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Analog Devices Inc./Maxim Integrated DS2153QN-A7/T&R
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- Part No.:
- DS2153QN-A7/T&R
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Telecom
- Package:
- 44-LCC (J-Lead)
- Datasheet:
-
DS2153QN-A7/T&R.pdf
- Description:
- IC TXRX E1 1-CHIP 5V IND 44-PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:500
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Product details
Overview
DS2153QN-A7/T&R from Maxim Integrated is an E1 single-chip transceiver (SCT) implementing full CEPT PCM-30/ISDN-PRI line interface, clock/data recovery, and framing for 2.048MHz E1 systems. It supports FAS/CAS/CRC4 framing, 32-bit or 128-bit jitter attenuation, and dual elastic store slip buffers for backplane synchronization up to 8.192MHz - deployed in telecom access multiplexers and ISDN-PRI gateways.
For engineers reviewing the DS2153QN-A7/T&R datasheet, DS2153QN-A7/T&R pinout, DS2153QN-A7/T&R application, or DS2153QN-A7/T&R equivalent, key selection criteria include E1 line interface compliance (ITU G.703/G.704), programmable LBO for 75Ω/120Ω lines, independent transmit/receive clock domains, Sa/Si bit access, and 44-pin PLCC packaging with -40°C to +85°C industrial temperature range.
Technical Context
The DS2153QN-A7/T&R integrates a complete E1 physical layer transceiver with on-chip AMI/HDB3 clock/data recovery, G.703-compliant waveshaping, and framer logic that locates frame/multiframe boundaries per ITU G.706. Its dual two-frame elastic stores absorb phase/frequency misalignment between recovered E1 data and asynchronous backplane clocks (1.544MHz or 2.048MHz at SYSCLK).
It features fully independent transmit and receive paths: RCLK (2.048MHz recovered) and TCLK (2.048MHz primary) operate separately; signaling extraction/insertion (CAS, Si, Sa bits) is configurable via 71 internal registers; and three loopback modes (local, remote, framer) support in-system diagnostics without external hardware.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| E1 Data Rate | 2.048Mbps - matches standard E1 line rate; enables direct connection to CEPT PCM-30 infrastructure. |
| Operating Temperature | -40°C to +85°C - qualified for industrial telecom equipment deployed in uncontrolled environments. |
| Jitter Attenuation | 32-bit or 128-bit selectable - suppresses incoming jitter per ITU G.823; placement configurable in TX or RX path. |
| Line Build-Out (LBO) | Programmable for 75Ω and 120Ω lines - eliminates need for external transformer tuning across cable types. |
| Framing Support | FAS, CAS, CRC4 - satisfies ITU G.704 multiframe alignment and error detection requirements. |
| Elastic Store Depth | Dual two-frame buffers - accommodates up to ±1.5ppm frequency offset between E1 and backplane clocks (≤8.192MHz). |
| Supply Voltage | 5V ±5% - single-rail CMOS operation compatible with legacy telecom power architectures. |
Pinout & Package
DS2153QN-A7/T&R is housed in a 44-pin Plastic Leaded Chip Carrier (PLCC) package, lead-free/RoHS-compliant, with gull-wing leads and 1.27mm pitch. The package supports reflow soldering and provides mechanical robustness for industrial board-level assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RTIP / RRING | Analog Receive Inputs | Transformer-coupled AMI/HDB3 E1 signal inputs; drive internal clock/data recovery circuitry. |
| TTIP / TRING | Analog Transmit Outputs | G.703-compliant waveshaped outputs driving 75Ω or 120Ω lines via step-up transformer. |
| RCLK / TCLK | Recovered & Primary Clocks | RCLK = 2.048MHz recovered from line; TCLK = 2.048MHz system reference - fully independent timing domains. |
| RLINK / TLINK | Serial Data I/O | RLINK outputs full receive stream including Sa bits; TLINK accepts Sa-bit insertion data on falling TCLK edge. |
| AD0–AD7 | Multiplexed Address/Data Bus | 8-bit bidirectional bus supporting Intel/Motorola timing (BTS-strapped); reduces microcontroller pin count. |
| RCHBLK / TCHBLK | Channel Block Outputs | Programmable per-channel enable/disable signals - essential for fractional E1 (H0/H12) and drop-insert applications. |
Key Features
| Feature | Design Value |
