AT17N256-10PI Equivalent & Substitute Parts

Part Overview

The AT17N256-10PI is a 256Kb Serial EEPROM memory integrated circuit manufactured by Microchip Technology, housed in an 8-DIP through-hole package. This device is classified as obsolete, indicating it has been discontinued and is no longer in active production. Finding equivalent or substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support legacy system maintenance or redesign initiatives where component availability is constrained.

Substiute Parts

AT17N256-10PI

Microchip TechnologyIn Stock: 766AT17N256-10PI Datasheet

Current PartRFQ

AT17LV256-10PU

Microchip TechnologyIn Stock: 1607AT17LV256-10PU Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The AT17LV256-10PU qualifies as a direct substitute for the AT17N256-10PI based on the following alignment of critical electrical and mechanical parameters:

Matching Parameters:

• Memory capacity: 256Kb (identical)
• Programmable type: Serial EEPROM (identical)
• Operating temperature range: -40°C ~ 85°C (identical)
• Mounting type: Through Hole (identical)
• Package / Case: 8-DIP (0.300", 7.62mm) (identical)
• Supplier device package: 8-PDIP (identical)
• Manufacturer: Microchip Technology (identical)

Voltage Supply Compatibility: The AT17N256-10PI operates at 3V ~ 3.6V. The AT17LV256-10PU supports dual voltage operation: 3V ~ 3.6V and 4.5V ~ 5.5V. The substitute part maintains full compatibility with the original voltage specification while offering extended voltage range capability.

Parameter Comparison

Engineering Selection Recommendations

The AT17LV256-10PU is a qualified substitute for the AT17N256-10PI. Selection should be based on the following factors:

Product Status: The AT17N256-10PI is obsolete, while the AT17LV256-10PU is active. For new designs or ongoing production requiring component replenishment, the AT17LV256-10PU ensures continued supply availability and manufacturing support.

Compliance Posture: The AT17LV256-10PU is ROHS3 compliant, whereas the AT17N256-10PI is RoHS non-compliant. Organizations subject to RoHS regulations or customer requirements mandating RoHS compliance should transition to the AT17LV256-10PU.

Electrical Compatibility: Both devices operate within the 3V ~ 3.6V range specified for the original part. The AT17LV256-10PU's extended voltage capability (4.5V ~ 5.5V) provides design flexibility without compromising compatibility with existing 3V ~ 3.6V supply rails.

Physical Compatibility: Identical package geometry (8-DIP, 0.300" pitch) and through-hole mounting ensure direct PCB footprint compatibility without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can the AT17LV256-10PU be used as a direct replacement for the AT17N256-10PI without PCB modifications?

A: Yes. Both devices share identical package dimensions (8-DIP, 0.300" pitch), pin count, and through-hole mounting specifications. No PCB layout changes are required for physical substitution.

Q: Are the memory capacities identical between these parts?

A: Yes. Both the AT17N256-10PI and AT17LV256-10PU provide 256Kb of Serial EEPROM memory capacity.

Q: What is the voltage compatibility between these devices?

A: The AT17N256-10PI operates at 3V ~ 3.6V. The AT17LV256-10PU supports both 3V ~ 3.6V and 4.5V ~ 5.5V operation. When used in a 3V ~ 3.6V supply environment, the substitute part maintains full electrical compatibility with the original specification.

Q: Why is the AT17N256-10PI listed as obsolete?

A: Obsolete status indicates the part has been discontinued by the manufacturer and is no longer in active production. The AT17LV256-10PU represents the active equivalent in Microchip Technology's current product portfolio.

Q: Does the AT17LV256-10PU meet RoHS compliance requirements?

A: Yes. The AT17LV256-10PU is ROHS3 compliant. The original AT17N256-10PI is RoHS non-compliant. Organizations requiring RoHS-compliant components should use the AT17LV256-10PU.

Q: Are the operating temperature ranges the same?

A: Yes. Both devices operate across the -40°C ~ 85°C temperature range.