XC17V04PC44C Equivalent & Substitute Parts

Part Overview

The XC17V04PC44C is a 4Mb One-Time Programmable (OTP) memory integrated circuit manufactured by AMD, designed for applications requiring serial programmable read-only memory with 3.3V supply operation. This device is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system support, design updates, and procurement continuity.

The XC17V04PC44C operates within a supply voltage range of 3V to 3.6V and is housed in a 44-pin LCC (J-Lead) surface mount package. Due to its obsolete status, sourcing direct replacements from original inventory becomes increasingly difficult, necessitating evaluation of substitute components that maintain electrical and mechanical compatibility.

Substiute Parts

XC17V04PC44C

AMDIn Stock: 1303XC17V04PC44C Datasheet

Current PartRFQ

AT17LV040-10TQU

Microchip TechnologyIn Stock: 3162AT17LV040-10TQU Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the XC17V04PC44C is evaluated based on the following critical parameters:

Memory Capacity: The substitute must provide 4Mb storage capacity to maintain data handling equivalence.

Supply Voltage Compatibility: The substitute must operate within the 3V to 3.6V range specified for the original device. Extended voltage ranges (such as 4.5V to 5.5V) are acceptable provided the lower voltage threshold remains compatible.

Programmable Type: While the original device is OTP (One-Time Programmable), substitutes with enhanced programmability (such as Serial EEPROM) are functionally compatible for applications where reprogrammability is beneficial or required.

Operating Temperature Range: The substitute must support the 0°C to 70°C operating window. Substitutes with extended temperature ranges (such as -40°C to 85°C) provide enhanced operational flexibility.

Package Configuration: The 44-pin surface mount package is a primary mechanical constraint. Substitutes must maintain pin count and surface mount compatibility, though specific package designations (LCC versus TQFP) may differ if pinout and electrical characteristics remain equivalent.

Regulatory Compliance: RoHS compliance status and REACH classification are secondary considerations for new designs but do not preclude substitution in existing systems.

Parameter Comparison

Engineering Selection Recommendations

Electrical Compatibility: The AT17LV040-10TQU substitute meets all critical electrical parameters of the XC17V04PC44C. Both devices operate at 4Mb memory capacity and support the 3V to 3.6V supply voltage range. The substitute's extended voltage range (4.5V to 5.5V) and extended operating temperature range (-40°C to 85°C) provide additional operational margin without compromising compatibility.

Programmability Enhancement: The AT17LV040-10TQU is classified as Serial EEPROM rather than OTP. This represents a functional enhancement, as Serial EEPROM devices retain the write-once capability of OTP devices while adding reprogrammability. Applications designed for OTP operation remain fully compatible with Serial EEPROM substitutes.

Package Consideration: The original XC17V04PC44C uses a 44-LCC (J-Lead) package, while the AT17LV040-10TQU uses a 44-TQFP package. Both are 44-pin surface mount configurations. PCB layout modifications are required to accommodate the different package footprints. Pin-to-pin electrical equivalence must be verified against detailed datasheets before PCB redesign.

Product Status and Availability: The XC17V04PC44C is obsolete with limited remaining inventory. The AT17LV040-10TQU is actively manufactured by Microchip Technology with substantial inventory availability (3100 units), ensuring long-term procurement reliability.

Regulatory Compliance: The AT17LV040-10TQU is ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for new designs and manufacturing environments. The original XC17V04PC44C is RoHS non-compliant, a consideration for systems subject to modern environmental regulations.

Frequently Asked Questions (FAQ)

Q: Can the AT17LV040-10TQU directly replace the XC17V04PC44C without PCB modifications?

A: No. While both devices are 44-pin surface mount memory components with equivalent electrical specifications, the package types differ (44-LCC versus 44-TQFP). PCB footprint redesign is required. Pin-to-pin electrical compatibility must be verified against manufacturer datasheets before implementation.

Q: What is the primary advantage of the AT17LV040-10TQU over the XC17V04PC44C?

A: The AT17LV040-10TQU is actively manufactured and widely available, whereas the XC17V04PC44C is obsolete. Additionally, the AT17LV040-10TQU offers Serial EEPROM functionality (reprogrammable) compared to OTP (one-time programmable), and supports extended operating temperature and voltage ranges.

Q: Are there voltage compatibility concerns when substituting the AT17LV040-10TQU?

A: No. The AT17LV040-10TQU supports the 3V to 3.6V range required by the original XC17V04PC44C. The substitute's additional support for 4.5V to 5.5V operation provides design flexibility without creating incompatibility.

Q: Does the Serial EEPROM functionality of the AT17LV040-10TQU affect compatibility with systems designed for OTP operation?

A: No. Serial EEPROM devices are functionally compatible with OTP applications. The reprogrammability feature is an enhancement that does not interfere with write-once operation if the application requires it.

Q: What is the significance of the different package designations (44-LCC versus 44-TQFP)?

A: Package designation indicates physical form factor and pin layout. Both are 44-pin surface mount packages, but the footprints differ. The 44-LCC uses J-lead configuration while the 44-TQFP uses gull-wing leads. PCB layout and assembly processes must accommodate the specific package type selected.

Q: Is the extended operating temperature range of the AT17LV040-10TQU (-40°C to 85°C) a concern for systems designed for 0°C to 70°C operation?

A: No. Extended operating ranges are backward compatible. Systems designed for 0°C to 70°C operation function correctly with components rated for -40°C to 85°C.

Q: What regulatory compliance differences exist between these devices?

A: The XC17V04PC44C is RoHS non-compliant. The AT17LV040-10TQU is ROHS3 compliant. For new designs or systems subject to environmental regulations, the AT17LV040-10TQU is the appropriate selection.

Q: Is inventory availability a factor in selecting the AT17LV040-10TQU?

A: Yes. The XC17V04PC44C is obsolete with limited remaining stock. The AT17LV040-10TQU is actively manufactured with substantial inventory (3100 units), ensuring reliable long-term procurement.