AT24C164-10PI-2.5 Equivalent & Substitute Parts

Part Overview

The AT24C164-10PI-2.5 is a 16Kbit EEPROM memory IC with I2C interface operating at 400 kHz, manufactured by Microchip Technology. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The part is housed in an 8-DIP package suitable for through-hole mounting applications. Substitute parts must maintain functional equivalence across memory capacity, interface protocol, and electrical specifications while meeting current product availability and compliance requirements.

Substiute Parts

AT24C164-10PI-2.5

Microchip TechnologyIn Stock: 887AT24C164-10PI-2.5 Datasheet

Current PartRFQ

24AA16H-I/P

Microchip TechnologyIn Stock: 93124AA16H-I/P Datasheet

DirectRFQ

24LC16B-I/P

Microchip TechnologyIn Stock: 1009824LC16B-I/P Datasheet

Parametric EquivalentRFQ

24LC16BH-I/P

Microchip TechnologyIn Stock: 277524LC16BH-I/P Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AT24C164-10PI-2.5 is determined by strict equivalence across the following critical parameters:

• Memory capacity: 16Kbit with 2K x 8 organization
• Interface protocol: I2C at 400 kHz clock frequency
• Access time: 900 ns
• Package format: 8-DIP through-hole mounting
• Operating temperature range: -40°C to 85°C
• Voltage supply compatibility: minimum 2.5V operation

All listed substitute parts maintain these core specifications. Variations in write cycle time (5ms versus 10ms) and voltage supply floor (1.7V versus 2.5V) represent performance improvements or expanded operating ranges and do not prevent functional substitution. Product status transitions from obsolete to active indicate improved availability and manufacturing support.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts (24AA16H-I/P, 24LC16B-I/P, 24LC16BH-I/P) provide functional equivalence to the AT24C164-10PI-2.5 with active product status and ROHS3 compliance. The 24LC16B-I/P offers the highest inventory availability (10,000 units) with verified programmability certification. The 24AA16H-I/P provides the widest voltage supply range (1.7V ~ 5.5V) and improved write cycle time (5ms), supporting low-power applications. The 24LC16BH-I/P maintains identical electrical specifications to the main part while offering active status and improved compliance posture. Selection should prioritize active product status and RoHS compliance for new designs, with inventory availability as a secondary consideration for production continuity.

Frequently Asked Questions (FAQ)

Q: Can 24AA16H-I/P replace AT24C164-10PI-2.5 in existing designs? A: Yes. The 24AA16H-I/P maintains identical memory capacity, I2C interface, clock frequency, access time, and package format. The expanded voltage supply range (1.7V ~ 5.5V) and reduced write cycle time (5ms) represent performance improvements with no functional incompatibility.

Q: What is the primary difference between 24LC16B-I/P and 24LC16BH-I/P? A: Both parts share identical electrical and memory specifications. The primary distinction is inventory availability (10,000 units for 24LC16B-I/P versus 2,699 units for 24LC16BH-I/P) and programmability verification status (verified for 24LC16B-I/P).

Q: Are all substitute parts RoHS compliant? A: Yes. All three substitute parts (24AA16H-I/P, 24LC16B-I/P, 24LC16BH-I/P) are ROHS3 compliant, whereas the original AT24C164-10PI-2.5 is RoHS non-compliant.

Q: Does the 8-DIP package remain unchanged across all parts? A: Yes. All parts use the 8-DIP (0.300", 7.62mm) through-hole package format with identical pinout and mounting requirements.

Q: Why is the AT24C164-10PI-2.5 classified as obsolete? A: Obsolete status indicates the part is no longer manufactured or supported by Microchip Technology. Active substitute parts with equivalent specifications are available for design continuity.

Q: What is the significance of the write cycle time difference (10ms versus 5ms)? A: The reduced write cycle time in substitute parts represents improved performance. Applications requiring sequential write operations will complete faster with 5ms cycle time. This does not affect functional compatibility.