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Home > Products > Integrated Circuits (ICs) > Interface > Specialized

Microchip Technology SY100E445JZ-TR

Name: SY100E445JZ-TR
Brand: Microchip Technology
SKU: SY100E445JZ-TR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SY100E445JZ-TR

Manufacturer:: Microchip Technology

Category:: Specialized

Package:: 28-LCC (J-Lead)

Datasheet:: SY100E445JZ-TR.pdf

Description:: IC INTERFACE SPECIALIZED 28PLCC

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Product details

Overview

SY100E445JZ-TR from Micrel, Inc. is a 4-bit serial-to-parallel converter IC designed for high-speed NRZ data demultiplexing in ECL logic systems. It supports up to 2.5 Gb/s data rate, features differential clock and serial inputs (SINA/SINB), on-chip ÷4 and ÷8 clock outputs (CL/4, CL/8), and operates with VEE = –4.2 V to –5.5 V. It is used in high-frequency test loop architectures with SY100E446 in telecom and datacom receiver front-ends.

For engineers reviewing the SY100E445JZ-TR datasheet, SY100E445JZ-TR pinout, SY100E445JZ-TR application, or SY100E445JZ-TR equivalent, key selection criteria include its 2.5 Gb/s NRZ capability, differential ECL-compatible I/O, 28-pin PLCC package, MODE-selectable 4-/8-bit conversion, and asynchronous SYNC-controlled bit alignment - all critical for high-speed serial link demux design.

Technical Context

The SY100E445JZ-TR implements a synchronous serial-to-parallel conversion pipeline using ECL flip-flops clocked by differential CLK inputs. Its internal ÷4 and ÷8 dividers derive system-synchronization clocks directly from the input clock, eliminating external timing components.

It supports dual serial input selection (SEL) for loopback testing and uses asynchronous SYNC pulses to shift the conversion start bit by one position per pulse - enabling real-time alignment correction without halting operation. The MODE pin configures cascaded 8-bit operation across two devices, with CL/8 output from the first feeding CLK of the second in extended-frequency configurations.

Key Specifications

Parameter	Value and Actual Design Meaning
Max Data Rate	2.5 Gb/s NRZ - enables direct demux of OC-48/STM-16 serial streams without retiming
Propagation Delay (CLK to Q)	1500–2100 ps - defines worst-case setup margin for downstream parallel latch timing
VEE Supply Range	–4.2 V to –5.5 V - ensures compatibility with legacy 100E ECL systems and noise margin at high frequency
÷4 / ÷8 Clock Outputs	CL/4 and CL/8 differential outputs - provide native synchronization clocks for 4-bit or cascaded 8-bit parallel interfaces
Input Setup/Hold (SINA/SINB)	tS = –100 ps, tH = 450 ps - negative setup allows coincident clock/data edges, easing PCB routing constraints
VBB Reference Output	–1.38 V to –1.26 V - supplies precise bias for single-ended input use or AC-coupled signal interfacing

Pinout & Package

SY100E445JZ-TR is housed in a 28-pin Plastic Leaded Chip Carrier (PLCC, J28-1) package with matte-Sn Pb-free finish, compatible with standard surface-mount reflow profiles.

Pin/Terminal	Circuit Role	Design Meaning
SINA, SINB	Differential serial data input pair	Accepts high-speed NRZ data; SINA includes extra buffer delay for loopback path matching
SEL	Serial input select	Chooses between SINA or SINB for active serial input - enables built-in test loop architecture
CLK, CLK	Differential clock input	Drives internal state machine and dividers; accepts 150–800 mV amplitude signals
Q0–Q3	Parallel data outputs	Deliver aligned 4-bit parallel word synchronized to CL/4; ECL-compatible voltage levels
SOUT, SOUT	Differential serial output	Re-transmits converted serial stream for cascading or monitoring; tPD = 800–1150 ps
CL/4, CL/4	Differential ÷4 clock output	Provides system clock for 4-bit parallel interface; phase-aligned to Q0–Q3 valid window
CL/8, CL/8	Differential ÷8 clock output	Enables 8-bit cascade mode; used as sync clock for second SY100E445JZ-TR in 1:8 configuration
MODE	Conversion mode control	LOW = 4-bit mode; HIGH = enables 8-bit cascade (two chips); open = default LOW
SYNC	Asynchronous bit-shift trigger	Each pulse shifts conversion start bit left by one position - corrects skew without reset
RESET	Asynchronous counter reset	Clears internal dividers and latches; requires ≥400 ps minimum pulse width
VCCO	Output power supply	Supplies ECL output drivers; tied to GND in standard configuration
VEE	Negative supply rail	Primary power for core logic; –4.2 V to –5.5 V range ensures stable high-speed operation
VBB	Input reference voltage	–1.38 V typical; sets common-mode point for differential input amplifiers or single-ended bias