|---|---|
| On-board Line Interface | Integrates clock/data recovery, waveshaping, and LBO generation - eliminates discrete analog front-end components and calibration. |
| Dual Elastic Stores | Two independent two-frame buffers synchronize E1 data to asynchronous backplanes up to 8.192MHz - enables flexible system clock architecture. |
| Full Sa/Si Bit Access | Direct read/write of international (Si) and additional (Sa) signaling bits via parallel port - supports CAS, CCS, and proprietary signaling protocols. |
| Three Loopback Modes | Local (digital TX→RX), remote (analog line echo), and framer (internal digital loop) - enables layered validation without test equipment. |
| Programmable Output Clocks | Generates fractional E1, H0 (384kbps), and H12 (1920kbps) clocks - simplifies multi-service access node design. |
Applications
| E1 Access Multiplexer | ISDN-PRI Gateway |
|---|---|
Use Scenario: Aggregating multiple E1 lines into higher-capacity SDH/SONET or IP transport links in central office or remote cabinet environments. IC Role / Device Role / Timing Role: E1 physical layer transceiver handling line termination, framing, clock recovery, and Sa/Si signaling extraction for channelized traffic. Use Value: Single-chip integration reduces BOM cost and PCB area; jitter attenuation ensures clean clock delivery to downstream framer/mapper ICs. | Use Scenario: Connecting PBX systems to PSTN via ISDN Primary Rate Interface using 30B+D configuration over E1 lines. IC Role / Device Role / Timing Role: Full E1 transceiver providing CAS signaling, FAS/CRC4 framing, and elastic store synchronization to PBX backplane clocks. Use Value: Direct support for CAS and CRC4 formats meets ETSI 300 011/300 233 compliance; programmable LBO adapts to varying line impedances. |
| Fractional E1 Terminal Adapter | Telecom Network Monitoring Probe |
Use Scenario: Delivering subrate services (e.g., 384kbps H0, 1920kbps H12) over shared E1 infrastructure in enterprise or mobile backhaul. IC Role / Device Role / Timing Role: E1 transceiver with channel blocking (RCHBLK/TCHBLK) and programmable output clocks enabling precise bandwidth allocation. Use Value: Hardware-based channel blocking avoids software overhead; independent TX/RX paths allow simultaneous monitoring and injection. | Use Scenario: In-line passive monitoring of E1 traffic for performance metrics (BPV, CRC4 errors, FAS loss) and alarm detection (AIS, RAI). IC Role / Device Role / Timing Role: E1 line interface with built-in error counters (BPV, CRC4, E-bit, FAS), AIS/RAI detection, and interrupt outputs (INT1/INT2). Use Value: Real-time error accumulation and alarm flagging enable automated SLA reporting without host CPU polling overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar E1 transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DS2155Q | Higher integration: includes integrated T1/E1 framer + HDLC controller; requires external line interface for E1. | Targeted at systems needing protocol processing (e.g., LAPD, PPP) alongside physical layer; not a drop-in replacement. | Select DS2155Q only if HDLC framing or T1 support is required; DS2153QN-A7/T&R remains optimal for pure E1 line interface. |
| MC2155P | Functionally similar E1 transceiver but with different register map, pinout, and no elastic store; operates at 3.3V. | Lacks dual elastic stores and Sa/Si bit flexibility; limited to simpler backplane sync scenarios. | Choose MC2155P only for cost-sensitive designs where elastic store and full signaling control are unnecessary. |
Compared with DS2153QN-A7/T&R, DS2155Q adds protocol processing but increases complexity and cost, while MC2155P sacrifices elastic store capability and voltage compatibility - making DS2153QN-A7/T&R the balanced choice for industrial E1 line termination requiring jitter control, flexible framing, and wide temperature operation.
Availability
DS2153QN-A7/T&R is available at Aetrix Electronics and suitable for E1 access multiplexers, ISDN-PRI gateways, fractional E1 terminal adapters, telecom network monitoring probes, and industrial telecom infrastructure requiring stable component supply across extended temperature ranges.
