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Renesas HXT5004A-DNT-F8
- Part No.:
- HXT5004A-DNT-F8
- Manufacturer:
- Renesas
- Category:
- Laser Drivers
- Package:
- -
- Datasheet:
-
HXT5004A-DNT-F8.pdf
- Description:
- HXT5004A-DNT-F8
- Quantity:
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Product details
Overview
HXT5004A-DNT-F8 from Integrated Device Technology (IDT) is a 4-channel VCSEL driver IC for 10 Gb/s optical transmitters, delivering 5 mA average and 5 mA modulation current per channel with 46 mW/channel power consumption. It supports common cathode and isolated VCSEL arrays, complies with QSFP MSA, InfiniBand QDR/FDR, and 40GBASE-SR4 standards, and is used in IEEE 802.3ba Ethernet transceivers and active optical cables.
For engineers reviewing the HXT5004A-DNT-F8 datasheet, HXT5004A-DNT-F8 pinout, HXT5004A-DNT-F8 application, or HXT5004A-DNT-F8 equivalent, key selection considerations include per-channel drive capability (5 mA avg / 5 mA mod), bare-die package constraints (2.05 mm × 1.67 mm), QSFP MSA compliance, and 2-wire interface control for compact optical module integration.
Technical Context
The HXT5004A-DNT-F8 integrates four independent CML-input laser drivers with on-chip drive control and supervision logic. Each channel operates at 10 Gb/s data rates and supports both common-cathode and isolated VCSEL configurations via configurable bias and modulation paths.
It implements a solder-bump bare-die form factor compliant with QSFP MSA mechanical and thermal requirements, and uses a 2-wire serial interface for real-time monitoring and adjustment of bias, modulation, and safety limits - enabling precise optical output control without external DACs or discrete supervision circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | 10 Gb/s per channel - supports 40G-SR4 parallel optical links using four lanes. |
| Avg Current | 5 mA per channel - sets baseline VCSEL bias for stable CW operation and low threshold jitter. |
| Modulation Current | 5 mA per channel - enables full NRZ optical modulation depth with controlled extinction ratio. |
| Power per Channel | 46 mW - allows thermal design of compact QSFP modules with ≤184 mW total driver dissipation. |
| Max Burn-in Current | 12 mA - defines safe stress-test limit during VCSEL array burn-in without damaging driver outputs. |
| Interface | 2-wire serial - provides digital control of all channels with minimal PCB routing and no dedicated SPI/I²C peripheral required. |
Pinout & Package
Bare die in tape format (HXT5004A-DNT-F8), 2.05 mm × 1.67 mm footprint, solder bump interconnect. No wire-bond pads; designed for flip-chip assembly onto substrate or carrier.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Supply rail | 1.8 V core supply for logic and driver stages; decoupling required within 1 mm of die edge. |
| GND | Reference plane | Dedicated ground bumps distributed across die perimeter to minimize inductance in high-speed switching paths. |
| INn | CML input | Differential CML-compatible input (n = 1–4); accepts AC-coupled 10 Gb/s NRZ signals with 100 Ω termination. |
| OUTn | VCSEL drive output | Current-mode output driving cathode of VCSEL array; supports common-cathode or isolated-anode topologies. |
| SCL/SDA | 2-wire interface | Shared bidirectional control bus for configuring bias, modulation, and fault reporting across all four channels. |
Key Features
| Feature | Design Value |
|---|---|
| Per-channel 5 mA avg / 5 mA mod drive | Enables direct interfacing with standard 10G VCSEL arrays without external current amplification or level shifting. |
| QSFP MSA & 40GBASE-SR4 compliance | Guarantees mechanical, thermal, and electrical interoperability with industry-standard 40G SR4 optical modules and host interfaces. |
| 2-wire serial control interface | Reduces module-level control wiring to two traces, simplifying substrate layout and supporting dynamic channel calibration. |
| Common-cathode & isolated VCSEL support | Eliminates need for separate driver variants when sourcing different VCSEL array suppliers or architectures. |
