Microsemi

Integrated Products Division

11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570

Page 3

Copyright

© 2002

Rev. 1.2b, 2005-08-29

LX5250/5252

9-Line Multimode SCSI Terminator

TM

®

RECOMM END E D M AX OPERATING C ONDITIONS

LX5250/52

Parameter

Symbol

Min

Typ

Max

Units

LVD

2.9

5.25

VTerm

SE

3.5

5.25

V

Signal Line Voltage

0

5.0

V

Disconnect Input Voltage

0

V

Operating Junction Temperature

0

125

°C

ELECTRICAL CHA RACTERISTICS

Unless otherwise specified, the following specifications apply over the operating ambient temperature 0

°C

For the LX5250, DISCONNECT = L; for the LX5252, DISCONNECT = H.

LX5250/52

Parameter

Symbol

Test Conditions

Min

Typ

Max

Units

LVD Terminator Section

All term lines open

35

45

mA

VTerm Supply Current

LX5250: DISCONNECT > 2.0V;

LX5252:

15

35

µA

Common Mode Voltage

1.125 1.25 1.375

V

Offset Voltage

Open circuit between (-) and (+) terminals

100

112

125

mV

Differential Terminator Impedance

100

105

110

Ω

Common Mode Impedance

0.5V to 2V

110

150

195

Ω

Output Capacitance (Note 1)

LX5250: DISCONNECT > 2.0V;

LX5252:

3

pF

Mode Change Delay

Diffsense = 1.4V to 0V

100

115

300

ms

Diffsense Section

Diffsense Output Voltage

1.2

1.3

1.4

V

Diffsense Output Source Current

5

15

mA

Diffsense Sink Current

20

200

µA

Single Ended Section

All tem lines = Open, Master/Slave = 0V

55

75

mA

All tem lines = 0.2V, Master/Slave = 0V

250

290

mA

VTerm Supply Current

LX5250: DISCONNECT > 2.0V;

LX5252:

DISCONNECT < 0.8V

15

35

µA

Termination Output High Voltage

2.5

2.85

3.1

V

Output Current

18.5

22.5

24

mA

Sink Current

40

65

mA

Output Capacitance (Note 1)

DISC > 2.0V

3

pF

LX5250: DISCONNECT > 2.0V;

LX5252: DISCONNECT < 0.8V,

2

µA

Output Leakage

LX5250: DISCONNECT > 2.0V;

LX5252:

DISCONNECT < 0.8V,

1

µA

Ground Driver Impedance

I = 1mA

100

Ω