LTC2876 datasheet(7/32 Pages) LINER

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LTC2876/LTC2877

28767fa

For more information www.linear.com/LTC2876

Typical perForMance characTerisTics

VL Supply Current vs Data Rate

Driver Differential Output Voltage

vs Supply Voltage

Driver Differential Output Voltage

vs Temperature

Driver Output Low/High Voltage

vs Output Current

Driver Output Short-Circuit

Current vs Voltage

Driver and Receiver Propagation

Delay vs VCC

VCC Supply Current vs Voltage for

Various Modes, No Load

VCC Supply Current vs Temperature

for Various Modes, No Load

VCC Supply Current vs Data Rate

TA = 25°C. VCC = VL = 5V, unless otherwise noted. (Note 2)

ICCDR

ICCD

ICCR

ICCS (nA)

VCC SUPPLY VOLTAGE (V)

3.5

4.5

5.5

500

550

600

650

700

750

28767 G01

ICCDR

ICCD

ICCR

ICCS (nA)

TEMPERATURE (°C)

–50 –25

75 100 125 150

500

575

650

725

800

0.1

100

10k

28767 G02

RS485 54Ω/100pF Load (Fig. 5) VCC = 5V

PROFI 100m cable w/term (Fig.1) VCC = 5V

RS485 54Ω/100pF Load (Fig. 5) VCC = 3.3V

No Load, VCC = 5V

No Load, VCC = 3.3V

DATA RATE (Mbps)

28767 G03

VL = 5V, CRO = 15pF

VL = 5V, CRO = 0pF

VL = 1.65V, CRO = 15pF

VL = 1.65V, CRO = 0pF

DATA RATE (Mbps)

0.5

1.0

1.5

2.0

2.5

3.0

28767 G04

VOD(PP) PROFIBUS LOADS (Fig. 1)

VOD(422) (Fig. 2, RL= 50Ω)

VOD(485) (Fig. 2, RL= 27Ω)

VCC (V)

3.5

4.5

5.5

28767 G05

VOD(PP) PROFI LOAD (Fig. 1), VCC = 5V

VOD(422) (Fig. 2, RL= 50Ω), VCC = 5V

VOD(485) (Fig. 2, RL= 27Ω), VCC = 5V

VOD(422) (Fig. 2, RL= 50Ω), VCC = 3.3V

VOD(485) (Fig. 2, RL= 27Ω), VCC = 3.3V

TEMPERATURE (°C)

–50 –25

75 100 125 150

28767 G06

VOH (VCC = 5.0V)

VOH (VCC = 3.3V)

VOL (VCC = 5.0V)

VOL (VCC = 3.3V)

OUTPUT CURRENT (mA)

28767 G07

OUTPUT LOW

OUTPUT HIGH

OUTPUT VOLTAGE (V)

–60

–40

–20

–160

–120

–80

–40

120

160

28767 G08

DRIVER

RECEIVER

VCC

3.5

4.5

5.5

28767 G09

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