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IDT Introduces Family of High-Density T1/J1/E1 Line Interface Units Optimized for Optical Transport Applications

New Family of 28-, 21- and 16-Channel Devices Enhance System Functionality While Slashing Board Space and Power

San Jose, Calif., June 29, 2005 IDT™ (Integrated Device Technology, Inc.; NASDAQ:  IDTI), a leading communications IC company, today bolstered its leadership in the T1/E1/J1 market with the introduction of a new family of high-density line interface units (LIUs).  The family, which includes 28-, 21- and 16-channel options in ultra-small packages, provides an optimized set of solutions for tributary aggregation in applications such as multi-service provisioning platforms (MSPPs), optical multiplexers, edge routers and wireless transport systems.  These products are the latest addition to the company’s strong portfolio of telecom solutions, which includes industry-leading T1/E1/J1 transceivers, LIU and framer products, Inverse Multiplexer over ATM (IMA) devices, Stratum compliant WAN PLLs and time slot interchange (TSI) switches.

IDT LIU solutions have achieved prodigious success with top vendors in the metro optical transport market, and today we’re giving our customers a powerful new set of products to enhance the next generation of these systems. Multi-service provisioning platforms are a great example of this,” said Sean Fan, director of marketing for the telecommunications products division at IDT. “By integrating up to 28 ports with software impedance matching, termination components and frequency synthesizers, the IDT high-density LIUs reduce power, board space and cost - three crucial considerations in these compact systems. Moreover, key features such as per-channel control of T1, E1 or J1 formatting and in-service testing translate into system-level functionality that ultimately benefits our customers’ customers.”

Innovative Cost and Board Space Benefits
The new family includes 28-, 21- and 16-port devices and offers nearly four times the density of other LIU solutions on a single chip, saving at least 20 percent in board space.  The high-density LIU devices also offer very flexible line and system interface configuration options to address a wide range of applications.  An industry-standard system interface ensures support for both commercial and custom framing and mapping circuits with standard TDM interfaces.

Each channel of the high-density LIU can be selected to operate independently in T1, J1 or E1 (75/120 ohm) mode.  Fully integrated and software-programmable internal impedance circuits enable designers to save external components and address multiple markets with a single bill of materials.  The new IDT devices also offer various line termination configuration options, including the industry’s first true single-ended termination for E1 applications on the primary and secondary side of the transformer.  Up to 63 valuable backplane traces can be saved when routing lines from the I/O panel to the LIU.  IDT has also pioneered an innovative transformer-less operation and single-ended termination mode for differential T1/J1 and E1 lines to provide additional space and cost savings in intra-building applications.

The new LIU devices deliver an optimized architecture to support 1+1 and 1:1 hitless protection switching without external relays, thereby enabling redundancy in high-availability systems.  Other features include the provision of two output clocks derived from any of the recovered line clocks.  An integrated clock synthesizer is available as an option to scale these clocks to a wide range of frequencies from 8 kHz to 32.768 MHz.  A cascading feature is also provided to select a single reference clock from multiple devices without the need for any external logic.

The IDT high-density LIU devicesensure standards compliance by meeting or exceeding popular networking specifications by ANSI, ITU, ETSI and AT&T.  Dedicated monitor channels that meet the ITU G.772 requirements for in-service monitoring are available on every device option (i.e. 28(+1), 21(+1), 16(+1) channel).

Pricing and Availability
The IDT high-density LIU devices are currently sampling with production quantities available in July. Pricing forthe new high-density LIU family ranges from $28.00 to $45.00 each in high-volume OEM quantities.  IDT Green and RoHS compliant versions will be available in Q4CY05.  Additional product information can be found on the IDT Web site at http://www.idt.com/?id=28.

Part # Ordering Code

Technical Specifications

Package Type

Production Available

Price/Qty. at 10k Units

82P2828BH

28 (+1) channel

High-density LIU

Short Haul

T1/E1/J1

640-pin Thermally enhanced plastic BGA

July 2005

$45.00

82P2821BH

21 (+1) channel

High-density LIU

Short Haul

T1/E1/J1

640-pin Thermally enhanced plastic BGA

July 2005

$34.50

82P2816BB

16 (+1) channel

High-density LIU

Short Haul

T1/E1/J1

416-pin Plastic BGA

July 2005

$28.00

IDT Telecom Products
IDT offers a broad telecommunications semiconductor portfolio, including products for access and transport, TDM switching and voice processing. IDT provides the industry’s leading portfolio of T1/E1/J1 transceiver, LIU and framer products, Inverse Multiplexing over ATM devices, highest performance stratum compliant WAN PLLs, and the widest selection of time slot interchange switches. These telecom products are used in a variety of communications applications, including multi-service aggregators and provisioning platforms, wireless base stations, enterprise routers and media gateways that are critical to enabling and accelerating the convergence of voice and data networks.