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Revision 4.2

July 29, 2005

Confidential

VSC7177

Data Sheet

DC Characteristics

Specifications are guaranteed over the recommended operating conditions listed in Table 15, page 18.

Table 9. LVTTL Inputs and Outputs

Symbol

Parameter

Minimum

Typical

Maximum

Unit

Condition

Output HIGH voltage

2.0

2.2

Output LOW voltage

0.0

0.2

0.4

V

Input HIGH voltage

2.0

V

Input LOW voltage

0.0

0.8

V

Input current (includes a weak pull-up

resistor)

–200

+50

Table 10. High-Speed Inputs and Outputs

Symbol

Parameter

Minimum

Typical

Maximum

Unit

Condition

Input threshold voltage for OOB detection

200

mV

See Table 7.

High-speed output common-mode voltage

2.0

V

Normal Swing mode.

100

Ω termination

between true and

complement outputs.

1.7

V

High Swing mode.

100

Ω termination

between true and

complement outputs.

High-speed input common-mode voltage

1.5

V

Differential input impedance

85

100

115

Ω

Table 11. Power Supply Requirements for Sideband Operating Mode

Symbol

Parameter

Minimum

Typical

Maximum

Unit

Condition

Power supply voltage

3.0

3.3

3.6

V

±10% on all supplies

Power supply current (total on all supply

pins)

150

170

mA

Normal Swing mode

200

235

mA

High Swing mode

Total power dissipation

540

625

mW

Normal Swing mode

720

850

mW

High Swing mode