DS80C320-ENG Equivalent & Substitute Parts

Part Overview

The DS80C320-ENG is an 8051-based 8-bit microcontroller IC manufactured by Analog Devices Inc./Maxim Integrated. This ROMless device operates at 25MHz with external oscillator support and is housed in a 44-TQFP surface mount package. The part is classified as obsolete, making identification of suitable alternatives essential for ongoing system support and new design implementations. Substitute parts must maintain functional equivalence across core processor architecture, memory configuration, I/O count, and electrical specifications.

Substiute Parts

DS80C320-ENG

Analog Devices Inc./Maxim IntegratedIn Stock: 20461DS80C320-ENG Datasheet

Current PartRFQ

DS80C320-ENG+

Analog Devices Inc./Maxim IntegratedIn Stock: 1500DS80C320-ENG+ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DS80C320-ENG is determined by strict equivalence across the following parameters:

Core processor architecture (8051), core size (8-bit), operating frequency (25MHz), program memory configuration (ROMless), RAM capacity (256 x 8), I/O pin count (32), supply voltage range (4.5V ~ 5.5V), operating temperature range (-40°C ~ 85°C), package type (44-TQFP), and connectivity interfaces (EBI/EMI, SIO, UART/USART).

The DS80C320-ENG+ qualifies as a direct substitute based on identical electrical and mechanical specifications. The primary distinction is product status and packaging format, with the ENG+ variant in active production status and supplied in tray packaging, compared to the obsolete ENG variant.

Parameter Comparison

Engineering Selection Recommendations

The DS80C320-ENG+ is the direct functional equivalent for applications currently using the DS80C320-ENG. Selection of the ENG+ variant is supported by its active product status, ensuring continued availability and supply chain stability. The DS80C320-ENG+ achieves ROHS3 compliance, meeting modern environmental and regulatory requirements, whereas the original ENG variant does not. Both parts maintain identical electrical performance and pinout compatibility within the 44-TQFP package. For new designs or system refreshes, the DS80C320-ENG+ is the appropriate selection. For legacy system maintenance requiring exact original specifications, the DS80C320-ENG remains functionally equivalent where RoHS non-compliance is acceptable.

Frequently Asked Questions (FAQ)

Q: Can DS80C320-ENG+ replace DS80C320-ENG in existing designs?

A: Yes. The DS80C320-ENG+ is electrically and mechanically identical to the DS80C320-ENG. Pin configuration, voltage requirements, operating frequency, memory configuration, and I/O count are equivalent. Direct substitution is supported without circuit modification.

Q: What is the primary difference between DS80C320-ENG and DS80C320-ENG+?

A: The DS80C320-ENG+ is in active production status with ROHS3 compliance and tray packaging. The DS80C320-ENG is obsolete, RoHS non-compliant, and supplied in bulk packaging. Functional performance is identical.

Q: Are there pin-to-pin compatibility concerns?

A: No. Both variants use the 44-TQFP (10x10) package with identical pinout. PCB layout and footprint remain unchanged.

Q: Does the packaging format affect electrical performance?

A: No. Tray and bulk packaging formats do not affect device performance. Packaging selection is determined by supply chain and handling requirements.

Q: Is the DS80C320-ENG+ suitable for applications requiring RoHS compliance?

A: Yes. The DS80C320-ENG+ meets ROHS3 compliance requirements. The original DS80C320-ENG does not.