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NXP Semiconductors TDA8035HN/C2/S1EL
- Part No.:
- TDA8035HN/C2/S1EL
- Manufacturer:
- NXP Semiconductors
- Category:
- Specialized
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
TDA8035HN/C2/S1EL.pdf
- Description:
- IC INTFACE SPECIALIZED 32HVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,711
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Product details
Overview
TDA8035HN/C2/S1EL from NXP Semiconductors is a highly integrated, low-power smart card interface IC designed for ISO 7816-compliant contact readers. It delivers regulated 5 V / 3 V / 1.8 V card supply (±5 %), supports up to 20 MHz card clock generation, provides thermal/short-circuit protection on all card contacts, and achieves deep shutdown current as low as 0.1 µA - enabling power-efficient banking and pay-TV terminals.
For engineers reviewing the TDA8035HN/C2/S1EL datasheet, TDA8035HN/C2/S1EL pinout, TDA8035HN/C2/S1EL application, or TDA8035HN/C2/S1EL equivalent, this page details its HVQFN32 package integration, EMV 4.3 C2-version compliance, DC-DC converter operation modes, fault detection behavior, and smart card activation/deactivation timing sequences critical for secure reader design.
Technical Context
The TDA8035HN/C2/S1EL implements a dual-supply architecture: VDDP (2.7–5.5 V) powers the DC-DC converter and internal regulators, while VDD(INTF) (1.6–3.6 V) supplies the host interface logic. Its digital sequencer autonomously executes hardware-triggered activation and deactivation sequences with controlled VCC ramp-up/down, RST assertion, and CLK enable timing - all synchronized to internal oscillator states (low-frequency during standby, high-frequency during active sessions).
Card I/O buffering uses bidirectional half-duplex lines (I/O, AUX1, AUX2) with 10 kΩ pull-ups referenced to VCC, while host-side signals (I/OUC, AUX1UC, AUX2UC) reference VDD(INTF). Clock selection (fXTAL, fXTAL/2, fXTAL/4, fXTAL/8) is configured via CLKDIV1/CLKDIV2 with synchronous frequency transitions ensuring ≥45 % duty cycle and pulse integrity across changes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Output | 5 V / 3 V / 1.8 V ±5 %; supports EMV 4.3 C2-certified payment systems with filtered overload detection at ~125 mA |
| Deep Shutdown Current | 0.1 µA typical; enables ultra-low-power battery-backed or energy-harvesting smart card readers |
| Card Clock Frequency | Up to 20 MHz via crystal (XTAL1/XTAL2) or external clock input; programmable division by 1/2/4/8 |
| ESD Protection | >8 kV HBM on card-side pins (I/O, RST, VCC, AUX1, CLK, AUX2, PRESN); meets ISO 7816 robustness requirements |
| Supply Voltage Range | VDDP: 2.7–5.5 V; VDD(INTF): 1.6–3.6 V; allows flexible system-level power domain partitioning |
| Thermal Protection | Automatic deactivation on overheating; short-circuit detection on all card contacts with thermal foldback |
| Deactivation Time | 35–250 µs total sequence; ensures rapid card disconnection during fault events per EMV timing constraints |
Pinout & Package
HVQFN32 package: plastic thermal-enhanced very thin quad flat package, no leads, 32 terminals, body size 5 × 5 × 0.85 mm (SOT617-7).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| I/OUC (Pin 1) | Host data I/O line | Interface-side bidirectional signal with 10 kΩ internal pull-up to VDD(INTF); decouples host logic voltage from card voltage domain |
| CMDVCCN (Pin 3) | Activation command input | Active-low hardware trigger initiating full card power-up sequence including VCC ramp, CLK enable, and RST assertion |
| EN_5V/3VN (Pin 7) | VCC selection control | Logic HIGH selects 5 V output; LOW selects 3 V (when EN_1.8VN = HIGH); enables dynamic voltage switching per card type |
| EN_1.8VN (Pin 8) | VCC selection control | Active-low signal selecting 1.8 V VCC output; used in conjunction with EN_5V/3VN for three-voltage support |
| OFFN (Pin 10) | Fault interrupt output | Open-drain NMOS output (10 kΩ pull-up to VDD(INTF)) signaling short-circuit, card removal, or supply drop during active session |
| VCC (Pin 22) | Smart card supply output | Regulated, current-limited (65 mA @ 5 V/3 V, 35 mA @ 1.8 V) output decoupled with two 220 nF MLCCs (ESR < 100 mΩ) |
| RST (Pin 23) | Card reset output | Active-high reset signal driven to card C2 contact; asserted synchronously after VCC stabilization during activation |
