ISD1110S Equivalent & Substitute Parts

Part Overview

The ISD1110S is a ChipCorder® voice record/playback IC manufactured by Nuvoton Technology Corporation, designed for applications requiring analog single-ended microphone input and PWM speaker output with 10-second recording duration. The device operates as a pushbutton-controlled interface with multiple messaging capability and automatic gain control.

The ISD1110S is classified as obsolete. Identifying equivalent and substitute parts is necessary to support legacy system maintenance, design updates, and procurement continuity where original inventory becomes unavailable.

Substiute Parts

ISD1110S

Nuvoton Technology CorporationIn Stock: 818ISD1110S Datasheet

Current PartRFQ

ISD1610BSY

Nuvoton Technology CorporationIn Stock: 1615ISD1610BSY Datasheet

MFR RecommendedRFQ

ISD4002-120SY

Nuvoton Technology CorporationIn Stock: 3862ISD4002-120SY Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ISD1110S is determined by compatibility across the following critical parameters:

Primary Compatibility Criteria:

• Manufacturer: Nuvoton Technology Corporation (ChipCorder® series)
• Functional Category: Voice record/playback interface IC
• Messaging Capability: Multiple message support
• Mounting Type: Surface Mount
• Package Compatibility: 28-SOIC form factor preferred

Secondary Compatibility Criteria:

• Input/Output Signal Types: Microphone input and speaker output capability
• Supply Voltage Range: Overlap with 4.5 V ~ 5.5 V requirement
• Operating Temperature Range: 0°C ~ 70°C compatibility
• Sampling Frequency: Support for voice-grade audio processing

The substitute parts listed maintain core ChipCorder® functionality while offering variations in recording duration, interface protocol, and electrical specifications to accommodate different application requirements.

Parameter Comparison

Engineering Selection Recommendations

ISD1610BSY Substitution: The ISD1610BSY is an active product with ROHS3 compliance and extended supply voltage range (2.4 V ~ 5.5 V), providing improved regulatory status over the obsolete ISD1110S. However, this substitute operates as a single-message device compared to the multiple-message capability of the ISD1110S. The 16-SOIC package requires PCB layout modification. Recording duration range of 6.6 ~ 20 seconds encompasses the 10-second requirement of the original part. Selection is appropriate for applications where single-message operation is acceptable and regulatory compliance is required.

ISD4002-120SY Substitution: The ISD4002-120SY maintains the 28-SOIC package form factor and multiple-message capability of the ISD1110S, with ROHS3 compliance. This substitute operates via SPI interface rather than pushbutton control, requiring firmware or control circuit modification. Supply voltage range (2.7 V ~ 3.3 V) does not overlap with the original 4.5 V ~ 5.5 V specification, necessitating power supply redesign. Extended recording duration (2 minutes) and differential input signal represent functional enhancements. Selection is appropriate for applications requiring extended recording capability and where SPI protocol integration is feasible.

Frequently Asked Questions (FAQ)

Q: Can the ISD1610BSY directly replace the ISD1110S without PCB modification?

A: No. The ISD1610BSY uses a 16-SOIC package (0.154" width) compared to the 28-SOIC package (0.295" width) of the ISD1110S. PCB layout and footprint changes are required. Additionally, the single-message limitation of the ISD1610BSY differs from the multiple-message operation of the original part.

Q: What are the key differences in control interface between these parts?

A: The ISD1110S and ISD1610BSY both use pushbutton interface control. The ISD4002-120SY uses SPI serial protocol, requiring microcontroller integration and firmware development for equivalent functionality.

Q: Is the ISD4002-120SY suitable for 5V supply applications?

A: No. The ISD4002-120SY operates at 2.7 V ~ 3.3 V supply voltage, which does not accommodate the 4.5 V ~ 5.5 V range of the ISD1110S. Power supply redesign and voltage regulation are necessary.

Q: How do the recording durations compare across these parts?

A: The ISD1110S provides 10 seconds fixed duration. The ISD1610BSY offers variable duration from 6.6 to 20 seconds. The ISD4002-120SY provides 2 minutes (120 seconds) of recording capacity. Selection depends on application duration requirements.

Q: What is the impact of RoHS compliance status on part selection?

A: The ISD1110S is RoHS non-compliant. Both substitute parts (ISD1610BSY and ISD4002-120SY) are ROHS3 compliant. For applications subject to RoHS regulations or customer requirements, the substitute parts provide regulatory alignment. Existing designs using the ISD1110S may continue operation without regulatory impact unless new procurement or redesign triggers compliance requirements.

Q: Are there differences in input signal conditioning between these parts?

A: The ISD1110S accepts analog single-ended microphone input. The ISD1610BSY also accepts microphone input with single-ended characteristics. The ISD4002-120SY requires analog differential input, necessitating input signal conditioning circuit modification if transitioning from the ISD1110S.