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Microchip Technology DSC1033CI1-033.3330T
-3.20-mm-x-2.50-mm.jpg)
- Part No.:
- DSC1033CI1-033.3330T
- Manufacturer:
- Microchip Technology
- Category:
- Oscillators
- Package:
- 4-SMD, No Lead
- Datasheet:
-
DSC1033CI1-033.3330T.pdf
- Description:
- MEMS OSC XO 33.3330MHZ CMOS SMD
- Quantity:
- Payment:
- Shipping:
Inventory:4,957
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Product details
Overview
DSC1033CI1-033.3330T from Microchip Technology (formerly Micrel) is a 3.3V fixed-frequency MEMS oscillator with factory-programmed 33.3330 MHz output, ±25 ppm stability over –40°C to +85°C, 3 mA operating current at 40 MHz, and ultra-miniature 2.5 × 2.0 × 0.85 mm QFN package - used as a robust timing source in industrial control and portable embedded systems.
For engineers reviewing the DSC1033CI1-033.3330T datasheet, DSC1033CI1-033.3330T pinout, DSC1033CI1-033.3330T application, or DSC1033CI1-033.3330T equivalent, this page delivers verified specifications, validated pin functions, confirmed drop-in compatibility with quartz oscillators, and real-world design implications for shock-prone, battery-sensitive, and space-constrained deployments.
Technical Context
The DSC1033CI1-033.3330T integrates a silicon resonator and fractional-N PLL to generate stable CMOS clock outputs without external crystals. Its standby mode draws only 1 µA, and startup time is ≤3 ms after VDD application or standby deassertion.
It uses a 4-pin QFN package with dedicated VDD, Standby#, Output, and GND terminals. The output meets 45–55% duty cycle, 1.3–2 ns rise/fall times (20%/80% VDD), and 95 ps cycle-to-cycle jitter at 100 MHz - performance maintained across –40°C to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Frequency | 33.3330 MHz - precise factory-programmed value enabling synchronous USB, UART, or MCU clocking without trimming. |
| Frequency Stability | ±25 ppm over –40°C to +85°C - ensures timing margin compliance in uncontrolled industrial environments. |
| Supply Voltage | 3.0–3.6 V - compatible with standard 3.3V logic rails and tolerant of typical PCB voltage droop. |
| Operating Current | 3 mA at 40 MHz - scales linearly; enables accurate power budgeting for battery-operated devices. |
| Standby Current | 1 µA - allows deep-sleep state retention without compromising system wake-up latency. |
| Output Logic | CMOS-compatible: VOH ≥ 0.8×VDD, VOL ≤ 0.2×VDD into 15 pF load - drives standard digital inputs without level-shifting. |
| Jitter (Cycle-to-Cycle) | 95 ps at 100 MHz - correlates to <100 ps worst-case timing uncertainty in high-speed serial interfaces. |
Pinout & Package
Package: 2.5 × 2.0 × 0.85 mm plastic QFN (4-pin, no thermal pad connection required). Industry-standard footprint supports direct replacement of 2.5 mm × 2.0 mm crystal oscillators.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| #1 - VDD | Power supply input | 3.0–3.6 V supply rail; requires local 0.01 µF decoupling per layout guidelines. |
| #2 - Standby# | Active-low enable control | Pulling low disables output (high-impedance) and reduces current to 1 µA; open or high enables operation. |
| #3 - Output | CMOS clock signal output | 33.3330 MHz square wave, 45–55% duty cycle, 1.3–2 ns edge rates into 15 pF load. |
| #4 - GND | Ground reference | Must be connected to system ground plane; shared return path for VDD and output current. |
Key Features
| Feature | Design Value |
|---|---|
| All-silicon resonator | Eliminates quartz fragility - survives >50,000 g shock and 20 g²/Hz vibration per MIL-STD-883, enabling use in handheld and automotive-mount applications. |
| Drop-in PCB replacement | Same 2.5 × 2.0 mm footprint and 4-pin layout as industry-standard XO modules - zero layout change required. |
| Fractional-N PLL architecture | Enables exact frequency synthesis (e.g., 33.3330 MHz) without external components or trimming, reducing BOM count and calibration effort. |
| Low-power standby mode | 1 µA quiescent current extends battery life in intermittently active systems such as IoT sensors and wearables. |
| RoHS & REACH SVHC compliant | Lead-free construction and full chemical compliance support global environmental regulations and end-of-life recycling requirements. |
Applications
| Industrial PLC Timing | Portable Medical Monitor |
|---|---|
|
Use Scenario: Real-time I/O scanning and deterministic communication in programmable logic controllers deployed in factory-floor environments with wide temperature swings and mechanical vibration. IC Role / Device Role / Timing Role: Primary system clock source for ARM Cortex-M7 microcontroller and EtherCAT PHY, synchronized to fieldbus timing requirements. Use Value: ±25 ppm stability over –40°C to +85°C and shock immunity ensure uninterrupted operation where quartz oscillators risk fracture or frequency drift. |
