Overview
The TDA8034HN/C1,157, produced by NXP USA Inc., is a specialized integrated circuit designed as an analog interface for asynchronous and synchronous smart cards. It operates at various voltage levels including 5 V, 3 V, and 1.8 V, making it versatile for different smart card applications. This IC is known for its low power consumption and comprehensive protection features, ensuring reliable and secure smart card interactions.
Key Specifications
| Parameter | Description |
|---|---|
| Package | 24-VFQFN Exposed Pad |
| Supply Voltage | 5 V, 3 V, 1.8 V |
| External Clock Input | Up to 26 MHz |
| Card Clock Generation | Up to 20 MHz (fxtal, 1⁄2 fxtal, 1⁄4 fxtal, 1⁄8 fxtal) |
| ESD Protection | > 8 kV |
| Thermal and Short-Circuit Protection | For all card contacts |
| Debouncing Feature | Typical duration of 8 ms |
| Compatibility | ISO 7816, NDS, EMVCo 4.3 payment systems |
Key Features
- Automatic activation and deactivation sequences triggered by short-circuit, card take-off, overheating, or falling VDD.
- Enhanced card-side ElectroStatic Discharge (ESD) protection of > 8 kV.
- External clock input up to 26 MHz and card clock generation up to 20 MHz with synchronous frequency changes.
- Non-inverted control of pin RST using pin RSTIN.
- Built-in debouncing on card presence contacts.
- Multiplexed status signal using pin OFFN.
- Supply supervisor for killing spikes during power on and off.
Applications
The TDA8034HN/C1,157 is primarily used in smart card readers and interfaces, particularly in applications that require secure and reliable communication with smart cards. This includes payment systems, identity verification systems, and other secure data exchange environments that adhere to ISO 7816, NDS, and EMVCo 4.3 standards.
Q & A
- What is the TDA8034HN/C1,157 used for? The TDA8034HN/C1,157 is used as an analog interface for asynchronous and synchronous smart cards.
- What are the operating voltage levels of the TDA8034HN/C1,157? It operates at 5 V, 3 V, and 1.8 V.
- What is the maximum external clock input frequency for the TDA8034HN/C1,157? The maximum external clock input frequency is up to 26 MHz.
- Does the TDA8034HN/C1,157 have ESD protection? Yes, it has enhanced card-side ESD protection of > 8 kV.
- What standards is the TDA8034HN/C1,157 compatible with? It is compatible with ISO 7816, NDS, and EMVCo 4.3 payment systems.
- What is the purpose of the debouncing feature in the TDA8034HN/C1,157? The debouncing feature corrects for the mechanical characteristics of the card presence switch, operating at a typical duration of 8 ms.
- How does the TDA8034HN/C1,157 handle thermal and short-circuit protection? It provides thermal and short-circuit protection for all card contacts.
- What is the package type of the TDA8034HN/C1,157? The package type is 24-VFQFN Exposed Pad.
- Does the TDA8034HN/C1,157 have a supply supervisor feature? Yes, it has a supply supervisor for killing spikes during power on and off.
- How does the automatic deactivation sequence work in the TDA8034HN/C1,157? The sequence involves pulling pin RST LOW, stopping the clock, pulling pins I/OUC, AUX1UC, and AUX2UC LOW, and finally deactivating VCC to its inactive state.
