Overview
The TDA8034HN/C1,151, 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 provides all necessary supply, protection, and control functions between a smart card and a microcontroller, using few external components.
Key Specifications
| Parameter | Description |
|---|---|
| Package | HVQFN24 (4x4) |
| Smart Card Supply Voltage | 5 V, 3 V, or 1.8 V ± 5% |
| Power Consumption | Very low power consumption in Deep Shutdown mode |
| I/O Lines | Three protected half-duplex bidirectional buffered I/O lines (C4, C7, and C8) |
| VCC Regulation | Using two low ESR multilayer ceramic capacitors: 220 nF and 470 nF |
| Current Spikes | Up to 20 MHz, with controlled rise and fall times and filtered overload detection of approximately 120 mA |
| Debouncing Feature | Typical duration of 8 ms for card presence detection |
| Internal Pull-up Resistors | 11 kΩ, 20 kΩ, and 10 kΩ pull-up resistors on various pins |
Key Features
- Integrated circuit smart card interface in an HVQFN24 package
- Support for 5 V, 3 V, or 1.8 V smart card supply with ± 5% regulation
- Very low power consumption in Deep Shutdown mode
- Three protected half-duplex bidirectional buffered I/O lines (C4, C7, and C8)
- VCC regulation using two low ESR multilayer ceramic capacitors
- Current spikes up to 20 MHz with controlled rise and fall times and filtered overload detection
- Debouncing feature for card presence detection with a typical duration of 8 ms
- Internal pull-up resistors on various pins for stable operation
Applications
The TDA8034HN/C1,151 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 applications (e.g., health insurance cards)
- Secure data storage and encryption devices
Q & A
- What is the TDA8034HN/C1,151 used for?
The TDA8034HN/C1,151 is used as an analog interface for asynchronous and synchronous smart cards. - What are the supported voltage levels for the TDA8034HN/C1,151?
The TDA8034HN/C1,151 supports 5 V, 3 V, and 1.8 V smart card supply voltages. - What is the package type of the TDA8034HN/C1,151?
The TDA8034HN/C1,151 comes in an HVQFN24 (4x4) package. - Does the TDA8034HN/C1,151 have low power consumption?
Yes, the TDA8034HN/C1,151 has very low power consumption in Deep Shutdown mode. - What kind of I/O lines does the TDA8034HN/C1,151 provide?
The TDA8034HN/C1,151 provides three protected half-duplex bidirectional buffered I/O lines (C4, C7, and C8). - How does the VCC regulation work on the TDA8034HN/C1,151?
VCC regulation is achieved using two low ESR multilayer ceramic capacitors: 220 nF and 470 nF. - What is the debouncing feature in the TDA8034HN/C1,151?
The debouncing feature has a typical duration of 8 ms for card presence detection. - Are there internal pull-up resistors on the TDA8034HN/C1,151?
Yes, the TDA8034HN/C1,151 has internal pull-up resistors on various pins. - What are some common applications of the TDA8034HN/C1,151?
Common applications include payment systems, identification and authentication systems, public transportation systems, and healthcare applications. - How does the automatic deactivation sequence work on the TDA8034HN/C1,151?
The automatic deactivation sequence involves steps such as pulling the RST pin LOW, stopping the clock, pulling I/O lines LOW, and reducing VCC to 0 V, followed by setting all card contacts to low-impedance to GND.