| Bare-die solder-bump packaging | Minimizes parasitic inductance/capacitance for >10 Gb/s signal integrity and enables ultra-thin optical subassemblies. |
Applications
| 40G-SR4 Optical Transceivers | InfiniBand QDR Active Cables |
|---|---|
Use Scenario: 40G Ethernet link between top-of-rack switch and server NIC using multimode fiber. IC Role / Device Role / Timing Role: VCSEL driver converting 4×10G NRZ electrical signals into parallel optical outputs for 4-lane VCSEL array. Use Value: Meets 40GBASE-SR4 eye mask and jitter specs while consuming only 184 mW total, enabling passive heat-sink-only thermal management. | Use Scenario: 40 Gb/s InfiniBand QDR interconnect inside HPC cluster chassis with <3 m reach. IC Role / Device Role / Timing Role: Laser driver providing precise, matched per-channel modulation for low-BER active copper cable assemblies. Use Value: 2-wire interface allows per-cable factory calibration of bias/modulation to compensate for VCSEL aging and temperature drift. |
| Proprietary Multi-Channel Modules | QSFP+ Optical Engine Subassembly |
Use Scenario: Custom 4-channel optical I/O for FPGA-based co-processing card requiring low-latency, deterministic timing. IC Role / Device Role / Timing Role: High-fidelity digital-to-optical converter with CML input compatibility and sub-10 ps channel-to-channel skew. Use Value: Symmetric pad layout and identical per-channel analog paths ensure <0.5 dB inter-channel optical power variation across temperature. | Use Scenario: Optical engine integrated into QSFP+ pluggable transceiver housing with tight 12.2 mm height constraint. IC Role / Device Role / Timing Role: Bare-die VCSEL driver mounted directly on ceramic substrate beneath VCSEL array for minimal optical path length. Use Value: 2.05 mm × 1.67 mm die size and solder-bump interconnect enable full optical engine stack height ≤8.5 mm - meeting QSFP+ mechanical spec. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar VCSEL driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX3999AETE+ | Single-channel, 10 Gb/s, 3.3 V supply, 12 mA max modulation current | Requires four discrete units for 40G; lacks integrated 2-wire supervision and QSFP MSA-specific layout optimization | Preferred for prototyping or low-volume designs where board space is unconstrained and per-channel tuning is needed. |
| SN65LVPE502RGZR | 4-channel CML redriver (not laser driver); no VCSEL bias/modulation control; 1.8 V supply | Cannot drive VCSELs directly; requires external laser driver stage; intended for signal retiming not optical conversion | Only suitable when optical drive function is handled separately and signal integrity restoration is the primary need. |
Compared with MAX3999AETE+ and SN65LVPE502RGZR, the HXT5004A-DNT-F8 uniquely integrates full 4-channel VCSEL drive, supervision, and QSFP MSA-compliant bare-die packaging - reducing component count, PCB area, and thermal footprint in production 40G optical modules.
Availability
HXT5004A-DNT-F8 is available at Aetrix Electronics and suitable for 40G-SR4 transceivers, InfiniBand QDR active cables, and proprietary multi-channel optical modules requiring stable component supply and qualified bare-die sourcing.
Supply support for HXT5004A-DNT-F8 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
Integrated Device Technology (IDT), now part of Renesas Electronics, is a fabless semiconductor company specializing in timing, memory interface, RF, and optical interconnect solutions.
The HXT5004A family was developed specifically for compact, low-power 40G optical transmitter modules targeting QSFP MSA and InfiniBand applications - emphasizing integration, thermal efficiency, and manufacturability in bare-die form.
FAQ
What is the operating temperature range for the HXT5004A-DNT-F8?
The HXT5004A-DNT-F8 is specified for operation from 0°C to +95°C ambient temperature. This range aligns with QSFP MSA thermal requirements for pluggable optical modules and ensures reliable performance in enterprise switch and server environments. The bare-die construction requires careful thermal interface design to maintain junction temperature within limits under full 4-channel load.
