Overview
The TDA8034HN/C2J, produced by NXP USA Inc., is a cost-effective analog interface designed for asynchronous and synchronous smart cards. This integrated circuit operates at multiple voltage levels, including 5 V, 3 V, and 1.8 V, making it versatile for various smart card applications. The TDA8034HN/C2J provides all necessary supply, protection, and control functions between a smart card and a microcontroller, using few external components. This device is particularly noted for its low power consumption, especially in Deep Shutdown mode, and its robust protection features.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| VDDP Power Supply Voltage | VCC = 5 V | 4.85 | 5 | 5.5 | V |
| VDD Power Supply Voltage | VCC = 3 V or 1.8 V | 2.7 | 3.3 | 3.6 | V |
| VCC Supply Voltage | 5 V card; Active mode | 4.75 | 5.0 | 5.25 | V |
| VCC Supply Voltage | 3 V card; Active mode | 2.85 | 3.05 | 3.15 | V |
| VCC Supply Voltage | 1.8 V card; Active mode | 1.71 | 1.83 | 1.89 | V |
| Output Current (Io) | Shutdown mode; pin VCC connected to ground | - | - | -1 mA | mA |
| Thermal Resistance (Rth(j-a)) | HVQFN24 package | - | 53 | - | K/W |
Key Features
- Integrated circuit smart card interface in an HVQFN24 package.
- Supports 5 V, 3 V, or 1.8 V smart card supply.
- Very low power consumption in Deep Shutdown mode.
- Three protected half-duplex bidirectional buffered I/O lines (C4, C7, and C8).
- VCC regulation with controlled rise and fall times and filtered overload detection.
- Voltage supervisor with Power-On Reset (POR) and supply drop-out detection.
- Automatic deactivation sequence for session end.
Applications
The TDA8034HN/C2J is designed for use in various smart card applications, including:
- Payment systems (e.g., credit/debit cards, prepaid cards)
- Identification and authentication systems (e.g., ID cards, access control)
- Public transportation systems (e.g., transit cards)
- Healthcare and medical systems (e.g., patient data cards)
- Secure communication devices and terminals
Q & A
- What is the TDA8034HN/C2J used for?
The TDA8034HN/C2J is used as an analog interface for asynchronous and synchronous smart cards, providing supply, protection, and control functions between the smart card and a microcontroller.
- What voltage levels does the TDA8034HN/C2J support?
The device supports 5 V, 3 V, and 1.8 V smart card supply voltages.
- What is the package type of the TDA8034HN/C2J?
The TDA8034HN/C2J comes in an HVQFN24 package.
- How does the TDA8034HN/C2J manage power consumption?
The device features very low power consumption, especially in Deep Shutdown mode.
- What protection features does the TDA8034HN/C2J offer?
The device includes three protected half-duplex bidirectional buffered I/O lines and VCC regulation with controlled rise and fall times and filtered overload detection.
- How does the voltage supervisor function in the TDA8034HN/C2J?
The voltage supervisor monitors the voltage of the VDDP, VDD, and VDD(INTF) supplies, providing both Power-On Reset (POR) and supply drop-out detection during a card session.
- What happens during the deactivation sequence of the TDA8034HN/C2J?
During the deactivation sequence, the microcontroller sets CMDVCCN high, and the device executes an automatic sequence to return to the inactive state, including stopping the clock, pulling I/O lines low, and reducing VCC to 0 V.
- What is the thermal resistance of the TDA8034HN/C2J in the HVQFN24 package?
The thermal resistance from junction to ambient in free air is 53 K/W.
- What are some common applications of the TDA8034HN/C2J?
Common applications include payment systems, identification and authentication systems, public transportation systems, and healthcare systems.
- Where can I find detailed documentation and design files for the TDA8034HN/C2J?
Detailed documentation and design files can be found on the NXP Semiconductors website and through their engineering services.
