Texas Instruments TCA5013ZAHR

Overview

TCA5013ZAHR from Texas Instruments is a smartcard interface IC designed for EMV 4.3 and ISO/IEC 7816-3/-10 compliant point-of-sale terminals. It provides full electrical and protocol-level support for one user card and three secure access module (SAM) cards, integrates DC-DC boost generation for 1.8 V/3 V/5 V card VCC, delivers programmable clock slew rate control (7–25 ns), and features IEC 61000-4-2 ±8 kV contact ESD protection on all card interface pins.

For engineers reviewing the TCA5013ZAHR datasheet, TCA5013ZAHR pinout, TCA5013ZAHR application, or TCA5013ZAHR equivalent, this device serves as a single-chip solution for multi-SAM POS systems requiring automatic card activation/deactivation, synchronous card ATR capture, fault-safe deactivation (short circuit, overtemperature, pull-out), and I²C-controlled power management with shutdown current as low as 22 µA.

Technical Context

The TCA5013ZAHR implements a dual-domain architecture: a 3.3 V microcontroller interface domain (VDDI) and a programmable card power domain (VDD). Its integrated DC-DC converter generates up to 180 mA total card supply current across four independent VCC outputs (VCCUC, VCCS1–S3), each configurable for 1.8 V, 3 V, or 5 V operation with <±3% regulation and 90 mV peak-to-peak ripple.

Card timing is managed via internal 1.2 MHz oscillator or external 26 MHz clock input (CLKIN1/CLKIN2), with fully programmable rise/fall times on CLK and IO lines (register-controlled 16-step slew rate), precise reset sequencing (tRST-HI = 60–80 µs), and automatic deactivation triggered by PRES detection, thermal shutdown (>125 °C), or supply faults (VDD < 2.0 V).

Key Specifications

Pinout & Package

The TCA5013ZAHR is housed in a 5.0 mm × 5.0 mm, 48-pin NFBGA (ZAH package) with bottom-side solder balls. The pin arrangement isolates sensitive card interface signals (e.g., IOUC, RSTUC, CLKS1–3) within a GND ring to prevent probing and enhance security.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX3232CSE+ and SLB9670, the TCA5013ZAHR uniquely integrates full ISO7816-3/-10 protocol handling, quad-card power management, and EMV-compliant timing control - making it irreplaceable for direct smartcard interfacing in certified payment terminals.

Availability

TCA5013ZAHR is available at Aetrix Electronics and suitable for high-reliability point-of-sale terminals, multi-SAM electronic payment systems, and government ID verification devices requiring stable component supply, long-term lifecycle support, and certified EMV interoperability.

Supply support for TCA5013ZAHR 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

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity technologies with over 50 years of innovation in industrial, automotive, and communications markets.

The TCA5013ZAHR belongs to TI's secure transaction interface product line, engineered specifically for EMV-certified payment infrastructure where robustness, standards compliance, and tamper resistance are non-negotiable design requirements.

FAQ

What standards does the TCA5013ZAHR support for smartcard communication?

The TCA5013ZAHR supports EMV 4.3, ISO/IEC 7816-3 (asynchronous), and ISO/IEC 7816-10 (synchronous) standards. It implements full protocol-level compliance including cold/warm reset sequences, clock stop capability, ATR capture in 4-byte FIFO, and precise timing windows (e.g., tRST-HI = 60–80 µs). These capabilities are verified in TI's production test flow and documented in the SCPS253C datasheet revision C.

How many smartcards can the TCA5013ZAHR interface with simultaneously?

The TCA5013ZAHR supports one user card and three secure access module (SAM) cards simultaneously - four independent smartcard interfaces total. Each interface has dedicated VCC, RST, CLK, and IO pins (e.g., VCCUC/RSTUC/CLKUC/IOUC for user card; VCCS1/RSTS1/CLKS1/IOS1 for SAM1), enabling true parallel operation without time-division multiplexing.

Does the TCA5013ZAHR generate its own clock signals for smartcards?

Yes, the TCA5013ZAHR generates clock signals for all four smartcard interfaces. It uses an internal 1.2 MHz oscillator (fOSC = 1.0–1.4 MHz) to derive CLKUC, CLKS1–3 outputs, or accepts external clocks up to 26 MHz on CLKIN1/CLKIN2. Clock frequency, duty cycle (45–55%), and slew rate (7–25 ns) are fully programmable per interface via I²C registers.

What is the purpose of the PRES pin on the TCA5013ZAHR?

The PRES pin on the TCA5013ZAHR is a user card presence detection input. When asserted high, it initiates automatic card activation including VCC ramp-up, reset assertion, clock enablement, and ATR capture. It features 20 ms hardware debounce (tDEB(P)) and triggers deactivation within 100 µs of removal (tDEB(D)), ensuring EMV-compliant behavior without host MCU polling.

Can the TCA5013ZAHR operate with different VCC voltages for each smartcard slot?

Yes, the TCA5013ZAHR supports independent VCC voltage selection per interface: VCCUC (user card), VCCS1 (SAM1), VCCS2 (SAM2), and VCCS3 (SAM3) can each be configured for 1.8 V, 3 V, or 5 V operation. This is achieved via internal LDOs with <±3% regulation and 250 mV dropout, allowing mixed-voltage card environments (e.g., 5 V debit card + 3 V eID + 1.8 V transit card) in a single terminal.