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Analog Devices Inc./Maxim Integrated DS4M133D+33
- Part No.:
- DS4M133D+33
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Programmable Timers and Oscillators
- Package:
- -
- Datasheet:
-
DS4M133D+33.pdf
- Description:
- IC OSC CLOCK 133.33MHZ 10-LCCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,224
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Product details
Overview
DS4M133D+33 from Maxim Integrated is a 3.3V LVDS-output margining clock oscillator with nominal frequency 133.33MHz, ±5% programmable frequency deviation via three-level MS pin, <0.9ps RMS phase jitter (12kHz–20MHz), and 5mm × 3.2mm ceramic LCCC package - used in high-reliability memory clocks and RAID controller timing systems.
For engineers reviewing the DS4M133D+33 datasheet, DS4M133D+33 pinout, DS4M133D+33 application, or DS4M133D+33 equivalent, key selection criteria include LVDS output compatibility, ±5% margining control logic, 133.33MHz nominal stability over –40°C to +85°C, and 10-pin LCCC thermal pad grounding requirement.
Technical Context
The DS4M133D+33 integrates an AT-cut fundamental-mode crystal with a low-jitter PLL to synthesize 133.33MHz and its ±5% variants. Its three-level MS input (low/mid/high) directly selects nominal, –5%, or +5% output frequencies without external programming.
It features active-high OE with internal 100kΩ pullup, LVDS differential outputs (VOH=1.475V, VOL=0.925V, VOD=250–425mV), and operates from 3.135V–3.465V supply with ICC <75mA typical under load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Frequency | 133.33MHz - precise base clock for DDR2/DDR3 memory interfaces and SAS/SATA controllers. |
| Frequency Margining | ±5% selectable via MS pin voltage levels - enables system-level timing margin validation without hardware change. |
| Phase Jitter (RMS) | <0.9ps (12kHz–20MHz) - meets stringent jitter budgets for high-speed serial links and SERDES clocking. |
| Output Type | LVDS - provides 100Ω differential termination compatibility, low EMI, and noise-immune signaling. |
| Supply Voltage | 3.3V ±4.5% (3.135V–3.465V) - matches standard I/O rail in enterprise storage and networking platforms. |
| Operating Temp | –40°C to +85°C - qualified for industrial-grade RAID enclosures and embedded server modules. |
| Package | 10-pin LCCC (5.00mm × 3.20mm × 1.49mm) with exposed thermal pad - requires PCB ground connection for thermal management. |
Pinout & Package
DS4M133D+33 uses a 10-lead ceramic LCCC package (package code L1053+H2) with exposed paddle (EP) that must be soldered to PCB ground for thermal relief. Pin 1 is OE (active-high output enable); pin 2 is MS (three-level margin select); pins 4 and 5 are differential LVDS outputs (OUTP/OUTN); pin 6 is VCC; pin 3 is GND; pins 7–10 are no-connect and must remain floating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OE) | Active-high output enable | Internal 100kΩ pullup ensures enabled state when floating; pulling low disables LVDS outputs to logical '1' state. |
| 2 (MS) | Three-level margin select | Accepts low/mid/high voltage to set fO, fO–5%, or fO+5%; internal 100kΩ pulldown defaults to nominal frequency if open. |
| 3 (GND) | Ground reference | Primary return path for supply and signal currents; connects to EP for thermal conduction. |
| 4 (OUTP) | LVDS positive output | Differential pair leg - requires 100Ω termination across OUTP/OUTN for proper signal integrity. |
| 5 (OUTN) | LVDS negative output | Complementary leg of LVDS pair - matched rise/fall time (175ps) ensures <5% duty cycle error. |
| 6 (VCC) | Power supply input | 3.3V supply with bypassing required (0.01μF + 0.1μF near pin); supports up to 100mA peak current. |
| 7–10 (N.C.) | No connection | Must be left unconnected on PCB; no internal circuitry attached - avoids unintended coupling or leakage paths. |
Key Features
| Feature | Design Value |
|---|---|
| Three-level frequency margining | Enables real-time system-level timing stress testing at fO, fO–5%, and fO+5% without firmware or clock source reconfiguration. |
| LVDS differential output | Delivers 250–425mV differential swing into 100Ω load with <175ps edge rates - minimizes intersymbol interference in dense PCB layouts. |
| Integrated thermal pad (EP) | Exposed paddle tied to ground reduces θJA to 90°C/W - sustains stable operation at full load across industrial temperature range. |
| Supply noise rejection | Specified deterministic jitter contribution <6.4ps at 1MHz supply ripple - maintains timing integrity in noisy power domains. |
| Startup time | 1.0ms maximum - ensures rapid clock availability after power-on reset in storage subsystems requiring fast boot sequences. |
Applications
| Memory Clocking | RAID Controller Timing |
|---|---|
Use Scenario: Synchronizing DDR2/DDR3 memory interfaces in enterprise servers and workstations. IC Role / Device Role / Timing Role: Primary system clock source delivering 133.33MHz with tight jitter and margining capability for signal integrity validation. Use Value: Enables pre-deployment margin testing of memory bus timing margins using ±5% frequency shift without changing hardware or BIOS settings. | Use Scenario: Providing reference clock to SAS/SATA host bus adapters and RAID-on-chip controllers. IC Role / Device Role / Timing Role: Low-jitter LVDS clock generator supporting multi-lane storage protocols with deterministic latency. Use Value: Sub-0.9ps RMS jitter ensures reliable data sampling at 3Gbps+ link speeds; LVDS interface suppresses common-mode noise in backplane environments. |
| Network Attached Storage (NAS) | Industrial Data Acquisition |
