AT25160BN-SH-T Equivalent & Substitute Parts

Part Overview

The AT25160BN-SH-T is a 16Kbit EEPROM memory IC manufactured by Microchip Technology, featuring SPI interface with 20 MHz clock frequency and 8-SOIC surface mount packaging. This part is classified as obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications. Substitute parts must maintain compatibility across memory capacity, interface protocol, voltage supply range, and physical packaging dimensions while accounting for variations in clock frequency and operating temperature ranges.

Key Parameters

Parameter	Value
Memory Size	16Kbit
Memory Organization	2K x 8
Memory Interface	SPI
Clock Frequency	20 MHz
Write Cycle Time	5ms
Voltage Supply Range	1.8V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following mandatory parameters:

Memory Capacity & Organization: All substitutes must provide 16Kbit capacity in 2K x 8 organization
Interface Protocol: SPI interface is required for protocol compatibility
Voltage Supply Range: Substitute must support the full 1.8V ~ 5.5V range or a compatible subset
Package Dimensions: 8-SOIC form factor with 0.154" (3.90mm) width is required for PCB compatibility
Write Cycle Time: 5ms specification must be met or exceeded
Compliance: ROHS3 compliance required

Clock frequency variations are acceptable when lower frequencies do not impact system performance. Operating temperature range extensions (such as -40°C ~ 125°C) represent functional improvements and are acceptable substitutes. Package variations within the 8-SOIC family (8-SOP, 8-SOP-J) with equivalent pin spacing are mechanically compatible.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Clock Frequency	Voltage Supply	Operating Temp	Write Cycle Time	Package	Product Status
AT25160BN-SH-T	Microchip Technology	16Kbit	20 MHz	1.8V ~ 5.5V	-40°C ~ 85°C	5ms	8-SOIC	Obsolete
25AA160A-I/SN	Microchip Technology	16Kbit	10 MHz	1.8V ~ 5.5V	-40°C ~ 85°C	5ms	8-SOIC	Active
25AA160AT-I/SN	Microchip Technology	16Kbit	10 MHz	1.8V ~ 5.5V	-40°C ~ 85°C	5ms	8-SOIC	Active
25AA160BT-I/SN	Microchip Technology	16Kbit	10 MHz	1.8V ~ 5.5V	-40°C ~ 85°C	5ms	8-SOIC	Active
25AA160CT-I/SN	Microchip Technology	16Kbit	10 MHz	1.8V ~ 5.5V	-40°C ~ 85°C	5ms	8-SOIC	Active
25AA160DT-E/SN	Microchip Technology	16Kbit	10 MHz	1.8V ~ 5.5V	-40°C ~ 125°C	5ms	8-SOIC	Active
25AA160DT-I/SN	Microchip Technology	16Kbit	10 MHz	1.8V ~ 5.5V	-40°C ~ 85°C	5ms	8-SOIC	Active
25AA160T-I/SN	Microchip Technology	16Kbit	1 MHz	1.8V ~ 5.5V	-40°C ~ 85°C	5ms	8-SOIC	Active
AT25160B-SSHL-T	Microchip Technology	16Kbit	20 MHz	1.8V ~ 5.5V	-40°C ~ 85°C	5ms	8-SOIC	Active
BR25H160F-2CE2	Rohm Semiconductor	16Kbit	10 MHz	2.5V ~ 5.5V	-40°C ~ 125°C	4ms	8-SOP	Active
BR25L160FJ-WE2	Rohm Semiconductor	16Kbit	5 MHz	1.8V ~ 5.5V	-40°C ~ 85°C	5ms	8-SOP-J	Not For New Designs

Engineering Selection Recommendations

Primary Recommendation: AT25160B-SSHL-T

AT25160B-SSHL-T is the direct functional equivalent with matching 20 MHz clock frequency, identical voltage supply range, and equivalent operating temperature specification. This part maintains active product status with verified DiGi-Electronics programmability and high inventory availability (65,300 units). ROHS3 compliance and identical packaging ensure seamless integration as a drop-in replacement.

Secondary Recommendations (Clock Frequency Reduction Acceptable):

The 25AA160 series variants (25AA160A-I/SN, 25AA160AT-I/SN, 25AA160BT-I/SN, 25AA160CT-I/SN, 25AA160DT-I/SN, 25AA160T-I/SN) are functionally compatible substitutes when system design permits operation at reduced clock frequencies (1 MHz to 10 MHz). All maintain identical memory capacity, SPI interface, voltage supply range, and 8-SOIC packaging. These parts carry active product status with substantial inventory availability.

Extended Temperature Option:

25AA160DT-E/SN extends operating temperature to -40°C ~ 125°C, suitable for applications requiring enhanced thermal performance while maintaining all other electrical specifications.

Cross-Manufacturer Alternative:

BR25H160F-2CE2 (Rohm Semiconductor) provides 16Kbit SPI EEPROM with automotive-grade qualification (AEC-Q100) and extended temperature range (-40°C ~ 125°C). Voltage supply range is restricted to 2.5V ~ 5.5V. Package variant (8-SOP vs. 8-SOIC) requires PCB layout verification for mechanical compatibility.

BR25L160FJ-WE2 is classified as "Not For New Designs" and should not be selected for new applications despite functional compatibility.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with lower clock frequency than the original AT25160BN-SH-T?

A: Yes, if your system design does not require 20 MHz operation. Lower clock frequencies (10 MHz, 5 MHz, 1 MHz) are backward compatible and will function correctly in circuits designed for the original part. Verify that your application's timing requirements do not mandate the higher frequency before substitution.

Q: What is the difference between 8-SOIC and 8-SOP packaging?

A: Both are 8-pin surface mount packages with similar pin spacing (0.154" to 0.173" width). The primary difference is package body width and lead configuration. Mechanical compatibility requires PCB footprint verification. Rohm BR25H160F-2CE2 uses 8-SOP (0.173" width) versus Microchip's 8-SOIC (0.154" width). Consult PCB layout guidelines before substituting between these variants.

Q: Is BR25L160FJ-WE2 suitable for new designs?

A: No. BR25L160FJ-WE2 carries "Not For New Designs" status, indicating Rohm Semiconductor has discontinued active support. This part should only be used for maintenance of existing products. For new applications, select AT25160B-SSHL-T or active 25AA160 series variants.

Q: What voltage range must I verify when substituting with BR25H160F-2CE2?

A: BR25H160F-2CE2 operates at 2.5V ~ 5.5V, which is narrower than the original AT25160BN-SH-T specification of 1.8V ~ 5.5V. If your circuit operates below 2.5V, this Rohm part is not compatible. Microchip alternatives maintain the full 1.8V ~ 5.5V range.

Q: Can I substitute AT25160B-SSHL-T directly without circuit modifications?

A: Yes. AT25160B-SSHL-T is electrically and mechanically equivalent to AT25160BN-SH-T with identical clock frequency (20 MHz), voltage supply range (1.8V ~ 5.5V), operating temperature (-40°C ~ 85°C), and 8-SOIC packaging. No design changes are required.

Q: What is the significance of "DiGi-Electronics Programmable" verification?

A: This indicates the part has been tested and verified for compatibility with DiGi-Electronics programming equipment. AT25160B-SSHL-T and BR25L160FJ-WE2 carry verified status. Unverified parts may require alternative programming methods or equipment validation before production use.

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