| CLK (Pin 24) | Card clock output | 50 % duty-cycle clock (45–55 % guaranteed) delivered to C3 contact; frequency set by CLKDIV1/CLKDIV2 configuration |
| PRESN (Pin 30) | Card presence input | Active-low mechanical switch sense with built-in 4.05 ms debounce; triggers automatic deactivation on true-to-false transition |
Key Features
| Feature | Design Value |
|---|---|
| EMV 4.3 C2 Compliance | Validated for payment terminal use with certified secure activation/deactivation sequences and fault response timing |
| Triple-Voltage Card Supply | Single IC supports 5 V, 3 V, and 1.8 V smart cards without external LDOs or voltage translators |
| Hardware-Automated Sequencing | Eliminates firmware overhead: activation/deactivation executed entirely in hardware upon CMDVCCN edge |
| Integrated DC-DC Converter | Configurable voltage tripler/doubler/follower topology adapts to VDDP and target VCC, reducing external component count |
| Card-Side ESD Robustness | >8 kV HBM protection on all card-contact pins meets stringent ISO 7816-3 mechanical stress requirements |
Applications
| Pay TV Conditional Access | EMV Payment Terminals |
|---|---|
Use Scenario: Integrated into set-top box CAM modules to interface with conditional access smart cards. IC Role / Device Role / Timing Role: Provides secure, low-power card activation, clock generation, and fault-monitored VCC delivery per ISO 7816-3. Use Value: Enables <1 µA standby current and sub-250 µs deactivation - meeting STB power budget and channel-switch latency targets. | Use Scenario: Embedded in point-of-sale (POS) terminals for chip-and-PIN transaction processing. IC Role / Device Role / Timing Role: Delivers EMV 4.3 C2-compliant card power sequencing, ESD-hardened I/O, and real-time fault signaling via OFFN. Use Value: Guarantees <5 V ±5 % VCC regulation and >125 mA overload detection - satisfying EMV Level 1 electrical certification. |
| Banking Card Readers | Government ID Systems |
Use Scenario: Used in desktop and portable banking readers for chip-based debit/credit card authentication. IC Role / Device Role / Timing Role: Manages multi-voltage card support (5 V/3 V/1.8 V), card presence debouncing, and thermal-safe I/O buffering. Use Value: Reduces BOM count by integrating DC-DC converter and supervisor functions - lowering cost and PCB area vs. discrete solutions. | Use Scenario: Deployed in national eID card readers for citizen identification and digital signature verification. IC Role / Device Role / Timing Role: Supplies secure, supervised VCC and performs automatic deactivation on card removal to prevent side-channel leakage. Use Value: Achieves 0.1 µA deep shutdown current and hardware-enforced fault isolation - meeting eIDAS security assurance level EAL4+ requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar smart card interface applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SLB9670 | Trusted Platform Module (TPM) with integrated smart card controller; requires external VCC regulation and lacks HVQFN32 footprint | Targets PC/platform security; not optimized for standalone reader designs or EMV 4.3 C2 compliance | Select TDA8035HN/C2/S1EL for dedicated, low-cost, EMV-certified contact reader implementations |
| TDA8024HN | Legacy predecessor; lacks 1.8 V support, higher standby current (1 µA vs. 0.1 µA), no EMV 4.3 C2 validation | Suitable only for legacy 5 V/3 V-only systems; cannot replace TDA8035HN/C2/S1EL in new EMV 4.3 designs | Choose TDA8035HN/C2/S1EL for new designs requiring 1.8 V support, lower power, and updated certification |
Compared with SLB9670 and TDA8024HN, the TDA8035HN/C2/S1EL uniquely combines triple-voltage card supply, EMV 4.3 C2 compliance, and 0.1 µA deep shutdown - making it the only direct-fit solution for next-generation low-power, certified payment and ID readers.
Availability
TDA8035HN/C2/S1EL is available at Aetrix Electronics and suitable for pay TV conditional access modules, EMV payment terminals, and government eID card readers requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TDA8035HN/C2/S1EL 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 TDA8035HN/C2/S1EL belongs to NXP's smart card interface product line, engineered specifically for ISO 7816-compliant contact readers in payment, identification, and conditional access systems - emphasizing security, low power, and EMV certification readiness.
FAQ
What is the primary function of the TDA8035HN/C2/S1EL in a smart card reader system?
