LTC485CN8(RevE) Ver la hoja de datos (PDF) - Linear Technology

Número de pieza

componentes Descripción

Fabricante

LTC485CN8
(Rev.:RevE)

Low Power RS485 Interface Transceiver

Linear Technology 

LTC485

UW

W

SWITCHI G TI E WAVEFOR S

3V

DI

0V

B

A

VO

0V

– VO

1.5V

f = 1MHz, tr ≤ 10ns, tf ≤ 10ns

t PLH

VO

1/2 VO

10%

tr

tSKEW

80%

VDIFF = V(A) – V(B)

1.5V

t PLH

1/2 VO

t SKEW

90%

20%

tf

Figure 5. Driver Propagation Delays

LTC485 • F05

3V

DI

0V

5V

A, B

VOL

VOH

A, B

0V

1.5V

f = 1MHz, tr ≤ 10ns, tf ≤ 10ns

1.5V

t ZL

t LZ

2.3V

OUTPUT NORMALLY LOW

0.5V

2.3V

OUTPUT NORMALLY HIGH

0.5V

t ZH

t HZ

Figure 6. Driver Enable and Disable Times

LTC485 • F06

VOH

R

VOL

VOD2

A, B

– VOD2

3V

RE

0V

5V

R

R

0V

4

1.5V

OUTPUT

1.5V

t PHL

f = 1MHz, tr ≤ 10ns, tf ≤ 10ns tPLH

0V

INPUT

Figure 7. Receiver Propagation Delays

1.5V f = 1MHz, tr ≤ 10ns, tf ≤ 10ns

t ZL

t LZ

1.5V

OUTPUT NORMALLY LOW

1.5V

0.5V

1.5V

OUTPUT NORMALLY HIGH

0.5V

t ZH

t HZ

Figure 8. Receiver Enable and Disable Times

LTC485 • F07

LTC485 • F08

Share Link: