Product Summary

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 applications of the DS2431 include: (1)Accessory/PCB Identification; (2)Medical Sensor Calibration Data Storage; (3)Analog Sensor Calibration Including IEEE P1451.4 Smart Sensors; (4)Ink and Toner Print Cartridge Identification; (5)After-Market Management of Consumables.

Parametrics

DS2431 absolute maximum ratings: (1)IO Voltage Range to GND: -0.5V to +6V; (2)IO Sink Current: 20mA; (3)Operating Temperature Range: -40℃ to +85℃; (4)Junction Temperature: +150℃; (5)Storage Temperature Range: -55℃ to +125℃; (6)Soldering Temperature: Refer to the IPC/JEDEC J-STD-020 Specification.

Features

DS2431 features: (1)1024 Bits of EEPROM Memory Partitioned Into Four Pages of 256 Bits; (2)Individual Memory Pages Can Be Permanently Write Protected or Put in EPROM-Emulation Mode; (3)Switchpoint Hysteresis and Filtering to Optimize Performance in the Presence of Noise; (4)IEC 1000-4-2 Level 4 ESD Protection (±8kV Contact, ±15kV Air, Typical); (5)Reads and Writes Over a Wide Voltage Range from 2.8V to 5.25V from -40℃ to +85℃; (6)Communicates to Host with a Single Digital Signal at 15.4kbps or 125kbps Using 1-Wire Protocol; (7)Also Available as Automotive Version Meeting AEC-Q100 Grade 1 Qualification Requirements.

Diagrams

DS2431 diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
DS2431
DS2431

Maxim Integrated Products

EEPROM

Data Sheet

Negotiable 
DS2431/T&R
DS2431/T&R

Maxim Integrated Products

EEPROM

Data Sheet

Negotiable 
DS2431+
DS2431+

Maxim Integrated Products

EEPROM 1024-Bit 1-Wire EEPROM

Data Sheet

0-1: $0.98
1-25: $0.66
25-50: $0.48
50-100: $0.47
DS2431+T&R
DS2431+T&R

Maxim Integrated Products

EEPROM 1024-Bit 1-Wire EEPROM

Data Sheet

0-1590: $0.43
1590-2000: $0.43
DS2431G+T&R
DS2431G+T&R

Maxim Integrated Products

EEPROM 1024-Bit 1-Wire EEPROM

Data Sheet

0-1: $1.07
1-25: $0.79
25-50: $0.77
50-100: $0.68
DS2431G+U
DS2431G+U

Maxim Integrated Products

EEPROM 1024-Bit 1-Wire EEPROM

Data Sheet

0-1: $1.19
1-25: $0.80
25-50: $0.57
50-250: $0.56
DS2431GA+T&R
DS2431GA+T&R

Maxim Integrated Products

EEPROM 1024-BIT 1-W EEPROM 6.5X3.5

Data Sheet

0-1800: $0.55
1800-2500: $0.55
DS2431GA+U
DS2431GA+U

Maxim Integrated Products

EEPROM 1024-BIT 1-W EEPROM 6.5X3.5

Data Sheet

0-1: $1.19
1-25: $0.80
25-50: $0.57
50-100: $0.57