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Analog Devices Inc./Maxim Integrated DS3154NCA2
- Part No.:
- DS3154NCA2
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Telecom
- Package:
- 144-BGA, CSPBGA
- Datasheet:
-
DS3154NCA2.pdf
- Description:
- DS3154 QUAD DS3/E3/STS-1 LIU
- Quantity:
- Payment:
- Shipping:
Inventory:4,504
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Product details
Overview
DS3154NCA2 from Maxim Integrated (now part of Analog Devices) is a quad-channel line interface unit (LIU) for DS3 (44.736 Mbps), E3 (34.368 Mbps), and STS-1 (51.840 Mbps) physical-layer interfacing. It integrates four independent receive/transmit paths with built-in jitter attenuators, supports hardware or CPU bus configuration, and operates over 75Ω coaxial cable up to 380m (DS3), 440m (E3), or 360m (STS-1). Used in SONET/SDH multiplexers and DSLAMs.
For engineers reviewing the DS3154NCA2 datasheet, DS3154NCA2 pinout, DS3154NCA2 application, or DS3154NCA2 equivalent, this page delivers verified technical context, pin-level circuit roles, real-world deployment constraints, and validated alternative options - all grounded in Maxim's official DS315x family documentation and ordering data.
Technical Context
The DS3154NCA2 implements four fully independent LIU channels, each with separate AGC/equalizer-based receiver front-end supporting 0–15 dB cable loss compensation, B3ZS/HDB3 decoding, and dual-mode (binary/bipolar) framer interface. Each channel includes clock/data recovery, programmable jitter attenuation placement (receive or transmit path), and tri-state output drivers for protection switching.
It supports two operational modes: hardware mode (pin-strapped configuration) and CPU bus mode (8-bit microprocessor interface with register access, interrupt support, and glueless Motorola/Intel timing). Master clocks include T3MCLK (44.736 MHz ±20 ppm), E3MCLK (34.368 MHz ±20 ppm), and STMCLK (51.840 MHz ±20 ppm), all referenced to IEEE 1149.1 JTAG-compliant boundary scan.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Number of LIUs | 4 independent DS3/E3/STS-1 line interface channels |
| Data Rates | DS3: 44.736 Mbps; E3: 34.368 Mbps; STS-1: 51.840 Mbps - each channel configurable per standard |
| Jitter Attenuation | Configurable per channel in either receive or transmit path - not both simultaneously; no shared resource conflict |
| Cable Drive Distance | Up to 380m on DS3, 440m on E3, 360m on STS-1 using 75Ω coax and 1:2 transformers |
| Supply Voltage | 3.3V core operation with 5V-tolerant I/O - enables direct interfacing to legacy 5V logic without level shifters |
| Temperature Range | –40°C to +85°C industrial grade - validated for telecom equipment deployed in uncontrolled environments |
| Package | 144-pin thermally enhanced CSBGA (13mm × 13mm) - requires thermal pad under die for θJA ≤ 25°C/W |
Pinout & Package
DS3154NCA2 uses a 144-pin thermally enhanced chip-scale ball grid array (TE-CSBGA) package measuring 13mm × 13mm with exposed thermal pad. Pin assignments follow DS3154-specific layout (Figure 14-7 and 14-8), supporting both hardware and CPU bus modes via shared pins with mode-dependent functionality.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RXP1–RXP4 / RXN1–RXN4 | Differential analog receiver inputs | Accept AMI-encoded signals from 75Ω coax; require external 1:2 step-up transformer per channel |
| TXP1–TXP4 / TXN1–TXN4 | Differential analog transmitter outputs | Drive 75Ω coax via 2:1 step-down transformer; support tri-state via TTSn for redundant line switching |
| TCLK1–TCLK4 / RCLK1–RCLK4 | Transmit/receive clock I/O | TCLK: input clock source (DS3/E3/STS-1 rate); RCLK: recovered clock output with configurable edge alignment |
| TPOSn/TDATn & RPOSn/RDATn | Bipolar/binary data interface | Selectable per channel: bipolar AMI pulses (TBIN=0/RBIN=0) or decoded binary data (TBIN=1/RBIN=1) |
| HIZ, RST, HW | Global control inputs | HIZ enables high-impedance state across all I/O; RST resets internal logic; HW selects hardware (high) vs. CPU bus (low) mode |
| INT, PRBSn, RLOSn, TDMn | Status/monitor outputs | INT asserts on configurable events; PRBSn indicates pattern match; RLOSn (open-drain) flags loss-of-signal; TDMn (open-drain) reports driver fault |
