Overview
The TDA8024TT/C1/S1J, produced by NXP USA Inc., is a comprehensive and cost-efficient analog interface designed for asynchronous 3 V or 5 V smart cards. This component acts as an intermediary between the smart card and the microcontroller, managing all necessary supply, protection, and control functions. It requires very few external components, making it a streamlined solution for various smart card applications.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| VDD supply voltage | 2.7 | 6.5 | V | ||
| VDDP DC-to-DC converter supply voltage | VCC = 5 V; |ICC| < 80 mA | 4.0 | 5.0 | 6.5 | V |
| VCC regulated card supply voltage | VCC = 5 V; |ICC| < 20 mA | 3.0 | 6.5 | V | |
| ICC card supply current | VCC = 5 V | 80 | mA | ||
| Tamb ambient temperature | -25 | 85 | °C | ||
| Ptot total power dissipation | Continuous operation; Tamb = -25 to +85 °C | 0.56 | W |
Key Features
- IC card interface for 3 V or 5 V smart cards
- DC-to-DC converter for generating the card supply voltage (VCC)
- Three specifically protected half-duplex bidirectional buffered I/O lines to card contacts C4, C7, and C8
- Thermal and short-circuit protection on all card contacts
- Automatic activation and deactivation sequences initiated by software or hardware events (short-circuit, card take-off, overheating, VDD or VDDP drop-out)
- Enhanced ESD protection on the card side (>6 kV)
- 26 MHz integrated crystal oscillator and clock generation for cards up to 20 MHz
- ISO 7816, GSM11.11, and EMV (payment systems) compatibility
- Built-in debounce on card presence contacts and supply supervisor for spike-killing during power-on and power-off
Applications
- IC card readers for banking
- Electronic payment systems
- Identification systems
- Pay TV systems
Q & A
- What is the primary function of the TDA8024TT/C1/S1J?
The TDA8024TT/C1/S1J acts as an analog interface between the smart card and the microcontroller, handling supply, protection, and control functions for 3 V or 5 V smart cards. - What types of smart cards does the TDA8024TT/C1/S1J support?
The component supports asynchronous 3 V or 5 V smart cards. - What kind of protection does the TDA8024TT/C1/S1J offer?
The component offers thermal and short-circuit protection on all card contacts, as well as enhanced ESD protection (>6 kV) on the card side. - How does the TDA8024TT/C1/S1J manage clock generation?
The component includes a 26 MHz integrated crystal oscillator and can generate clocks for cards up to 20 MHz, with synchronous frequency changes. - What are the compatible standards for the TDA8024TT/C1/S1J?
The component is compatible with ISO 7816, GSM11.11, and EMV (payment systems) standards. - What is the operating temperature range for the TDA8024TT/C1/S1J?
The operating temperature range is from -25 °C to +85 °C. - How does the TDA8024TT/C1/S1J handle power-on and power-off sequences?
The component includes a supply supervisor for spike-killing during power-on and power-off, as well as power-on reset capabilities. - What types of applications can the TDA8024TT/C1/S1J be used in?
The component can be used in IC card readers for banking, electronic payment systems, identification systems, and pay TV systems. - What is the total power dissipation of the TDA8024TT/C1/S1J?
The total power dissipation is up to 0.56 W during continuous operation. - What package types are available for the TDA8024TT/C1/S1J?
The component is available in TSSOP28 (thin shrink small outline package) with 28 leads and a body width of 4.4 mm.