Use Scenario: Clocking multi-core ARM or x86 SoCs in fanless NAS enclosures operating at extended temperature. IC Role / Device Role / Timing Role: Stable 133.33MHz oscillator with –40°C to +85°C qualification and thermal pad grounding for passive cooling. Use Value: Ceramic LCCC package and exposed paddle maintain frequency stability and reliability without forced airflow or heatsinks. | Use Scenario: Timing precision ADC/DAC sampling clocks in modular test equipment and programmable logic controllers. IC Role / Device Role / Timing Role: Programmable margining source for validating timing裕度 in mixed-signal data paths under varying supply/load conditions. Use Value: Three-level MS pin allows automated margin sweeps during production test - reducing calibration time and fixture complexity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar clock oscillator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DS4M133P+33 | LVPECL output instead of LVDS; same frequency, margining, and package; requires 50Ω PECL_BIAS termination at VCC–2.0V. | Suitable for systems with existing LVPECL clock distribution infrastructure and higher drive strength needs. | Select DS4M133P+33 only when interfacing to legacy LVPECL receivers or when higher output swing (0.595–0.710V) is required. |
| Si530-133M333333DG | Programmable I2C-based XO (not margining oscillator); 133.333333MHz fixed output; 0.3ps RMS jitter; 7mm × 5mm QFN. | Used where dynamic frequency reprogramming is needed, not just ±5% margining; lacks three-level analog MS control. | Choose Si530-133M333333DG for designs requiring field-upgradable frequencies or tighter jitter, but not for simple margin validation workflows. |
Compared with DS4M133P+33, DS4M133D+33 offers lower EMI and better noise immunity via LVDS, while Si530-133M333333DG provides superior jitter and programmability at the cost of added complexity and larger footprint - making DS4M133D+33 optimal for dedicated, low-risk margining in space-constrained storage applications.
Availability
DS4M133D+33 is available at Aetrix Electronics and suitable for memory clocking, RAID controller timing, and industrial data acquisition applications requiring stable component supply, lead-free compliance (JESD97 e4), and guaranteed –40°C to +85°C operation.
Supply support for DS4M133D+33 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) designs precision analog, mixed-signal, and timing ICs for industrial, communications, and computing markets.
The DS4M133D+33 belongs to Maxim's margining clock oscillator product line, engineered specifically for system-level timing validation in high-reliability storage and memory subsystems.
FAQ
What is the nominal output frequency of the DS4M133D+33?
The DS4M133D+33 has a nominal output frequency of 133.33MHz. This value is factory-trimmed and specified over the full operating temperature range (–40°C to +85°C) with initial tolerance of ±20ppm. The DS4M133D+33 supports ±5% frequency deviation via its MS pin, yielding 126.66MHz and 140.00MHz margin points.
Does the DS4M133D+33 require external crystal loading capacitors?
No, the DS4M133D+33 does not require external crystal loading capacitors. It integrates an AT-cut fundamental-mode crystal within the 5mm × 3.2mm ceramic LCCC package, forming a complete self-contained oscillator. Users only need to provide proper VCC bypassing (0.01μF + 0.1μF) and LVDS termination (100Ω across OUTP/OUTN).
How is frequency margining controlled on the DS4M133D+33?
Frequency margining on the DS4M133D+33 is controlled by the three-level MS pin: low-level (≤0.25×VCC–0.15V) selects nominal frequency, mid-level (0.25×VCC+0.15V to 0.75×VCC–0.15V) selects –5%, and high-level (≥0.75×VCC+0.15V) selects +5%. An internal 100kΩ pulldown resistor sets default to nominal if MS is left open.
What is the function of the exposed paddle (EP) on the DS4M133D+33 package?
The exposed paddle (EP) on the DS4M133D+33 serves as a thermal relief path and must be soldered to PCB ground. It reduces thermal resistance (θJA = 90°C/W) to maintain junction temperature within limits during continuous operation. Grounding EP also improves EMI performance and provides mechanical stability for the ceramic LCCC package.
Can the DS4M133D+33 be used with LVPECL receivers?
No, the DS4M133D+33 is configured exclusively for LVDS output and is not compatible with LVPECL receivers. Its output voltage levels (VOH = 1.475V, VOL = 0.925V) and differential swing (250–425mV) meet LVDS standards, not LVPECL's VCC–1.085V / VCC–1.825V levels. For LVPECL interface, use DS4M133P+33 instead.
DS4M133D+33 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- -
- Count:
- -
- Frequency:
- -
- Voltage - Supply:
- -
- Current - Supply:
- -
- Operating Temperature:
- -
- Supplier Device Package:
- -
- Mounting Type:
- -
- Grade:
- -
- Qualification:
- -
DS4M133D+33 FAQ
1.How can I place an order for DS4M133D+33 through Aetrix?
Please submit a Request for Quotation (RFQ) for DS4M133D+33 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 DS4M133D+33 reliable?
The price and inventory of DS4M133D+33 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS4M133D+33 is usually 5 days.
3.What payment methods are accepted for DS4M133D+33?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS4M133D+33 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS4M133D+33?
DS4M133D+33 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS4M133D+33 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 DS4M133D+33?
For technical support, including DS4M133D+33 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS4M133D+33 requirements.
6.How does Aetrix verify that DS4M133D+33 is sourced from the original manufacturer or authorized distributors?
All DS4M133D+33 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 DS4M133D+33 meets industry standards.
7.What is the process for return or replacement of DS4M133D+33?
All DS4M133D+33 units undergo pre-shipment inspection (PSI). If there is an issue with DS4M133D+33, 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 DS4M133D+33 part is unused and in its original packaging.
Return procedure for DS4M133D+33:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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