2

Rev. 7/10/03

SP522 Multi–Mode Serial Transceivers

© Copyright 2003 Sipex Corporation

SPECIFICATIONS

Typical @ 25°C and nominal supply voltages unless otherwise noted.

MIN.

TYP.

MAX.

UNITS

CONDITIONS

LOGIC INPUTS

V

IL

0.8

Volts

V

IH

2.0

Volts

LOGIC OUTPUTS

V

OL

0.4

Volts

I

V

OH

2.4

Volts

I

1.0mA

RS422 DRIVER

TTL Input Levels

V

IL

0

0.8

Volts

V

IH

2.0

Volts

Outputs

Differential Output

+2.0

+5.0

Volts

R=50Ω; see Figure 1

Open Circuit Voltage,V

O

+6.0

Volts

Balance

+0.4

Volts

|V

Offset

+3.0

Volts

Short Circuit Current

+150

mA

V

Power Off Current

+100

µAV

Transition Time

40

nS

Rise/fall time, 10%-90%

Max. Transmission Rate

10

Mbps

R

Propagation Delay

T

t

PHL

90

150

nS

R

t

PLH

90

150

nS

R

RS422 RECEIVER

TTL Output Levels

V

OL

0.4

Volts

V

OH

2.4

Volts

Input

High Threshold

+0.3

+6.0

Volts

(a)-(b)

Low Threshold

-6.0

-0.3

Volts

(a)-(b)

Common Mode Range

-7.0

+7.0

Volts

High Input Current

Refer to Rec. input graph

Low Input Current

Refer to Rec. input graph

Receiver Sensitivity

+0.3

Volts

V

Input Impedance

4

kΩ

Max. Transmission Rate

10

Mbps

Propagation Delay

T

t

PHL

110

175

nS

Figures 3 & 7

t

PLH

110

175

nS

Figures 3 & 7

RS485 DRIVER

TTL Input Levels

V

IL

0.8

Volts

V

IH

2.0

Volts

Outputs

Differential Output

+1.5

+5.0

Volts

R=27Ω; C

Open Circuit Voltage,V

O

+6.0

Volts

Balance

+0.2

Volts

|V

Output Current

28.0

mA

R

Short Circuit Current

+200

mA

V

Transition Time

40

nS

Rise/fall time, 10%-90%

Max. Transmission Rate

10

Mbps

R

Propagation Delay

Figures 3 & 5; T

t

PHL

100

150

nS

R

t

PLH

100

150

nS

R