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NXP Semiconductors TDA8026ET/C2,551
- Part No.:
- TDA8026ET/C2,551
- Manufacturer:
- NXP Semiconductors
- Category:
- Specialized
- Package:
- 64-TFBGA
- Datasheet:
-
TDA8026ET/C2,551.pdf
- Description:
- IC INTERFACE SPECIALIZED 64TFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,132
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Product details
Overview
TDA8026ET/C2,551 from NXP Semiconductors is a smart card interface IC designed for multi-slot Point-of-Sale (POS) terminals. It supports up to two synchronous/asynchronous smart cards and four Security Access Modules (SAMs), delivers 5 V / 3 V / 1.8 V regulated VCC(n) outputs per slot with ±5 % accuracy, integrates I²C-bus control (100 kHz / 400 kHz), and features thermal/short-circuit protection on all card contacts.
For engineers reviewing the TDA8026ET/C2,551 datasheet, TDA8026ET/C2,551 pinout, TDA8026ET/C2,551 application, or TDA8026ET/C2,551 equivalent, this device is selected for EMV 4.3-compliant payment terminal designs requiring ISO 7816-3 interface integrity, low-power shutdown mode (25 µA), and five independent card slot power/control channels with presence detection and programmable clock division.
Technical Context
The TDA8026ET/C2,551 implements a dual-clock architecture: CLKIN1 drives card slot 1, while CLKIN2 serves slots 2–5. Its integrated DC-to-DC converter generates VCC(n) at 5 V, 3 V, or 1.8 V (±5 %) with current limiting (~100 mA) and supports AC current spikes up to 40 nAs at 20 MHz for 5 V cards. Each of the five card slots includes dedicated RST(n), CLK(n), I/O(n), VCC(n), and GNDC(n) terminals with ±15 mA buffered I/O drive and built-in debouncing (17.8 ms typical).
Power management includes three distinct modes: shutdown (25 µA), standby (300–450 µA), and active (210–260 mA max). Card activation/deactivation is fully automated via hardware sequencers triggered by short-circuit, card insertion/removal, or voltage dropout on VDD(INTF), VDD, or VUP - with IRQN signaling events exclusively from slot 1 in shutdown mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage (VDD) | 2.7 V to 5.5 V - powers analog core and DC-to-DC converter; enables direct connection to common POS rail voltages. |
| Interface Supply (VDD(INTF)) | 1.6 V to 3.6 V - powers I²C interface and microcontroller-side logic; decoupled from VDD for mixed-voltage system compatibility. |
| Card Supply Outputs | VCC(1)–VCC(5) at 5 V / 3 V / 1.8 V ±5 % - independently regulated per slot; supports EMV-compliant card voltage switching without external LDOs. |
| I²C Bus Speed | Standard (100 kHz) or Fast mode (400 kHz) - enables real-time register access and configuration updates during live card transactions. |
| Card Clock Generation | Up to 20 MHz, divisible by 1/2/4/5 - provides precise clocking for high-speed asynchronous cards and low-power 1–2.2 MHz modes for reduced ICC. |
| ESD Protection (Card Side) | 6 kV HBM - meets IEC 61000-4-2 Level 4 requirements for ruggedized payment terminal front-end interfaces. |
| Shutdown Current | 25 µA typical - maintains card presence monitoring on slot 1 only; enables ultra-low-power idle states between transactions. |
Pinout & Package
Package: TFBGA64 (SOT1073-1), 5 mm × 5 mm, 0.5 mm pitch, top-side marking "TDA8026ET/C2".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IRQN (E2) | Microcontroller interrupt output | Active-low open-drain signal indicating card insertion/removal on slot 1 or fault conditions; requires external pull-up to VDD(INTF). |
| SDWNN (A5) | Shutdown and reset input | Active-low control enabling ultra-low-power mode; deactivates all card slots except slot 1 presence detection. |
| SCL (B2), SDA (C2) | I²C bus interface | Serial clock and bidirectional data lines referenced to VDD(INTF); support standard/fast mode with internal pull-ups. |
| VCC(1)–VCC(5) (G3, G5, E8, D8, B5) | Card supply outputs | Five independent regulated outputs delivering 5 V / 3 V / 1.8 V ±5 % to respective smart card slots with current limiting (~100 mA). |
| RST(1)–RST(5) (G2, G6, F6, D6, B6) | Card reset outputs | Buffered, current-limited (20 mA) reset signals per slot; programmable timing via embedded pulse counter or register control. |
| CLK(1)–CLK(5) (F2, G7, E6, C6, B7) | Card clock outputs | Programmable-frequency clocks (up to 20 MHz) with slew-rate control; support stop/HIGH/LOW states and low-power frequency division. |
| I/O(1)–I/O(5) (E3, F7, E7, D7, C7) | Card I/O buffers | Half-duplex, bidirectional, protected I/O lines with ±15 mA drive and 1 MHz bandwidth; include current limiting and ESD hardening. |