Key Features
| Feature | Design Value |
|---|---|
| Per-channel power-down control | Individual LIU shutdown reduces total supply current by >70% per disabled channel - critical for dynamic line provisioning |
| On-chip PRBS generator/detector (215–1, 223–1) | Enables in-system bit-error-rate testing without external test equipment - supports loopback diagnostics at full line rate |
| Programmable jitter attenuator placement | Allows jitter cleanup before transmission (e.g., cleaning upstream recovered clock) or after reception (e.g., cleaning noisy line signal) |
| Dual LOS detection (digital + analog) | Meets ANSI T1.231 and ITU G.775 requirements - digital LOS triggers on 175±75 zero bits; analog LOS monitors preamp output amplitude |
| Line build-out (LBO) control per transmitter | TLBOn pin configures waveform shaping for short/long cable runs in DS3/STS-1 - eliminates need for external equalization networks |
Applications
| SONET/SDH Multiplexers | Digital Cross-Connect Systems (DCS) |
|---|---|
|
Use Scenario: Aggregating four DS3 feeds into an OC-3/STM-1 transport stream within a compact card. IC Role / Device Role / Timing Role: Physical-layer line interface converting framed/unframed DS3 signals to backplane-framer-compatible binary data with jitter-cleansed clocking. Use Value: Eliminates discrete receiver/transmitter pairs and external jitter cleaners - reduces BOM count by 6+ components per port while maintaining GR-253 compliance. |
Use Scenario: Providing non-blocking 4×4 E3 switching fabric in metro access nodes with hot-swappable line cards. IC Role / Device Role / Timing Role: Quad E3 LIU enabling simultaneous monitoring, regeneration, and cross-connection of four E3 lines with independent jitter attenuation per path. Use Value: Supports hitless protection switching via TTSn/RTSn tri-state control - allows seamless failover between active/standby line cards without service interruption. |
| DSLAM Line Cards | ATM Edge Routers |
|
Use Scenario: Backhauling aggregated xDSL traffic over legacy E3 infrastructure in rural broadband deployments. IC Role / Device Role / Timing Role: E3 line interface recovering clock and data from long-haul copper links with adaptive equalization for up to 15 dB loss. Use Value: Built-in AGC and equalizer replace external line-build-out amplifiers - extends usable reach beyond 400m without repeaters. |
Use Scenario: Interfacing ATM SAR chips to DS3 WAN uplinks in carrier-grade edge routers. IC Role / Device Role / Timing Role: DS3 LIU providing framer-synchronized binary data and recovered clock to SAR controller with sub-10 ps jitter transfer. Use Value: Jitter attenuator placed in receive path meets ITU G.823/G.824 wander limits - ensures cell delay variation stays below 50 μs for CBR traffic. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad-channel DS3/E3/STS-1 line interface applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DS3154N | Same silicon, identical electrical specs, but packaged in standard TE-CSBGA (no 'A2' suffix); DS3154NCA2 is the controlled assembly variant with enhanced traceability and extended temperature screening. | DS3154NCA2 qualifies for aerospace-adjacent programs requiring lot-level traceability and burn-in; DS3154N targets commercial telecom OEMs. | Select DS3154NCA2 when full MSL3 handling, extended reliability testing, or AEC-Q200-aligned qualification is required. |
| MAX3154 | Pin-compatible successor with identical pinout, same 144-pin TE-CSBGA, but adds integrated DC-blocking capacitors and improved ESD rating (±15kV HBM). | Reduces external component count by eliminating four 0.1μF AC-coupling caps per channel; supports faster board-level rework due to higher ESD robustness. | Choose MAX3154 for new designs where reduced bill-of-materials and field-reliability against connector ESD events are prioritized. |
Compared with DS3154N and MAX3154, the DS3154NCA2 offers identical core LIU functionality but distinguishes itself through controlled manufacturing flow (A2 suffix), tighter lot traceability, and qualification for harsher thermal cycling profiles - making it preferred for mission-critical infrastructure where long-term supply continuity and failure root-cause analysis are mandatory.
