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onsemi ESD4238MTTAG
 Exposed Pad.jpg)
- Part No.:
- ESD4238MTTAG
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- 16-WFDFN Exposed Pad
- Datasheet:
-
ESD4238MTTAG.pdf
- Description:
- TVS DIODE 10VC 16WDFN
- Quantity:
- Payment:
- Shipping:
Inventory:9,408
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Product details
Overview
ESD4238MTTAG from onsemi is a 4-channel differential ESD clamp array in a 16-lead WDFN package, designed for HDMI/DVI port protection with 100 Ω matched differential impedance, ≤2% channel-to-channel skew, and IEC 61000-4-2 Level 4 ESD immunity (20 kV contact / 25 kV air). It routes high-speed signals pass-through while clamping transients to +10 V / −1.9 V at 1 A.
For engineers reviewing the ESD4238MTTAG datasheet, pinout, applications, or equivalent options, this device is selected for low-capacitance (<0.4 pF per line), multi-strike robustness (>1000 strikes), and impedance-matched signal integrity in 100 Ω differential interfaces.
Technical Context
The ESD4238MTTAG implements a flow-through, impedance-matched clamp architecture where signal paths traverse the device with 100 Ω differential characteristic impedance and ±2% matching. Its bidirectional clamping diodes are integrated into series-inductive paths that actively limit residual current (IRES = 3.8 A at 8 kV) and reduce clamping voltage via inductive reactance cancellation of diode capacitance.
Each of its four differential channels supports both differential (100 Ω) and single-ended (50 Ω) configurations. The GND pad provides low-inductance return to chassis shield, and all I/O pins withstand ≥1000 IEC 61000-4-2 Level 4 contact discharges without parameter degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ESD Rating | IEC 61000-4-2 Level 4: 20 kV contact / 25 kV air discharge - ensures system-level compliance for external ports. |
| Differential Impedance | 100 Ω ±2% - matches HDMI/DVI differential pairs without external termination or layout tuning. |
| Clamp Voltage | +10 V / −1.9 V at 1 A (8/20 µs) - limits transient overvoltage seen by downstream ASIC I/O cells. |
| Dynamic Resistance | 2.0 Ω (positive) / 0.7 Ω (negative) - enables fast, low-loss shunting of ESD current away from protected circuitry. |
| Signal Path Capacitance | <0.4 pF per pin - preserves signal integrity up to 3+ Gbps without measurable insertion loss or reflection. |
| Multi-Strike Endurance | >1000 ESD strikes at 8 kV contact - maintains full electrical specs post-stress, enabling long-life field reliability. |
Pinout & Package
ESD4238MTTAG uses a RoHS-compliant, Pb-free 16-lead WDFN package (4.0 × 1.6 mm, 0.5 mm pitch, case 511AU) with exposed thermal pad (GND) for low-inductance grounding and thermal dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | In_1+, In_1− | ASIC-side differential input pair - connects directly to HDMI/DVI receiver I/O pins inside system. |
| 3, 4 | In_2+, In_2− | ASIC-side differential input pair - second channel for TMDS or auxiliary data lanes. |
| 5, 6 | In_3+, In_3− | ASIC-side differential input pair - third channel for TMDS or clock lane. |
| 7, 8 | In_4+, In_4− | ASIC-side differential input pair - fourth channel for DDC/CEC or auxiliary signaling. |
| 9–16 | Out_4− to Out_1+ | Connector-side differential outputs - routed to HDMI/DVI receptacle pins with matched trace lengths. |
| PAD | GND | Exposed thermal pad - must be soldered to solid ground plane for ESD current return and thermal stability. |
Key Features
| Feature | Design Value |
|---|---|
| Pass-through impedance-matched routing | Enables direct in-line placement between connector and ASIC without stubs or vias, eliminating impedance discontinuities. |
| Channel-to-channel impedance match | ≤2% deviation across all four differential pairs - ensures uniform signal skew and timing alignment for multi-lane interfaces. |
| Integrated bidirectional clamping | No external bypass capacitors required - Zener-based clamping handles both positive and negative ESD transients on each line. |