Does the HXT5004A-DNT-F8 support both common-cathode and isolated VCSEL arrays?
Yes, the HXT5004A-DNT-F8 explicitly supports both common-cathode and isolated VCSEL array configurations. Its output architecture allows flexible connection to either topology without external components, enabling single-driver qualification across multiple VCSEL suppliers and module designs. This dual-support capability is documented in the IDT product brief and confirmed in application schematics.
What interface protocol does the HXT5004A-DNT-F8 use for configuration and monitoring?
The HXT5004A-DNT-F8 uses a 2-wire serial interface (SCL/SDA) compatible with standard I²C timing but implemented with simplified command structure. It supports read/write access to bias current, modulation current, safety limits, and fault status registers for all four channels. No external level-shifting or pull-up resistors are required when interfaced to 1.8 V host controllers.
Is the HXT5004A-DNT-F8 pin-compatible with other members of the HXT5004 family?
Yes, the HXT5004A-DNT-F8 shares identical die layout, bump map, and electrical interface with HXT5004A-DNT (waffle pack version). Both use the same 2.05 mm × 1.67 mm footprint and solder-bump configuration. The only difference is packaging format - tape versus waffle pack - with no impact on assembly or electrical behavior.
What compliance standards does the HXT5004A-DNT-F8 meet?
The HXT5004A-DNT-F8 meets QSFP MSA mechanical and thermal specifications, InfiniBand QDR and FDR electrical interface requirements, and IEEE 40GBASE-SR4 optical transmitter standards. Compliance is verified through IDT's characterization reports and referenced in the official product brief dated May 22, 2017.
HXT5004A-DNT-F8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- -
- Packaging:
- Tray
- Product Status:
- Obsolete
- Type:
- -
- Data Rate:
- -
- Number of Channels:
- -
- Voltage - Supply:
- -
- Current - Supply:
- -
- Current - Modulation:
- -
- Current - Bias:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- -
- Mounting Type:
- -
HXT5004A-DNT-F8 FAQ
1.How can I place an order for HXT5004A-DNT-F8 through Aetrix?
Please submit a Request for Quotation (RFQ) for HXT5004A-DNT-F8 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 HXT5004A-DNT-F8 reliable?
The price and inventory of HXT5004A-DNT-F8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HXT5004A-DNT-F8 is usually 5 days.
3.What payment methods are accepted for HXT5004A-DNT-F8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HXT5004A-DNT-F8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HXT5004A-DNT-F8?
HXT5004A-DNT-F8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HXT5004A-DNT-F8 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 HXT5004A-DNT-F8?
For technical support, including HXT5004A-DNT-F8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HXT5004A-DNT-F8 requirements.
6.How does Aetrix verify that HXT5004A-DNT-F8 is sourced from the original manufacturer or authorized distributors?
All HXT5004A-DNT-F8 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 HXT5004A-DNT-F8 meets industry standards.
7.What is the process for return or replacement of HXT5004A-DNT-F8?
All HXT5004A-DNT-F8 units undergo pre-shipment inspection (PSI). If there is an issue with HXT5004A-DNT-F8, 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 HXT5004A-DNT-F8 part is unused and in its original packaging.
Return procedure for HXT5004A-DNT-F8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HXT5004A-DNT-F8 Tags
-
EPC21701
EPC
-
EPC21601
EPC
-
MAX3799ETJ+T
Analog Devices Inc./Maxim Integrated
-
AD9665ACPZ-REEL7
Analog Devices Inc.
-
MAX3740AETG+T
Analog Devices Inc./Maxim Integrated
-
MAX3795ETG+
Analog Devices Inc./Maxim Integrated
-
EPC21603
EPC
-
ONET8501VRGPT
Texas Instruments
-
MAX3738ETG+T
Analog Devices Inc./Maxim Integrated
-
SY88022ALMG-TR
Microchip Technology
-
ISL78365ARZ-T7A
Renesas
-
EPC21603ENGRT
EPC
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