LTC2850/LTC2851/LTC2852

12

285012fc

TYPICAL APPLICATIONS

R

D

LTC2850

R

D

LTC2850

D

TE = 3.3V

R

D

TE = 3.3V

285012 TA03

R

LTC2854

LTC2854

D

100k

B

A

“A”

“B”

RO

DI

LTC2850

285012 TA02

R

Failsafe “0” Application (Idle State = Logic “0”)

Multi-Node Network with End Termination Using the LTC2850 and LTC2854

APPLICATIONS INFORMATION

is determined by resistive losses in the cable. The down-

ward sloping region represents limits in distance and

data rate due to AC losses in the cable. The solid vertical

line represents the specified maximum data rate in the

RS485/RS422 standards. The dashed lines at 20Mbps

show the maximum data rates of the LTC2850, LTC2851,

and LTC2852.

285012 F14

DATA RATE (bps)

10k

1M

10M

100k

100M

100

1k

10

10k

RS485/RS422

MAX DATA RATE

LTC2850/

LTC2851/LTC2852

MAX DATA RATE

Figure 14. Cable Length vs Data Rate

(RS485/RS422 Standard Shown in Solid Line)