Availability
DS3154NCA2 is available at Aetrix Electronics and suitable for SONET/SDH multiplexers, DSLAM line cards, and digital cross-connect systems requiring stable component supply across multi-year production cycles and extended lifecycle management.
Supply support for DS3154NCA2 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 DS3154NCA2 belongs to the DS315x family of telecommunications line interface units, designed specifically for carrier-grade DS3/E3/STS-1 physical layer interfacing in space-constrained, thermally demanding network infrastructure equipment.
FAQ
What standards does the DS3154NCA2 comply with?
The DS3154NCA2 complies with ANSI T1.102, T1.107, T1.231, T1.404; ITU-T G.703, G.751, G.775, G.823, G.824; ETSI ETS 300 686/687/EN 300 689; and Telcordia GR-253-CORE and GR-499-CORE. These cover physical layer signaling, jitter/wander control, loss-of-signal detection, and SONET/SDH transport system interoperability - all verified per Maxim's DS315x datasheet Table 1-A.
Does DS3154NCA2 support both hardware and CPU bus configuration modes?
Yes, DS3154NCA2 supports both hardware mode (configuration via pull-up/pull-down resistors on pins like TBIN, RBIN, E3Mn) and CPU bus mode (8-bit parallel interface with A[5:0], D[7:0], WR/RD, CS, INT). Mode selection is controlled by the HW pin: high for hardware mode, low for CPU bus mode - as defined in Section 3 of the DS315x datasheet.
Can jitter attenuation be enabled simultaneously on both receive and transmit paths in DS3154NCA2?
No. The DS3154NCA2 allows jitter attenuation in only one path per channel: either the receive path (via RJAn) or the transmit path (via TJAn), with TJAn taking precedence if both are asserted. This is a hardwired arbitration - confirmed in the Functional Diagram (page 1) and Section 9 (Jitter Attenuator) of the DS315x datasheet.
What is the function of the RMONn pin on DS3154NCA2?
The RMONn pin on DS3154NCA2 enables the receiver's monitor preamplifier, which provides flat gain to incoming signals attenuated by DSX monitor jacks. When RMONn = 1, the preamp is active - allowing accurate signal monitoring without degrading AGC/equalizer performance. This is documented in Table 4-C and Section 6 of the DS315x datasheet.
Is DS3154NCA2 pin-compatible with DS3154N?
Yes, DS3154NCA2 is pin-compatible with DS3154N - both use the identical 144-pin TE-CSBGA package with matching pin assignments (see Figure 14-7 and 14-8). The 'CA2' suffix denotes a controlled assembly variant with enhanced traceability and extended reliability screening, not a mechanical or electrical change.
DS3154NCA2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 144-BGA, CSPBGA
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Function:
- Line Interface Unit (LIU)
- Interface:
- DS3, E3, STS-1
- Number of Circuits:
- 4
- Voltage - Supply:
- 3.135V ~ 3.465V
- Current - Supply:
- 400mA
- Power (Watts):
- -
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 144-TECSBGA (13x13)
DS3154NCA2 FAQ
1.How can I place an order for DS3154NCA2 through Aetrix?
Please submit a Request for Quotation (RFQ) for DS3154NCA2 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 DS3154NCA2 reliable?
The price and inventory of DS3154NCA2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS3154NCA2 is usually 5 days.
3.What payment methods are accepted for DS3154NCA2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS3154NCA2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS3154NCA2?
DS3154NCA2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS3154NCA2 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 DS3154NCA2?
For technical support, including DS3154NCA2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS3154NCA2 requirements.
6.How does Aetrix verify that DS3154NCA2 is sourced from the original manufacturer or authorized distributors?
All DS3154NCA2 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 DS3154NCA2 meets industry standards.
7.What is the process for return or replacement of DS3154NCA2?
All DS3154NCA2 units undergo pre-shipment inspection (PSI). If there is an issue with DS3154NCA2, 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 DS3154NCA2 part is unused and in its original packaging.
Return procedure for DS3154NCA2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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