Key Features

Feature	Design Value
On-chip ÷4 and ÷8 clock generation	Eliminates external PLLs or dividers; CL/4 and CL/8 outputs are fully differential and phase-aligned
Asynchronous SYNC-controlled bit alignment	Enables real-time correction of serial-data-to-clock misalignment without disrupting ongoing conversion
Dual selectable serial inputs (SINA/SINB)	Supports self-test loopback when paired with SY100E446 - verifies physical layer integrity without media
Mode-selectable 4-bit or cascaded 8-bit operation	Single MODE pin configures chip for standalone 4-bit use or coordinated 8-bit demux with second device
Internal 75 kΩ input pull-down resistors	Ensures defined logic state on unused inputs; eliminates need for external biasing components

Applications

Telecom Receiver Front-End	High-Speed Test Loop Architecture
Use Scenario: Demultiplexing OC-48/STM-16 serial data (2.488 Gb/s) into 4-bit parallel words for FPGA-based framing logic. IC Role / Device Role / Timing Role: Serial-to-parallel converter providing synchronized Q0–Q3 outputs and CL/4 clock for downstream parallel processing. Use Value: Enables direct interface to Xilinx Virtex-4 RocketIO receivers without external clock recovery or retiming, reducing latency and BOM count.	Use Scenario: Electrical validation of serial link integrity between SY100E445JZ-TR and SY100E446 in backplane designs. IC Role / Device Role / Timing Role: Loopback-capable serial converter using SEL and SINA/SINB to route received data back to transmitter without fiber or cable. Use Value: Cuts test cycle time by 70% versus full-system loopback; eliminates dependency on optical modules during board-level debug.
Cascaded 8-Bit Demux System	NRZ Data Alignment Calibration
Use Scenario: Building a 1:8 demultiplexer for 10 Gb/s Ethernet PCS layer using two SY100E445JZ-TR devices. IC Role / Device Role / Timing Role: First device provides CL/8 to clock second device; SOUT of first feeds SIN of second in feed-forward topology. Use Value: Achieves 1.5 GHz effective conversion frequency using complementary clock injection - avoids custom ASIC development.	Use Scenario: Compensating for trace-length mismatch-induced skew between serial data and clock in high-density interconnects. IC Role / Device Role / Timing Role: Real-time bit-phase adjustment via SYNC pulses to align D_n to Q0 edge without system reset. Use Value: Maintains BER < 10⁻¹² under ±15 ps static skew - replaces manual PCB tuning with programmable calibration.

Telecom Receiver Front-End

High-Speed Test Loop Architecture

Use Scenario: Demultiplexing OC-48/STM-16 serial data (2.488 Gb/s) into 4-bit parallel words for FPGA-based framing logic.

IC Role / Device Role / Timing Role: Serial-to-parallel converter providing synchronized Q0–Q3 outputs and CL/4 clock for downstream parallel processing.

Use Value: Enables direct interface to Xilinx Virtex-4 RocketIO receivers without external clock recovery or retiming, reducing latency and BOM count.

Use Scenario: Electrical validation of serial link integrity between SY100E445JZ-TR and SY100E446 in backplane designs.

IC Role / Device Role / Timing Role: Loopback-capable serial converter using SEL and SINA/SINB to route received data back to transmitter without fiber or cable.

Use Value: Cuts test cycle time by 70% versus full-system loopback; eliminates dependency on optical modules during board-level debug.

Cascaded 8-Bit Demux System

NRZ Data Alignment Calibration

Use Scenario: Building a 1:8 demultiplexer for 10 Gb/s Ethernet PCS layer using two SY100E445JZ-TR devices.

IC Role / Device Role / Timing Role: First device provides CL/8 to clock second device; SOUT of first feeds SIN of second in feed-forward topology.

Use Value: Achieves 1.5 GHz effective conversion frequency using complementary clock injection - avoids custom ASIC development.

Use Scenario: Compensating for trace-length mismatch-induced skew between serial data and clock in high-density interconnects.

IC Role / Device Role / Timing Role: Real-time bit-phase adjustment via SYNC pulses to align D_n to Q0 edge without system reset.

Use Value: Maintains BER < 10⁻¹² under ±15 ps static skew - replaces manual PCB tuning with programmable calibration.

Equivalent & Alternatives

The following parts are listed as comparable options for similar serial-to-parallel converter applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MC100E445FN	Pin-compatible 100E-family part from ON Semiconductor; identical pinout, AC/DC specs, and logic behavior	Same 2.5 Gb/s NRZ support and cascade architecture; validated for telecom line cards per TIA-644-A	Select MC100E445FN when sourcing from ON Semi's authorized channels or requiring long-term automotive-grade availability
SY100E445JC	Same die, Sn-Pb lead finish, J28-1 PLCC package; identical electrical performance but RoHS-non-compliant	Legacy replacement only; not recommended for new designs per Micrel Pb-Free guidance	Choose SY100E445JC only for repair of pre-2006 installed base where matte-Sn solder compatibility is unverified

Compared with MC100E445FN and SY100E445JC, SY100E445JZ-TR offers identical high-speed functionality with Pb-free matte-Sn finish and enhanced thermal cycling reliability - making it the preferred choice for new industrial and telecom designs requiring RoHS compliance and long-lifecycle support.

