AT24C164-10PC-1.8 Equivalent & Substitute Parts

Part Overview

The AT24C164-10PC-1.8 is a 16Kbit EEPROM memory IC with I2C interface operating at 400 kHz, manufactured by Microchip Technology. This component is classified as obsolete, which necessitates identification of equivalent substitute parts for ongoing design requirements and production continuity. The part is designed for applications requiring non-volatile serial memory with low-voltage operation (1.8V to 5.5V) in 8-DIP through-hole packaging.

Substiute Parts

AT24C164-10PC-1.8

Microchip TechnologyIn Stock: 979AT24C164-10PC-1.8 Datasheet

Current PartRFQ

24AA16/P

Microchip TechnologyIn Stock: 93624AA16/P Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AT24C164-10PC-1.8 is determined by strict equivalence across the following critical parameters:

• Memory capacity: 16Kbit (2K x 8 organization)
• Interface protocol: I2C serial communication
• Clock frequency: 400 kHz operation
• Package type: 8-DIP through-hole form factor
• Voltage supply range: Minimum 1.8V operation capability
• Access time: 900 ns specification
• Mounting compatibility: Through-hole DIP configuration

The substitute part 24AA16/P meets all functional and physical requirements for direct replacement. Both parts are manufactured by Microchip Technology and share identical memory architecture, interface specifications, and package dimensions. The primary distinction is product status and compliance certification.

Parameter Comparison

Engineering Selection Recommendations

The 24AA16/P is the direct functional equivalent for AT24C164-10PC-1.8 replacement. Selection of 24AA16/P is supported by the following engineering factors:

• Active product status ensures ongoing availability and manufacturer support
• ROHS3 compliance satisfies current regulatory requirements for new designs and production
• Identical memory specifications and I2C interface ensure pin-for-pin compatibility
• Improved write cycle time (5 ms versus 10 ms) provides performance enhancement
• Voltage supply range compatibility (1.7V minimum versus 1.8V) maintains operational margin
• Through-hole 8-DIP package enables direct PCB substitution without layout modification

For applications where RoHS non-compliance is acceptable and obsolete component sourcing is feasible, AT24C164-10PC-1.8 may remain in use. However, 24AA16/P is the recommended selection for new designs and production continuity.

Frequently Asked Questions (FAQ)

Q: Can 24AA16/P directly replace AT24C164-10PC-1.8 on existing PCBs?

A: Yes. Both parts use identical 8-DIP through-hole packaging with matching pin assignments. No PCB modification is required for physical substitution.

Q: Are there differences in I2C protocol implementation between these parts?

A: No. Both parts implement standard I2C serial communication at 400 kHz clock frequency with identical memory organization (2K x 8). Software and firmware compatibility is maintained.

Q: What is the significance of the write cycle time difference?

A: The 24AA16/P write cycle time is 5 ms compared to 10 ms for AT24C164-10PC-1.8. This represents improved performance with no impact on compatibility. Applications requiring faster write operations benefit from this specification.

Q: Does the voltage supply range difference affect circuit design?

A: The 24AA16/P minimum supply voltage is 1.7V versus 1.8V for AT24C164-10PC-1.8. This provides additional operational margin in low-voltage applications. Existing designs operating at 1.8V or higher are unaffected.

Q: Why is product status relevant for component selection?

A: AT24C164-10PC-1.8 is obsolete, indicating discontinued manufacturing and limited future availability. The 24AA16/P active status ensures reliable sourcing for current and future production requirements.

Q: What compliance advantage does 24AA16/P provide?

A: The 24AA16/P is ROHS3 compliant, meeting current environmental and regulatory standards. AT24C164-10PC-1.8 is RoHS non-compliant, which may restrict use in regulated markets and new product certifications.