AT45DB161E-SHFHC-T Equivalent & Substitute Parts

Part Overview

The AT45DB161E-SHFHC-T is a 16Mbit FLASH memory IC manufactured by Renesas Electronics Corporation, designed for SPI interface applications operating at 85 MHz. This device is actively produced and widely used in embedded systems requiring non-volatile storage with SPI serial communication. Substitute parts are identified to address packaging variations, inventory availability, and interface capability requirements while maintaining electrical and mechanical compatibility within the AT45DB161 product family.

Key Parameters

Parameter	Value
Memory Size	16Mbit
Memory Format	FLASH
Memory Interface	SPI
Clock Frequency	85 MHz
Memory Organization	528 Bytes x 4096 pages
Voltage Supply Range	2.3V ~ 3.6V
Operating Temperature	-40°C ~ 85°C
Package Type	8-SOIC (0.209", 5.30mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the AT45DB161E-SHFHC-T are qualified based on the following criteria:

Primary Substitution Criteria:

Memory capacity: 16Mbit
Memory format: FLASH
Package type: 8-SOIC (0.209", 5.30mm Width)
Mounting type: Surface Mount
Voltage supply range: 2.3V ~ 3.6V
Clock frequency: 85 MHz
RoHS compliance: ROHS3 Compliant
Moisture sensitivity level: 1 (Unlimited)

Packaging Variation: The main part AT45DB161E-SHFHC-T is supplied in Tape & Reel (TR) format. Substitutes AT45DB161E-SHF-T and AT45DB161E-SHFHA-T are available in Cut Tape (CT) & Digi-Reel® packaging, providing equivalent electrical performance with alternative distribution formats.

Interface Enhancement: The AT45DQ161-SHFHD-T provides SPI - Quad I/O capability as an alternative to standard SPI, enabling higher data throughput while maintaining backward compatibility with the same 16Mbit capacity and 8-SOIC package.

Parameter Comparison

Parameter	AT45DB161E-SHFHC-T	AT45DB161E-SHF-T	AT45DB161E-SHFHA-T	AT45DQ161-SHFHD-T
Manufacturer	Renesas Electronics	Renesas Electronics	Renesas Electronics	Renesas Electronics
Memory Size	16Mbit	16Mbit	16Mbit	16Mbit
Memory Format	FLASH	FLASH	FLASH	FLASH
Memory Interface	SPI	SPI	SPI	SPI - Quad I/O
Clock Frequency	85 MHz	85 MHz	85 MHz	85 MHz
Memory Organization	528 Bytes x 4096 pages	528 Bytes x 4096 pages	528 Bytes x 4096 pages	528 Bytes x 4096 pages
Write Cycle Time - Word	8µs	8µs	8µs	8µs
Write Cycle Time - Page	4ms	4ms	4ms	6ms
Voltage Supply Range	2.3V ~ 3.6V	2.3V ~ 3.6V	2.3V ~ 3.6V	2.3V ~ 3.6V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 105°C
Package Type	8-SOIC	8-SOIC	8-SOIC	8-SOIC
Packaging Format	Tape & Reel (TR)	Cut Tape (CT) & Digi-Reel®	Cut Tape (CT) & Digi-Reel®	Tape & Reel (TR)
Product Status	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

AT45DB161E-SHF-T and AT45DB161E-SHFHA-T: These parts are direct electrical equivalents to the AT45DB161E-SHFHC-T, differing only in packaging format (Cut Tape & Digi-Reel® versus Tape & Reel). Selection between these variants depends on procurement and assembly requirements. All three maintain identical electrical specifications, operating parameters, and compliance certifications.

AT45DQ161-SHFHD-T: This part extends the operating temperature range to -40°C ~ 105°C and implements SPI - Quad I/O interface capability. The page write cycle time increases from 4ms to 6ms. This device is suitable for applications requiring enhanced temperature performance or higher data throughput via quad I/O mode, provided the system design supports quad interface operation. Backward compatibility with standard SPI mode is maintained.

All substitute parts carry Active product status and ROHS3 compliance, ensuring long-term availability and regulatory conformance.

Frequently Asked Questions (FAQ)

Q: Can AT45DB161E-SHF-T be used as a direct replacement for AT45DB161E-SHFHC-T?

A: Yes. Both parts are electrically identical with matching memory capacity (16Mbit), interface (SPI), clock frequency (85 MHz), voltage range (2.3V ~ 3.6V), and operating temperature (-40°C ~ 85°C). The difference is packaging format: AT45DB161E-SHFHC-T is supplied in Tape & Reel, while AT45DB161E-SHF-T is supplied in Cut Tape & Digi-Reel®. PCB footprint and electrical performance are identical.

Q: What is the difference between AT45DB161E-SHFHA-T and AT45DB161E-SHF-T?

A: Both are electrically equivalent to the main part. The difference lies in packaging format and inventory availability. AT45DB161E-SHFHA-T offers 2068 pcs in stock versus 1900 pcs for AT45DB161E-SHF-T. Both use Cut Tape & Digi-Reel® packaging. Selection depends on quantity requirements and procurement lead times.

Q: When should AT45DQ161-SHFHD-T be selected instead of AT45DB161E-SHFHC-T?

A: AT45DQ161-SHFHD-T is selected when: (1) operating temperature must exceed 85°C up to 105°C, or (2) the system design implements SPI - Quad I/O interface for higher data throughput. The page write cycle time is 6ms versus 4ms for standard SPI variants. Standard SPI mode compatibility is maintained for backward compatibility.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed parts—AT45DB161E-SHFHC-T, AT45DB161E-SHF-T, AT45DB161E-SHFHA-T, and AT45DQ161-SHFHD-T—are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited).

Q: What is the significance of the 8-SOIC package specification?

A: The 8-SOIC (0.209", 5.30mm Width) package is the standard surface-mount form factor for all listed parts. This ensures identical PCB footprint compatibility across all substitutes, allowing direct board-level replacement without layout modifications.

Q: Can AT45DQ161-SHFHD-T operate in standard SPI mode?

A: Yes. AT45DQ161-SHFHD-T supports both standard SPI and Quad I/O modes. Systems designed for standard SPI operation will function with this part, though quad I/O capability will remain unused unless the firmware is updated to utilize it.

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