9

LTC1518/LTC1519

Note that due to the increased skew, this configuration

might not operate at the highest data rates. To transmit

single-ended data over short to medium distances, twisted

pair is recommended with the unused wire grounded at

both ends (Figure 7).

Differential Transmission

Data rates up to 52Mbps can be transmitted over 100 feet

of high quality category 5 twisted pair. Figure 8 shows the

LTC1518 receiving differential data from an LTC1685

transceiver. As in the single-ended configurations, care

must be taken to properly terminate the differential data

lines to avoid unwanted reflections, etc.

Figure 7. Medium Distance Single-Ended Transmission

Using a CMOS Driver

Figure 8. LTC1518 Connected to LTC1685

High Speed RS485 Transceiver

–

+

1/4

LTC1518

LTC1519

10-FT TWISTED PAIR

MC74ACT04

MC74AC04

0.01

µF

100

Ω

100

Ω

3.3k

5V

5V

1k

1518/19 F07

100

Ω

A 1

4

EN

EN

RO

1518/19 F08

1/4 LTC1518

LTC1685

LTC1685

12

3

2 B

7

6

3

2

DE

DI

RO

4

1

100

Ω

7

6

3

2

DE

DI

RO

4

1

RE

RE

APPLICATIO S I FOR ATIO