My Inquiry
My Account
Analog Devices Inc./Maxim Integrated DS2153Q-A7
.jpg)
- Part No.:
- DS2153Q-A7
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Telecom
- Package:
- 44-LCC (J-Lead)
- Datasheet:
-
DS2153Q-A7.pdf
- Description:
- IC TXRX E1 1-CHIP 5V 44-PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:230
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
DS2153Q-A7 from Maxim Integrated is an E1 single-chip transceiver (SCT) implementing full CEPT PCM-30 and ISDN-PRI line interface functionality. It integrates clock/data recovery, 32-bit or 128-bit jitter attenuation, G.703-compliant waveshaping for 75Ω/120Ω lines, dual elastic store slip buffers, and parallel 8-bit control port - all in a 44-pin PLCC package operating from a 5V supply.
For engineers reviewing the DS2153Q-A7 datasheet, DS2153Q-A7 pinout, DS2153Q-A7 application, or DS2153Q-A7 equivalent, key selection considerations include E1 framing support (FAS/CAS/CRC4), independent transmit/receive clock domains, programmable Sa/Si bit handling, on-chip alarm detection (RLOS/AIS), and compatibility with Intel/Motorola bus timing protocols.
Technical Context
The DS2153Q-A7 implements a fully autonomous E1 transceiver architecture with physically separate transmit and receive data paths, each supporting independent clocking - RCLK (2.048MHz recovered) and TCLK (2.048MHz primary). Its framer performs frame/multiframe alignment per ITU-T G.704/G.706 and extracts/inserts CAS signaling and Sa/Si bits under software control via 71 internal registers.
Jitter attenuation is configurable as either 32-bit or 128-bit, selectable per path, and placed before the framer on receive or after the framer on transmit. Elastic stores enable phase/frequency tolerance between asynchronous backplane clocks (SYSCLK at 1.544MHz or 2.048MHz) and the recovered E1 stream, supporting backplane rates up to 8.192MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| E1 Line Interface | AMI/HDB3 waveform recovery and generation compliant with ITU-T G.703 for 75Ω and 120Ω twisted-pair cables up to 1.5km |
| Data Rate | 2.048Mbps E1 base rate with support for fractional E1 (H0: 384kbps, H12: 1920kbps) via channel blocking |
| Jitter Attenuation | Selectable 32-bit or 128-bit depth, configurable per transmit or receive path to meet G.823 jitter transfer requirements |
| Framing Support | FAS, CAS, and CRC4 multiframe formats with automatic sync/resync per G.706 criteria including FAS error count and CRC4 codeword validation |
| Control Interface | 8-bit multiplexed parallel port with Intel/Motorola timing selection (BTS pin), enabling microcontroller-based management of multiple E1 lines |
| Alarm Handling | Detects and generates RLOS, AIS, remote alarm, and bipolar violation alarms; flags via two open-drain interrupt outputs (INT1/INT2) |
| Power Supply | Single 5V ±5% supply for digital (DVDD), receive analog (RVDD), and transmit analog (TVDD) domains - internally tied |
Pinout & Package
DS2153Q-A7 is housed in a 44-pin Plastic Leaded Chip Carrier (PLCC) package with gull-wing leads, footprint compatible with standard 56-G4003-001 outline. The package supports surface-mount assembly and provides thermal and electrical performance suitable for industrial temperature range operation (0°C to +70°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RTIP / RRING | Analog Receive Inputs | Transformer-coupled E1 line inputs for AMI/HDB3 clock/data recovery; require 1:1 isolation transformer per G.703 |
| TTIP / TRING | Analog Transmit Outputs | Line driver outputs driving E1 cable via step-up transformer; generate G.703-compliant waveshapes for 75Ω/120Ω loads |
| RCLK / TCLK | Recovered & Primary Clocks | RCLK = 2.048MHz recovered clock; TCLK = 2.048MHz system clock - fully independent domains enabling async operation |
| RLINK / TLINK | Serial Data I/O | RLINK outputs full receive stream including Sa bits; TLINK accepts transmit data with Sa-bit insertion capability |
| RSYNC / TSYNC | Frame Sync I/O | Programmable as input or output for frame/multiframe boundary synchronization; supports CAS/CRC4 alignment modes |
| AD0–AD7 | Multiplexed Address/Data Bus | 8-bit bidirectional bus sharing address and data; latched by ALE(AS); supports Intel/Motorola timing via BTS pin |
| INT1 / INT2 | Alarm Interrupt Outputs | Active-low open-drain interrupts signaling status events (e.g., RLOS, AIS, BPV, CRC4 errors) per Status Registers 1 and 2 |
Key Features
| Feature | Design Value |
|---|---|
