AM79C873 datasheet(32/44 Pages) AMD

32 / 44 page

Am79C873

PRELIMINARY

MII TTL Outputs

(RXD0-3, RX_EN, RX_DV, RX_ER, CRS, COL, MDIO)

VOL

Output Low Voltage

IOL = 4 mA

0.4

VOH

Output High Voltage

IOH = -4 mA

2.4

Non-MII TTL Outputs

(TXLED, RXLED, LINKLED, COLLED, FDXLED, RX_LOCK)

VOL

Output Low Voltage

IOL = 1 mA

0.4

VOH

Output High Voltage

IOH = -0.1 mA

2.4

VICM

RXI+/RXI- Input Common-Mode Voltage

100

Ω Termination Across

1.5

2.0

2.5

Twisted Pair Transmitter

ITD100

100TX+± 100BASE-TX Mode

Differential Output Current

ITD10

10TX± 10BASE-T Differential Output

Current

PECL Receiver

VIH - VCC PECL Receiver Voltage - High

-1.16

-0.90

VIL - VCC PECL Receiver Voltage - Low

-1.81

-1.48

PECL Signal Detect

VIH - VCC PECL Signal Detect Voltage - High

-1.16

-0.90

VIL - VCC PECL Signal Detect Voltage - Low

-1.81

-1.48

PECL Transmitter

VOH -

VCC

PECL Output Voltage - High

-1.05

-0.88

VOL -

VCC

PECL Output Voltage - Low

-1.85

-1.60

DC ELECTRICAL CHARACTERISTICS

(VCC = 5 VDC, ±5%, TA = 0 to 70, unless speciﬁed otherwise) (Continued)

Symbol

Parameter

Conditions

Min

Typical

Max

Unit

AC ELECTRICAL CHARACTERISTICS

(Over full range of operating conditions unless speciﬁed otherwise)

Symbol

Parameter

Conditions

Min

Typical

Max

Unit

Transmitter

tTR/F

100TXO+/- Differential Rise/Fall Time

3.0

5.0

tTM

100TXO+/- Differential Rise/Fall Time

Mismatch

-0.5

0.5

tTDC

100TXO+/- Differential Output Duty

Cycle Distortion

-0.5

0.5

tT/T

100TXO+/- Differential Output Peak-to-

Peak Jitter

300

XOST

100TXO+/- Differential Voltage

Overshoot

AM79C873 Datasheet(PDF) 32 Page - Advanced Micro Devices

AM79C873 Datasheet(HTML) 32 Page - Advanced Micro Devices

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