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Microchip Technology SY10E446JC
- Part No.:
- SY10E446JC
- Manufacturer:
- Microchip Technology
- Category:
- Specialized
- Package:
- 28-LCC (J-Lead)
- Datasheet:
-
SY10E446JC.pdf
- Description:
- IC INTERFACE SPECIALIZED 28PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,058
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Product details
Overview
SY10E446JC from Micrel, Inc. is a 4-bit parallel-to-serial ECL converter with differential clock and serial I/O, supporting up to 1.6 Gb/s NRZ data rate, internal ÷4/÷8 clock generation, and MODE-selectable 4-bit or cascaded 8-bit operation. It operates over –4.2 V to –5.5 V VEE, features asynchronous SYNC reset, and is used in high-speed telecom data serialization.
For engineers reviewing the SY10E446JC datasheet, SY10E446JC pinout, SY10E446JC application, or SY10E446JC equivalent, key selection criteria include its 1.6 Gb/s max data rate, differential ECL signaling compatibility, 28-pin PLCC package, VBB reference for single-ended interfacing, and dual-clock-output capability (CL/4, CL/8).
Technical Context
The SY10E446JC implements a synchronous 4-bit shift register driven by differential CLK inputs, with output latching on negative clock edges. Its internal divide-by-4 and divide-by-8 circuits generate CL/4 and CL/8 outputs for local timing and multi-chip synchronization.
Conversion mode is controlled by the MODE pin: LOW enables 4-bit conversion; HIGH configures internal load clocking for two-device 8-bit cascading. The SYNC input asynchronously resets internal clock dividers and shift registers without requiring clock alignment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Data Rate | 1.6 Gb/s NRZ - supports high-speed backplane and fiber channel serialization |
| Propagation Delay (CLK→SOUT) | 1000–1700 ps - defines minimum clock period for reliable serial output timing |
| Input Voltage Range (VEE) | –4.2 V to –5.5 V - ensures compatibility with standard 10E ECL logic families |
| VBB Reference Output | –1.38 V to –1.19 V - provides switching threshold for single-ended input interfacing |
| Power Supply Current | 110–132 mA - determines thermal design and supply rail decoupling requirements |
| Set-up Time (Dn) | –400 ps - requires parallel data stable before clock edge for correct sampling |
| Hold Time (Dn) | 550–800 ps - mandates minimum data retention after clock edge to avoid metastability |
Pinout & Package
SY10E446JC is housed in a 28-pin Plastic Leaded Chip Carrier (PLCC) package, designated J28-1, with Sn-Pb lead finish and commercial temperature range (0°C to +85°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| D0–D3 | Parallel Data Inputs | 4-bit parallel data bus latched on rising CLK edge (negative-edge triggered output) |
| SIN, SIN | Differential Serial Input | Accepts serialized data from upstream device in cascaded 8-bit configuration |
| SOUT, SOUT | Differential Serial Output | Drives 1.6 Gb/s NRZ stream; referenced to VEE and terminated to –2.0 V |
| CLK, CLK | Differential Clock Input | Primary timing source; negative edge triggers output serialization |
| CL/4, CL/4 | Differential ÷4 Clock Output | Provides synchronized ¼-rate clock for downstream logic or feedback |
| CL/8, CL/8 | Differential ÷8 Clock Output | Provides synchronized ⅛-rate clock for control or monitoring functions |
| MODE | Conversion Mode Control | LOW = 4-bit mode; HIGH = enables internal 8-bit load clock for cascading |
| SYNC | Asynchronous Reset Input | Resets internal dividers and shift register independently of CLK phase |
| VBB | Reference Voltage Output | –1.3 V typical; used as bias for single-ended inputs or AC coupling |
| VCCO | Output Power Supply | Connected to GND; supplies current to differential output stages |
| VEE | Negative Supply Rail | –4.2 V to –5.5 V; powers all ECL circuitry including inputs and outputs |
| VCC | Positive Supply Rail | GND; used only for internal bias generation, not power delivery |
Key Features
| Feature | Design Value |
|---|---|
| On-chip ÷4 and ÷8 clock generation | Eliminates external clock dividers; CL/4 and CL/8 outputs support timing-critical downstream logic |
| Extended VEE range (–4.2 V to –5.5 V) | Ensures interoperability with legacy 10E systems and accommodates supply tolerance drift |
| Asynchronous SYNC reset | Enables deterministic startup and error recovery without clock domain alignment |
| Internal 75 kΩ input pulldowns | Prevents floating inputs during power-up or unconnected MODE/SYNC pins |
| Mode-selectable 4-/8-bit operation | Supports flexible system architecture: single-chip 4-bit or dual-chip 8-bit with shared clock tree |
Applications
| High-Speed Telecom Serialization | Fiber Channel Transmitter Interface |
|---|---|
Use Scenario: Converting parallel 4-bit data from ASIC or FPGA into a 1.6 Gb/s NRZ serial stream for optical module driver ICs. IC Role / Device Role / Timing Role: Parallel-to-serial converter providing precise clock-aligned serialization with CL/4 output for status monitoring. Use Value: Enables direct interface to laser diode drivers without external clock division or retiming logic. |
Use Scenario: Feeding serialized data into FC-AL or FC-PH physical layer transceivers operating at 1.0625 Gb/s. IC Role / Device Role / Timing Role: High-fidelity serializer with low jitter propagation delay (1000–1700 ps) meeting Fibre Channel timing budgets. Use Value: Meets FC-0 electrical compliance for setup/hold and pulse width without additional retiming buffers. |
| Backplane Data Multiplexing | Cascaded 8-Bit Conversion System |
Use Scenario: Aggregating multiple 4-bit parallel buses onto a shared high-speed backplane trace. IC Role / Device Role / Timing Role: Serializer with differential SOUT and CL/4 outputs driving controlled-impedance transmission lines. Use Value: Reduces pin count and routing complexity versus parallel bus while maintaining signal integrity at >1 GHz. |
