TMS37145

SCBS879 – MAY 2012

www.ti.com

Operating Characteristics

Part Number

TMS37145TEAIE, TMS37145TEAIEG

Features

Immobilizer plus microcontroller with integrated power management

DST80 authentication logic

80-bit key length, 4-byte or 5-byte challenge, 3-byte signature

Mutual authentication: 65 ms

DST80 encryption time

Fast authentication: 42 ms

Transponder

Transmission principle

HDX (half duplex telegram protocol)

134.2 kHz

Operating frequency

Integrated resonant frequency trimming capability via LF or test interface

Security

Challenge/response, mutual authentication

Downlink

100% AM, PPM bit coding with 2 kbit/s (typ)

Uplink

FSK modulation with 7.9 kbit/s (typ)

Read time for an encryption

PPM: 60 ms (typ) (including 20-ms charge time)

Read time for mutual authentication

PPM: 85 ms (typ) (including 20-ms charge time)

Protocol transmission security

16-bit block check character

Activation field strength

141.5 dBµA/m

Minimum required operation Q-factor

30

48-byte free available EEPROM user memory

EEPROM memory

75 bytes

32-bit unique serial number

Two 80-bit security keys

EEPROM endurance

Key learn-in

Special selective addressing to provide secure learn-in procedure

Storage temperature

-40°C to 100°C (175°C for 5 minutes)

Operating temperature

-40°C to 85°C

Case material

Plastic

Protection class

IP 68

EMC

Programmed code is not affected by natural electromagnetic interference or X-rays

Mechanical shock

IEC 68-2-27, Test Ea; 200 g, half sine, 3 ms, 6 shocks per axis

Vibration

IEC 68-2-6, Test Fc; 10 to 500 Hz, 1.65 mm peak to peak, 10 g, 4 hours per axis

Dimensions

12.0 mm ± 0.2 mm x 6.0 mm ± 0.2 mm x 3.0 mm ± 0.05 mm

Weight

0.4 g

Packaging

Bulk (2000 units per box)

2

Submit Documentation Feedback

Copyright © 2012, Texas Instruments Incorporated

Product Folder Link(s): TMS37145