Overview
The TMS37145TEAIE from Texas Instruments is a digital signature transponder that integrates advanced security features, EEPROM, and a low-frequency (LF) immobilizer. This RFID transponder is designed to provide robust security and reliability in various applications, particularly in the automotive sector. It utilizes the DST80 authentication algorithm, which includes an 80-bit encryption key and supports both 5-byte challenge and 3-byte response protocols. The device is backward compatible with existing TI products and offers fast authentication and mutual authentication times of 42 ms and 65 ms, respectively.
Key Specifications
| Parameter | Value |
|---|---|
| Operating Frequency | 134.2 kHz |
| Encryption Algorithm | DST80, 80-bit key length |
| Challenge/Response | 5-byte challenge, 3-byte response |
| Authentication Time | Fast authentication: 42 ms, Mutual authentication: 65 ms |
| Communication Format | PWM or PPM |
| EEPROM Memory | 75 bytes (48 bytes free user memory) |
| Unique Serial Number | 32-bit |
| Operating Temperature | -40°C to 85°C |
| Storage Temperature | -40°C to 100°C (175°C for 5 minutes) |
| Package Dimensions | 12 mm × 6 mm × 3 mm |
| Weight | 0.4 g |
| Protection Class | IP 68 |
Key Features
- Low-frequency (LF) immobilizer interface with up to 4-inch (10-cm) read range.
- Integrated batteryless immobilizer interface.
- Half duplex (HDX) immobilizer communication.
- Special selective addressing mode for reliable learn-in sequence.
- 80-bit DST80 security authentication coprocessor.
- Fast authentication and mutual authentication within 42 ms and 65 ms, respectively.
- 75-byte EEPROM with 48 bytes of available user memory.
- 32-bit unique serial number.
- High EEPROM security and flexibility with write-only authentication keys and lockable pages.
- Resonant frequency trimming capability via LF or test interface.
Applications
The TMS37145TEAIE is primarily used in immobilizer systems, particularly in the automotive industry. It provides a secure and reliable method for vehicle immobilization, preventing unauthorized vehicle use. Additionally, its robust security features and EEPROM make it suitable for other applications requiring high security and data storage, such as access control systems and secure identification tags.
Q & A
- What is the operating frequency of the TMS37145TEAIE?
The operating frequency is 134.2 kHz.
- What encryption algorithm does the TMS37145TEAIE use?
The device uses the DST80 encryption algorithm with an 80-bit key length.
- How long does the fast authentication process take?
The fast authentication process takes 42 ms.
- What is the communication format of the TMS37145TEAIE?
The device supports both PWM and PPM communication formats.
- How much EEPROM memory does the TMS37145TEAIE have?
The device has 75 bytes of EEPROM memory, with 48 bytes available for user data.
- What is the unique identifier of the TMS37145TEAIE?
The device has a 32-bit unique serial number.
- What are the operating and storage temperature ranges of the TMS37145TEAIE?
The operating temperature range is -40°C to 85°C, and the storage temperature range is -40°C to 100°C (with a short-term limit of 175°C for 5 minutes).
- What is the protection class of the TMS37145TEAIE?
The device has an IP 68 protection class.
- What are the dimensions and weight of the TMS37145TEAIE?
The dimensions are 12 mm × 6 mm × 3 mm, and the weight is 0.4 g.
- What are the primary applications of the TMS37145TEAIE?
The primary application is in immobilizer systems, particularly in the automotive industry.
