AVAGO HCPL-5400
- Single-channel hermetically sealed very high speed logic gate optocoupler — 40 Mbit/s
- Active totem pole output, three-state option available — no pull-up resistor required
- 500 V/µs minimum common mode rejection, 1,500Vdc isolation withstand voltage
- Compatible with TTL, STTL, LSTTL, and HCMOS logic — guaranteed −55°C to +125°C
- MIL-PRF-38534 Class H and K certified, QML-38534 listed, dual-marked with DESC Drawing Number
Avago Technologies (now Broadcom) developed the HCPL-5400 as the hermetically sealed, militarily qualified counterpart to the commercial HCPL-2400 — a very high speed logic gate optocoupler that raises the data rate ceiling from the 5 MBd of the HCPL-5201 family to 40 Mbit/s, addressing the isolation requirements of high-throughput defense data buses, radar front-end interfaces, and avionics digital backplanes. The HCPL-5400 is available from stock at Sparkle Electronics, a specialized distributor of high-reliability and military-grade electronic components serving defense prime contractors, avionics OEMs, and government procurement programs worldwide. Manufactured and tested on a MIL-PRF-38534 certified line and included in the DESC Qualified Manufacturers List QML-38534 for hybrid microcircuits, this device is dual-marked with both the Avago/Broadcom part number and the DESC Drawing Number — providing the procurement traceability required by defense contracts subject to DLA QML sourcing requirements.
Where the HCPL-5201 serves isolation applications with 5 MBd signal rates, the HCPL-5400 is specified for the next tier of defense signal chain requirements: high-speed logic system isolation, isolated bus drivers for networking applications, pulse transformer replacement in digital signal paths, and digital isolation for A/D and D/A conversion interfaces in radar and electronic warfare systems and high-throughput avionics systems. Its high radiation immunity further qualifies it for satellite and space vehicle applications where total ionizing dose presents a component reliability risk. Contact Sparkle Electronics to confirm stock and request a same-day quote.
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Speed Is the Differentiator: Where the HCPL-5400 Fits in Hermetic Optocoupler Selection
Defense signal chain engineers selecting hermetic optocouplers face a fundamental choice between isolation speed tiers. The HCPL-5201 handles 5 MBd — sufficient for low-rate logic isolation, configuration data, and status signaling. The HCPL-5400 operates at 40 Mbit/s typical, making it the correct selection when the isolated logic interface must handle high-speed serial data, fast pulse trains, or tight timing budgets that would cause unacceptable latency at 5 MBd. Both devices are MIL-PRF-38534 qualified and hermetically sealed; the selection is driven entirely by the signal throughput requirement of the application. Procurement engineers sourcing HCPL-5400 in stock, Avago 40 Mbit/s hermetic optocoupler, or MIL-PRF-38534 very high speed optocoupler distributor will find Sparkle Electronics maintains ready inventory. Submit an inquiry for pricing and stock confirmation within 24 hours.
CMR Trade-off at High Speed: Understanding 500 V/µs vs. 10,000 V/µs
The HCPL-5400’s minimum CMR is 500 V/µs guaranteed — significantly lower than the >10,000 V/µs typical of the HCPL-5201 family. This is a deliberate architecture trade-off: achieving 40 Mbit/s data rates requires detector circuit optimizations that reduce the CMR margin available in lower-speed designs. For applications where both high data rate and very high CMR are required, the system design must account for this constraint through careful board-level shielding, ground plane management, and application circuit design. For aerospace and defense applications where signal rates are moderate and CMR is the primary isolation concern, the AVAGO HCPL-5201 remains the appropriate specification.
