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DS21Q50
Quad E1 Transceiver
E1 Quad Transceiver Contains All the Functions Necessary for Connecting to Four E1 Lines
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Status
Active: In Production.
Description
The DS21Q50 E1 quad transceiver contains all the necessary functions for connecting to four E1 lines. The on-board clock/data recovery circuitry coverts the AMI/HDB3 E1 waveforms to an NRZ serial stream. The DS21Q50 automatically adjusts to E1 22AWG (0.6mm) twisted-pair cables from 0km to over 2km in length. The device can generate the necessary G.703 waveshapes for both 75Ω coax and 120Ω twisted-pair cables. The on-board jitter attenuators (selectable to either 32 bits or 128 bits) can be placed in either the transmit or receive data paths. The framers locate the frame and multiframe boundaries and monitor the data streams for alarms. The device contains a set of internal registers, from which the user can access and control the operation of the unit by the parallel control port or serial port. The device fully meets all the latest E1 specifications including ITU-T G.703, G.704, G.706, G.823, G.732, and I.431 ETS 300 011, ETS 300 233, and ETS 300 166 as well as CTR12 and CTR4.
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Data Sheet
Errata DS21Q50 21Q50A1.pdf
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Key Features
- Four Complete E1 (CEPT) PCM-30/ISDN-PRI Transceivers
- Long-Haul and Short-Haul Line Interfaces
- 32-Bit or 128-Bit Crystal-Less Jitter Attenuator
- Frames to FAS, CAS, CCS, and CRC4 Formats
- 4MHz/8MHz/16MHz Clock Synthesizer
- Flexible System Clock with Automatic Source Switching on Loss-of-Clock Source
- Two-Frame Elastic-Store Slip Buffer on the Receive Side
- Interleaving PCM Bus Operation Up to 16.384MHz
- Configurable Parallel and Serial Port Operation
- Detects and Generates Remote and AIS Alarms
- Fully Independent Transmit and Receive Functionality
- Four Separate Loopback Functions
- PRBS Generation/Detection/Error Counting
- 3.3V Low-Power CMOS
- Large Counters for Bipolar and Code Violations, CRC4 Codeword Errors, FAS Word Errors, and E Bits
- Eight Additional User-Configurable Output Pins
- 100-Pin, 14mm x 14mm LQFP Package
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Applications/Uses
- Add/Drop Multiplexers
- Automated Teller Machines
- Central Office Equipment
- Customer Premise Equipment
- DSLAMs
- IMA
- Line Cards
- PBXs
- Routers/Switches
- Routers/Switches
- Timing Systems
- WAN Interface
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Key Specifications:
| T/E Carrier & Packetized Products |
| Part Number |
Transmission Standard |
Functions |
Channels |
VSUPPLY
(V) |
Package/Pins |
Smallest Available Pckg.
(mm2) |
Budgetary Price |
| max w/pins |
See Notes |
| DS21Q50 |
E1 |
Framer + LIU |
4 |
3.3 |
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262.4 |
$53.56 @1k |
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See All T/E Carrier & Packetized Products (100)
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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
Application Notes
Product Guides
Reliability Reports
Software/Models
Ordering Information
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Part Number
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Free
Sample |
Buy |
Status
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Package:
TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
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Temp |
RoHS/Lead-Free?
Materials Analysis
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| DS21Q50L
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Active |
LQFP;100 pin;262.4 mm²
Outline Drawing:21-0297 (PDF)
Land Pattern: 90-0295 (PDF)
Use pkgcode/variation: C100L-4*
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0°C to +70°C
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RoHS/Lead-Free: No
Materials Analysis |
| DS21Q50L+
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Active |
LQFP;100 pin;262.4 mm²
Outline Drawing:21-0297 (PDF)
Land Pattern: 90-0295 (PDF)
Use pkgcode/variation: C100L+4*
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0°C to +70°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| DS21Q50LN
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Active |
LQFP;100 pin;262.4 mm²
Outline Drawing:21-0297 (PDF)
Land Pattern: 90-0295 (PDF)
Use pkgcode/variation: C100L-4*
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-40°C to +85°C
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RoHS/Lead-Free: No
Materials Analysis |
| DS21Q50LN+
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Active |
LQFP;100 pin;262.4 mm²
Outline Drawing:21-0297 (PDF)
Land Pattern: 90-0295 (PDF)
Use pkgcode/variation: C100L+4*
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-40°C to +85°C
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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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Information Index
Document Ref.: 051401
Rev 1;
2004-01-30
This page last modified: 2009-10-15
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