TDA8024 Description
The TDA8024 is a plete and cost-efficient analog interface for asynchronous 3 V or 5 V smart cards. It can be placed between the card and the microcontroller to perform all supply, protection and control functions. Very few external ponents are required.
TDA8024 Key Features
- IC card interface
- 3 V or 5 V supply for the IC (VDD and GND)
- Three specifically protected half-duplex bidirectional buffered I/O lines to card contacts
- DC-to-DC converter for VCC generation separately powered from a 5 V 20% supply
- 3 V or 5 V 5% regulated card supply voltage (VCC) with appropriate decoupling has
- ICC < 80 mA at VDDP = 4 V to 6.5 V
- Handles current spikes of 40 nAs up to 20 MHz
- Controls rise and fall times
- Filtered overload detection at approximately 120 mA
- Thermal and short-circuit protection on all card contacts
TDA8024 Applications
- IC card readers for banking