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Home Products Integrated Circuits (ICs)Embedded - PLDs (Programmable Logic Device)~~EPF20K400GC655-1~~

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EPF20K400GC655-1 - Altera

Name: Altera EPF20K400GC655-1
Brand: Altera
SKU: EPF20K400GC655-1
Price: 989.27 USD
Availability: InStock
Rating: 5 (8 reviews)

Manufacturer Part Number: EPF20K400GC655-1

Manufacturer: Altera (Intel)

Allelco Part Number: 98D-EPF20K400GC655-1

Warranty: 1 Year Allelco Warranty - Find out more

Stock Status:: 42,082 pcs available, New & Original

Parts Description: LOADABLE PLD, 2.5NS CPGA655

Package: Bulk

Data sheet: -

RoHs Status

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In stock: 42082

Unit Price: $989.27
Subtotal: $0.00

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Quantity	Unit Price	Ext. Price
1+	$989.27	$989.27

The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

EPF20K400GC655-1 Tech Specifications
Altera - EPF20K400GC655-1 technical specifications, attributes, parameters and parts with similar specifications to Altera - EPF20K400GC655-1

Product Attribute	Attribute Value
Manufacturer	Altera (Intel)
Series	*

Product Attribute	Attribute Value
Package	Bulk

Environmental & Export Classifications

ATTRIBUTE	DESCRIPTION
RoHs Status	Not applicable
Moisture Sensitivity Level (MSL)	3 (168 Hours)
REACH Status	Vendor Undefined
HTSUS	0000.00.0000

Frequently Asked Questions(FAQ)

What are the key timing characteristics of the EPF20K400GC655-1 that impact high-speed system design?: The EPF20K400GC655-1 features a 2.5 ns clock-to-output delay, which enables operation in systems requiring sub-10 ns cycle times. This performance level supports synchronous designs with clock frequencies exceeding 200 MHz when combined with internal register setup times of approximately 1.8 ns. Designers should account for board-level signal propagation delays and clock skew to maintain timing margins in multi-chip interfaces.

How does the CPGA655 package of the EPF20K400GC655-1 influence thermal management and PCB layout decisions?: The CPGA655 ceramic pin grid array package provides excellent thermal conductivity and mechanical stability but requires precise PCB pad design and reflow profiling due to its non-solder-mask-defined pads. With a typical junction-to-case thermal resistance (θJC) of 1.2°C/W, the EPF20K400GC655-1 benefits from direct thermal via connections to internal ground planes, especially in applications exceeding 500 mW power dissipation.

Can the EPF20K400GC655-1 be used in systems requiring in-field reprogrammability, and what are the configuration constraints?: Yes, the EPF20K400GC655-1 supports in-system reconfiguration via JTAG or passive serial modes. However, reprogramming requires a stable 3.3V supply during the configuration cycle, and the device must remain within its recommended operating temperature range. Configuration data integrity should be verified through CRC checking, particularly in environments with elevated electromagnetic interference.

What are the implications of the MSL 3 rating for the EPF20K400GC655-1 during manufacturing and storage?: The moisture sensitivity level (MSL) 3 rating indicates that the EPF20K400GC655-1 can be exposed to ambient conditions for up to 168 hours after removal from its dry packaging before requiring a bake cycle. This allows standard pick-and-place assembly workflows but necessitates controlled humidity environments (<60% RH) and adherence to floor life tracking protocols to prevent popcorning during reflow.

How does the EPF20K400GC655-1 compare to modern FPGA alternatives in terms of power efficiency and logic density?: Compared to contemporary SRAM-based FPGAs, the EPF20K400GC655-1 exhibits higher static power consumption due to its EEPROM-based architecture, typically drawing 300–500 mW at full utilization. However, it offers zero standby power during configuration loss and faster boot times. Its 40,000 usable gates are suitable for legacy control logic integration but fall short of modern devices offering over 100K logic elements with dynamic power scaling.

