DS2431：1024-Bit 1-Wire EEPROM _ BDTIC a Leading Distributor in China

DS2431：1024-Bit 1-Wire EEPROM

1Kb Serial EEPROM Operates from Single-Contact 1-Wire Interface

The DS2431 is a 1024-bit, 1-Wire® EEPROM chip organized as four memory pages of 256 bits each. Data is written to an 8-byte scratchpad, verified, and then copied to the EEPROM memory. As a special feature, the four memory pages can individually be write protected or put in EPROM-emulation mode, where bits can only be changed from a 1 to a 0 state. The DS2431 communicates over the single-conductor 1-Wire bus. The communication follows the standard 1-Wire protocol. Each device has its own unalterable and unique 64-bit ROM registration number that is factory lasered into the chip. The registration number is used to address the device in a multidrop, 1-Wire net environment.

Key Features

Easily Add Traceability and Relevant Information to Any Individual System
- 1024 Bits of EEPROM Memory Partitioned Into Four Pages of 256 Bits
- Individual Memory Pages Can Be Permanently Write Protected or Put in EPROM-Emulation Mode (Write to 0)
- Switchpoint Hysteresis and Filtering to Optimize Performance in the Presence of Noise
Minimalist 1-Wire Interface Lowers Cost and Interface Complexity
- IEC 1000-4-2 Level 4 ESD Protection (±8kV Contact, ±15kV Air, typ)
- Reads and Writes Over a Wide Voltage Range from 2.8V to 5.25V from -40°C to +85°C
- Communicates to Host with a Single Digital Signal at 15.4kbps or 125kbps

DS2431: Typical Operating Circuit

Applications/Uses

Accessory/PC Board Identification
After-Market Management of Consumables
Analog Sensor Calibration Including IEEEP 1451.4 Smart Sensors
Ink and Toner Print Cartridge Identification
Medical Sensor Calibration Data Storage

DataSheet

title	Download file
DS2431 Data Sheet	DS2431.pdf

Parametrics

Part Number	Applications	Memory Type	Memory Size	Bus Type	V_SUPPLY (V)	V_SUPPLY (V)	Package/Pins	Budgetary Price
Part Number	Applications	Memory Type	Memory Size	Bus Type	min	max	Package/Pins	See Notes
DS2431	Asset Tracking Inventory Medical Consumable ID PCB ID and Authentication Peripheral ID and Control Print Cartridge Authentication Rack Card ID Security	EEPROM	1K x 1	1-Wire	2.8	5.25	SFN/2 TDFN-EP/6 TO92/3 TSOC/6 UCSP/6	$0.70 @1k

Design kits & evaluation modules

Quality and Environmental Data

DS2431.pdf

Ordering Information

Part Number	Status	Recommended Replacement	Package	Temp	RoHS
DS2431	No Longer Available	DS2431+	TO92,;3 pin;19.5 mm²	-40°C to +85°C	No
DS2431+	Active		TO92,;3 pin;19.5 mm²	-40°C to +85°C	Lead Free
DS2431+T&R	Active		TO92,;3 pin;27.6 mm²	-40°C to +85°C	Lead Free
DS2431/T&R	No Longer Available	DS2431+T&R	TO92,;3 pin;27.6 mm²	-40°C to +85°C	No
DS2431G+T&R	Active		SFN,;2 pin;37.2 mm²	-40°C to +85°C	Lead Free
DS2431G+U	Active		SFN,;2 pin;37.2 mm²	-40°C to +85°C	Lead Free
DS2431GA+T&R	Active		SFN,;2 pin;23.8 mm²	-40°C to +85°C	Lead Free
DS2431GA+U	Active		SFN,;2 pin;23.8 mm²	-40°C to +85°C	Lead Free
DS2431GB+T	Active		SFN,;2 pin;17.9 mm²	-40°C to +85°C	Lead Free
DS2431GB+U	Active		SFN,;2 pin;17.9 mm²	-40°C to +85°C	Lead Free
Part Number	Status	Recommended Replacement	Package	Temp	RoHS
DS2431P+	Active		TSOC,;6 pin;17.8 mm²	-40°C to +85°C	Lead Free
DS2431P+T&R	Active		TSOC,;6 pin;17.8 mm²	-40°C to +85°C	Lead Free
DS2431P/T&R	No Longer Available	DS2431P+T&R	TSOC,;6 pin;17.8 mm²	-40°C to +85°C	No
DS2431Q+T&R	Active		TDFN-EP,;6 pin;9.6 mm²	-40°C to +85°C	Lead Free
DS2431Q+U	Active		TDFN-EP,;6 pin;9.6 mm²	-40°C to +85°C	Lead Free
DS2431X	No Longer Available	DS2431X-S+	UCSPR;	-40°C to +85°C	See data sheet
DS2431X+	No Longer Available	DS2431X-S+	UCSP,;6 pin;3 mm²	-40°C to +85°C	Lead Free
DS2431X+U	Active		UCSP,;6 pin;3 mm²	-40°C to +85°C	Lead Free
DS2431X-S+	Active		UCSP,;6 pin;3 mm²	-40°C to +85°C	Lead Free