DM9008F datasheet(4/68 Pages) ETC

4 / 68 page

DM9008

ISA/Plug & Play Super Ethernet Contoller

Final

Version :DM9008-DS-F02

June 14, 2000

DC Electrical Characteristics (continued)

Symbol

Parameter

Min.

Max.

Unit

Conditions

VDS

Differential Squelch Threshold (RX

and CD

±)

-175

(Note 5)

-300

VCM

Differential Input Common Mode

Voltage (RX

± and CD±) (Note 5)

05.5

Twisted Pair Interface Pins (TPTX+/TPTX-)

Vtidf

TP input voltage

.350

2.0

Vil

Vih

LI:

low

high

2.4

0.8

Note 1: These levels are tested dynamically using a limited number of functional test patterns. Refer to AC Test Load.

Note 2: The low drive CMOS compatible Voh and Vol limits are not tested directly. Detailed device characterization verifies

that this specification can be guaranteed by testing the high drive TTL compatibl e Vol and Voh specifications.

Note 3: This measurement is made while the DM9008 is undergoing transmission, reception, and collision. The value is

not measured instantaneously, but is averaged over a span of several milliseconds.

Note 4: This measurement is made while the DM9008 is sitting idle of transmission. This measurement is described in note

Note 5: This parameter is guaranteed by design and is not tested.

Note 6: Except RST, IORB, IOWB which are Schmitt trigger with Vil = 1.0V, Vih = 2.8V.

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