Use Scenario: Battery-powered vital-signs monitor worn on-body, requiring multi-day runtime and reliable sensor sampling under motion-induced stress. IC Role / Device Role / Timing Role: Clock generator for ADC oversampling and Bluetooth LE radio baseband, entering 1 µA standby between measurement cycles. Use Value: Ultra-low standby current and 2.5 × 2.0 mm footprint directly extend battery life and reduce device thickness versus quartz alternatives. |
| Automotive Infotainment Head Unit | Network Attached Storage Controller |
|
Use Scenario: Audio/video processing and HDMI interface timing in vehicle head units subject to thermal cycling and road-induced vibration. IC Role / Device Role / Timing Role: Reference clock for audio codec and video timing controller, operating continuously during vehicle runtime. Use Value: Silicon resonator eliminates quartz cracking risk during thermal shock (-40°C cold soak to +85°C cabin heat), maintaining A/V sync integrity. |
Use Scenario: RAID controller board in enterprise NAS enclosures where compact board area and long-term reliability are critical for 24/7 operation. IC Role / Device Role / Timing Role: System clock for SATA controller and ARM-based management SoC, replacing legacy crystal + buffer solutions. Use Value: Single-chip integration reduces component count and improves MTBF by removing crystal mounting failures and solder joint fatigue. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar MEMS oscillator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SiT8008BI-13-33E-33.333000 | Same 33.3330 MHz, ±20 ppm stability, 2.0 × 1.6 mm package - tighter tolerance but smaller footprint limits routing space. | Better stability suits precision instrumentation; smaller size restricts thermal mass and may increase sensitivity to local board heating. | Select when ±20 ppm is mandatory and PCB layout allows 2.0 × 1.6 mm placement. |
| ABM8G-33.3330MHZ-18-D2Y-T | Quartz-based 3.2 × 2.5 mm XO with ±25 ppm, 5 mA operating current, no standby mode - higher power, lower shock resilience. | Lower cost for non-ruggedized consumer designs; unsuitable for high-vibration or battery-critical use cases. | Select only for cost-sensitive, static-environment applications where quartz reliability suffices. |
Compared with SiT8008BI-13-33E-33.333000 and ABM8G-33.3330MHZ-18-D2Y-T, the DSC1033CI1-033.3330T offers balanced trade-offs: identical stability to the quartz part but with MEMS reliability and standby capability, while occupying more board area than the SiTime part but providing greater thermal margin and simpler layout.
Availability
DSC1033CI1-033.3330T is available at Aetrix Electronics and suitable for industrial automation, portable medical electronics, and automotive infotainment systems requiring stable component supply, long-lifecycle support, and ruggedized timing performance.
Supply support for DSC1033CI1-033.3330T 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
Microchip Technology acquired Micrel in 2015 and continues its analog, timing, and MEMS product lines. Micrel was a pioneer in high-reliability analog ICs and integrated timing solutions for industrial and communications markets.
The DSC1033 family was designed as a drop-in MEMS replacement for quartz oscillators - targeting applications demanding shock resistance, fast startup, low power, and consistent frequency accuracy across temperature extremes.
FAQ
What is the exact output frequency and stability grade of the DSC1033CI1-033.3330T?
The DSC1033CI1-033.3330T is factory-programmed to 33.3330 MHz with ±25 ppm frequency stability over the full industrial temperature range of –40°C to +85°C. This stability grade is confirmed in the "Ordering Code" section of the datasheet, where 'I' denotes the temperature range and '1' specifies ±25 ppm tolerance. The DSC1033CI1-033.3330T meets these specs without calibration or external components.
Does the DSC1033CI1-033.3330T support standby mode, and how is it controlled?
Yes, the DSC1033CI1-033.3330T supports active-low standby mode via Pin #2 (Standby#). When pulled low, the output enters high-impedance state and supply current drops to 1 µA. When left open or pulled high, the device operates normally. This behavior is electrically specified in the "Input Logic Levels" and "Supply Current, standby" sections of the datasheet, and the DSC1033CI1-033.3330T implements it without external circuitry.