| Low dynamic clamping resistance | Sub-1 Ω negative RDYN reduces voltage overshoot during fast-rising ESD events, protecting sensitive 1.2 V/1.8 V I/O. |
| RoHS-compliant WDFN package | 16-lead, 4×1.6 mm footprint with exposed GND pad - supports automated assembly and high-density PCB layouts. |
Applications
| HDMI Interface Protection | DVI Port ESD Hardening |
|---|---|
Use Scenario: Protecting HDMI 1.4/2.0 source outputs in set-top boxes and digital TVs against user-handling ESD events at the panel-mounted receptacle. IC Role / Device Role / Timing Role: Signal-pass-through ESD clamp placed between HDMI connector and SoC PHY, preserving 3.4 Gbps TMDS eye diagram integrity. Use Value: Maintains <0.4 pF loading and 100 Ω differential impedance to prevent signal reflection, jitter, or bit errors under ESD stress. | Use Scenario: Securing DVI-D dual-link ports in industrial monitors and medical imaging displays where repeated cable insertion causes cumulative ESD exposure. IC Role / Device Role / Timing Role: Four-channel bidirectional clamp for all 24 TMDS lines (including clock), routed in matched-length traces with no added termination components. Use Value: Eliminates need for discrete 50 Ω resistors and bypass caps per channel, reducing BOM count and PCB area by >65%. |
| Removable Storage Interface | Digital Camcorder I/O Protection |
Use Scenario: ESD protection for USB 3.0 SuperSpeed differential pairs and HDMI micro-out ports on portable SSD enclosures and docking stations. IC Role / Device Role / Timing Role: Dual-role clamp supporting both 5 Gbps USB SS lanes and 1080p HDMI video lanes using same 100 Ω matched architecture. Use Value: Single-component solution avoids separate ESD arrays for USB and HDMI, simplifying layout and qualification testing. | Use Scenario: Protecting HDMI output and SD card interface lines in consumer camcorders subjected to frequent handling and environmental ESD. IC Role / Device Role / Timing Role: Clamp array mounted adjacent to micro-HDMI connector and SDIO bus, with GND pad tied to metal chassis for lowest possible loop inductance. Use Value: Withstands >1000 ESD strikes without parameter shift - critical for field-repairable devices requiring multi-year service life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar differential ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPD4S012DRBR | 4-channel, 1.8 V compatible, lower 0.25 pF capacitance but only 12 kV contact ESD rating; no differential impedance matching. | Targeted at USB 2.0/3.0 and DisplayPort, not optimized for HDMI 100 Ω differential routing. | Select when ultra-low capacitance dominates over ESD robustness and impedance matching. |
| SP3243EEN-L | 4-channel, 15 kV contact ESD rating, 0.35 pF typical capacitance, but lacks 100 Ω differential impedance specification and channel matching. | Suitable for general-purpose high-speed data lines (e.g., LVDS, MIPI), not HDMI/DVI-specific layout requirements. | Select for cost-sensitive designs where exact 100 Ω matching and ≤2% skew are non-critical. |
Compared with TPD4S012DRBR and SP3243EEN-L, ESD4238MTTAG uniquely delivers verified 100 Ω differential impedance with ≤2% matching and full IEC 61000-4-2 Level 4 immunity - making it the only option qualified for production HDMI/DVI port hardening without signal integrity trade-offs.
Availability
ESD4238MTTAG is available at Aetrix Electronics and suitable for HDMI interface protection, DVI port hardening, removable storage interface design, and digital camcorder I/O protection requiring stable component supply and long-term lifecycle support.
Supply support for ESD4238MTTAG 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
onsemi (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient power management, analog, sensor, and ESD protection solutions for automotive, industrial, and consumer markets.
The ESD4238MTTAG belongs to onsemi's precision ESD clamp array product line, engineered specifically for high-speed differential interfaces like HDMI and DVI where signal integrity, impedance matching, and multi-strike reliability are mandatory.
