AT93C86A-10PI-2.7 Equivalent & Substitute Parts

Part Overview

The AT93C86A-10PI-2.7 is a 16Kbit EEPROM memory IC manufactured by Microchip Technology, featuring 3-Wire Serial interface with 2 MHz clock frequency and 2.7V to 5.5V supply voltage range. This component is classified as obsolete, necessitating identification of active equivalent parts for new designs and ongoing production requirements. The through-hole 8-DIP packaging and specific electrical characteristics define the substitution criteria for this memory device.

Key Parameters

Parameter	Value
Memory Size	16Kbit
Memory Organization	2K x 8, 1K x 16
Memory Interface	3-Wire Serial
Clock Frequency	2 MHz
Write Cycle Time	10ms
Voltage Supply Range	2.7V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Package Type	8-DIP (0.300", 7.62mm)
Mounting Type	Through Hole

Substitute Part Grouping Explanation

Substitution for the AT93C86A-10PI-2.7 is determined by the following critical parameters: memory capacity (16Kbit), memory organization (2K x 8 or 1K x 16), package type (8-DIP through-hole), and operating temperature range (-40°C to 85°C). The memory interface type (3-Wire Serial vs. Microwire) represents a functional distinction that affects circuit compatibility. Supply voltage range compatibility and write cycle time specifications must be evaluated for each substitute candidate.

Two substitute parts are identified based on these criteria:

AT93C86A-10PU-2.7: Identical memory specifications and 3-Wire Serial interface with matching voltage and temperature ranges. Differs only in packaging format (tube vs. DIP).
93AA86C-I/P: Equivalent memory capacity and organization with Microwire interface (functionally compatible with 3-Wire Serial in many applications). Offers improved write cycle time (5ms vs. 10ms) and extended voltage range (1.8V ~ 5.5V).

Parameter Comparison

Parameter	AT93C86A-10PI-2.7 (Main)	AT93C86A-10PU-2.7	93AA86C-I/P
Manufacturer	Microchip Technology	Microchip Technology	Microchip Technology
Memory Size	16Kbit	16Kbit	16Kbit
Memory Organization	2K x 8, 1K x 16	2K x 8, 1K x 16	2K x 8, 1K x 16
Memory Interface	3-Wire Serial	3-Wire Serial	Microwire
Clock Frequency	2 MHz	2 MHz	3 MHz
Write Cycle Time	10ms	10ms	5ms
Voltage Supply Range	2.7V ~ 5.5V	2.7V ~ 5.5V	1.8V ~ 5.5V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package Type	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)
Mounting Type	Through Hole	Through Hole	Through Hole
Product Status	Obsolete	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

AT93C86A-10PU-2.7 is the primary substitute for direct replacement. This part maintains identical electrical specifications, memory interface type (3-Wire Serial), and voltage/temperature operating ranges. The only distinction is packaging format (tube vs. DIP), which does not affect functional compatibility. This part is currently in active production status with ROHS3 compliance, addressing the obsolescence of the original component.

93AA86C-I/P serves as a functional alternative where circuit design permits Microwire interface implementation. This part offers performance advantages including faster write cycle time (5ms vs. 10ms) and lower minimum supply voltage (1.8V vs. 2.7V). ROHS3 compliance and active product status support long-term availability. Selection of this part requires verification that the host circuit supports Microwire protocol or can be adapted to accommodate this interface standard.

Frequently Asked Questions (FAQ)

Q: Can AT93C86A-10PU-2.7 be used as a direct replacement for AT93C86A-10PI-2.7?

A: Yes. Both parts share identical electrical specifications, memory capacity, interface type, and operating ranges. The packaging difference (tube vs. DIP) does not affect functional compatibility in circuit applications.

Q: What is the difference between 3-Wire Serial and Microwire interfaces?

A: Both are serial communication protocols for EEPROM devices. 3-Wire Serial and Microwire are functionally compatible in many applications, though circuit implementation may differ. Verify that your host circuit supports Microwire protocol before selecting 93AA86C-I/P.

Q: Does 93AA86C-I/P offer performance improvements over the original part?

A: Yes. The 93AA86C-I/P provides faster write cycle time (5ms vs. 10ms) and operates at lower minimum supply voltage (1.8V vs. 2.7V). Clock frequency is also higher (3 MHz vs. 2 MHz).

Q: Are both substitute parts RoHS compliant?

A: Yes. Both AT93C86A-10PU-2.7 and 93AA86C-I/P are ROHS3 compliant, whereas the original AT93C86A-10PI-2.7 is RoHS non-compliant.

Q: What is the package compatibility between these parts?

A: All three parts use identical 8-DIP (0.300", 7.62mm) through-hole packaging, ensuring mechanical compatibility on PCB layouts.

Q: Which substitute should I select for new designs?

A: For new designs requiring 3-Wire Serial interface, select AT93C86A-10PU-2.7. For designs that can accommodate Microwire protocol, 93AA86C-I/P offers superior performance characteristics and extended voltage range.

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