TDA8004T - NXP

TDA8004T IC card interface

The TDA8004T is a complete low cost analog interface for asynchronous smart cards. It can be placed betw the card and the microcontroller with very few external components to perform all supply protection and control functions. ORDERING INFORMATION TYPE NUMBER TDA8004T PACKAGE NAME SO28 DESCRIPTION plastic small outline package; 28 leads; body width 7.5 mm .

Features

• 3 or 5 V supply for the IC (GND and VDD)
• Step-up converter for VCC generation (separately powered with a 5 V ±10% supply, VDDP and PGND)
• 3 specific protected half duplex bidirectional buffered I/O lines (C4, C7 and C8)
• VCC regulation 5 V ±5% on 2 × 100 nF or 1 × 100 nF and 1 × 220 nF multilayer ceramic capacitors with low ESR, ICC < 65 mA at 4.5 V < VDDP < 6.5 V, current spikes of 40 nAs up to 20 MHz, with controlled rise and fall times, filtered overload detection approximately 90 mA)
• Thermal and short-circuit protections on all card contacts
• Automatic activation and deactivation .