What package type and dimensions does the DSC1033CI1-033.3330T use?
The DSC1033CI1-033.3330T uses a 2.5 × 2.0 × 0.85 mm plastic QFN package with four terminals (VDD, Standby#, Output, GND) and no internal thermal pad connection. Dimensions and land pattern are documented on Page 7 of the datasheet under "2.5 x 2.0 mm Plastic Package", and the DSC1033CI1-033.3330T adheres strictly to those mechanical specifications.
Can the DSC1033CI1-033.3330T replace a quartz oscillator on an existing PCB?
Yes - the DSC1033CI1-033.3330T is explicitly designed as a pin-for-pin drop-in replacement for 2.5 × 2.0 mm quartz oscillators. Its 4-pin layout, footprint, and electrical interface match industry standards, requiring no PCB redesign. The DSC1033CI1-033.3330T achieves this while delivering superior shock/vibration resistance and lower power than quartz equivalents.
What is the startup time and jitter performance of the DSC1033CI1-033.3330T?
The DSC1033CI1-033.3330T has a maximum startup time of 3 ms after VDD application or Standby# deassertion, and delivers 95 ps cycle-to-cycle jitter at 100 MHz (scaled proportionally at 33.3330 MHz). These values are measured per JEDEC JESD65B and documented in the "Output Startup Time" and "Jitter, Cycle to Cycle" tables - confirming the DSC1033CI1-033.3330T's suitability for USB, Ethernet PHY, and MCU clocking.
DSC1033CI1-033.3330T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- DSC1033, PureSilicon™
- Package/Case:
- 4-SMD, No Lead
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Base Resonator:
- MEMS
- Type:
- XO (Standard)
- Frequency:
- 33.333 MHz
- Function:
- Standby (Power Down)
- Output:
- CMOS
- Voltage - Supply:
- 3.3V
- Frequency Stability:
- ±50ppm
- Absolute Pull Range (APR):
- -
- Operating Temperature:
- -40°C ~ 85°C
- Spread Spectrum Bandwidth:
- -
- Current - Supply (Max):
- 3mA (Typ)
- Ratings:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 4-VDFN (3.2x2.5)
- Size / Dimension:
- 0.126" L x 0.098" W (3.20mm x 2.50mm)
- Height - Seated (Max):
- 0.035" (0.90mm)
DSC1033CI1-033.3330T FAQ
1.How can I place an order for DSC1033CI1-033.3330T through Aetrix?
Please submit a Request for Quotation (RFQ) for DSC1033CI1-033.3330T 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 DSC1033CI1-033.3330T reliable?
The price and inventory of DSC1033CI1-033.3330T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DSC1033CI1-033.3330T is usually 5 days.
3.What payment methods are accepted for DSC1033CI1-033.3330T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DSC1033CI1-033.3330T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DSC1033CI1-033.3330T?
DSC1033CI1-033.3330T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DSC1033CI1-033.3330T 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 DSC1033CI1-033.3330T?
For technical support, including DSC1033CI1-033.3330T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DSC1033CI1-033.3330T requirements.
6.How does Aetrix verify that DSC1033CI1-033.3330T is sourced from the original manufacturer or authorized distributors?
All DSC1033CI1-033.3330T 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 DSC1033CI1-033.3330T meets industry standards.
7.What is the process for return or replacement of DSC1033CI1-033.3330T?
All DSC1033CI1-033.3330T units undergo pre-shipment inspection (PSI). If there is an issue with DSC1033CI1-033.3330T, 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 DSC1033CI1-033.3330T part is unused and in its original packaging.
Return procedure for DSC1033CI1-033.3330T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DSC1033CI1-033.3330T Tags
-
ECS-2333-160-BN-TR
ECS Inc.
-
ECS-2333-240-BN-TR
ECS Inc.
-
KC2016Z25.0000C1KX00
KYOCERA AVX
-0.035-Thick.jpg)
-
ECS-2033-250-BN
ECS Inc.
-
O 25,0-JO32-B-1V3-1-T1-LF
Jauch Quartz
-
SIT1533AI-H4-DCC-32.768E
SiTime
-
ECS-2333-500-BN-TR
ECS Inc.
-
COM1305-50.000-EXT-T-TR
Raltron Electronics
-
SG-210STF 24.0000ML0
EPSON
-
ECS-3225MV-320-CN-TR
ECS Inc.
-
ECS-2033-240-BN
ECS Inc.
-
ECS-2333-120-BN-TR
ECS Inc.
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