Overview
The TDA8034HN/C2EL, produced by NXP USA Inc., is a cost-effective analog interface designed for both asynchronous and synchronous smart cards. This component operates at multiple voltage levels, including 5 V, 3 V, and 1.8 V, making it versatile for various smart card applications. It integrates all necessary supply, protection, and control functions between the smart card and the microcontroller, requiring only a few external components.
Key Specifications
| Parameter | Value | Notes |
|---|---|---|
| Package | 24-HVQFN (4x4) | Exposed Pad, Surface Mount |
| Voltage - Supply | 1.8 V, 3 V, 5 V | ±5% tolerance |
| Current Consumption | Active Mode: - 5 V: ICC < 65 mA - 3 V: ICC < 65 mA - 1.8 V: ICC < 35 mA | |
| Current Spikes | Up to 20 MHz: - 5 V and 3 V: 40 nA/s - 1.8 V: 15 nA/s | |
| Protection Features | Thermal and short-circuit protection for all card contacts, Enhanced ESD protection (> 8 kV) | |
| Clock Generation | Up to 20 MHz using pins CLKDIV1 and CLKDIV2 | Synchronous frequency changes of fxtal, 1⁄2 fxtal, 1⁄4 fxtal or 1⁄8 fxtal |
| Compatibility | ISO 7816, NDS, and EMVCo4.3 payment systems |
Key Features
- Integrated circuit smart card interface in a 24-pin HVQFN package
- Support for 5 V, 3 V, or 1.8 V smart card supply with ±5% voltage regulation
- Very low power consumption in Deep Shutdown mode
- Three protected half-duplex bidirectional buffered I/O lines (C4, C7, and C8)
- Thermal and short-circuit protection for all card contacts
- Enhanced card-side ElectroStatic Discharge (ESD) protection of > 8 kV
- External clock input up to 26 MHz connected to pin XTAL1
- Automatic activation and deactivation sequences triggered by various events (short-circuit, card take-off, overheating, etc.)
- Built-in debouncing on card presence contacts (typically 8 ms)
- Multiplexed status signal using pin OFFN
Applications
The TDA8034HN/C2EL is designed for use in various smart card applications, including:
- Payment systems (e.g., EMVCo4.3 compliant)
- Secure identification and authentication systems
- Smart card readers and terminals
- Point-of-Sale (POS) devices
- ATMs and other financial transaction equipment
Q & A
- What are the supported voltage levels for the TDA8034HN/C2EL?
The TDA8034HN/C2EL supports 5 V, 3 V, and 1.8 V smart card supply voltages.
- What is the package type of the TDA8034HN/C2EL?
The component is packaged in a 24-pin HVQFN (4x4) exposed pad, surface mount package.
- What are the key protection features of the TDA8034HN/C2EL?
The component includes thermal and short-circuit protection for all card contacts and enhanced ESD protection of > 8 kV.
- How does the TDA8034HN/C2EL manage clock generation?
The component can generate a clock up to 20 MHz using pins CLKDIV1 and CLKDIV2 with synchronous frequency changes.
- Is the TDA8034HN/C2EL compatible with standard smart card protocols?
Yes, it is compatible with ISO 7816, NDS, and EMVCo4.3 payment systems.
- What is the power consumption in Deep Shutdown mode?
The component has very low power consumption in Deep Shutdown mode.
- How does the TDA8034HN/C2EL handle card presence detection?
The component includes built-in debouncing on card presence contacts, typically 8 ms.
- Can the TDA8034HN/C2EL be used in high-frequency applications?
Yes, it supports current spikes up to 20 MHz with controlled rise and fall times.
- What is the purpose of the multiplexed status signal?
The multiplexed status signal using pin OFFN provides status information about the smart card interface.
- How does the TDA8034HN/C2EL protect against voltage spikes during power on and off?
The component includes a supply supervisor to kill spikes during power on and off using a fixed threshold or an external resistor bridge.
