AT24C04A-10PI Equivalent & Substitute Parts

Part Overview

The AT24C04A-10PI is a 4Kbit EEPROM memory IC utilizing I2C interface protocol with 400 kHz clock frequency. This component is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing design requirements and production continuity. The part operates across a supply voltage range of 4.5V to 5.5V and is housed in an 8-DIP through-hole package.

Substiute Parts

AT24C04A-10PI

Microchip TechnologyIn Stock: 990AT24C04A-10PI Datasheet

Current PartRFQ

24AA04-I/P

Microchip TechnologyIn Stock: 121324AA04-I/P Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AT24C04A-10PI is determined by the following critical parameters: memory capacity (4Kbit), memory interface protocol (I2C), clock frequency (400 kHz), package configuration (8-DIP through-hole), and operating temperature range (-40°C ~ 85°C). The 24AA04-I/P qualifies as a direct substitute based on matching these core electrical and mechanical specifications. The substitute part maintains identical memory size, interface type, clock frequency, access time, write cycle time, and package form factor. The 24AA04-I/P extends the supply voltage range to 1.7V ~ 5.5V, providing broader operational flexibility while remaining compatible with the original 4.5V ~ 5.5V requirement.

Parameter Comparison

Engineering Selection Recommendations

The 24AA04-I/P is the designated manufacturer-recommended substitute for the obsolete AT24C04A-10PI. Selection of the 24AA04-I/P provides the following advantages: active product status ensures ongoing availability and manufacturing support, ROHS3 compliance satisfies current regulatory requirements, and extended supply voltage range (1.7V ~ 5.5V) accommodates broader system designs while maintaining full backward compatibility with the original 4.5V ~ 5.5V specification. All critical electrical parameters—memory capacity, interface protocol, timing characteristics, and temperature range—remain unchanged, enabling direct functional replacement without circuit redesign.

Frequently Asked Questions (FAQ)

Q: Can the 24AA04-I/P directly replace the AT24C04A-10PI in existing designs?

A: Yes. The 24AA04-I/P maintains identical memory capacity (4Kbit), I2C interface, clock frequency (400 kHz), access time (900 ns), write cycle time (5ms), operating temperature range (-40°C ~ 85°C), and 8-DIP package configuration. Pin-for-pin compatibility is maintained.

Q: What is the significance of the different memory organization specifications?

A: The AT24C04A-10PI specifies 512 x 8 organization while the 24AA04-I/P specifies 256 x 8 x 2. Both configurations deliver 4Kbit total capacity and are functionally equivalent for I2C interface operation. The organizational difference does not affect system-level compatibility.

Q: Does the extended voltage range of the 24AA04-I/P affect compatibility?

A: No. The 24AA04-I/P operates across 1.7V ~ 5.5V, which encompasses the original part's 4.5V ~ 5.5V range. Systems designed for the AT24C04A-10PI operate within the substitute's specification window without modification.

Q: What is the impact of RoHS compliance differences?

A: The AT24C04A-10PI is RoHS non-compliant while the 24AA04-I/P is ROHS3 compliant. For new designs and production environments subject to RoHS regulations, the 24AA04-I/P satisfies compliance requirements. Existing systems using the obsolete part may continue operation without regulatory impact.

Q: Are there any package or mounting considerations for substitution?

A: Both parts utilize identical 8-DIP (0.300", 7.62mm) through-hole packages. PCB layouts, socket configurations, and mounting procedures require no modification for the substitution.