DS89C430-ENL Equivalent & Substitute Parts

Part Overview

The DS89C430-ENL is an 8051-based 8-bit microcontroller manufactured by Analog Devices Inc./Maxim Integrated. This device integrates 16KB of FLASH program memory, 1KB of RAM, and 32 I/O pins in a 44-TQFP surface mount package. The part operates at 33MHz with a supply voltage range of 4.5V to 5.5V and supports external oscillator configuration. The DS89C430-ENL is classified as obsolete, making identification of active equivalent parts essential for ongoing production and maintenance applications.

Substiute Parts

DS89C430-ENL

Analog Devices Inc./Maxim IntegratedIn Stock: 1636DS89C430-ENL Datasheet

Current PartRFQ

DS89C430-ENL+

Analog Devices Inc./Maxim IntegratedIn Stock: 1438DS89C430-ENL+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DS89C430-ENL is determined by strict equivalence across the following electrical and mechanical parameters:

• Core Architecture: 8051 processor family
• Memory Configuration: 16KB FLASH program memory and 1KB RAM
• Clock Speed: 33MHz operation
• I/O Count: 32 I/O pins
• Supply Voltage: 4.5V to 5.5V range
• Package Format: 44-TQFP (10x10) surface mount
• Connectivity Interfaces: EBI/EMI, SIO, UART/USART
• Integrated Peripherals: Power-Fail Reset and Watchdog Timer

The DS89C430-ENL+ qualifies as a direct substitute based on identical electrical specifications and package configuration. The primary distinction is product status and compliance certification.

Parameter Comparison

Engineering Selection Recommendations

The DS89C430-ENL+ is the direct functional equivalent of the DS89C430-ENL. Both parts share identical electrical specifications, memory configuration, I/O architecture, and package format. Selection between these parts is determined by regulatory and supply chain requirements:

DS89C430-ENL+ is the preferred selection for new designs and ongoing production. This part carries Active product status and ROHS3 compliance certification, meeting current environmental and regulatory standards. The part is currently in stock with 1415 units available.

DS89C430-ENL remains available with 1527 units in stock but carries Obsolete product status and RoHS non-compliant certification. This part is suitable only for legacy system maintenance where regulatory compliance is not a requirement.

Both parts maintain identical Moisture Sensitivity Level (MSL 3, 168 Hours) and REACH Unaffected status.

Frequently Asked Questions (FAQ)

Q: Are DS89C430-ENL and DS89C430-ENL+ pin-for-pin compatible?

A: Yes. Both parts use the 44-TQFP (10x10) package with identical pin assignments, I/O configuration, and peripheral interfaces. Direct PCB substitution is possible without layout modification.

Q: What is the difference between DS89C430-ENL and DS89C430-ENL+?

A: The parts are electrically and functionally identical. The primary differences are product status (Obsolete vs. Active) and RoHS compliance (non-compliant vs. ROHS3 Compliant). The DS89C430-ENL+ is the current production equivalent.

Q: Can I use DS89C430-ENL+ in applications originally designed for DS89C430-ENL?

A: Yes. Identical electrical specifications, memory configuration, clock speed, supply voltage range, operating temperature range, and package format ensure full functional compatibility. No firmware or hardware modifications are required.

Q: What is the significance of the packaging designation difference (no packaging listed for DS89C430-ENL vs. Tray for DS89C430-ENL+)?

A: The DS89C430-ENL+ is supplied in Tray packaging, which is standard for active production parts. The packaging difference does not affect electrical or mechanical compatibility; it reflects current manufacturing and distribution practices.

Q: Are there any compliance considerations when switching from DS89C430-ENL to DS89C430-ENL+?

A: The DS89C430-ENL+ carries ROHS3 compliance certification, making it suitable for applications subject to RoHS regulations. The DS89C430-ENL is RoHS non-compliant. If your application or market requires RoHS compliance, DS89C430-ENL+ is the required selection.

Q: What is the Moisture Sensitivity Level (MSL) for these parts?

A: Both parts carry MSL 3 (168 Hours) rating. This indicates the maximum time the component can be exposed to moisture at specified temperature and humidity conditions before soldering. Standard moisture control procedures during storage and assembly are required.