3

SP495

Quad Differential RS-485 Transceiver

© Copyright 2000 Sipex Corporation

A

B

R

R

1k

1k

Receiver

Output

Test Point

Figure 1. Driver DC Test Load Circuit

Figure 2. Receiver Timing Test Load Circuit

Operating Temperature

Commercial (_C_)

0

+70

°C

Industrial (_E_)

-40

+85

°C

Storage Temperature

-65

+150

°C

Package

Plastic LCC (_L)

SPECIFICATIONS (continued)

T

PARAMETERS

MIN.

TYP.

MAX.

UNITS

CONDITIONS

RECEIVER

DC Characteristics

Output Voltage LOW

0.4

Volts

I

Three State (high impedance)

Output Current

±0.5

10

µA

0.4V

≤ V

Input Resistance

12

15

k

Ω

-7V

≤ V

Input Current (A, B); V

±1.0

mA

DE = 0V, V

Input Current (A, B); V

-0.8

mA

DE = 0V, V

Short-Circuit Current

85

mA

0V

≤ V

RECEIVER

AC Characteristics

Maximum Data Rate

10

Mbps

DEx/ REx = 0V

Receiver Input to Output

60

200

ns

t

C

Receiver Input to Output

60

200

ns

t

C

Diff. Receiver Skew It

ns

R

Figures 3 & 8

Receiver Enable to Output LOW

45

70

ns

C

Receiver Enable to Output HIGH

45

70

ns

C

Receiver Disable from LOW

45

70

ns

C

Receiver Disable from HIGH

45

70

ns

C

POWER REQUIREMENTS

Supply Voltage

+4.75

+5.25

Volts

Supply Current

2

5

mA

DEx/ REx, DRx = 0V or V

CC

ENVIRONMENTAL AND

MECHANICAL

15pF

RO

A

B

A

B

DI

DE

3V

500

Output

Under

Test

Figure 3. Driver/Receiver Timing Test Circuit

Figure 4. Driver Timing Test Load #2 Circuit