Supply support for DS2153QN-A7/T&R includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Maxim Integrated (now part of Analog Devices) is a semiconductor company specializing in high-performance analog, mixed-signal, and RF solutions for communications, computing, and industrial markets.
The DS2153QN-A7/T&R belongs to Maxim's telecom line interface product line, designed specifically for CEPT E1 physical layer termination in carrier-grade and industrial access equipment.
FAQ
What is the operating temperature range of the DS2153QN-A7/T&R?
The DS2153QN-A7/T&R is rated for industrial operation from -40°C to +85°C. This extended range ensures reliable performance in telecom cabinets, outdoor base stations, and industrial control systems where ambient temperatures exceed commercial limits. The device maintains full E1 functionality - including clock recovery, framing, and jitter attenuation - across this entire range, as verified in Maxim's DC/AC characterization tests.
Does the DS2153QN-A7/T&R support both 75Ω and 120Ω E1 line impedances?
Yes, the DS2153QN-A7/T&R supports both 75Ω and 120Ω line impedances through programmable Line Build-Out (LBO) settings in the Line Interface Control Register (LICR). The device generates appropriate waveshapes per ITU G.703 and automatically adjusts drive strength - eliminating manual transformer selection or external impedance matching networks in multi-deployment systems.
How does the elastic store function in the DS2153QN-A7/T&R improve system timing design?
The DS2153QN-A7/T&R implements dual two-frame elastic stores that absorb phase and frequency differences between the recovered E1 data stream and an asynchronous backplane clock (up to 8.192MHz). This allows designers to use a single system clock domain across multiple E1 ports without requiring precise clock alignment - reducing jitter accumulation and simplifying clock tree design in access multiplexers and gateways.
Can the DS2153QN-A7/T&R be used in Fractional E1 applications like H0 (384kbps) or H12 (1920kbps)?
Yes, the DS2153QN-A7/T&R supports Fractional E1 via its programmable RCHBLK and TCHBLK outputs, which can disable specific time slots, and its fractional clock generators for H0 and H12 rates. These features enable precise bandwidth allocation in enterprise and mobile backhaul applications - all without modifying the core E1 transceiver functionality or requiring external clock dividers.
Is the DS2153QN-A7/T&R pin-compatible with other Maxim E1 transceivers?
The DS2153QN-A7/T&R is pin-compatible with the DS2151Q T1 single-chip transceiver in 44-pin PLCC packaging, enabling shared PCB layouts across T1/E1 platforms. However, it is not pin-compatible with DS2155Q or MC2155P due to differing register maps, signal assignments (e.g., SYSCLK usage), and functional blocks - requiring layout revision for those alternatives.
DS2153QN-A7/T&R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 44-LCC (J-Lead)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Function:
- Single-Chip Transceiver
- Interface:
- E1
- Number of Circuits:
- 1
- Voltage - Supply:
- 4.8V ~ 5.25V
- Current - Supply:
- 65mA
- Power (Watts):
- -
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 44-PLCC (16.59x16.59)
DS2153QN-A7/T&R FAQ
1.How can I place an order for DS2153QN-A7/T&R through Aetrix?
Please submit a Request for Quotation (RFQ) for DS2153QN-A7/T&R on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for DS2153QN-A7/T&R reliable?
The price and inventory of DS2153QN-A7/T&R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS2153QN-A7/T&R is usually 5 days.
3.What payment methods are accepted for DS2153QN-A7/T&R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS2153QN-A7/T&R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS2153QN-A7/T&R?
DS2153QN-A7/T&R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS2153QN-A7/T&R order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for DS2153QN-A7/T&R?
For technical support, including DS2153QN-A7/T&R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS2153QN-A7/T&R requirements.
6.How does Aetrix verify that DS2153QN-A7/T&R is sourced from the original manufacturer or authorized distributors?
All DS2153QN-A7/T&R products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that DS2153QN-A7/T&R meets industry standards.
7.What is the process for return or replacement of DS2153QN-A7/T&R?
All DS2153QN-A7/T&R units undergo pre-shipment inspection (PSI). If there is an issue with DS2153QN-A7/T&R, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The DS2153QN-A7/T&R part is unused and in its original packaging.
Return procedure for DS2153QN-A7/T&R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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