LTC2876 datasheet(8/32 Pages) LINER

8 / 32 page

LTC2876/LTC2877

28767fa

For more information www.linear.com/LTC2876

Typical perForMance characTerisTics

Receiver Propagation Delay

vs Temperature

Receiver Propagation Delay

Difference vs Temperature

Receiver Output Voltage

vs Output Current (Source and Sink)

Receiver Output Voltage

vs VL Voltage (LTC2877)

PROFIBUS Operation at 12Mbps

VCC = 5V

RS485 Operation at 20Mbps

VCC = 3.3V

Driver Propagation Delay

vs Temperature

Driver Output Skew

vs Temperature

Driver Output Propagation Delay

Difference vs Temperature

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

VCC = 3.3V

VCC = 5V

TEMPERATURE (°C)

–50 –25

75 100 125 150

28767 G10

VCC = 3.3V

VCC = 5V

TEMPERATURE (°C)

–50 –25

75 100 125 150

–5

–4

–3

–2

–1

28767 G11

VCC = 3.3V

VCC = 5V

TEMPERATURE (°C)

–50 –25

75 100 125 150

–5

–4

–3

–2

–1

28767 G12

VCC = 3.3V

VCC = 5V

TEMPERATURE (°C)

–50 –25

75 100 125 150

28767 G13

VCC = 3.3V

VCC = 5V

TEMPERATURE (°C)

–50 –25

75 100 125 150

–5

–4

–3

–2

–1

28767 G14

OUTPUT CURRENT (ABSOLUTE VALUE, mA)

28767 G15

VL = 5.5V

VL = 3.3V

VL = 2.25V

VL = 1.65V

VL = 1.65V TO 5.5V

VOL

for I(RO) = +2mA

VL–VOH for I(RO) = –2mA

VOL

for I(RO) = +3mA

VL–VOH for I(RO) = –3mA

VL (V)

1.5

2.5

3.5

4.5

5.5

100

200

300

400

28767 G16

RCABLE = 0Ω (Fig. 1)

DOUBLE PROFIBUS TERMINATION

50ns/DIV

5V/DIV

1V/DIV

28767 G17

RLDIFF = 54Ω; CL=100pF (Fig. 5)

20ns/DIV

2V/DIV

0.5V/DIV

28767 G18

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