LTC1480 datasheet(6/8 Pages) LINER

6 / 8 page

LTC1480

1480fa

LOGIC

VCC

SD3

OUTPUT

SD4

1480 F10

LOGIC

VCC

OUTPUT

1480 F09

1.5V

tZL(SHDN), tZL

tZH(SHDN), tZH

1.5V

tLZ

0.5V

tHZ

OUTPUT NORMALLY LOW

OUTPUT NORMALLY HIGH

3.3V

VOL

VOH

1480 F08

f = 1MHz, tr ≤ 10ns, tf ≤ 10ns

1.5V

tPHL

–VOD2

A – B

1.5V

tPLH

OUTPUT

INPUT

VOD2

VOL

VOH

1480 F07

f = 1MHz, tr ≤ 10ns, tf ≤ 10ns

1.5V

2.3V

tZH(SHDN), tZH

tZL(SHDN), tZL

1.5V

tLZ

0.5V

tHZ

OUTPUT NORMALLY LOW

OUTPUT NORMALLY HIGH

3.3V

VOL

VOH

A, B

1480 F06

f = 1MHz, tr ≤ 10ns, tf ≤ 10ns

APPLICATIO S I FOR ATIO

SWITCHI G TI E WAVEFOR S

CMOS Output Driver

The LTC1480 transceiver provides full RS485 compatibility

while operating from a single 3.3V supply. The RS485

specification requires that a transceiver withstand common

mode voltages of up to 12V or –7V at the RS485 line

connections. Additionally, the transceiver must be immune

to both ESD and latch-up. This rules out traditional CMOS

drivers, which include parasitic diodes from their driver

outputs to each supply rail (Figure 9). The LTC1480 uses a

proprietary process enhancement which adds a pair of

Schottky diodes to the output stage (Figure 10), preventing

Figure 9. Conventional

CMOS Output Stage

Figure 10.

LTC1480 Output Stage

Figure 6. Driver Enable and Disable Times

Figure 7. Receiver Propagation Delays

Figure 8. Receiver Enable and Disable Times

LTC1480 Datasheet(PDF) 6 Page - Linear Technology

LTC1480 Datasheet(HTML) 6 Page - Linear Technology

Html Pages

1 2 3 4 5 6 7 8

Datasheet Download

Link URL