| PRES(1), PRES(2) (H2, F8) | Card presence inputs | Dedicated digital inputs with 17.8 ms built-in debouncing for mechanical switch noise rejection on primary card slots. |
Key Features
| Feature | Design Value |
|---|---|
| I²C-controlled multi-slot interface | Single I²C slave (A0-selectable address) manages five card slots with banked register access - reduces MCU GPIO count and firmware complexity. |
| Integrated DC-to-DC converter | Generates all five VCC(n) rails from single VDD input; supports full load (55 mA × 2) on two slots + reduced mode (2 mA × 3) on others - eliminates need for external DC/DC controllers. |
| Hardware-automated card sequencing | On-chip sequencers handle activation/deactivation, short-circuit recovery, and voltage-drop response without MCU intervention - ensures ISO 7816-3 compliance and robust field operation. |
| EMV 4.3 and ISO 7816-3 compliance | Meets full electrical and protocol requirements for payment terminals including VCC regulation tolerance, current spike handling, and clock stability - accelerates certification. |
| Slot-specific clock and power control | Independent CLK(n) frequency division, VCC(n) voltage selection, and RST(n) timing per slot - enables mixed-card-type operation (e.g., 5 V magstripe + 1.8 V contactless) in one terminal. |
Applications
| POS Terminal Core Interface | Multi-SAM Reader Module |
|---|---|
Use Scenario: Embedded controller in countertop or portable payment terminals managing simultaneous contact-based card reads and cryptographic operations. IC Role / Device Role / Timing Role: Central smart card interface IC coordinating up to two active cards and four SAMs; provides synchronized clocking, isolated power, and fault-resilient I/O buffering. Use Value: Enables single-chip support for EMV transaction flows with automatic card hot-plug handling, reducing BOM cost and PCB area versus discrete solutions. | Use Scenario: Secure module in banking kiosks or ATMs requiring multiple SAMs for key diversification and secure channel establishment. IC Role / Device Role / Timing Role: SAM interface hub delivering independent 3 V / 1.8 V supplies, isolated reset/clock/I/O per SAM, and I²C register access for key management commands. Use Value: Eliminates need for separate level-shifters and regulators per SAM; supports concurrent SAM authentication with deterministic timing control. |
| EMV-Certified Payment Gateway | Secure ID Verification Terminal |
Use Scenario: PCI PTS-approved gateway connecting to host processor and multiple card readers in unattended retail environments. IC Role / Device Role / Timing Role: Certified interface IC ensuring strict adherence to EMV 4.3 voltage tolerances, current limits, and transient response - validated for Level 3 security requirements. Use Value: Reduces certification effort by providing pre-validated analog behavior; supports fail-safe deactivation on overcurrent or thermal events. | Use Scenario: Government or enterprise identity verification station processing national ID cards, e-passports, and health insurance cards. IC Role / Device Role / Timing Role: Multi-standard interface supporting ISO 7816-3 compliant cards across 1.8 V, 3 V, and 5 V classes with dynamic voltage switching per slot. Use Value: Enables single-terminal support for legacy and next-gen ID cards without manual voltage configuration or hardware rework. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar smart card interface applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SLB9670TT20F | Trusted Platform Module (TPM) with integrated smart card controller; lacks multi-slot VCC generation and I/O buffering. | Designed for host-system root-of-trust, not front-end card interfacing; no direct replacement for TDA8026ET/C2,551's physical layer functions. | Select only when secure boot and cryptographic acceleration are primary needs - not for replacing card slot interface functionality. |
| TDA8029ET/C2 | Pin-compatible successor with enhanced ESD (8 kV), extended temperature range (−40 °C to +105 °C), and improved DC-to-DC efficiency. | Same functional scope and register map; certified for newer EMV versions and industrial-grade deployments. | Prefer for new designs requiring higher reliability margin or extended environmental operation; drop-in upgrade path exists. |
Compared with SLB9670TT20F, the TDA8026ET/C2,551 delivers dedicated analog smart card interface capabilities absent in TPMs; compared with TDA8029ET/C2, it offers proven field deployment in EMV 4.3 systems but with narrower temp range and lower ESD rating - making TDA8029ET/C2 the recommended long-term alternative.
