5

Rev N 9/15/2006

SP3080E Advanced RS485 Transceiver

© Copyright 2006 Sipex Corporation

ELECTRICAL CHARACTERISTICS

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Digital Input Signals: DI, DE, RE

Logic input thresholds

2.0

V

0.8

Logic Input Current

Note 4

±1

µA

Input Hysteresis

100

mV

Driver

No Load

V

Differential Driver Output, Test 1

2

V

1.5

2.4

Differential Driver Output, Test 2

1.5

Change in Magnitude of Differential Output

±0.2

V

-1

3

V

±0.2

V

Driver Short Circuit Current Limit

±250

mA

Output Leakage Current (Full-duplex versions, Y

& Z pins)

DE=0,

125

µA

RE=0,

5.5V

-100

Receiver

Receiver Input Resistance

96

KΩ

Input Current (A, B pins)

DE=0,

5.5V

125

-100

µA

-200

-110

-40

mV

Receiver Input Hysteresis

25

mV

Receiver

Output

Voltage

Figure 2

V

Figure 2

0.4

High-Z Receiver Output Current

± 1

µA

Receiver Output Short Circuit Current

± 95

mA

Supply and Protection

Supply

Current

IQ, Active Mode

300

900

µA

Shutdown Mode, Note 3

0.650

1

µA

Notes:

1. Change in Magnitude of Differential Output Voltage and Change in Magnitude of Common Mode Output Voltage are the changes in output voltage

when DI input changes state.

3. The transceivers are put into shutdown by bringing RE high and DE low. If the inputs are in this state for less than 50ns the device does not enter

shutdown. If the enable inputs are held in this state for at least 600ns the device will be in shutdown. In this low power mode most circuitry is disabled

and supply current is typically 650nA.

4.Hot-swap circuit adds pull-down resistance to first DE or RE transition.