Maxim > Products > T/E Carrier and Packetized Communications > DS26503

DS26503

T1/E1/J1 BITS Element

Overview

Technical Documents

Ordering Info

Status

Active: In Production.

Description

The DS26503 is a building-integrated timing-supply (BITS) clock-recovery element. It also functions as a basic T1/E1 transceiver. The receiver portion can recover a clock from T1, E1, and 6312kHz synchronization timing interfaces. In T1 and E1 modes, the Synchronization Status Message (SSM) can also be recovered. The transmit portion can directly interface to T1 or E1 interfaces as well as source the SSM in T1 and E1 modes. The DS26503 can translate between any of the supported inbound synchronization clock rates to any supported outbound rate. A separate output is provided to source a 6312kHz clock. The device is controlled through a parallel, serial, or hardware controller port.

Data Sheet

Download	Rev 6	(PDF, 5.6MB)
E-Mail

Errata DS26503 26503B1.pdf
Errata DS26503 26503A2.pdf
Errata DS26503 26503C1.pdf

An evaluation kit is available: DS26503DK

Key Features

G.703 2048kHz Synchronization Interface Compliant
G.703 6312kHz Japanese Synchronization Interface Compliant
Interfaces to Standard T1/J1 (1.544MHz) and E1 (2.048MHz)
Interface to CMI-Coded T1/J1 and E1
Short- and Long-Haul Line Interface
Transmit and Receive T1 and E1 SSM Messages with Message Validation
T1/E1 Jitter Attenuator with Bypass Mode
Fully Independent Transmit and Receive Functionality
Internal Software-Selectable Receive- and Transmit-Side Termination for 75Ω/100Ω/110Ω/120Ω
Monitor Mode for Bridging Applications
Accepts 16.384MHz, 12.8MHz, 8.192MHz, 4.096MHz, 2.048MHz, or 1.544MHz Master Clock
8-Bit Parallel Control Port, Multiplexed or Nonmultiplexed, Intel or Motorola
Serial (SPI) Control Port
Hardware Control Mode
Provides LOS, AIS, and LOF Indications Through Hardware Output Pins
Fast Transmitter-Output Disable Through Device Pin for Protection Switching
IEEE® 1149.1 JTAG Boundary Scan
3.3V Supply with 5V-Tolerant Inputs and Outputs

Applications/Uses

Basic Transceiver
BITS Timing
Rate Conversion

Key Specifications:

T/E Carrier & Packetized Products

Part Number

Transmission Standard

Functions

Channels

In-to-Out Clocks
(MHz)

V_SUPPLY
(V)

EV Kit

Package/Pins

Smallest Available Pckg.
(mm²)

Budgetary Price

max w/pins

See Notes

DS26503

T1/E1/J1

BITS Element

1.544

2.048

6.312

3.3

Yes

LQFP/64

148.8

$11.85 @1k

See All T/E Carrier & Packetized Products (100)

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Diagram

Block Diagram

Application Notes

Application Note 324

T1/E1 Network Interface Design

Reliability Reports

Reliability Report:

DS26503.pdf

Software/Models

DS26503 BSDL Model

DS26503 IBIS Model

Ordering Information

Filters:

Part Number:

Package:

Temperature:

Tape and Reel

Sample

Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
DS26503L			Active	LQFP;64 pin;148.8 mm² Outline Drawing:21-0083 (PDF) Land Pattern: 90-0141 (PDF) Use pkgcode/variation: C64-8*	0°C to +70°C	See data sheet
DS26503L+			Active	LQFP;64 pin;148.8 mm² Outline Drawing:21-0083 (PDF) Land Pattern: 90-0141 (PDF) Use pkgcode/variation: C64+8*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS26503LN			Active	LQFP;64 pin;148.8 mm² Outline Drawing:21-0083 (PDF) Land Pattern: 90-0141 (PDF) Use pkgcode/variation: C64-8*	-40°C to +85°C	See data sheet
DS26503LN+			Active	LQFP;64 pin;148.8 mm² Outline Drawing:21-0083 (PDF) Land Pattern: 90-0141 (PDF) Use pkgcode/variation: C64+8*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis

Notes:

Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

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Evaluation Kits

DS26503DK

T1/E1/J1 BITS Element Design Kit

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