What design considerations apply when interfacing the EPF20K400GC655-1 with 3.3V and 5V logic families?: The EPF20K400GC655-1 operates at 3.3V core and I/O voltages, making it compatible with 3.3V CMOS/TTL inputs. When connecting to 5V devices, level translation is required on input lines to prevent overvoltage stress, while outputs can typically drive 5V TTL inputs due to compatible high-level thresholds. Series termination resistors are recommended on high-capacitance loads to minimize reflections.

How does the non-RoHS status of the EPF20K400GC655-1 affect its suitability for new product development?: The EPF20K400GC655-1 contains lead-based solder in its CPGA package, making it non-compliant with RoHS directives for new commercial designs in regulated markets. It remains viable for legacy system support, military, or industrial applications where exemptions apply, but alternative RoHS-compliant FPGAs should be evaluated for new product introductions.

What verification steps are recommended before finalizing a design using the EPF20K400GC655-1?: Prior to production, engineers should validate timing closure using static timing analysis tools that account for the device’s 2.5 ns propagation delay and input setup/hold requirements. Power integrity simulations should model current transients during I/O switching, and configuration robustness should be tested under voltage droop and temperature cycling conditions to ensure reliable operation across the full industrial temperature range.

How does the EPF20K400GC655-1 perform in radiation-prone environments compared to antifuse-based PLDs?: Unlike antifuse-based devices, the EPF20K400GC655-1 uses EEPROM technology, which is susceptible to single-event upsets (SEUs) in high-radiation environments. While it lacks inherent radiation hardening, its non-volatile configuration reduces susceptibility to total ionizing dose effects. For space or avionics applications, additional error detection and periodic reconfiguration may be necessary.

What are the long-term availability and obsolescence risks associated with the EPF20K400GC655-1?: As a product from Altera’s legacy FLEX 20K series, the EPF20K400GC655-1 is no longer in active production and is classified as a mature component. Long-term supply depends on distributor inventory and potential last-time buy programs. Designers should consider pin-compatible drop-in replacements or migrate to current FPGA families with similar functionality to mitigate end-of-life risks.

Parts with Similar Specifications

The three parts on the right have similar specifications to Altera EPF20K400GC655-1

Product Attribute
Part Number	EPF20K400GC655-1	EPF10K70RC240-4	EPF10K70RC240-3N	EPF6010AFC100-2
Manufacturer	Altera	Intel	Intel	Intel
Series	*	FLEX-10K®	FLEX-10K®	FLEX 6000
Package	Bulk	Tray	Tray	Tray

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Customer Reviews

Evaluation: 10 Articles

Nath***rooks

Jun 11, 2026

Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.
Dani***alkerTech

Jun 1, 2026

Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.
Yuki***aka88

May 26, 2026

信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。
Stev***aker

May 20, 2026

Solid diode for power rectification. Works well in switching circuits.
Bran***Lewis

May 11, 2026

Compact FPGA with good performance. Suitable for basic signal processing tasks.
Oliv***arris

May 7, 2026

Reliable I/O expander. Works well in embedded control applications.
Jess***Jones

Apr 17, 2026

It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.
Mich***Smith

Apr 17, 2026

Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.
Aman***arris

Apr 3, 2026

It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.
Mike***nch

Apr 3, 2026

Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

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Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

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Delivery Method

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Common Countries Logistic Time Reference
Region	Country	Logistic Time(Day)
America	United States	5
America	Brazil	7
Europe	Germany	5
	United Kingdom	4
	Italy	5
Oceania	Australia	6
Oceania	New Zealand	5
Asia	India	4
Asia	Japan	4
Middle East	Israel	6

DHL & FedEx Shipment Charges Reference
Shipment charges(KG)	Reference DHL(USD$)
0.00kg-1.00kg	USD$30.00 - USD$60.00
1.00kg-2.00kg	USD$40.00 - USD$80.00
2.00kg-3.00kg	USD$50.00 - USD$100.00

Note:: The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.

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Electrostatic Discharge Protection and Handling

All electrostatic-sensitive components are handled in accordance with electrostatic discharge control procedures. The products are hermetically sealed in anti-static safe packaging to prevent electrostatic damage. Appropriate labeling is also applied for identification and traceability. This ensures product integrity during storage, handling and transportation.

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