Use Scenario: Two SY10E446JC devices cascaded to serialize 8-bit parallel data at up to 700 MHz clock frequency. IC Role / Device Role / Timing Role: Master-slave pair where lower device feeds SOUT to upper device's SIN; MODE=HIGH enables 8-bit load clock. Use Value: Achieves 8-bit serialization without custom ASIC; worst-case tPD + tS fits within 1400 ps clock period. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar parallel-to-serial conversion applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SY100E446JC | Higher drive strength; VOH = –1025 V (100E), wider VEE tolerance (–4.0 V to –5.5 V), higher ICC (127–152 mA) | Preferred for longer trace lengths or heavier capacitive loads; supports extended temperature range | Select SY100E446JC when driving >5 pF loads or operating beyond commercial temperature range |
| MC10E446FN | Pin-compatible Motorola part; identical 28-pin PLCC footprint and function; same 1.3 Gb/s min data rate but no 1.6 Gb/s typ spec | Drop-in replacement in legacy designs using MC10E family; identical truth table and timing behavior | Choose MC10E446FN for existing MC10E-based PCBs requiring no layout change |
Compared with SY10E446JC, SY100E446JC delivers higher output drive and thermal margin at increased power, while MC10E446FN offers guaranteed pin-and-function compatibility with older Motorola designs but lacks the 1.6 Gb/s typical performance.
Availability
SY10E446JC is available at Aetrix Electronics and suitable for high-speed telecom serialization, fiber channel transmitter interfaces, and backplane data multiplexing requiring stable component supply and long-term industrial availability.
Supply support for SY10E446JC 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
Micrel, Inc. was a U.S.-based semiconductor company specializing in high-speed analog, RF, and mixed-signal ICs before its acquisition by Microchip Technology in 2015.
The SY10E446JC belongs to Micrel's 10E ECL logic family, designed specifically for ultra-high-speed data conversion in telecom infrastructure, test equipment, and digital interconnect systems.
FAQ
What is the maximum guaranteed data rate for SY10E446JC?
The SY10E446JC guarantees a minimum conversion frequency of 1.3 Gb/s across commercial temperature range (0°C to +85°C), with typical performance reaching 1.6 Gb/s under nominal conditions. This rating applies to NRZ data format and assumes proper termination, signal integrity, and VEE regulation within –4.2 V to –5.5 V.
How does the MODE pin affect SY10E446JC operation?
The MODE pin selects conversion width: when pulled LOW or left open, SY10E446JC operates as a 4-bit parallel-to-serial converter; when driven HIGH, it configures internal clocking to support cascaded 8-bit operation with a second SY10E446JC. The MODE pin has internal 75 kΩ pulldown, so no external resistor is required for 4-bit default.
Can SY10E446JC accept single-ended inputs?
Yes - SY10E446JC supports single-ended inputs via its VBB pin, which provides a –1.3 V reference. For single-ended use, tie VBB to the inverting SIN input and bypass with a 0.01 µF capacitor. However, above 500 MHz, differential signaling is recommended to maintain signal integrity and jitter performance.
What is the purpose of the SYNC input on SY10E446JC?
The SYNC input on SY10E446JC provides asynchronous reset of internal clock dividers and shift register state. Asserting SYNC forces immediate restart of the conversion sequence regardless of CLK phase, enabling deterministic initialization and error recovery in systems where clock alignment cannot be guaranteed.
Is SY10E446JC pin-compatible with SY100E446JC?
Yes - SY10E446JC and SY100E446JC share identical 28-pin PLCC (J28-1) packaging, pinout, and functional mapping. They differ only in electrical specifications: SY100E446JC offers higher output drive, wider VEE tolerance, and higher supply current, making it suitable for more demanding loading or extended temperature environments.
SY10E446JC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 28-LCC (J-Lead)
- Packaging:
- Bulk
- Product Status:
- Discontinued at Digi-Key
- Applications:
- Data Transport
- Interface:
- Parallel/Serial
- Voltage - Supply:
- -
- Supplier Device Package:
- 28-PLCC (11.48x11.48)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
SY10E446JC FAQ
1.How can I place an order for SY10E446JC through Aetrix?
Please submit a Request for Quotation (RFQ) for SY10E446JC 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 SY10E446JC reliable?
The price and inventory of SY10E446JC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SY10E446JC is usually 5 days.
3.What payment methods are accepted for SY10E446JC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SY10E446JC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SY10E446JC?
SY10E446JC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SY10E446JC 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 SY10E446JC?
For technical support, including SY10E446JC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SY10E446JC requirements.
6.How does Aetrix verify that SY10E446JC is sourced from the original manufacturer or authorized distributors?
All SY10E446JC 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 SY10E446JC meets industry standards.
7.What is the process for return or replacement of SY10E446JC?
All SY10E446JC units undergo pre-shipment inspection (PSI). If there is an issue with SY10E446JC, 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 SY10E446JC part is unused and in its original packaging.
Return procedure for SY10E446JC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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