NXP Semiconductors TDA8034HN/C1,118

Overview

TDA8034HN/C1,118 from NXP Semiconductors is a low-power analog smart card interface IC supporting ISO 7816-compliant 5 V, 3 V, and 1.8 V cards. It integrates VCC regulation, thermal/short-circuit protection, three buffered bidirectional I/O lines (C4, C7, C8), and programmable clock generation up to 20 MHz - enabling secure, standards-compliant card readers for payment terminals and identification systems.

For engineers reviewing the TDA8034HN/C1,118 datasheet, TDA8034HN/C1,118 pinout, TDA8034HN/C1,118 application, or TDA8034HN/C1,118 equivalent, this page delivers verified specifications, HVQFN24 package details, ISO 7816/NDS/EMVCo 4.3 compliance confirmation, deep shutdown current (12 µA), and precise VCC regulation tolerances (±5 %) required for robust smart card power sequencing and fault recovery design.

Technical Context

The TDA8034HN/C1,118 implements an integrated LDO-based VCC regulator with overload detection (~120 mA threshold) and filtered response to transient current spikes (40 nA/s at 5 V/3 V, 15 nA/s at 1.8 V). Its automatic activation/deactivation sequencer responds to short-circuit, card removal, overheating, or supply drop events via dedicated pins (CMDVCCN, PRESN, OFFN).

It supports dual clock sources - external input up to 26 MHz on XTAL1 or crystal oscillator (2–26 MHz) between XTAL1/XTAL2 - with synchronous frequency division (fxtal, ½fxtal, ¼fxtal, ⅛fxtal) controlled by CLKDIV1/CLKDIV2. Card-side ESD protection exceeds 8 kV HBM on I/O, RST, VCC, AUX1, AUX2, and CLK pins.

Key Specifications

Pinout & Package

Package: HVQFN24 (SOT616-1), 4 mm × 4 mm × 0.85 mm, thermally enhanced, no leads, 24-terminal surface-mount package.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar smart card interface applications.

Compared with SLB9670 and TDA8029HN, the TDA8034HN/C1,118 uniquely combines triple-voltage support, sub-12 µA deep shutdown, integrated ESD protection, and EMVCo 4.3 compliance - making it the only direct-fit solution for new-generation portable, low-power, multi-standard smart card readers.

Availability

TDA8034HN/C1,118 is available at Aetrix Electronics and suitable for Pay TV conditional access modules, EMV payment terminals, and government ID readers requiring stable component supply, long-term lifecycle assurance, and certified EMVCo 4.3 compliance.

Supply support for TDA8034HN/C1,118 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

NXP Semiconductors is a global semiconductor leader specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with deep expertise in smart card, NFC, and trusted execution technologies.

The TDA8034HN product line targets secure, low-power smart card readers for financial, identification, and conditional access markets - designed to simplify ISO 7816 hardware implementation while meeting EMVCo, NDS, and ICAO certification requirements.

FAQ

What voltage levels does the TDA8034HN/C1,118 support for smart card operation?

The TDA8034HN/C1,118 supports 5 V, 3 V, and 1.8 V smart cards via hardware-selectable VCC output. Voltage selection is controlled by VCC_SEL1 and VCC_SEL2 pins: VCC_SEL2 HIGH enables 5 V; VCC_SEL2 LOW enables 3 V; VCC_SEL1 LOW enables 1.8 V. The device maintains ±5 % regulation tolerance across all modes and delivers up to 65 mA at 5 V/3 V or 35 mA at 1.8 V, as specified in the TDA8034HN/C1,118 datasheet.

How does the TDA8034HN/C1,118 handle card insertion and removal events?

The TDA8034HN/C1,118 uses the PRESN pin for card presence detection with built-in 8 ms debounce to suppress mechanical switch bounce. On insertion, OFFN goes HIGH after debounce; on removal, it triggers an automatic emergency deactivation sequence - pulling RST LOW, stopping CLK, and ramping down VCC within defined timing (tdeact = 35–250 µs). This behavior is fully autonomous and requires no host intervention, ensuring safe card handling in the TDA8034HN/C1,118.

Does the TDA8034HN/C1,118 support external clock sources, and how is clock selection managed?

Yes, the TDA8034HN/C1,118 supports both external clock input (up to 26 MHz on XTAL1) and crystal oscillator (2–26 MHz between XTAL1/XTAL2). Clock source is auto-detected on each CMDVCCN falling edge - no dedicated select pin is needed. Clock frequency on CLK is programmable via CLKDIV1/CLKDIV2 to fxtal, ½fxtal, ¼fxtal, or ⅛fxtal, with synchronous transitions preserving duty cycle (45–55 %) and minimum pulse width integrity - a key capability of the TDA8034HN/C1,118.

What level of ESD protection does the TDA8034HN/C1,118 provide on card-facing pins?

The TDA8034HN/C1,118 provides enhanced card-side ESD protection exceeding 8 kV per Human Body Model (HBM) on all card-facing pins: I/O, RST, VCC, AUX1, AUX2, and CLK. This is confirmed in the official NXP datasheet (Rev. 3.5, March 2020) and enables robust operation in uncontrolled environments such as public payment terminals and portable ID readers - a critical reliability feature of the TDA8034HN/C1,118.

Is the TDA8034HN/C1,118 compliant with EMVCo 4.3, and what does that mean for payment terminal design?

Yes, the TDA8034HN/C1,118 is explicitly stated in the NXP ordering information as the C1 version compliant with EMVCo 4.3. This means its electrical behavior - including VCC regulation accuracy, clock jitter, reset timing, fault detection latency, and ESD robustness - has been validated against EMVCo's 4.3 specification for payment systems. Designers can use the TDA8034HN/C1,118 in certified terminals without additional qualification testing for the analog interface layer.