Overview
The TDA8024TT/C1,118 is a comprehensive and cost-efficient analog interface designed for asynchronous 3 V or 5 V smart cards, manufactured by NXP USA Inc. This component serves as an intermediary between the smart card and the microcontroller, handling all necessary supply, protection, and control functions. It requires very few external components, making it a streamlined solution for smart card interfaces. The TDA8024TT/C1,118 is compatible with various standards including ISO 7816, GSM11.11, and EMV (payment systems), and it is a direct replacement for the TDA8004AT.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VDD supply voltage | 2.7 | - | 6.5 | V |
| VDDP DC-to-DC converter supply voltage | 4.0 | 5.0 | 6.5 | V |
| VCC = 5 V; ICC | - | - | 80 | mA |
| VCC = 3 V; ICC | - | - | 65 | mA |
| Total power dissipation (continuous operation) | - | - | 0.56 | W |
| Ambient temperature | -25 | - | 85 | °C |
Key Features
- IC card interface for 3 V or 5 V smart cards
- DC-to-DC converter for generating 5 V or 3 V card supply
- 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
- Enhanced ESD protection on card side (>6 kV)
- 26 MHz integrated crystal oscillator and clock generation for cards up to 20 MHz
- Non-inverted control of RST via pin RSTIN
- Built-in debounce on card presence contacts
- 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 TDA8024TT/C1,118 used for? The TDA8024TT/C1,118 is used as an analog interface for asynchronous 3 V or 5 V smart cards, providing supply, protection, and control functions between the card and the microcontroller.
- What are the compatible voltage levels for the TDA8024TT/C1,118? The component supports 3 V and 5 V smart cards.
- What standards is the TDA8024TT/C1,118 compatible with? It is compatible with ISO 7816, GSM11.11, and EMV (payment systems) standards.
- What type of protection does the TDA8024TT/C1,118 offer? It offers thermal and short-circuit protection on all card contacts, as well as enhanced ESD protection.
- What is the role of the DC-to-DC converter in the TDA8024TT/C1,118? The DC-to-DC converter generates the 5 V or 3 V card supply voltage.
- What is the maximum current handling capability of the TDA8024TT/C1,118? It can handle current spikes of 40 nA up to 20 MHz and has a regulated card supply voltage with appropriate decoupling.
- What is the purpose of the integrated crystal oscillator? The 26 MHz integrated crystal oscillator generates clock signals for cards up to 20 MHz.
- How does the TDA8024TT/C1,118 handle card presence detection? It includes built-in debounce on card presence contacts.
- What is the operating temperature range of the TDA8024TT/C1,118? The component operates within an ambient temperature range of -25°C to +85°C.
- What package types are available for the TDA8024TT/C1,118? It is available in TSSOP28 (Thin Shrink Small Outline Package) and SO28 (Small Outline Package) packages.
