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TLK1221

www.ti.com....................................................................................................................................... SLLS713C – FEBRUARY 2007 – REVISED SEPTEMBER 2009

ETHERNET TRANSCEIVER

Check for Samples: TLK1221

1

FEATURES

23

•

0.6- to 1.3-Gigabits Per Second (Gbps)

Serializer/Deserializer

•

Low Power Consumption 250 mW (typ) at 1.25

Gbps

•

LVPECL-Compatible Differential I/O on

High-Speed Interface

•

Single Monolithic PLL Design

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Support For 10-Bit Interface

•

Fast Relock Times Less Than 256 ns (typ)

Suitable for EPON/GEPON Applications such

as OLT and ONU Systems

•

Receiver Differential-Input Thresholds, 200-mV

Minimum

•

Industrial Temperature Range From –40°C to

85°C

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IEEE 802.3 Gigabit Ethernet Compliant

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Designed in 0.25

μm CMOS Technology

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No External Filter Capacitors Required

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Comprehensive Suite of Built-In Testability

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2.5-V Supply Voltage for Lowest-Power

Operation

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3.3-V Tolerant on LVTTL Inputs

•

Hot Plug Protection

•

40-Pin 6-mm × 6-mm QFN PowerPAD™

Package

DESCRIPTION

The TLK1221 gigabit Ethernet transceiver provides for high-speed full-duplex point-to-point data transmissions.

These devices are based on the timing requirements of the 10-bit interface specification by the IEEE 802.3

Gigabit Ethernet specification. The TLK1221 supports data rates from 0.6 Gbps through 1.3 Gbps.

The primary application of these devices is to provide building blocks for point-to-point baseband data

transmission over controlled-impedance media of 50

Ω. The transmission media can be printed-circuit board

traces, copper cables or fiber-optical media. The ultimate rate and distance of data transfer is dependent upon

the attenuation characteristics of the media and the noise coupling to the environment.

The TLK1221 performs the data serialization, deserialization, and clock extraction functions for a physical layer

interface device. The transceiver operates at 1.25 Gbps (typical), providing up to 1 Gbps of data bandwidth over

a copper or optical media interface.

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2

PowerPAD is a trademark of Texas Instruments.

3

All other trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright © 2007–2009, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.