| On-chip Jitter Attenuation | Configurable 32-bit or 128-bit depth per path ensures compliance with G.823 jitter transfer mask for long-haul E1 links |
| Dual Elastic Store Buffers | Enables connection to asynchronous backplanes up to 8.192MHz while absorbing phase/frequency drift between E1 and system clocks |
| Full Sa/Si Bit Access | Independent control of all Sa (additional) and Si (international) bits allows implementation of proprietary signaling or protocol extensions |
| Three Test Loopbacks | Local, remote, and framer loopback modes support comprehensive in-system diagnostics without external test equipment |
| Comprehensive Error Counting | Hardware counters for BPV/code violations, CRC4 errors, FAS errors, and E-bits enable real-time link health monitoring and maintenance reporting |
| G.703 Line Build-Out (LBO) | Programmable LBO generation for both 75Ω and 120Ω lines eliminates need for external line drivers or impedance-matching components |
Applications
| ISDN-PRI Gateway | E1 Channel Bank |
|---|---|
Use Scenario: Aggregating 30 B-channels and 1 D-channel from multiple ISDN-PRI lines into a VoIP or PBX switch fabric. IC Role / Device Role / Timing Role: DS2153Q-A7 acts as the physical layer transceiver, recovering E1 frames, extracting CAS signaling, and delivering synchronized serial data to the framer/controller. Use Value: Enables direct E1-to-digital interface with no external line drivers or clock recovery ICs, reducing BOM cost and board space. |
Use Scenario: Building modular E1 multiplexers that support drop-and-insert of individual time slots across multiple E1 spans. IC Role / Device Role / Timing Role: DS2153Q-A7 serves as the line-side E1 interface, providing independent Tx/Rx clock domains and programmable TCHBLK/RCHBLK outputs for channel gating. Use Value: Allows precise per-channel blocking and timing control for fractional E1 services (H0/H12) without requiring FPGA-based logic. |
| Remote Alarm Monitoring System | Legacy Telecom Interface Card |
Use Scenario: Deploying distributed E1 monitoring units in central offices to detect and report RLOS, AIS, and remote alarms across legacy infrastructure. IC Role / Device Role / Timing Role: DS2153Q-A7 functions as autonomous alarm detector and generator, using its dual interrupt outputs (INT1/INT2) and status registers for real-time event reporting. Use Value: Provides hardware-accelerated alarm detection per ITU-T G.706, eliminating polling overhead and ensuring sub-millisecond response to critical line failures. |
Use Scenario: Retrofitting aging telecom chassis with modern, RoHS-compliant E1 interface cards supporting both FAS and CRC4 framing. IC Role / Device Role / Timing Role: DS2153Q-A7 replaces discrete framer+line-driver solutions as a pin-compatible upgrade to DS2151Q, maintaining existing PCB layout while adding jitter attenuation and elastic store features. Use Value: Delivers backward-compatible migration path with enhanced jitter performance and multiframe flexibility - no redesign required. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar E1 transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DS2151Q | Pin-compatible T1/E1 transceiver but lacks jitter attenuator, elastic stores, and CRC4 support; supports only FAS framing | Targeted at basic T1 applications or legacy E1 systems without CRC4 or jitter requirements | Choose DS2151Q only if CRC4, jitter attenuation, or multiframe elasticity are not required - DS2153Q-A7 adds those capabilities without layout change |
| SI2153-D-FM | Si2153 is a tuner IC, not an E1 transceiver - invalid comparison; no functional equivalence | N/A - incorrect category match | Avoid misapplication: SI2153-D-FM is an RF tuner for broadcast reception, incompatible with E1 line interface duties |
Compared with DS2151Q, DS2153Q-A7 delivers full CRC4 multiframe support, integrated jitter attenuation, and elastic store buffering - essential for modern E1 networks requiring G.823 compliance and interoperability with CRC4-based switches. Unlike non-transceiver alternatives, it is the only validated E1 SCT meeting ITU-T G.703/G.704/G.706 in a single 44-pin PLCC.
Availability
DS2153Q-A7 is available at Aetrix Electronics and suitable for ISDN-PRI gateways, E1 channel banks, remote alarm monitoring systems, and legacy telecom interface cards requiring stable component supply and long-term industrial availability.
Supply support for DS2153Q-A7 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 precision analog, mixed-signal, and high-reliability interface solutions for communications, industrial, and automotive markets.
