AT24C164-10PC Equivalent & Substitute Parts

Part Overview

The AT24C164-10PC is a 16Kbit EEPROM memory IC with I2C interface operating at 400 kHz, manufactured by Microchip Technology in an 8-DIP package. This part is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The part operates within a 4.5V to 5.5V supply voltage range with access time of 900 ns and a 10ms write cycle time.

Substiute Parts

AT24C164-10PC

Microchip TechnologyIn Stock: 4380AT24C164-10PC Datasheet

Current PartRFQ

24AA16/P

Microchip TechnologyIn Stock: 93624AA16/P Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the AT24C164-10PC is determined by the following critical parameters:

• Memory capacity (16Kbit) and organization (2K x 8)
• I2C interface protocol at 400 kHz operation
• Package compatibility (8-DIP through-hole)
• Access time specification (900 ns)
• Operating temperature range (0°C ~ 70°C)

The 24AA16/P qualifies as a direct substitute based on matching all core electrical and mechanical parameters. While the 24AA16/P offers an extended supply voltage range (1.7V ~ 5.5V) and improved write cycle time (5ms versus 10ms), these represent enhancements rather than deviations from the original specification.

Parameter Comparison

Engineering Selection Recommendations

The 24AA16/P is the primary substitute for the AT24C164-10PC. Key selection factors include:

• Product Status: The 24AA16/P maintains active product status, ensuring continued availability and manufacturing support, whereas the AT24C164-10PC is obsolete.
• RoHS Compliance: The 24AA16/P is ROHS3 compliant, meeting current environmental and regulatory requirements. The AT24C164-10PC is non-compliant.
• Electrical Compatibility: The 24AA16/P operates within the original supply voltage specification (4.5V ~ 5.5V) while offering extended low-voltage capability (1.7V minimum).
• Performance Enhancement: The 24AA16/P provides a 50% reduction in write cycle time (5ms versus 10ms), improving system throughput without compromising compatibility.
• Package Compatibility: Both parts use identical 8-DIP through-hole packaging, enabling direct PCB replacement without layout modifications.

Frequently Asked Questions (FAQ)

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

A: Yes. Both parts share identical package geometry (8-DIP, 0.300" pitch), pinout, I2C protocol, and operating temperature range. No PCB modifications are required for physical or electrical substitution.

Q: What are the key differences between these parts?

A: The 24AA16/P offers three advantages: active product status (versus obsolete), ROHS3 compliance (versus non-compliant), extended supply voltage range (1.7V minimum versus 4.5V minimum), and faster write cycle time (5ms versus 10ms). All core memory specifications remain identical.

Q: Does the extended voltage range of the 24AA16/P affect compatibility?

A: No. The 24AA16/P operates within the original 4.5V ~ 5.5V specification range. The extended lower limit (1.7V) provides additional design flexibility for low-power applications without impacting existing 5V systems.

Q: Are there any timing considerations when substituting these parts?

A: No timing conflicts exist. Both parts maintain 900 ns access time and 400 kHz I2C clock frequency. The improved write cycle time of the 24AA16/P (5ms) is a performance enhancement that does not affect system compatibility.

Q: What is the inventory status for these parts?

A: The AT24C164-10PC has 4,348 units in stock but is classified as obsolete. The 24AA16/P has 846 units available and maintains active product status, making it the recommended choice for new designs and long-term production planning.