HCPL-5400 vs. HCPL-5201: Choosing the Right Hermetic Optocoupler
| Parameter | HCPL-5400 | HCPL-5201 |
|---|---|---|
| Manufacturer | Avago / Broadcom | Avago / Broadcom |
| Availability | In Stock at Sparkle | In Stock at Sparkle |
| Data Rate | 40 Mbit/s typical | 5 MBd typical |
| CMR (min) | 500 V/µs | 1 kV/µs (DigiKey) / >10 kV/µs typical |
| Isolation Voltage | 1,500Vdc | 1,500Vdc |
| Output | Totem pole + tri-state | Totem pole + tri-state |
| Package | Hermetic ceramic DIP | Hermetic ceramic 8-pin CDIP |
| Temperature | −55°C to +125°C | −55°C to +125°C |
| Reliability | MIL-PRF-38534 Class H/K | MIL-PRF-38534 Class H/K |
| QML | QML-38534 | QML-38534 |
| SMD | DESC Drawing Number | 5962-88768 |
| Logic Compatibility | TTL, STTL, LSTTL, HCMOS | LSTTL, TTL, CMOS |
| Radiation Immunity | High | Standard |
The HCPL-5400 adds STTL and HCMOS compatibility alongside the standard LSTTL/TTL logic families, broadening its interface compatibility in modern defense embedded systems where HCMOS logic families are prevalent. The active totem pole output eliminates the pull-up resistor required by open-collector designs, reducing board component count in systems with many isolated logic channels.
MIL-PRF-38534 Class H vs. Class K for Defense Procurement
As with the HCPL-5201, the HCPL-5400 is available at both Class H and Class K screening levels. Class H covers the full military temperature range with lot-controlled screening appropriate for the large majority of defense and avionics programs. Class K applies the most stringent DLA testing level for space, strategic, and highest-reliability programs. Sparkle Electronics can supply either class level with full conformance documentation. For satellite and space programs requiring Class K qualification, confirm availability and lead time directly with our procurement team.
Frequently Asked Questions
What does HCPL-5400 decode to?
HCPL = Hewlett-Packard Coupled Product Line (original HP optocoupler series designation, now Broadcom); 54 = hermetically sealed very high speed logic gate optocoupler family; 00 = single-channel variant. The HCPL-5401 is the dual-channel version; the HCPL-5430 and HCPL-5431 are related hermetic variants in the same family.
Where can I buy HCPL-5400 in stock?
Sparkle Electronics stocks the HCPL-5400 for defense and aerospace procurement. Contact our team for current pricing, class level availability, quantity, and confirmed lead time. We serve defense prime contractors, government procurement offices, and avionics integrators globally with same-day response on qualified inquiries.
What is the relationship between HCPL-5400 and HCPL-2400?
The HCPL-5400 is the hermetically sealed, MIL-PRF-38534 qualified version of the HCPL-2400. They share identical functional architecture and are pin-compatible — the hermetic ceramic package, military temperature range, and QML-38534 certification are what distinguish the HCPL-5400 from its commercial plastic-packaged counterpart. Existing HCPL-2400 designs can be upgraded to HCPL-5400 for programs requiring hermetic packaging without circuit redesign.
What is the difference between MIL-PRF-38534 Class H and Class K?
Class H is the standard high-reliability military screening level for hybrid microcircuits, covering lot-controlled burn-in, temperature testing, and hermeticity verification across the full military range. Class K is the highest DLA screening level, adding additional qualification tests including extended burn-in and more comprehensive environmental stress screening — appropriate for space, strategic missile, and life-critical applications where even Class H margin is insufficient. Both classes provide QML-38534 traceability; the program specification defines which is required.
Does the HCPL-5400 require a pull-up resistor on the output?
No. The active totem pole output drives both logic high and logic low states actively, eliminating the need for an external pull-up resistor required by open-collector output designs. This simplifies board layout and reduces component count in systems with multiple isolated logic channels — a practical advantage in high-density avionics and defense PCB designs.
Is HCPL-5400 suitable for space applications?
Yes. The HCPL-5400’s high radiation immunity, MIL-PRF-38534 Class K availability, hermetic ceramic packaging, and full military temperature range (−55°C to +125°C) make it suitable for satellite and space vehicle applications. For space programs, Class K screening should be specified and confirmed with Sparkle Electronics for availability. Contact us for space-grade procurement support.
Sourcing HCPL-5400 for a high-speed defense or space isolation requirement? Sparkle Electronics stocks Avago/Broadcom hermetic optocouplers — both 5 MBd and 40 Mbit/s families — with full MIL-PRF-38534 and QML-38534 documentation for DLA procurement. Submit an inquiry — same-day response on pricing, class level, and lead time.
