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DS26503
T1/E1/J1 BITS Element
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Status
| Part Number |
Status |
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DS26503
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Active: In Production. But some versions of the family are subject to Last Time Buy. See Ordering Information. |
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.
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Data Sheet
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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
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Applications/Uses
- Basic Transceiver
- BITS Timing
- Rate Conversion
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Key Specifications:
| T/E Carrier & Packetized Products |
| Part Number |
Transmission Standard |
Functions |
Channels |
In-to-Out Clocks
(MHz) |
VSUPPLY
(V) |
EV Kit |
Package/Pins |
Smallest Available Pckg.
(mm2) |
Budgetary Price |
| max w/pins |
See Notes |
| DS26503 |
T1/E1/J1 |
BITS Element |
1 |
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3.3 |
Yes |
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148.8 |
$11.85 @1k |
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See All T/E Carrier & Packetized Products (99)
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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.
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Diagram
Block Diagram
More Information
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Information Index
Rev 6;
2008-01-16
This page last modified: 2009-10-07
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