The DS2153Q-A7 belongs to Maxim's telecom line interface IC product line, designed specifically for CEPT/E1 infrastructure equipment requiring full-framing, jitter management, and robust alarm handling in carrier-grade deployments.
FAQ
What is the operating temperature range for DS2153Q-A7?
The DS2153Q-A7 is specified for commercial temperature operation from 0°C to +70°C. This range aligns with standard industrial telecom interface card environments and is documented in the ordering information table of the official datasheet. DS2153Q-A7 does not support extended temperature grades - for -40°C to +85°C operation, the DS2153QN variant must be used instead.
Does DS2153Q-A7 support both FAS and CRC4 framing modes?
Yes, DS2153Q-A7 fully supports FAS, CAS, and CRC4 multiframe formats per ITU-T G.704 and G.706. Its framer automatically detects and locks to any of these structures, and the RCR1 register enables programmable resync criteria for each mode. DS2153Q-A7 is certified for CRC4 operation including 915/1000 error threshold compliance - a requirement absent in earlier variants like DS2151Q.
Can DS2153Q-A7 drive both 75Ω and 120Ω E1 lines directly?
Yes, DS2153Q-A7 integrates programmable line build-out (LBO) circuitry capable of generating G.703-compliant waveforms for both 75Ω coaxial and 120Ω twisted-pair cables. The LICR register selects LBO level, and external transformer coupling (per Figure 13-1) completes the interface - no additional line drivers or impedance-matching components are needed.
Is DS2153Q-A7 pin-compatible with other Maxim E1 transceivers?
DS2153Q-A7 is pin-compatible with the DS2151Q T1/E1 transceiver, sharing identical 44-pin PLCC pinout and parallel control interface. However, DS2153Q-A7 adds new functionality - including jitter attenuator control pins (not present in DS2151Q) - which remain unused or tri-stated when migrating from DS2151Q, ensuring backward-compatible PCB reuse.
What clock frequencies does DS2153Q-A7 require for normal operation?
DS2153Q-A7 requires three key clocks: a 2.048MHz TCLK for transmit timing, a recovered 2.048MHz RCLK from the line (or ACLKI fallback), and optionally a 1.544MHz or 2.048MHz SYSCLK when elastic stores are enabled. An 8.192MHz crystal must be connected to XTAL1/XTAL2 for internal timing generation - this is mandatory and non-optional per Section 13.4.
DS2153Q-A7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 44-LCC (J-Lead)
- Packaging:
- Bag
- Product Status:
- Obsolete
- Function:
- Single-Chip Transceiver
- Interface:
- E1
- Number of Circuits:
- 1
- Voltage - Supply:
- 4.75V ~ 5.25V
- Current - Supply:
- 65mA
- Power (Watts):
- -
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 44-PLCC (16.59x16.59)
DS2153Q-A7 FAQ
1.How can I place an order for DS2153Q-A7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DS2153Q-A7 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 DS2153Q-A7 reliable?
The price and inventory of DS2153Q-A7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS2153Q-A7 is usually 5 days.
3.What payment methods are accepted for DS2153Q-A7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS2153Q-A7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS2153Q-A7?
DS2153Q-A7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS2153Q-A7 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 DS2153Q-A7?
For technical support, including DS2153Q-A7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS2153Q-A7 requirements.
6.How does Aetrix verify that DS2153Q-A7 is sourced from the original manufacturer or authorized distributors?
All DS2153Q-A7 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 DS2153Q-A7 meets industry standards.
7.What is the process for return or replacement of DS2153Q-A7?
All DS2153Q-A7 units undergo pre-shipment inspection (PSI). If there is an issue with DS2153Q-A7, 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 DS2153Q-A7 part is unused and in its original packaging.
Return procedure for DS2153Q-A7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DS2153Q-A7 Tags
-
LMC567CMX/NOPB
Texas Instruments
-
LM567CMX/NOPB
Texas Instruments
-
LM567CM/NOPB
Texas Instruments
-
VSC8531XMW-02
Microchip Technology
-
VSC8531XMW-05
Microchip Technology
-
GPY115C0VI
MaxLinear, Inc.
-
SI32185-A-FMR
Skyworks Solutions Inc.
-
VSC8541XMV-05
Microchip Technology
-
SI32178-B-FM1R
Skyworks Solutions Inc.
-
GPY215C0VI
MaxLinear, Inc.
-
CPC7514ZTR
Littelfuse Inc.
-
VSC8502XML-03
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
