Design Files
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Standard Smart Card Interface
The TDA8024 is a complete and cost-efficient analog interface for asynchronous 3 V or 5 V smart cards. It can be placed between the card and the microcontroller to perform all supply, protection and control functions. Very few external components are required. The TDA8024AT is a direct replacement for the TDA8004AT.
More information can be obtained from the NXP internet site (www.nxp.com) and from “Application note AN10141”.
Product Details
Features
- IC card interface
- 3 or 5 V supply for the IC (VDD and GND)
- Three specifically protected half-duplex bidirectional buffered I/O lines to card contacts C4, C7 and C8
- DC/DC converter for VCC generation separately powered from a 5 V +- 20 pct supply (VDDP and PGND)
- 3 or 5 V +- 5 pct regulated card supply voltage ((VCC) with appropriate decoupling has the following capabilities:
- ICC< 80 mA at VDDP = 4 to 6.5 V
- Handles current spikes of 40 nAs up to 20 MHz
- Controls rise and fall times
- Filtered overload detection at approximately 120 mA
- Thermal and short-circuit protection on all card contacts
- Automatic activation and deactivation sequences; initiated by software or by hardware in the event of a short-circuit, card take-off, overheating, VDD or VDDP drop-out
- Enhanced ESD protection on card side (>6 kV)
- 26 MHz integrated crystal oscillator
- Clock generation for cards up to 20 MHz (divided by 1, 2, 4 or 8 through CLKDIV1 and CLKDIV2 signals) with synchronous frequency changes
- Non-inverted control of RST via pin RSTIN
- ISO 7816, GSM11.11 and EMV (payment systems) compatibility
- Supply supervisor for spike-killing during power-on and power-off and Power-on reset (threshold fixed internally or externally by a resistor bridge); not for TDA8024AT
- Built-in debounce on card presence contacts
- One multiplexed status signal OFF.
Target Applications
- IC card readers for banking
- Electronic payment
- Identification
- Pay TV.
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Documentation
Quick reference to our documentation types.
1-5 of 11 documents
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Data Sheet
Standard smart card interface
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Application Note
Contact reader ICs - TDA product support packages
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Application Note
TDA8024 Smart Card Interface
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Application Note
Design migration from TDA8024 to TDA8035
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Package Information
plastic thin shrink small outline package; 28 leads; body width 4.4 mm
Design Resources
Engineering Services
To get further assistance directly from NXP, please see our Engineering Services.
4 engineering services
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Independent Design House (IDH)
Engineering Services and Consulting
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Independent Design House (IDH)
EMV & Payment Certification
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Independent Design House (IDH)
Readers & Wearables
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Independent Design House (IDH)
Software Integration
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