Simplified Block Diagram
Click any title below to view the detail page where available.
- Analog Interface and Level Shifting for IC Card Communication
- ±8kV (min) ESD (HBM) Protection on Card Interfaces
- Ultra-Low Stop-Mode Current, Less Than 10nA Typical
- Internal IC Card Supply-Voltage Generation
- 5.0V ±5%, 80mA (max)
- 3.0V ±8%, 65mA (max)
- 1.8V ±10%, 30mA (max)
- Automatic Card Activation and Deactivation Controlled by Dedicated Internal Sequencer
- I/O Lines from Host Directly Level Shifted for Smart Card Communication
- Flexible Card Clock Generation, Supporting External Crystal Frequency Divided by 1, 2, 4, or 8
- High-Current, Short-Circuit and High-Temperature Protection
- Low Active-Mode Current
- Access Control
- Automated Teller Machines
- Banking Applications
- Debit/Credit Payment Terminals
- Pay/Premium Television
- PIN Pads
- POS Terminals
The DS8313 is designed to interface between a system microcontroller and the smart card interface, providing all power supply, protection, and level shifting required for IC card applications.
The DS8314 is similar to the DS8313, but only uses one analog (smart card) power supply. Therefore, the device has reduced ability to provide power to smart cards, but it is still sufficient for many applications, allowing the DS8314 to drop into many TDA8024 sockets without hardware changes.
The DS8313L and DS8314L use a negative polarity-presence detect instead of the default positive-polarity detect. Both devices are available in a 28-pin SO package.