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24-pin smartcard interfaces

Quantity $ per Unit Savings
1 - 9$2.010%
10 - 24$1.8110%
25 - 99$1.7015%
100 - 249$1.4627%
250 - 499$1.3732%
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In stock
Parameter NameParameter Value
Supply Voltage Min Volt4.0
Supply Voltage Max Volt6.5
Operating Temp Min Celsius-25.0
Operating Temp Max Celsius85.0
Packing TypeTape And Reel
RoHs compliantEcopack3
Package NameHVQFN24 4x4x0-85

The ST8034HN and ST8034HC devices are complete low-cost analog interfaces for asynchronous and synchronous smartcards operating at a supply voltage of 5 V, 3 V or 1.8 V. The ST8034HN and ST8034HC devices can be placed between the card and the microcontroller to provide all supply, protection, detection and control functions, with just a few external components.

Key features
  • Complete smartcard interface
  • ISO 7816, NDS and EMV 4.3 payment systems compatible
  • Three protected half-duplex bidirectional buffered I/O lines to the smartcard
  • 5 V, 3 V or 1.8 V supply voltage for the smartcard (VCC), pin-selectable. Ensures controlled VCCrise and fall times and provides smart overload detection with glitch immunity.
  • Very low power consumption in deep shutdown mode
  • Chip select function allows the device interface to be isolated from the microcontroller signals - allows parallel combination of the card interface devices (ST8034HC)
  • Card clock generation by integrated crystal oscillator or from external clock source
  • Card clock frequency up to 20 MHz, programmable by CLKDIV1 and CLKDIV2 pins (ST8034HN) or by CLKDIV pin (ST8034HC), with synchronous frequency changes
  • Automatic activation and deactivation sequences initiated by the microcontroller
  • Emergency deactivation sequences initiated by a card supply short-circuit, card take-off, falling VDD, VDDP, or VDD(INTF)or by the interface device overheating
  • Voltage supply supervisors
    • with a fixed threshold (VDD, VDDP)
    • with an external resistor divider to set the VDD(INTF)threshold (PORADJ pin)
  • Multipurpose card status signalOFF
  • Non-inverted card reset pin RST driven by the RSTIN input
  • Thermal and short-circuit protection of all card contacts
  • Card presence detection contacts debounced
  • Enhanced card side ESD protection of 8 kV
  • Space saving QFN24 4 x 4 x 0.8 mm package
  • Temperature range -25 to +85 °C