TDA7264 Equivalent & Substitute Parts

Part Overview

The TDA7264 is a Class AB stereo amplifier integrated circuit manufactured by STMicroelectronics, designed for 2-channel audio amplification applications. The device delivers 25W per channel at 4Ω load impedance and operates across a ±5V to ±22.5V supply voltage range. The TDA7264 is classified as Last Time Buy, indicating discontinued production status. Identification of functionally compatible substitute components is necessary to ensure continued design support and procurement availability for new production runs and legacy system maintenance.

Substiute Parts

TDA7264

STMicroelectronicsIn Stock: 2264TDA7264 Datasheet

Current PartRFQ

TDA7265

STMicroelectronicsIn Stock: 32849TDA7265 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TDA7264 is determined by the following critical parameters:

Functional Compatibility Criteria:

• Amplifier topology: Class AB configuration
• Channel configuration: 2-Channel (Stereo) output
• Output power rating: 25W per channel minimum
• Supply voltage compatibility: Overlapping operational voltage range
• Protection feature set: Depop, Mute, Short-Circuit and Thermal Protection, Standby functions
• Mounting technology: Through Hole construction
• Regulatory compliance: ROHS3 and REACH status alignment

The TDA7265 qualifies as a manufacturer-recommended substitute based on these parameters. Both devices share identical amplifier topology, stereo output configuration, equivalent power ratings, overlapping supply voltage ranges, and identical protection feature sets. Both components maintain ROHS3 compliance and REACH unaffected status.

Parameter Comparison

Engineering Selection Recommendations

TDA7265 as Primary Substitute:

The TDA7265 is the manufacturer-recommended substitute for the TDA7264. Selection of the TDA7265 is supported by the following factors:

1. Product Status Alignment: The TDA7265 maintains Active product status, ensuring continued availability and manufacturing support, whereas the TDA7264 is designated Last Time Buy.

2. Functional Equivalence: Both devices implement identical Class AB stereo amplifier architecture with equivalent 25W per channel output power ratings and identical protection feature sets (Depop, Mute, Short-Circuit and Thermal Protection, Standby).

3. Supply Voltage Compatibility: The TDA7265 supply voltage range (±5V ~ ±25V) encompasses the TDA7264 operational range (±5V ~ ±22.5V), providing extended headroom for power supply design flexibility.

4. Regulatory Compliance: Both components maintain ROHS3 compliance and REACH unaffected status, satisfying equivalent environmental and regulatory requirements.

5. Temperature Range Extension: The TDA7265 operating temperature range (-20°C ~ 85°C) exceeds the TDA7264 specification (0°C ~ 70°C), enabling deployment in broader thermal environments.

Package Footprint Consideration:

The TDA7265 utilizes Multiwatt-11 packaging with vertical, bent, and staggered leads, whereas the TDA7264 employs Multiwatt-8 packaging with straight leads. PCB layout modification is required for substitution. The increased pin count (11 versus 8) and different lead configuration necessitate circuit board redesign and verification of thermal management characteristics.

Frequently Asked Questions (FAQ)

Q: Can the TDA7265 directly replace the TDA7264 without PCB modification?

A: No. The TDA7265 uses Multiwatt-11 packaging with vertical, bent, and staggered leads, while the TDA7264 uses Multiwatt-8 packaging with straight leads. PCB layout redesign is required. Pin assignments and thermal pad configurations differ between the two packages.

Q: What is the primary reason for substituting the TDA7264?

A: The TDA7264 is designated Last Time Buy, indicating discontinued production. The TDA7265 is the manufacturer-recommended substitute and remains in active production status.

Q: Are the output power ratings equivalent between TDA7264 and TDA7265?

A: Both devices deliver 25W per channel. The TDA7264 specification is rated at 4Ω load impedance, while the TDA7265 is rated at 8Ω load impedance. Power delivery varies with load impedance; verification against your specific load conditions is necessary.

Q: Does the TDA7265 support the same supply voltage range as the TDA7264?

A: The TDA7265 supply voltage range (±5V ~ ±25V) fully encompasses the TDA7264 range (±5V ~ ±22.5V). The TDA7265 supports an extended upper voltage limit of ±25V.

Q: Are protection features identical between the two devices?

A: Yes. Both the TDA7264 and TDA7265 include identical protection features: Depop, Mute, Short-Circuit and Thermal Protection, and Standby functionality.

Q: What is the operating temperature difference between these devices?

A: The TDA7264 operates from 0°C to 70°C, while the TDA7265 operates from -20°C to 85°C. The TDA7265 supports a wider temperature range, enabling deployment in more extreme thermal environments.

Q: Do both devices maintain the same regulatory compliance status?

A: Yes. Both the TDA7264 and TDA7265 are ROHS3 compliant and REACH unaffected, satisfying identical environmental and regulatory requirements.

Q: What mounting technology do these devices use?

A: Both devices use Through Hole mounting technology. However, the different package types (Multiwatt-8 versus Multiwatt-11) result in different PCB footprints and lead configurations.