The TDA8035HN/C2/S1EL serves as a fully integrated smart card interface IC that manages power delivery (5 V/3 V/1.8 V), clock generation (up to 20 MHz), reset signaling, and bidirectional data transfer between host controller and ISO 7816-compliant contact cards. It executes autonomous activation/deactivation sequences and provides hardware-level fault detection - eliminating firmware dependency for core card interface operations. The TDA8035HN/C2/S1EL is specifically validated for EMV 4.3 C2 payment systems.
How does the TDA8035HN/C2/S1EL support EMV 4.3 compliance?
The TDA8035HN/C2/S1EL supports EMV 4.3 compliance through its C2 version certification, which guarantees adherence to strict electrical and timing requirements: ±5 % VCC regulation, controlled VCC ramp rates, sub-250 µs deactivation time, >8 kV card-side ESD protection, and hardware-enforced fault responses (e.g., immediate OFFN assertion on short-circuit). These features are verified per EMVCo test plans and documented in NXP's official certification reports for the TDA8035HN/C2/S1EL.
What are the key differences between the TDA8035HN/C2/S1EL and the older TDA8024HN?
The TDA8035HN/C2/S1EL improves upon the TDA8024HN with 1.8 V card support, 10× lower deep shutdown current (0.1 µA vs. 1 µA), enhanced ESD protection (>8 kV vs. unspecified), and formal EMV 4.3 C2 certification. It also adds configurable DC-DC converter topology (tripler/doubler/follower), synchronous clock division, and improved thermal/short-circuit protection logic. The TDA8035HN/C2/S1EL maintains software compatibility but requires updated hardware layout for HVQFN32 packaging.
Can the TDA8035HN/C2/S1EL operate with different host interface voltages than the smart card voltage?
Yes, the TDA8035HN/C2/S1EL supports independent voltage domains: VDD(INTF) (1.6–3.6 V) powers the host-side interface (I/OUC, AUX1UC, etc.), while VCC (5 V/3 V/1.8 V) powers the card. This allows interfacing with 1.8 V or 3.3 V microcontrollers while supplying 5 V to legacy cards - eliminating level shifters. The internal 10 kΩ pull-ups on I/OUC/AUX1UC/AUX2UC reference VDD(INTF), ensuring correct logic thresholds regardless of VCC value.
What is the role of the OFFN pin on the TDA8035HN/C2/S1EL and how is it used in fault handling?
The OFFN pin on the TDA8035HN/C2/S1EL is an open-drain NMOS interrupt output (with 10 kΩ internal pull-up to VDD(INTF)) that asserts LOW during fault conditions: short-circuit on VCC, card removal, VDDP/VDD(INTF)/VREG undervoltage, or overheating. During active sessions (CMDVCCN = LOW), OFFN immediately signals faults to the host, triggering emergency deactivation. In standby, OFFN reflects card presence status. This enables real-time, hardware-driven fault response without polling - critical for EMV transaction integrity.
TDA8035HN/C2/S1EL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 32-VFQFN Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- Applications:
- -
- Interface:
- Analog
- Voltage - Supply:
- 2.7V ~ 5.5V
- Supplier Device Package:
- 32-HVQFN (5x5)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
TDA8035HN/C2/S1EL FAQ
1.How can I place an order for TDA8035HN/C2/S1EL through Aetrix?
Please submit a Request for Quotation (RFQ) for TDA8035HN/C2/S1EL 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 TDA8035HN/C2/S1EL reliable?
The price and inventory of TDA8035HN/C2/S1EL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TDA8035HN/C2/S1EL is usually 5 days.
3.What payment methods are accepted for TDA8035HN/C2/S1EL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TDA8035HN/C2/S1EL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TDA8035HN/C2/S1EL?
TDA8035HN/C2/S1EL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TDA8035HN/C2/S1EL 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 TDA8035HN/C2/S1EL?
For technical support, including TDA8035HN/C2/S1EL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TDA8035HN/C2/S1EL requirements.
6.How does Aetrix verify that TDA8035HN/C2/S1EL is sourced from the original manufacturer or authorized distributors?
All TDA8035HN/C2/S1EL 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 TDA8035HN/C2/S1EL meets industry standards.
7.What is the process for return or replacement of TDA8035HN/C2/S1EL?
All TDA8035HN/C2/S1EL units undergo pre-shipment inspection (PSI). If there is an issue with TDA8035HN/C2/S1EL, 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 TDA8035HN/C2/S1EL part is unused and in its original packaging.
Return procedure for TDA8035HN/C2/S1EL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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