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Analog Devices DS24B33+ — Memory (DRAM / SRAM / Flash / EEPROM)

Maxim DS24B33+ EEPROM, 4Kbit 1-Wire TO-92-3, 2 µs Access

MPNDS24B33+
End of Life

Maxim DS24B33+, 4Kbit Serial EEPROM, 1-Wire® interface, 2 µs access time, 2.8V-5.25V supply, TO-92-3 through-hole package, -40°C to 85°C.

$3.51Ref. price · indicative, final on quote
PackagingTO-226-3, TO-92-3 (TO-226AA)
RoHSROHS3 Compliant
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

DS24B33+ specifications
ParameterValue
Memory typeNon-Volatile
MountingThrough Hole
Voltage2.8V ~ 5.25V
Memory interface1-Wire®
Operating temperature-40°C ~ 85°C (TA)
PackageBulk
TechnologyEEPROM
Access time2 µs
Memory size4Kbit
Memory formatEEPROM
CaseTO-226-3, TO-92-3 (TO-226AA)
Memory organization256 x 16

Product details

What the 2 µs access time means for your 1-Wire bus

The 2 µs access time sets the timing for the 1-Wire read/write slots; at standard 15 µs time slots this part has margin, so no bus-timing tweaks needed when dropping it into an existing 1-Wire network. Memory is organized as 256 x 16 bits, which is enough for a few dozen calibration constants or a 512-byte configuration block — not for firmware images, but exactly the size you want for a trim pot replacement or a product-ID string. Supply range spans 2.8V to 5.25V, so it runs cleanly on a 3.3V or 5V logic rail without a level translator.

Package and mounting — through-hole simplicity

The DS24B33+ comes in a TO-92-3 through-hole package (TO-226-3, TO-92-3 TO-226AA). The through-hole mount also makes it a practical choice for retrofit or repair work where you're replacing a socketed part.

Frequently asked questions

Can DS24B33+ replace DS24B33?

The DS24B33+ is the lead-free (ROHS3 compliant) version of the DS24B33. Functionally identical — same 4Kbit 1-Wire EEPROM, same TO-92-3 package, same 2 µs access time, same 2.8V-5.25V supply range. The '+' suffix indicates ROHS compliance. It is a drop-in replacement for the non-plus version in any design that requires ROHS compliance.

Is DS24B33+ compatible with 5V logic?

Yes. The supply voltage range of 2.8V to 5.25V means the DS24B33+ operates directly on a 5V logic rail without any level shifting. The 1-Wire bus interface is designed to work with standard 5V logic levels, and the 2 µs access time is compatible with typical 1-Wire timing at 5V.