Availability
TDA8026ET/C2,551 is available at Aetrix Electronics and suitable for Point-of-Sale terminals, EMV-certified payment gateways, and multi-SAM reader modules requiring stable component supply and long-term lifecycle support.
Supply support for TDA8026ET/C2,551 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 consumer applications.
The TDA8026ET/C2,551 belongs to NXP's smart card interface product line, engineered specifically for EMV-compliant payment terminals requiring robust, multi-slot analog interface capability with integrated power management and fault resilience.
FAQ
What is the primary function of the TDA8026ET/C2,551 in a payment terminal?
The TDA8026ET/C2,551 serves as the dedicated analog interface IC between the microcontroller and up to five smart card slots in EMV-compliant Point-of-Sale terminals. It provides regulated VCC(n) supplies (5 V / 3 V / 1.8 V), buffered I/O, programmable clock generation, reset control, and presence detection - all under I²C-bus command. Its design eliminates discrete regulators, level shifters, and protection components required for ISO 7816-3 compliance.
Does the TDA8026ET/C2,551 support both synchronous and asynchronous smart cards?
Yes, the TDA8026ET/C2,551 supports both synchronous and asynchronous smart cards across its five slots. Asynchronous cards use the embedded programmable clock pulse counter for RST(n) timing, while synchronous cards rely on register-controlled RST(n) generation. The IC's clock generation (up to 20 MHz, divisible by 1/2/4/5) and VCC(n) regulation (±5 %) meet ISO 7816-3 requirements for both card types.
How does the TDA8026ET/C2,551 manage power during card inactivity?
The TDA8026ET/C2,551 implements three power modes: shutdown (25 µA), standby (300–450 µA), and active (up to 260 mA). In shutdown mode, only slot 1 presence monitoring remains active. Programmable power reduction modes deactivate inactive slots, and clock-stop mode applies low-frequency clocks to non-communicating cards - all managed automatically by on-chip sequencers without MCU involvement.
What protection features does the TDA8026ET/C2,551 include for card contact reliability?
The TDA8026ET/C2,551 integrates thermal protection, short-circuit protection, and 6 kV HBM ESD protection on all card-side pins (I/O(n), RST(n), CLK(n), VCC(n)). It also features automatic activation/deactivation sequences triggered by short-circuit, card take-off, or voltage dropout on VDD(INTF), VDD, or VUP - ensuring safe recovery and preventing damage during hot-plug events or faulty card insertion.
Is the TDA8026ET/C2,551 compatible with EMV 4.3 payment systems?
Yes, the TDA8026ET/C2,551 is explicitly designed for EMV 4.3 compliance. It meets ISO 7816-3 electrical specifications including VCC(n) regulation tolerance (±5 %), controlled current spikes (40 nAs at 20 MHz for 5 V cards), rise/fall time management, and fault-handling sequences. The C2 version is qualified for EMV 4.3, while the C3 variant adds EMVC0 4.3 alignment - both share identical functionality and pinout.
TDA8026ET/C2,551 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 64-TFBGA
- Packaging:
- Tray
- Product Status:
- Obsolete
- Applications:
- -
- Interface:
- I2C
- Voltage - Supply:
- 2.7V ~ 5.5V
- Supplier Device Package:
- 64-TFBGA (7x7)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
TDA8026ET/C2,551 FAQ
1.How can I place an order for TDA8026ET/C2,551 through Aetrix?
Please submit a Request for Quotation (RFQ) for TDA8026ET/C2,551 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TDA8026ET/C2,551 reliable?
The price and inventory of TDA8026ET/C2,551 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TDA8026ET/C2,551 is usually 5 days.
3.What payment methods are accepted for TDA8026ET/C2,551?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TDA8026ET/C2,551 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TDA8026ET/C2,551?
TDA8026ET/C2,551 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TDA8026ET/C2,551 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TDA8026ET/C2,551?
For technical support, including TDA8026ET/C2,551 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TDA8026ET/C2,551 requirements.
6.How does Aetrix verify that TDA8026ET/C2,551 is sourced from the original manufacturer or authorized distributors?
All TDA8026ET/C2,551 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TDA8026ET/C2,551 meets industry standards.
7.What is the process for return or replacement of TDA8026ET/C2,551?
All TDA8026ET/C2,551 units undergo pre-shipment inspection (PSI). If there is an issue with TDA8026ET/C2,551, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TDA8026ET/C2,551 part is unused and in its original packaging.
Return procedure for TDA8026ET/C2,551:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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