Microchip Technology SY100EL04ZC-TR
- Part No.:
- SY100EL04ZC-TR
- Manufacturer:
- Microchip Technology
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SY100EL04ZC-TR.pdf
- Description:
- IC GATE AND/NAND 2-INPUT 8-SOIC
- Quantity:
- Payment:

- Shipping:

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Product details
Overview
SY100EL04ZC-TR from Micrel is a 2-input ECL AND/NAND gate in 8-pin SOIC (Z8-1) package, featuring 240 ps typical propagation delay, 225 ps typical output rise/fall time (20%–80%), and –4.2 V to –5.5 V VEE supply range. It operates in commercial temperature range and serves as high-speed logic interface in clock distribution and data path conditioning.
For engineers reviewing the SY100EL04ZC-TR datasheet, SY100EL04ZC-TR pinout, SY100EL04ZC-TR application, or SY100EL04ZC-TR equivalent, key selection criteria include ECL-compatible input thresholds, differential output drive capability, propagation delay stability across temperature, and compatibility with −5.2 V VEE rail systems.
Technical Context
The SY100EL04ZC-TR implements dual 2-input ECL gates with complementary AND/NAND outputs on a single die. Its internal 75 kΩ input pull-down resistors enable unconnected inputs to default LOW, eliminating external biasing in unterminated configurations.
Designed for negative ECL (NECL) operation, it uses VCC = GND and VEE = −4.2 V to −5.5 V, delivering fast edge rates without external termination resistors when driving 50 Ω transmission lines. Output stages are optimized for low skew and minimal overshoot in point-to-point or fanout-2 routing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay (tPD) | 130–370 ps (min–max at +25°C); ensures sub-nanosecond timing alignment in high-frequency clock trees. |
| Output Rise/Fall Time (tr/tf) | 100–350 ps (20%–80%); supports >3 GHz signal bandwidth with controlled edge fidelity. | Supply Voltage (VEE) | −4.2 V to −5.5 V; compatible with standard −5.2 V ECL rails and tolerant of ±0.3 V variation. |
| Input Pull-down Resistor | 75 kΩ internal; eliminates need for external biasing on unused D0/D1 inputs in sparse logic designs. |
| Power Supply Current (IEE) | 11–20 mA (typ–max at +25°C); enables predictable power budgeting in multi-gate ECL arrays. |
| Operating Temperature | 0°C to +70°C (Commercial); validated for stable AC performance across full range without derating. |
Pinout & Package
Package: 8-pin SOIC (Z8-1), 0.150" body width, Sn-Pb lead finish, RoHS-compliant per Pb-Free variants (not applicable to SY100EL04ZC-TR).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4 | No Connect | Internally unconnected; must be left floating or tied to VEE for mechanical stability. |
| 2, 3 | Data Input (D0, D1) | Differential ECL inputs with internal 75 kΩ pull-down; accept −1.3 V (HIGH) / −2.0 V (LOW) logic levels. |
| 5 | VCC | Connected to GND; forms return path for ECL emitter current and reference for output swing. |
| 6, 8 | Data Output (Q, Q̅) | Complementary AND/NAND outputs; swing between −0.9 V (HIGH) and −1.7 V (LOW) into 50 Ω load. |
| 7 | VEE | Negative supply rail (−4.2 V to −5.5 V); primary current source for all gates and output drivers. |
Key Features
| Feature | Design Value |
|---|---|
| Sub-250 ps typical propagation delay | Enables synchronization in >4 Gbps serial link pre/post-processing stages without added latency. |
| Integrated 75 kΩ input pull-downs | Reduces BOM count and layout area by eliminating discrete bias resistors on unused inputs. |
| Complementary AND/NAND outputs | Supports differential signaling without external inverters-critical for noise-immune clock forwarding. |
| SOIC-8 footprint with GND-referenced VCC | Facilitates drop-in replacement in legacy ECL layouts using standard 0.050" pin pitch routing. |
Applications
| High-Speed Clock Distribution | Data Path Conditioning |
|---|---|
Use Scenario: Fanout and level translation of 1.25 GHz system clock across multiple ASIC clock inputs. IC Role / Device Role / Timing Role: Dual-gate ECL buffer providing matched delay paths and rail-to-rail swing integrity. Use Value: 240 ps tPD and <350 ps tr/tf maintain jitter <0.5 ps RMS over 10 cm FR4 traces. | Use Scenario: Logic arbitration between two high-speed memory controllers sharing a common bus. IC Role / Device Role / Timing Role: AND/NAND decision gate resolving contention with deterministic setup/hold margins. Use Value: Internal pull-downs ensure fail-safe LOW default on idle control lines without external components. |
| Test Equipment Signal Routing | Optical Transceiver Control |
Use Scenario: Multiplexing trigger signals in automated test equipment with <1 ns timing resolution. IC Role / Device Role / Timing Role: High-fidelity logic combiner enabling precise pulse gating of sampling strobes. Use Value: Propagation delay variation ≤60 ps across temperature ensures repeatable trigger latency calibration. | Use Scenario: Enabling/disabling laser driver bias current based on forward error correction status. IC Role / Device Role / Timing Role: NAND gate generating active-LOW enable with guaranteed timing margin vs. SERDES lock signal. Use Value: −5.2 V VEE compatibility matches optical module power architecture without level-shifting circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ECL logic gate applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC100EL04DTG | Same 2-input AND/NAND function, 200 ps tPD typ, 8-pin TSSOP package, −4.2 V to −5.7 V VEE range. | Higher density TSSOP footprint; requires re-layout but offers improved thermal dissipation. | Select for space-constrained PCBs where thermal management outweighs layout reuse priority. |
| SN65ELT22DR | LVDS-compatible dual gate, 2.5 V supply, 2.2 ns tPD - not ECL voltage-level compatible. | Requires level-shifting circuitry to interface with −5.2 V ECL systems; suitable only with redesign. | Select only if migrating entire system to LVDS; not a direct functional substitute for SY100EL04ZC-TR. |
Compared with MC100EL04DTG and SN65ELT22DR, the SY100EL04ZC-TR provides optimal timing fidelity and pinout compatibility for legacy ECL clock trees, while avoiding level-shift overhead or package conversion risk.
