ISD1730EY Equivalent & Substitute Parts

Part Overview

The ISD1730EY is a voice record/playback interface IC manufactured by Nuvoton Technology Corporation, part of the ChipCorder® series. This device supports multiple message recording and playback with durations of 20 to 60 seconds, featuring pushbutton and SPI interfaces for control. The ISD1730EY is classified as obsolete, making identification of active equivalent parts essential for new designs and production continuity.

Substiute Parts

ISD1730EY

Nuvoton Technology CorporationIn Stock: 793ISD1730EY Datasheet

Current PartRFQ

ISD1730SY

Nuvoton Technology CorporationIn Stock: 1829ISD1730SY Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ISD1730EY is determined by functional and electrical equivalence across the following critical parameters:

• Functional Compatibility: Identical voice record/playback capability with multiple message support and 20 to 60 second duration range
• Interface Compatibility: Matching pushbutton and SPI control interfaces
• Signal Specifications: Identical analog single-ended microphone input and PWM speaker output
• Sampling Frequency: Matching 4 to 12 kHz range
• Power Supply: Identical 2.4 V to 5.5 V supply voltage range
• Operating Temperature: Matching 0°C to 70°C operating range
• Oscillator Type: Internal oscillator requirement
• Features: Automatic Gain Control and Volume Control functionality

The ISD1730SY qualifies as a direct substitute based on these parameters. The primary difference is the package type: the ISD1730SY uses 28-SOIC packaging instead of the 28-TSSOP packaging of the ISD1730EY. Both packages are surface mount and accommodate the same pin count and electrical specifications.

Parameter Comparison

Engineering Selection Recommendations

The ISD1730SY is the recommended substitute for the obsolete ISD1730EY. Both parts share identical electrical specifications, functional capabilities, and compliance certifications. The ISD1730SY is currently in active production status, ensuring availability for new designs and production requirements.

The primary consideration for selection is PCB layout accommodation. The ISD1730SY uses 28-SOIC packaging with a 7.50mm width, compared to the 28-TSSOP packaging of the ISD1730EY with an 11.80mm width. The SOIC package is narrower and may require PCB footprint modification if the original design was laid out for TSSOP dimensions. Both packages maintain identical pin counts and electrical pin assignments, supporting direct functional substitution with appropriate PCB layout adjustments.

Both parts maintain REACH Unaffected status and EAR99 export classification, with matching moisture sensitivity levels and supply voltage ranges suitable for standard industrial and consumer applications.

Frequently Asked Questions (FAQ)

Q: Can the ISD1730SY directly replace the ISD1730EY without circuit modifications?

A: The ISD1730SY provides electrical and functional equivalence to the ISD1730EY. PCB layout modifications are required due to package differences: the ISD1730SY uses 28-SOIC packaging (7.50mm width) versus the 28-TSSOP packaging (11.80mm width) of the ISD1730EY. Pin assignments remain identical, so schematic connections do not require changes.

Q: What is the primary difference between these two parts?

A: The ISD1730EY and ISD1730SY are functionally identical voice record/playback ICs with matching electrical specifications. The difference is packaging: ISD1730EY uses 28-TSSOP, while ISD1730SY uses 28-SOIC. The ISD1730SY is currently in active production, whereas the ISD1730EY is obsolete.

Q: Are there any compliance or certification differences?

A: Both parts share identical compliance certifications: REACH Unaffected status, EAR99 export classification, and MSL 3 moisture sensitivity level. No compliance differences exist between the two parts.

Q: What are the key electrical parameters that must match for substitution?

A: Critical parameters for substitution include: 4 to 12 kHz sampling frequency, 20 to 60 second recording duration, 2.4 V to 5.5 V supply voltage, 0°C to 70°C operating temperature, pushbutton and SPI interfaces, analog microphone input, PWM speaker output, and internal oscillator configuration.

Q: Is the ISD1730SY suitable for new product designs?

A: Yes. The ISD1730SY is in active production status and is the recommended choice for new designs requiring voice record/playback functionality with the ChipCorder® feature set. Its active status ensures long-term availability and supply chain stability.