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1-Wire®—Most Efficient ID and Authentication Solution for Medical Consumables
Spare connector pins between the host system and accessory are typically limited. Consequently, it is a genuine challenge to add authentication and usage monitoring without increasing connector complexity and cost. The 1-Wire® product line not only solves all these host/accessory connectivity requirements, but also enables implementation with only a single, dedicated connector contact.
Unique SFN packaging allows the 1-Wire device to attach easily to nonelectronic peripherals like medical sensors and reagent bottles. The SFN package is based on the industry-standard DFN/QFN, and can be mounted with snap-fit or adhesive into a recessed area. The 1-Wire authentication and monitoring features are thus accomplished with a single, dedicated connector contact, which reduces connector complexity and cost.
New SFN packaging simplifies adding 1-Wire ICs to nonelectronic peripherals.
1-Wire Versatility
- Automatically Calibrates Sensors or Consumables
- Determines Host System Operating Mode Appropriate to the Attached Peripheral
- Ensures Reliability and Quality, Which Can Be Undermined by Low-Quality OEM Knock-Off Products
| 1-Wire Devices Commonly Used for Accessory and Sensor Applications |
| Part |
Memory Type |
Memory Size (Bits) |
Additional Features |
Packages |
| DS2431 |
EEPROM |
1k |
Write protection, OTP modes |
6-TSOC, TO-92, SFN |
DS2432
DS28E01-100 |
EEPROM |
1k |
SHA-1 authentication |
6-TSOC, UCSP™, SFN |
| DS28EC20 |
EEPROM |
20k |
Write protection, OTP modes |
6-TSOC, TO-92 |
| DS2433 |
EEPROM |
4k |
— |
8-SO, PR35, flip chip |
| DS250x |
EPROM |
1k, 16k |
Write protection |
6-TSOC, TO-92, CSP, 3-SOT23, 8-SO |
| DS2413 |
ROM only |
64 |
Dual 20V/20mA GPIO |
6-TSOC |
DS2401
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ROM only |
64 |
— |
6-TSOC, SOT23, TO-92, flip chip |
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