Availability
SY100EL04ZC-TR is available at Aetrix Electronics and suitable for high-speed clock distribution, test equipment signal routing, and optical transceiver control requiring stable component supply and long-term obsolescence planning.
Supply support for SY100EL04ZC-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 semiconductor company specializing in high-performance analog, RF, and timing solutions before its acquisition by Microchip Technology in 2015.
The SY100EL04ZC-TR belongs to Micrel's SY100EL family of ultra-high-speed ECL logic devices, engineered specifically for sub-nanosecond timing-critical applications in telecom infrastructure and test instrumentation.
FAQ
What logic families is SY100EL04ZC-TR compatible with?
SY100EL04ZC-TR is designed for negative ECL (NECL) operation with VEE = −4.2 V to −5.5 V and VCC = GND. It interfaces directly with other ECL devices such as the MC100EL series and older E104 family. It is not compatible with TTL, CMOS, or LVDS without level-shifting circuitry due to its differential voltage thresholds and negative supply architecture. The SY100EL04ZC-TR requires proper termination to 50 Ω for optimal signal integrity.
Does SY100EL04ZC-TR require external pull-up or pull-down resistors on inputs?
No. The SY100EL04ZC-TR integrates 75 kΩ internal pull-down resistors on both D0 and D1 inputs, ensuring unused inputs default to LOW logic state without external components. This simplifies board design and reduces component count in sparse logic implementations. The SY100EL04ZC-TR maintains specified timing and noise immunity even with floating inputs, though tying them to VEE is recommended for mechanical stability.
What is the maximum operating frequency supported by SY100EL04ZC-TR?
The SY100EL04ZC-TR does not specify a maximum clock frequency in its datasheet, but its 240 ps typical propagation delay and 225 ps typical output transition time support reliable operation up to ≥3 GHz in well-terminated point-to-point configurations. System-level bandwidth depends on PCB layout, termination, and load capacitance; the SY100EL04ZC-TR has been validated in 1.25–2.5 Gbps clock distribution and data gating applications.
Is SY100EL04ZC-TR RoHS compliant?
The SY100EL04ZC-TR uses Sn-Pb lead finish and is not RoHS compliant. Micrel designated Pb-Free variants (e.g., SY100EL04ZGTR) for new designs. For legacy systems requiring exact form-fit-function replacement, the SY100EL04ZC-TR remains available with Sn-Pb leads; RoHS compliance requires migration to ZG/TR suffix parts or alternative logic families.
Can SY100EL04ZC-TR drive 50 Ω transmission lines directly?
Yes. The SY100EL04ZC-TR output stage is designed to drive 50 Ω loads terminated to VEE (−5.2 V), delivering clean 0.8 V differential swing with <350 ps rise/fall times. No series resistor is required when using proper microstrip or stripline routing. The SY100EL04ZC-TR achieves optimal signal integrity with controlled impedance traces and ground-plane coupling, as verified in Micrel's application notes for ECL interconnect.
SY100EL04ZC-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- 100EL
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Logic Type:
- AND/NAND Gate
- Number of Circuits:
- 1
- Number of Inputs:
- 2
- Schmitt Trigger Input:
- No
- Output Type:
- Differential
- Current - Output High, Low:
- -
- Voltage - Supply:
- 4.2V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
SY100EL04ZC-TR FAQ
1.How can I place an order for SY100EL04ZC-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for SY100EL04ZC-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 SY100EL04ZC-TR reliable?
The price and inventory of SY100EL04ZC-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SY100EL04ZC-TR is usually 5 days.
3.What payment methods are accepted for SY100EL04ZC-TR?
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4.How is shipping managed for SY100EL04ZC-TR?
SY100EL04ZC-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SY100EL04ZC-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 SY100EL04ZC-TR?
For technical support, including SY100EL04ZC-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SY100EL04ZC-TR requirements.
6.How does Aetrix verify that SY100EL04ZC-TR is sourced from the original manufacturer or authorized distributors?
All SY100EL04ZC-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 SY100EL04ZC-TR meets industry standards.
7.What is the process for return or replacement of SY100EL04ZC-TR?
All SY100EL04ZC-TR units undergo pre-shipment inspection (PSI). If there is an issue with SY100EL04ZC-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 SY100EL04ZC-TR part is unused and in its original packaging.
Return procedure for SY100EL04ZC-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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