ST8024LCTR

ST8024LCTR is a complete low-cost analog interface for asynchronous Class A, B, and C smartcards. It can be placed between the card and the microcontroller with a few external components to perform all supply protection and control functions. It has three specifically protected half-duplex bi-directional buffered I/O lines to card contacts C4, C7 and C8. It features 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 dropout. It also has a supply supervisor for spike-killing during power-on and power-off and power-on reset (threshold fixed internally or externally by a resistor divider). It is used in applications such as smart card readers for set-top boxes, IC card readers for banking, identification, pay TV.

• ISO 7816, GSM11.11 and EMV 4.2 (payment systems) compatible, IC card interface
• Thermal and short-circuit protection on all card contacts, 26MHz integrated crystal oscillator
• Built-in debounce on card presence contacts, one multiplexed status signal active-low OFF
• Non-inverted control of RST via pin RSTIN, supply voltage range from 2.7V to 6.5V
• Supply current is 1.2mA maximum at (card inactive)
• Total power dissipation is 0.56W max at (continuous operation, TA = -25°C to 85°C)
• Slew rate is 0.15V/µs typical at (slew up or down, VCC = 5V, 3V, 1.8V, ICC <lt/> 30mA)
• Ripple voltage on VCC (peak-to-peak value) is 350mV maximum at (fRIPPLE = 20KHz to 200MHz)
• Rise and fall time is 0.1µs maximum at (CL = 100pF), PORADJ function
• Operating temperature range from -25°C to 85°C, TSSOP-28 package