©

2002 IMP, Inc.

408-432-9100/www.impweb.com

3

IMP52

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Electrical Characteristics

Recommended Operating Conditions

Parameter

Symbol

Min

Typ

Max

Units

Termpwr Voltage

3.0

5.25

V

Signal Line Voltage

0

5.0

V

Disconnect Input Voltage

V

Operating Junction Temperature Range — IMP5245/5246

0

70

°C

Unless otherwise specified, these specifications apply over the operating ambient temperature range of 0

DISCONNECT: IMP5245 = LOW, IMP5246 = HIGH. Low duty cycle pulse testing techniques are used which maintains junction and case

temperatures equal to the ambient temperature.

Note:

3. Open circuit failsafe voltage.

Note:

2. Range over which the device is functional.

Parameter

Symbol Conditions

Min

Typ

Max

Units

LVD Terminator Section

TermPwr Supply Current

All term lines = Open

20

25

mA

Power Down Mode

DISCONNECT: IMP5245 = HIGH, IMP5246 = LOW

5

10

µA

Common Mode Voltage

1.125

1.25

1.375

V

Offset Voltage

Open circuit between – and + (see Note 3)

100

112

125

mV

Differential Terminator

100

105

110

Ω

Impedance

Common Mode Impedance

0V to 2.5V

100

200

300

Ω

Output Capacitance

DISCONNECT: IMP5245 = HIGH, IMP5246 = LOW

2.5

pF

Output Leakage

DISCONNECT: IMP5245 = HIGH, IMP5246 = LOW,

°C0

2

µA

DISCONNECT: IMP5245 = HIGH, IMP5246 = LOW,

1

µA

Mode Change Delay

DIFFSENSE = 1.4V to 0V

100

150

ms

DIFFSENSE Section

DIFFSENSE Output Voltage

1.2

1.3

1.4

V

DIFFSENSE Output Source

DIFFSENSE = 0V

5.0

15.0

mA

Current

DIFFSENSE Sink Current

200

µA

DIFFSENSE Output Leakage

DISCONNECT: IMP5245 = HIGH, IMP5246 = LOW,

10

µA

°C

DISCONNECT Section

DISCONNECT Threshold

0.8

2.0

V

Input Current

DISCONNECT: IMP5245 = 0V

10

µA

DISCONNECT: IMP5246 = 3.3V

10

µA