs

tZHDS, tZLDS

Driver Enable Time

RL = 500Ω, CL = 50pF, RE = 0V,

LTC2856-2, LTC2858-2 (Figure 5)

●

300

tLZDS, tHZDS

Driver Disable Time

RL = 500Ω, CL = 50pF, RE = 0V,

LTC2856-2, LTC2858-2 (Figure 5)

●

tZHSDS, tZLSDS Driver Enable from Shutdown

RL = 500Ω, CL 50pF, RE = VCC,

LTC2856-2, LTC2858-2 (Figure 5)

●

8μs

tSHDNS

Time to Shutdown

(DE = 0V, RE

↑) or (DE = ↓, RE = VCC),

LTC2856-2, LTC2858-2 (Figure 5)

●

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)

●

12.5

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)

●

8μs

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