ICL7129AC/D Equivalent & Substitute Parts

Part Overview

The ICL7129AC/D is a 4.5-digit display driver integrated circuit manufactured by Analog Devices Inc./Maxim Integrated, designed for data acquisition applications. This component is classified as obsolete, which necessitates identification of active equivalent parts for ongoing design requirements and production continuity. The die package format limits direct pin-compatible substitution to packaged alternatives that maintain electrical and functional equivalence.

Substiute Parts

ICL7129AC/D

Analog Devices Inc./Maxim IntegratedIn Stock: 806ICL7129AC/D Datasheet

Current PartRFQ

ICL7129ACPL+

Analog Devices Inc./Maxim IntegratedIn Stock: 2250ICL7129ACPL+ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ICL7129AC/D is determined by functional and electrical parameter equivalence within the ICL7129 product family. The primary substitute, ICL7129ACPL+, maintains identical electrical specifications including 4.5-digit resolution, single-supply operation across 6V to 14V, and 1-channel configuration. The key differentiator is packaging format: the ICL7129AC/D is supplied as a die, while ICL7129ACPL+ is packaged in 40-PDIP through-hole format. This substitution is valid when the application can accommodate the packaged form factor and through-hole mounting technology. Electrical performance, supply voltage range, temperature operating range, and display driver functionality remain constant across both variants.

Parameter Comparison

Engineering Selection Recommendations

The ICL7129ACPL+ is the primary active substitute for the obsolete ICL7129AC/D. Selection of this substitute is appropriate when the following conditions are met:

The application design can accommodate a 40-PDIP through-hole package format in place of the original die configuration. The circuit board layout supports through-hole mounting technology. The design does not impose space constraints that would prohibit the larger package footprint. Compliance requirements permit use of ROHS3-compliant components, which the ICL7129ACPL+ satisfies. The electrical specifications—4.5-digit resolution, 6V to 14V supply voltage, single-supply operation, and 0°C to 70°C operating temperature range—align with application requirements.

For applications where die-level integration is mandatory or where through-hole mounting is not feasible, alternative packaging options within the ICL7129 family should be evaluated based on specific form factor and mounting requirements.

Frequently Asked Questions (FAQ)

Q: Can ICL7129ACPL+ directly replace ICL7129AC/D in existing designs?

A: Electrical substitution is direct; the components are functionally equivalent. However, physical substitution requires design modification. The ICL7129AC/D is a die requiring hybrid integration or die-attach processes, while ICL7129ACPL+ is a packaged 40-PDIP component for through-hole mounting. Board layout and assembly process changes are necessary.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution is valid when 4.5-digit resolution, single-supply operation (6V–14V), 1-channel configuration, and 0°C to 70°C operating temperature are maintained. Package format and mounting technology differ but do not affect electrical performance.

Q: Is the ICL7129ACPL+ RoHS compliant?

A: Yes, ICL7129ACPL+ is ROHS3 compliant. The original ICL7129AC/D is RoHS non-compliant. This difference may be relevant for applications subject to RoHS regulatory requirements.

Q: Are there other substitutes within the ICL7129 family?

A: The substitute list identifies TC7129CPL as an additional option. Detailed parameter comparison with TC7129CPL should be performed to confirm compatibility with specific application requirements.

Q: What is the inventory status of the substitute part?

A: ICL7129ACPL+ is in active production with 2210 pieces available in new original stock, ensuring supply continuity for new designs and production requirements.