mc34055dw Freescale Semiconductor, Inc, mc34055dw Datasheet

mc34055dw

Manufacturer Part Number

mc34055dw

Description

10base-t Transceiver

Manufacturer

Freescale Semiconductor, Inc

Datasheet

1.MC34055DW.pdf (16 pages)

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IEEE 802.3 10BASE-T

Transceiver

8802–3 [IEEE 802.3] 10BASE–T specification, will support a Medium

Dependent Interface (MDI) in an embedded Media Attachment Unit (MAU)*.

The interface supporting the Data Terminal Equipment (DTE) is TTL, CMOS,

and raised ECL compatible, and the interface to the Twisted Pair (TP) media

is supported through standard 10BASE–T filters and transformers.

Differential data intended for the TP media is provided a 50 ns pre–emphasis

and data at the TP receiver is screened by Smart Squelch circuitry for

specific threshold, pulse width, and sequence requirements.

status outputs, select mode pins for forcing Loop Back and Full–Duplex

operation, a Signal Quality Error pin for testing the collision detect circuitry

without affecting the TP output, and a LED driver for Link Integrity status. An

on–chip oscillator, capable of receiving a clock input or operating under

crystal control, is also provided for internal timing and driving a buffered

clock output.

a 24 pin SOIC.

MAXIMUM RATINGS

NOTE: Devices should not be operated at these limits. The “Recommended Operating

Conditions” table provides for actual device operation.

MOTOROLA ANALOG IC DEVICE DATA

Power Supply Voltage

Differential Voltage at RX+/RX–

Voltage Applied to Logic and Mode/Test

Voltage Applied to Logic Outputs and

Ambient Operating Temperature Range

Junction Temperature

Requirements

Transformers

Integrity

The Motorola 10BASE–T transceiver, designed to comply with the ISO

Other features of the MC34055 include: Collision and Jabber detection

The MC34055 is manufactured on a BiCMOS process and is packaged in

BiCMOS Technology for Low Power Operation

Standard 5.0 V,

Smart Squelch Enforcement of Threshold, Pulse Width, and Sequence

Driver Pre–Emphasis for Output Data

TTL, CMOS and Raised ECL Compatible

Interfaces to TP Media with Standard 10BASE–T Filters and

LED Capable Status Outputs for Collision, Jabber Detection, and Link

Directly Driven or Crystal Controlled Clock Oscillator

Selectable Full–Duplex Operation

Signal Quality Error Test Pin

Selectable Loop Back

Select Inputs

Output Status Pins

Rating

5% Voltage Supply

(T A = 25 C, unless otherwise noted.)

Symbol

V CC

V ID

T A

T J

– 5.25 to 5.25

– 0.5 to 7.0

– 0.5 to 5.5

– 0.5 to 7.0

– 65 to 150

0 to 70

Value

Unit

Vdc

MC34055DW

V CC (Dig/Ana)

Motorola, Inc. 1996

Device

RX Data A

RX Data B

TX Data A

TX Data B

Ana. Gnd

10BASE–T TRANSCEIVER

RX EN H

LNKFL H

TX EN H

Dig. Gnd

Clk Out

Loop L

ORDERING INFORMATION

MC34055

PIN CONNECTIONS

SEMICONDUCTOR

TECHNICAL DATA

Order this document by MC34055/D

PLASTIC PACKAGE

Temperature Range

T A = 0 to +70 C

DW SUFFIX

CASE 751E

(SO–24L)

Operating

SO–24L

Package

Clk+

Clk–

SQE EN L

TX+

TX–

Pwr Gnd

Pwr V CC

FULLD L

RX+

RX–

CTL H

JABB H

Rev 1

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