Name: XC3S400-4TQ144C
Brand: AMD
SKU: XC3S400-4TQ144C
Availability: LimitedAvailability

Application Context

The XC3S400-4TQ144C has been deployed across mature system architectures that remain in active service within industrial and embedded environments. Given its lifecycle stage, this FPGA is most commonly sourced today to support long-term maintenance programs, spare inventory replenishment, and controlled replacement of field-deployed units. Procurement decisions for this device typically prioritize continuity, traceability, and lot-level verification to ensure consistency with existing hardware baselines.

Technical Specifications

Manufacturer	AMD
Part Number	XC3S400-4TQ144C
Series	Spartan®-3
Indicated Status	Mature/Legacy (verification required)
Package / Case	144-LQFP
Temperature Range	0°C ~ 85°C (TJ)
Logic Elements	8064
LABs / CLBs	896
Total RAM Bits	294912
Number of I/O	97
Number of Gates	400000
Supply Voltage	1.14V ~ 1.26V

RFQQuick Inquiry Guide

To request a quotation for XC3S400-4TQ144C, simply provide:

Required quantity (any amount accepted)
Target delivery schedule (flexible timelines welcome)

We will provide availability, pricing, CoC, and authenticity documentation.

Compliance & Quality

Basic DocumentationCertificate of Conformance and traceability records provided.

Anti-CounterfeitSAE AS6081 testing protocols applied. Visual and X-ray inspection available.

EnvironmentalRoHS/REACH compliance information available upon request.

Additional NeedsSpecial testing or documentation discussed during inquiry.

Supply Chain Risk Assessment

Category	Level	Risk Factor	Mitigation
Supply Continuity	To be assessed	Lifecycle status requires verification	LTB assessment if applicable

Procurement FAQs

How can we verify the current stock availability for the XC3S400-4TQ144C given its mature lifecycle status?

Due to the 'Mature/Legacy' status of the XC3S400-4TQ144C, real-time stock levels are subject to verification. Procurement requires confirmation of date codes and remaining factory lead times through an authorized representative to ensure the 144-LQFP package is still accessible for new orders.

What is the process for identifying drop-in alternatives or cross-references for this specific FPGA?

Identifying a plain-text alternative for the XC3S400-4TQ144C requires confirmation of pin-compatibility and voltage requirements. Any proposed cross-reference is subject to verification against your specific board layout and timing constraints to ensure seamless integration with the existing 144-LQFP footprint.

Can a Certificate of Conformance (CoC) be provided for legacy XC3S400-4TQ144C units?

The availability of a formal Certificate of Conformance (CoC) for this legacy component requires confirmation at the time of inquiry. Traceability documentation is subject to verification based on the specific lot number and the sourcing channel used to acquire the 144-LQFP inventory.

Same Architecture Variants

Identical logic resources with differences in speed grade, packaging, or I/O count:

XC3S400-4FG320C | XC3S400-4FG320I

Pin-to-pin compatibility must be verified per datasheet.

Design Scaling Consideration

For projects requiring additional logic resources within the same Spartan-3 family:

XC3S200-5VQG100C

Resource headroom evaluation recommended before architectural migration.