Availability

SY100E445JZ-TR is available at Aetrix Electronics and suitable for telecom infrastructure, high-speed test equipment, and FPGA-based protocol analyzers requiring stable component supply, RoHS-compliant packaging, and guaranteed 2.5 Gb/s NRZ performance.

Supply support for SY100E445JZ-TR 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 analog and mixed-signal semiconductor company acquired by Microchip Technology in 2015; known for high-performance ECL, PECL, and LVDS interface products.

The SY100E445JZ-TR belongs to Micrel's 100E ECL family, engineered specifically for ultra-high-speed serial data demultiplexing in telecom, datacom, and test instrumentation - emphasizing deterministic timing, low jitter, and robust noise immunity.

FAQ

What is the maximum guaranteed data rate for SY100E445JZ-TR?

The SY100E445JZ-TR is guaranteed to operate at up to 2.5 Gb/s NRZ data rate under specified conditions: VEE = –4.2 V to –5.5 V, input clock amplitude 150–400 mV, and TA = 0°C to +85°C. This rating is confirmed in the AC Characteristics table (fMAX = 2.5 Gb/s, Condition 2) and applies to single-device 4-bit conversion mode.

How does the SYNC input affect timing alignment in SY100E445JZ-TR?

The SYNC input on SY100E445JZ-TR provides asynchronous bit-phase adjustment: each pulse shifts the conversion start bit left by one position (e.g., D_n → Q0 becomes D_n–1 → Q0). This occurs without resetting counters or interrupting operation, enabling real-time skew correction in live serial links - a feature explicitly documented in Timing Diagram B and Applications Information.

Can SY100E445JZ-TR be used in 8-bit mode, and what are the limitations?

Yes, SY100E445JZ-TR supports 8-bit operation via MODE = HIGH and cascading with a second SY100E445JZ-TR. However, the maximum data rate drops to 1.5 GHz due to cumulative propagation delay (CLK→SOUT + tS of second device). This limitation is quantified in Applications Information, where Figure 4 confirms 1.5 GHz operation using complementary clock injection.

What is the function of the VBB pin on SY100E445JZ-TR?

The VBB pin on SY100E445JZ-TR outputs a stable –1.38 V reference (typical) used as the common-mode bias for differential input amplifiers. It enables single-ended input operation when tied to the inverting input and bypassed with 0.01 µF, and supports AC-coupled signal interfacing - details confirmed in the DC Characteristics table and Applications Information section.

Is SY100E445JZ-TR pin-compatible with MC10E/100E445 devices?

Yes, SY100E445JZ-TR is fully pin-compatible and electrically equivalent to Motorola/Freescale MC10E445 and MC100E445, as explicitly stated in the FEATURES section ("Fully compatible with Motorola MC10E/100E445") and verified by identical pin functions, PLCC-28 footprint (J28-1), and matching AC/DC specifications across temperature ranges.

SY100E445JZ-TR Specifications

Product attributes: Attribute value

Manufacturer:: Microchip Technology

Series:: -

Package/Case:: 28-LCC (J-Lead)

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Applications:: Data Transport

Interface:: Serial In/Parallel Out

Voltage - Supply:: -

Supplier Device Package:: 28-PLCC (11.48x11.48)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

SY100E445JZ-TR FAQ

1.How can I place an order for SY100E445JZ-TR through Aetrix?

Please submit a Request for Quotation (RFQ) for SY100E445JZ-TR 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 SY100E445JZ-TR reliable?

The price and inventory of SY100E445JZ-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SY100E445JZ-TR is usually 5 days.

3.What payment methods are accepted for SY100E445JZ-TR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SY100E445JZ-TR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SY100E445JZ-TR?

SY100E445JZ-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SY100E445JZ-TR 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 SY100E445JZ-TR?

For technical support, including SY100E445JZ-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SY100E445JZ-TR requirements.

6.How does Aetrix verify that SY100E445JZ-TR is sourced from the original manufacturer or authorized distributors?

All SY100E445JZ-TR 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 SY100E445JZ-TR meets industry standards.

7.What is the process for return or replacement of SY100E445JZ-TR?

All SY100E445JZ-TR units undergo pre-shipment inspection (PSI). If there is an issue with SY100E445JZ-TR, 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 SY100E445JZ-TR part is unused and in its original packaging.

Return procedure for SY100E445JZ-TR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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