TDA8034T/C1,118

Specialized Overview

The TDA8034T/C1,118 is a smart card interface IC manufactured by NXP Semiconductors. It provides analog interface functions for asynchronous and synchronous smart cards operating at 5 V or 3 V. The device operates within an ambient temperature range of -25 °C to +85 °C. Supply voltages include VDDP (4.85 V to 5.5 V), VDD (2.7 V to 3.6 V), and VDD(INTF) (1.6 V to VDD+0.3 V). Active mode supply current reaches up to 70 mA with a 65 mA load. Total power dissipation is limited to 0.25 W. The component is housed in an SO16 plastic small outline package.

Specialized Feature Summary

• Integrated circuit smart card interface in an SO16 package
• One protected half-duplex bidirectional buffered I/O line (C7)
• VCC regulation: 5V ± 5 % or 3 V ± 5 % using two low ESR multilayer ceramic capacitors: one of 220 nF and one of 470 nF
• Thermal and short-circuit protection for all card contacts
• Automatic activation and deactivation sequences triggered by a short-circuit, card take-off, overheating, falling V DD, VDD(INTF) or VDDP
• Enhanced card-side ElectroStatic Discharge (ESD) protection of > 6 kV
• External clock input up to 26 MHz connected to pin XTAL1
• Card clock generation up to 20 MHz using pin CLKDIV1 with synchronous frequency changes of: 1⁄2 fxtal or 1⁄4 fxtal on TDA8034T; fxtal or 1⁄2 fxtal on TDA8034AT
• Non-inverted control of pin RST using pin RSTIN
• Compatible with ISO 7816, NDS and EMV 4.2 payment systems
• Supply supervisor for killing spikes during power on and off: using a fixed threshold; using an external resistor bridge with threshold adjustment
• Built-in debouncing on card presence contacts (typically 4.5 ms)
• Multiplexed status signal using pin OFFN

Specialized Applications

• Pay TV
• Electronic payment
• Identification
• Bank card readers

Specialized Procurement Notes

Verify the specific ordering suffix /C1,118 against official documentation to confirm package type and compliance details. Confirm availability status as this component may be subject to end-of-life notices. Ensure compatibility with existing system voltage requirements before procurement.

Specialized Selection Notes

Select based on required smart card voltage (3 V or 5 V) and interface protocol compatibility. Consider thermal management capabilities given the 0.25 W power dissipation limit in the SO16 package. Verify clock source requirements, as the device supports both internal crystal oscillators and external clock inputs up to 26 MHz.

Specialized Part Context

The TDA8034T/C1,118 belongs to the TDA8034 family of smart card interfaces from NXP Semiconductors. This family includes variants like the TDA8034AT and TDA8034BT, which offer different clock division options. The component serves as a cost-effective analog interface solution for connecting smart cards to microcontrollers.

Specialized Replacement Considerations

Check for direct replacements within the TDA8034 family, such as the TDA8034AT/C1,118, which offers different clock division features. Evaluate alternative smart card interface ICs from other manufacturers if the TDA8034 series is discontinued.

Specialized FAQ

What are the supported smart card supply voltages?

The TDA8034T/C1,118 supports smart card supply voltages of 5 V or 3 V.

How is the card clock frequency determined?

The card clock frequency is set using pin CLKDIV1. For the TDA8034T variant, it can be 1/2 fxtal or 1/4 fxtal. For the TDA8034AT variant, it can be fxtal or 1/2 fxtal.

What protection features are included?

The device includes thermal and short-circuit protection for all card contacts, enhanced card-side ESD protection of > 6 kV, and supply supervisors for detecting power-on and power-off spikes.