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LTC2862AHDD-1-PBF

±60V Fault Protected 3V to 5.5V RS485/RS422 Transceiver with Level 4 IEC ESD

Linear Technology 

LTC2862A

Switching Characteristics The l denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C. VCC = 3.3V unless otherwise noted. (Note 2)

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

tSHDNDS

Time to Shutdown

RL = 27Ω, CL = 100pF,

l

RE = High (Figure 5)

50

90

ns

Receiver

tPLHR, tPHLR Receiver Input to Output (LTC2862A-1)

tPLHRS, tPHLRS Receiver Input to Output (LTC2862A-2)

tSKEWR

tSKEWRS

tPFSN

Differential Receiver Skew

|tPLHR – tPHLR| (LTC2862A-1)

Differential Receiver Skew

|tPLHRS – tPHLRS| (LTC2862A-2)

Failsafe Enter Delay (LTC2862A-1)

tPFSNS

Failsafe Enter Delay (LTC2862A-2)

tPFSX

Failsafe Exit Delay (LTC2862A-1)

tPFSXS

Failsafe Exit Delay (LTC2862A-2)

tRR, tFR

tZLR, tZHR

Receiver Output Rise or Fall Time

Receiver Enable Time

CL = 15pF, VCM = 0V, |VAB| = 1.5V, l

tR and tF < 4ns (Figure 6)

CL = 15pF, VCM = 0V, |VAB| = 1.5V, l

tR and tF < 4ns (Figure 6)

CL = 15pF (Figure 6)

l

CL = 15pF (Figure 6)

l

CL = 15pF, VCM = 0V, |VAB| = 1.5V,

l

tR and tF < 4ns (Figure 8)

CL = 15pF, VCM = 0V, |VAB| = 1.5V,

l

tR and tF < 4ns (Figure 8)

CL = 15pF, VCM = 0V, |VAB| = 1.5V,

l

tR and tF < 4ns (Figure 8)

CL = 15pF, VCM = 0V, |VAB| = 1.5V,

l

tR and tF < 4ns (Figure 8)

CL = 15pF (Figure 6)

l

RL = 500Ω, CL = 15pF, DE = High l

(Figure 7)

50

65

ns

400

700

ns

1

5

ns

5

30

ns

80

110

ns

1.5

2.3

µs

45

60

ns

0.7

1.3

µs

3

6

ns

18

30

ns

tLZR, tHZR

Receiver Disable Time

RL = 500Ω, CL = 15pF, DE = High l

(Figure 7)

29

40

ns

tZHSR, tZLSR Receiver Enable from Shutdown

RL = 500Ω, CL = 15pF, DE = High l

(Figure 7)

5

10

µs

tSHDNR

Time to Shutdown

RL = 500Ω, CL = 15pF, DE = High l

(Figure 7)

24

40

ns

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 150ºC when overtemperature protection is active.

Continuous operation above the specified maximum operating temperature

may result in device degradation or failure.

Note 5: Not tested in production.

For more information www.linear.com/LTC2862A

2862af

5

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