General Description

The x485 are low-power transceivers for RS-485 and RS-

422 communication. Each part contains one driver and one

Receiver The driver slew rates of the x485

are not limited, allowing them to

transmit up to 2.5Mbps.

These transceivers draw between 120µA and 500µA of

supply current when unloaded or fully loaded with disabled

Applications

Low-Power RS-485 Transceivers

Low-Power RS-422 Transceivers

Level Translators

Transceivers for EMI-Sensitive Applications

Industrial-Control Local Area Networks

XL485-SS

MSOP8

XL485CS

XD485

RS-485/RS422

SOP8

DIP-8

ABSOLUTE MAXIMUM RATINGS

Supply Voltage (VCC) .............................................................12V

Control Input Voltage (RE, DE)...................-0.5V to (VCC + 0.5V)

Driver Input Voltage (DI).............................-0.5V to (VCC + 0.5V)

Driver Output Voltage (A, B)...................................-8V to +12.5V

Receiver Input Voltage (A, B).................................-8V to +12.5V

Receiver Output Voltage (RO).....................-0.5V to (VCC +0.5V)

Continuous Power Dissipation (TA = +70°C)

8-Pin Plastic DIP (derate 9.09mW/°C above +70°C) ....727mW

8-Pin SO (derate 5.88mW/°C above +70°C).................471mW

8-Pin µMAX (derate 4.1mW/°C above +70°C) ..............830mW

8-Pin CERDIP (derate 8.00mW/°C above +70°C).........640mW

Operating Temperature Ranges

Storage Temperature Range .............................-65°C to +160°C

Lead Temperature (soldering, 10sec) .............................+300°C

DC ELECTRICAL CHARACTERISTICS

(VCC = 5V ±5%, TA = TMIN to TMAX, unless otherwise noted.) (Notes 1, 2)

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional

operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to

absolute maximum rating conditions for extended periods may affect device reliability.

V

VTH

R = 27Ω (RS-485), Figure 4

0.4V ≤ VO ≤ 2.4V

R = 50Ω (RS-422)

IO = 4mA, VID = -200mV

IO = -4mA, VID = 200mV

VCM = 0V

-7V ≤ VCM ≤ 12V

DE, DI, RE

DE, DI, RE

DE, DI, RE

R = 27Ω or 50Ω, Figure 4

R = 27Ω or 50Ω, Figure 4

R = 27Ω or 50Ω, Figure 4

CONDITIONS

µA

±1

IOZR

Three-State (high impedance)

Output Current at Receiver

V

0.4

VOL

Receiver Output Low Voltage

3.5

VOH

Receiver Output High Voltage

mV

70

∆VTH

Receiver Input Hysteresis

V

-0.2

0.2

Receiver Differential Threshold

Voltage

1.5

5

VOD2

Differential Driver Output

(with load)

V

2

V

5

VOD1

Differential Driver Output (no load)

µA

±2

IIN1

Input Current

V

0.8

VIL

Input Low Voltage

V

2.0

VIH

Input High Voltage

V

0.2

∆VOD

Change in Magnitude of Driver

Common-Mode Output Voltage

for Complementary Output States

V

0.2

∆VOD

Change in Magnitude of Driver

Differential Output Voltage for

Complementary Output States

V

3

VOC

Driver Common-Mode Output

Voltage

UNITS

MIN

TYP

MAX

SYMBOL

PARAMETER

1