ISD2560SY Equivalent & Substitute Parts

Part Overview

The ISD2560SY is a voice record/playback IC from Nuvoton Technology Corporation's ChipCorder® series, designed for single-message voice recording and playback applications with a 1-minute duration capacity. The device features pushbutton interface control, analog microphone input, and PWM speaker output, operating at 8kHz sampling frequency with automatic gain control.

The ISD2560SY is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure component availability, and support ongoing production or maintenance requirements for systems utilizing this interface IC.

Substiute Parts

ISD2560SY

Nuvoton Technology CorporationIn Stock: 1057ISD2560SY Datasheet

Current PartRFQ

ISD1760SY

Nuvoton Technology CorporationIn Stock: 3592ISD1760SY Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The ISD1760SY qualifies as a substitute for the ISD2560SY based on the following alignment of critical parameters:

Mechanical Compatibility: Both devices utilize the 28-SOIC package with identical 0.295" (7.50mm) width, enabling direct PCB footprint compatibility without layout modifications.

Functional Interface: Both parts support pushbutton control interface and multiple-message architecture, maintaining system-level control methodology.

Signal Processing: Both devices accept analog single-ended microphone input and provide PWM speaker output, preserving the analog signal chain without requiring interface conversion circuitry.

Manufacturing Continuity: Both parts are manufactured by Nuvoton Technology Corporation within the ChipCorder® series, ensuring design philosophy and feature set alignment.

Supply Voltage Overlap: The ISD1760SY supply range (2.4 V ~ 5.5 V) encompasses the ISD2560SY requirement (4.5 V ~ 5.5 V), allowing operation within the original design voltage specification.

Operating Temperature: Both devices operate across the 0°C ~ 70°C range, matching thermal requirements.

Parameter Comparison

Engineering Selection Recommendations

The ISD1760SY is the direct substitute for the obsolete ISD2560SY. Selection is based on the following engineering criteria:

Component Availability: The ISD2560SY is obsolete with no ongoing manufacturing. The ISD1760SY is actively produced by the same manufacturer, ensuring long-term supply chain continuity.

Regulatory Compliance: The ISD1760SY carries ROHS3 compliance certification, meeting current environmental and material restriction standards. This addresses regulatory requirements that may apply to new production or system updates.

Mechanical Interchangeability: Identical 28-SOIC package dimensions enable direct PCB substitution without layout redesign or board-level modifications.

Functional Compatibility: Both devices operate within the same signal processing architecture (analog microphone input, PWM speaker output, pushbutton control), preserving system-level functionality.

Electrical Compatibility: The ISD1760SY supply voltage range encompasses the original design specification, allowing operation at the same power supply voltage without circuit modification.

Frequently Asked Questions (FAQ)

Q: Can the ISD1760SY be used as a direct replacement for the ISD2560SY on existing PCBs?

A: Yes. Both devices use the 28-SOIC package with identical physical dimensions (0.295" × 7.50mm width). The pin configuration and signal interface are compatible, enabling direct component substitution without PCB layout changes.

Q: What are the key differences between the ISD2560SY and ISD1760SY?

A: The ISD1760SY offers extended recording duration (40–120 seconds versus 1 minute fixed), adjustable sampling frequency (4–12kHz versus fixed 8kHz), SPI interface capability in addition to pushbutton control, volume control feature, lower minimum supply voltage (2.4V versus 4.5V), and ROHS3 compliance. The ISD2560SY is obsolete; the ISD1760SY is actively manufactured.

Q: Does the ISD1760SY require firmware or software changes to replace the ISD2560SY?

A: The ISD1760SY maintains the same pushbutton interface and signal processing architecture as the ISD2560SY. Existing pushbutton-based control logic remains functional. The additional SPI interface and volume control features are optional and do not require implementation for basic operation.

Q: Is the ISD1760SY compatible with the same power supply voltage as the ISD2560SY?

A: Yes. The ISD2560SY operates at 4.5–5.5V. The ISD1760SY operates at 2.4–5.5V, which encompasses the original specification. Designs using 4.5–5.5V power supplies require no modification.

Q: What is the sampling frequency compatibility between the two devices?

A: The ISD2560SY operates at a fixed 8kHz sampling frequency. The ISD1760SY supports 4–12kHz sampling frequency, which includes 8kHz operation. Existing designs can maintain 8kHz sampling without modification.

Q: Are there any package or moisture sensitivity differences?

A: Both devices use the 28-SOIC package. The ISD2560SY has MSL 1 (unlimited moisture exposure); the ISD1760SY has MSL 3 (168-hour limit). Standard surface-mount handling procedures for MSL 3 components apply to the ISD1760SY.