Half-Duplex RS-485-/RS-422-Compatible

Transceiver with AutoDirection Control

2

_______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

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.

(All voltages referenced to GND.)

SHDN, RE, DI..............................................................-0.3V to +6

A, B........................................................................... -8V to +13V

Short-Circuit Duration (RO, A, B) to GND ..................Continuous

8-Pin SO (derate 5.9mW/°C above +70°C)..................471mW

Operating Temperature Range ...........................-40°C to +85°C

Junction Temperature ......................................................+150°C

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature (soldering 10s) ..................................+300°C

ELECTRICAL CHARACTERISTICS

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

DRIVER

Ω, Figure 1

2.0

Ω, Figure 1

1.5

Differential Driver Output

No load

V

Driver Common-Mode Output

Voltage

Ω or 54Ω, Figure 1

3V

Driver Disable Threshold

Figure 2 (Note 2)

+0.6

+1

V

Input-High Voltage

DI, SHDN, RE

2.0

V

Input-Low Voltage

DI, SHDN, RE

0.8

V

Input Current

DI, SHDN, RE

±1

µA

0V

+50

+250

Driver Short-Circuit Output

Current

(Note 3)

-7V

-250

-50

mA

20

mA

Driver Short-Circuit Foldback

Output Current (Note 3)

-7V

-20

RECEIVER

250

Input Current

(A and B)

= GND or +5V

-200

µA

Receiver Differential Threshold

Voltage

-7V

-200

+200

mV

Receiver Input Hysteresis

25

mV

Output-High Voltage

1.5

V

Output-Low Voltage

0.4

V

Tri-State Output Current at

Receiver

0V

±1

µA

Receiver Input Resistance

-7V

48

k

Ω

Receiver Output Short-Circuit

Current

0V

±7

±95

mA