DS26303G-120 MAXIM [Maxim Integrated Products], DS26303G-120 Datasheet

DS26303G-120

Manufacturer Part Number

DS26303G-120

Description

3.3V, E1/T1/J1, Short-Haul, Octal Line Interface Unit

Manufacturer

MAXIM [Maxim Integrated Products]

Datasheet

1.DS26303G-120.pdf (97 pages)

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Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device

may be simultaneously available through various sales channels. For information about device errata, click here: www.maxim-ic.com/errata.

GENERAL DESCRIPTION

The DS26303 is an 8-channel short-haul line

interface unit (LIU) that supports E1/T1/J1 from a

single 3.3V power supply. A wide variety of

applications

termination or external termination. A single bill of

material can support E1/T1/J1 with minimum external

components. Redundancy is supported through

nonintrusive monitoring, optimal high-impedance

modes, and configurable 1:1 or 1+1 backup

enhancements. An on-chip synthesizer generates the

E1/T1/J1 clock rates by a single master clock input of

various frequencies. Two clock output references are

also offered.

APPLICATIONS

T1 Digital Cross-Connects

ATM and Frame Relay Equipment

Wireless Base Stations

ISDN Primary Rate Interface

E1/T1/J1 Multiplexer and Channel Banks

E1/T1/J1 LAN/WAN Routers

FUNCTIONAL DIAGRAM

www.maxim-ic.com

RTIP

RRING

TTTIP

TRING

Jtag

Transmitter

are

Receiver

Hardware Control

Software Control,

and JTAG

supported

through

DS26303

MODESEL

RPOS

RNEG

RCLK

TPOS

TNEG

TCLK

RLOS

internal

1 of 97

FEATURES

ORDERING INFORMATION

DS26303G-XXX*

DS26303GN-XXX*

DS26303L-XXX

DS26303L-XXX+

DS26303LN-XXX

DS26303LN-XXX+

Note: When XXX is 075, the part defaults to 75W impedance in E1

mode; when XXX is 120, the part defaults to 120W impedance.

+ Denotes a lead-free/ROHS-compliant device.

* Future product—contact factory for availability.

3.3V, E1/T1/J1, Short-Haul,

8 Complete E1, T1, or J1 Short Haul Line

Interface Units

Independent E1, T1, or J1 Selections

Internal Software-Selectable Transmit and

Receive-Side Termination

Crystal-Less Jitter Attenuator

Selectable Single-Rail and Dual-Rail Mode and

AMI or HDB3/ B8ZS Line Encoding and

Decoding

Detection and Generation of AIS

Digital/Analog Loss-of-Signal Detection as per

T1.231, G.775, and ETSI 300233

External Master Clock can be Multiple of

2.048MHz or 1.544MHz for T1/J1 or E1

Operation; This Clock will be Internally Adapted

for T1 or E1 Use

Built-In BERT Tester for Diagnostics

8-Bit Parallel Interface Support for Intel or

Motorola Mode or a 4-Wire Serial Interface

Hardware Mode Interface Support

Transmit Short-Circuit Protection

G.772 Nonintrusive Monitoring

Specification Compliance to the Latest T1 and

E1 Standards—ANSI T1.102, AT&T Pub 62411,

T1.231, T1.403, ITU G.703, G.742, G.775,

G.823, ETSI 300 166, and ETSI 300 233

Single 3.3V Supply with 5V Tolerant I/O

JTAG Boundary Scan as per IEEE 1149.1

160-Pin PBGA/144-Pin

Octal Line Interface Unit

PART

-40°C to +85°C

TEMP RANGE

0°C to +70°C

eLQFP

Package

DS26303

PIN-PACKAGE

160 PBGA

144 eLQFP

REV 072205

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