FAQ
What is the maximum operating temperature range for ESD4238MTTAG?
The ESD4238MTTAG is rated for continuous operation from −40 °C to +85 °C. This range covers standard commercial and extended industrial environments, including set-top boxes, digital TVs, and portable camcorders where ambient temperatures may fluctuate significantly during use or storage. All electrical parameters in the datasheet are guaranteed across this full range unless otherwise noted.
Does ESD4238MTTAG require external bypass capacitors for ESD protection?
No, ESD4238MTTAG does not require external bypass capacitors. Its internal Zener-based bidirectional clamping architecture handles both positive and negative ESD transients on each I/O line without external components. This eliminates the need for discrete 0.1 µF ceramic capacitors typically used with older ESD diodes, simplifying PCB layout and reducing BOM count.
Can ESD4238MTTAG be used for single-ended signal lines such as USB 2.0 or SDIO?
Yes, ESD4238MTTAG can protect single-ended lines: each individual channel provides 50 Ω characteristic impedance matching when used in single-ended mode, as confirmed in the datasheet's "NOTES" section. This makes it suitable for USB 2.0 D+/D−, SDIO CMD/DATA, or other 50 Ω-controlled single-ended high-speed buses requiring low-capacitance ESD protection.
What is the meaning of "flow-through routing" in ESD4238MTTAG's architecture?
"Flow-through routing" means the signal path enters the ESD4238MTTAG on one side (In_x±) and exits on the opposite side (Out_x±) in a straight, unbroken trace - no internal vias, stubs, or bends. This preserves signal integrity by minimizing parasitic inductance and capacitance, enabling clean 3+ Gbps HDMI signal transmission while maintaining tight impedance control and low skew across all four channels.
How is the GND pad of ESD4238MTTAG intended to be connected on the PCB?
The exposed GND pad of ESD4238MTTAG must be soldered to a solid, low-impedance ground plane with multiple thermal vias. This connection serves two critical functions: (1) providing the primary low-inductance return path for ESD current shunted through the clamps, and (2) stabilizing thermal performance during multi-strike operation. Failure to properly connect the pad degrades ESD immunity and may cause parameter drift after repeated strikes.
ESD4238MTTAG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- 16-WFDFN Exposed Pad
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Steering (Rail to Rail)
- Unidirectional Channels:
- 8
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- -
- Voltage - Breakdown (Min):
- 5V
- Voltage - Clamping (Max) @ Ipp:
- 10V
- Current - Peak Pulse (10/1000µs):
- 1A (8/20µs)
- Power - Peak Pulse:
- -
- Power Line Protection:
- Yes
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-WDFN (4x1.6)
ESD4238MTTAG FAQ
1.How can I place an order for ESD4238MTTAG through Aetrix?
Please submit a Request for Quotation (RFQ) for ESD4238MTTAG 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 ESD4238MTTAG reliable?
The price and inventory of ESD4238MTTAG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ESD4238MTTAG is usually 5 days.
3.What payment methods are accepted for ESD4238MTTAG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ESD4238MTTAG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ESD4238MTTAG?
ESD4238MTTAG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ESD4238MTTAG 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 ESD4238MTTAG?
For technical support, including ESD4238MTTAG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ESD4238MTTAG requirements.
6.How does Aetrix verify that ESD4238MTTAG is sourced from the original manufacturer or authorized distributors?
All ESD4238MTTAG 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 ESD4238MTTAG meets industry standards.
7.What is the process for return or replacement of ESD4238MTTAG?
All ESD4238MTTAG units undergo pre-shipment inspection (PSI). If there is an issue with ESD4238MTTAG, 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 ESD4238MTTAG part is unused and in its original packaging.
Return procedure for ESD4238MTTAG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ESD4238MTTAG Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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ESD5Z3.3T1G
onsemi
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D5V0H1B2LP-7B
Diodes Incorporated
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D5V0P1B2LP-7B
Diodes Incorporated
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DESD5V0U1BA-7
Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
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DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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D5V0L1B2WS-7
Diodes Incorporated
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