onsemi ESD8708MUTAG

Overview

ESD8708MUTAG from onsemi is an ultra-low-capacitance ESD protection diode array designed to safeguard four high-speed differential data pairs (eight I/O lines) in voltage-sensitive interfaces. It delivers 0.5 pF max capacitance (I/O-to-GND), ±30 kV IEC 61000−4−2 contact ESD protection, and 4.9–6.8 V clamping voltage at 6.5 A peak pulse, enabling robust protection for Gigabit Ethernet, V-by-One HS, LVDS, and DisplayPort signal paths.

For engineers reviewing the ESD8708MUTAG datasheet, pinout, applications, or equivalent options, key selection criteria include low-clamp-voltage performance under 6.5 A IEC 61000−4−5 surge, sub-0.5 pF high-frequency capacitance stability up to 5 GHz, latch-up-free operation in V-by-One HS/LVDS/DisplayPort, and UDFN14 flow-through routing compatibility with matched trace-length PCB layouts.

Technical Context

The ESD8708MUTAG employs a snap-back SCR-based structure optimized for high-speed differential signaling, with verified latch-up immunity in V-by-One HS, LVDS, and DisplayPort applications per load-line analysis. Its dynamic resistance is 0.25–0.31 Ω, enabling tight clamping (VC = VHOLD + IPP × RDYN) across IEC-compliant ESD and lightning transients.

It operates across −55 °C to +125 °C junction temperature, supports 3.3 V working peak voltage, and maintains 1.19 V holding voltage with 20 mA holding current-critical for preventing false triggering during normal signal swing while ensuring rapid turn-on during ESD events.

Key Specifications

Pinout & Package

ESD8708MUTAG is housed in a 14-pin UDFN package (5.5 mm × 1.5 mm, 0.5 mm pitch, Case 517CN) with exposed thermal pad. The flow-through layout enables straight-line routing of differential pairs, minimizing stubs and impedance discontinuities.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ESD protection applications.

Compared with ESD8004MUTAG and ESD8104MUTAG, ESD8708MUTAG uniquely balances 3.3 V VRWM, 6.5 A surge capability, and proven latch-up immunity across V-by-One HS, LVDS, and DisplayPort-making it the sole recommended option for multi-standard high-speed display and data link protection where interface voltage and surge level align.

Availability

ESD8708MUTAG is available at Aetrix Electronics and suitable for Gigabit Ethernet, V-by-One HS, and DisplayPort designs requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.

Supply support for ESD8708MUTAG 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 delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.

The ESD8708MUTAG belongs to onsemi's 8000-series SCR-based ESD protection portfolio, engineered specifically for latch-up-free, ultra-low-capacitance protection of high-speed differential interfaces including V-by-One HS, LVDS, and DisplayPort.

FAQ

What is the maximum operating junction temperature for ESD8708MUTAG?

The ESD8708MUTAG has a specified operating junction temperature range of −55 °C to +125 °C. This wide thermal envelope allows reliable deployment in harsh industrial and automotive cabin environments. The device's thermal performance is enhanced by its UDFN14 package with exposed copper pad, which facilitates efficient heat dissipation into the PCB ground plane during transient events. ESD8708MUTAG maintains full electrical specifications across this entire range.

Does ESD8708MUTAG support HDMI applications?

No, ESD8708MUTAG is not suitable for HDMI applications. Application Note AND9116/D and Table 1 in the datasheet explicitly state that ESD8708MUTAG carries potential latch-up risk in HDMI 1.4/1.3a TMDS interfaces due to insufficient holding current margin. For HDMI, onsemi recommends ESD8104MUTAG or ESD8040. Using ESD8708MUTAG in HDMI may result in destructive latch-up after ESD stress, compromising system reliability.

How many differential pairs does ESD8708MUTAG protect, and how are they mapped to pins?

ESD8708MUTAG protects four differential pairs (eight total I/O lines). Pin mapping is: Pair 1 (Pins 1,2), Pair 2 (Pins 4,5), Pair 3 (Pins 7,8), Pair 4 (Pins 10,11). All eight I/O pins connect to GND via internal SCR structures. Ground terminals are Pins 3,6,9,12,13,14 - only one requires PCB connection for full functionality, simplifying layout.

What is the clamping voltage of ESD8708MUTAG at 6.5 A peak pulse current?

The clamping voltage of ESD8708MUTAG is specified as 4.9 V (min) to 6.8 V (max) at 6.5 A peak pulse current (8/20 µs waveform). This value is derived from VC = VHOLD + (IPP × RDYN), where VHOLD = 1.19 V and RDYN = 0.25–0.31 Ω. This tightly bounded clamping window ensures downstream 3.3 V receivers remain within absolute maximum ratings during IEC 61000−4−5 lightning surges.

Is ESD8708MUTAG compatible with high-frequency signals up to 5 GHz?

Yes, ESD8708MUTAG exhibits 0.31 pF typical capacitance at 5.0 GHz (I/O-to-GND), confirmed in the Electrical Characteristics table. Its UDFN14 flow-through package minimizes parasitic inductance, and Figure 13 shows stable capacitance down to 0.30 pF across 2.5–5.0 GHz. Measured insertion loss remains < −2.5 dB up to 8 GHz (Figure 14), validating suitability for multi-gigabit serial links including V-by-One HS and DisplayPort 1.4.