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Renesas Electronics AT45DQ161-SHF-T — DC-DC Power Modules

AT45DQ161-SHF-T 16Mbit SPI Quad I/O Flash, 85 MHz, 8-SOIC

MPNAT45DQ161-SHF-T
End of Life

Microchip/Adesto AT45DQ161-SHF-T, 16Mbit Serial Flash, SPI/Quad I/O, 85 MHz, 2.3V-3.6V, 8-SOIC, -40°C to 105°C, Tape & Reel.

$2.77Ref. price · indicative, final on quote
Renesas Electronics AT45DQ161-SHF-T datasheet (PDF)
Packaging8-SOIC (0.209", 5.30mm Width)
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

AT45DQ161-SHF-T specifications
ParameterValue
Memory typeNon-Volatile
MountingSurface Mount
Supply voltage2.3V ~ 3.6V
Clock frequency85 MHz
Memory interfaceSPI - Quad I/O
Operating temperature-40°C ~ 105°C (TC)
PackageTape & Reel (TR); Cut Tape (CT)
TechnologyFLASH
Memory size16Mbit
Memory formatFLASH
Case8-SOIC (0.209\", 5.30mm Width)
Memory organization528 Bytes x 4096 pages
Write cycle time - word, page8µs, 6ms

Product details

The AT45DQ161-SHF-T is a 16 Mbit serial flash memory from Microchip Technology (formerly Adesto) built on a non-volatile FLASH process. The memory is organized as 4096 pages of 528 bytes each, which maps well to code shadowing, data logging, or configuration storage in embedded systems. It operates from a 2.3 V to 3.6 V supply and is rated over the industrial temperature range of -40°C to 105°C, so it can sit on a motor-drive control board or an outdoor telecom module without thermal concern.

Package and mounting — 8-SOIC wide-body

The part comes in an 8-pin SOIC wide-body package (0.209-inch body width, 5.30 mm), surface-mount only.

Frequently asked questions

What is the maximum clock frequency for AT45DQ161-SHF-T?

The SPI clock frequency is rated at 85 MHz. In Quad I/O mode, this yields an effective data rate of 340 Mbps.

Is AT45DQ161-SHF-T compatible with 3.3V logic?

Yes, the supply voltage range of 2.3 V to 3.6 V covers 3.3 V operation directly. The SPI and Quad I/O signal levels track the supply rail, so a 3.3 V host controller interfaces without level shifters.

What are alternatives to AT45DQ161-SHF-T?

The closest functional peer is the AT45DQ161-SHF2B-T, which shares the same 16 Mbit density, 85 MHz clock, Quad I/O interface, and 8-SOIC package. The -SHF2B variant is a direct second-source candidate for dual-sourcing. The AT45DQ161-SSHF-T is identical except for the temperature range: -40°C to 85°C instead of -40°C to 105°C. The AT45DB161E-SSHFHA-T uses standard SPI (no Quad I/O) and has a faster page program time of 4 ms, but operates only to 85°C.