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NXP Semiconductors TDA8025HN/C1,518
- Part No.:
- TDA8025HN/C1,518
- Manufacturer:
- NXP Semiconductors
- Category:
- Specialized
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
TDA8025HN/C1,518.pdf
- Description:
- IC INTFACE SPECIALIZED 32HVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,941
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Product details
Overview
TDA8025HN/C1,518 from NXP Semiconductors is a cost-effective analog smart card interface IC supporting 3 V, 1.8 V, and optionally 1.2 V card supply voltages with ±5 % regulation accuracy, integrated thermal/short-circuit protection on all card contacts, and synchronous clock division (fXTAL, ½fXTAL, ¼fXTAL, ⅛fXTAL) up to 20 MHz - deployed in bank card readers and Pay TV conditional access modules.
For engineers reviewing the TDA8025HN/C1,518 datasheet, TDA8025HN/C1,518 pinout, TDA8025HN/C1,518 application, or TDA8025HN/C1,518 equivalent, this page delivers verified technical context, validated HVQFN32 package mapping, confirmed card-side ESD >6 kV, exact activation/deactivation timing (tdeact = 35–100 µs), and real-world smart card power sequencing behavior.
Technical Context
The TDA8025HN/C1,518 implements a dual-supply architecture: VDDI(REG) powers an internal regulator generating VDD(INTREGD) (3.0–3.6 V), while VDD(INTF) supplies microcontroller interface logic and is adjustable via external resistor bridge on PORADJ. Card supply VCC is actively regulated with ripple <350 mVp-p (20 kHz–200 MHz) and handles current pulses of 40 nAs (3 V), 15 nAs (1.8 V/1.2 V) at ≤20 MHz.
Its clock subsystem supports both internal oscillator and external crystal (≤26 MHz) inputs via XTAL1/XTAL2, with synchronous frequency division controlled by CLKDIV1/CLKDIV2 pins and precise RSTIN-triggered CLK start-up during activation. Built-in debouncing (4.5 ms typical) on PRES/PRESN ensures robust card presence detection independent of mechanical bounce.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Supply Options | 3 V, 1.8 V, or 1.2 V ±5 % - selectable via VCC_SEL1/VCC_SEL2; enables ISO/IEC 7816-3 compliance across voltage classes |
| Card Current Capability | 65 mA @ 3 V / 65 mA @ 1.8 V / 30 mA @ 1.2 V - sufficient for full-speed contact smart card operation including ATR transmission |
| ESD Protection | >6 kV HBM on card-side I/O (C4/C7/C8) - exceeds IEC 61000-4-2 Level 4 for field-reliable deployment |
| Deactivation Time | 35–100 µs total sequence - guarantees fast, deterministic card power removal after session end |
| Operating Temperature | −25 °C to +85 °C ambient - validated for industrial-grade embedded reader applications |
| Package | HVQFN32 (5 × 5 × 0.85 mm, SOT617-1) - thermally enhanced, leadless QFN enabling compact, high-density PCB layouts |
| Supply Supervision | Dual threshold monitoring: fixed 2.7 V on VDD(INTREGD), adjustable on VDD(INTF) via PORADJ - prevents spurious resets during brown-out |
Pinout & Package
HVQFN32 package (SOT617-1), 5 mm × 5 mm × 0.85 mm body, thermally enhanced exposed pad, no leads, 32 terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CMDVCCN (1) | Microcontroller activation trigger | Active LOW input initiating full card power-up sequence; synchronizes VCC ramp, CLK enable, and RST assertion |
| VCC (18) | Smart card supply output | Regulated 3 V / 1.8 V / 1.2 V output to C1 contact; requires 470 nF + 220 nF low-ESR ceramic decoupling to CGND |
| CLK (15) | Card clock output | ISO 7816 C3 output; synchronous frequency-divided (fXTAL, ½, ¼, ⅛) up to 20 MHz; duty cycle 45–55 % guaranteed |
| RST (17) | Card reset output | ISO 7816 C2 output; driven LOW during deactivation; mirrors RSTIN when active, enabling precise ATR timing control |
| I/O (11) | Card data I/O | ISO 7816 C7 bidirectional line; protected half-duplex transceiver with active pull-up (>1 mA to 0.9×VCC) and 15 mA current limit |
| OFFN (23) | Interrupt output | Open-drain NMOS interrupt to microcontroller; active LOW indicates card presence or fault condition (thermal/short-circuit) |
Key Features
| Feature | Design Value |
|---|---|
| Triple-voltage card supply regulation | Single IC supports 3 V, 1.8 V, and 1.2 V cards without external LDOs - reduces BOM count and layout complexity in multi-standard readers |
| Integrated card contact protection | Thermal shutdown + short-circuit limiting on all five card contacts (C1–C8) - eliminates need for discrete TVS/fuse networks |
| Synchronous clock division | Four selectable CLK frequencies (fXTAL, ½, ¼, ⅛) with glitch-free transitions - meets ISO 7816-3 timing requirements for all card classes |
| Automatic activation/deactivation | Fully sequenced hardware-controlled power-up/down (including VCC ramp, CLK start, RST timing) - removes firmware timing-critical code burden |
| Built-in card presence debouncing | 4.5 ms hardware timer on PRES/PRESN inputs - prevents false card detect events due to mechanical switch bounce |
Applications
| Bank Card Readers | Pay TV Conditional Access |
|---|---|
|
Use Scenario: EMV-compliant point-of-sale terminal reading chip-based debit/credit cards. IC Role / Device Role / Timing Role: Smart card interface managing VCC supply, CLK generation, RST control, and I/O buffering per ISO/IEC 7816-3. Use Value: Enables single-chip support for 3 V, 1.8 V, and 1.2 V cards - critical for global interoperability and future-proofing against evolving card voltage standards. |
Use Scenario: Set-top box module authenticating subscriber smart cards for encrypted content access. IC Role / Device Role / Timing Role: Secure card interface providing ESD-hardened communication, regulated VCC, and precise CLK/RST timing for ATR exchange. Use Value: >6 kV card-side ESD protection ensures field reliability in consumer environments with frequent card insertion/removal. |
| Electronic Payment Terminals | ID Authentication Systems |
|
Use Scenario: Portable payment kiosk verifying government-issued e-ID cards with digital signatures. IC Role / Device Role / Timing Role: Analog front-end translating microcontroller signals to ISO 7816 card contacts with thermal/short-circuit protection. Use Value: Automatic activation/deactivation sequence (35–100 µs) guarantees deterministic power cycling - essential for battery-powered devices. |
Use Scenario: Physical access control panel validating employee smart badges in enterprise facilities. IC Role / Device Role / Timing Role: Card interface handling secure authentication protocols requiring strict timing on CLK, RST, and I/O lines. Use Value: Synchronous clock division (fXTAL, ½, ¼, ⅛) allows dynamic frequency adaptation to match card-specific ATR 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 secure processor; no direct VCC regulation or ISO 7816 analog interface | Designed for host-system security attestation, not card-reader front-end interfacing | Select only if system-level trust anchor functionality is required instead of smart card physical layer interfacing |
| ST8025 | Pin-compatible replacement from STMicroelectronics; identical HVQFN32 footprint, same VCC regulation specs, but lacks NDS certification and has different PORADJ threshold calibration | Valid for non-NDS-certified readers where regulatory validation is not mandated | Use when NDS certification is not required and existing ST ecosystem design reuse is prioritized |
Compared with SLB9670 and ST8025, the TDA8025HN/C1,518 uniquely combines NDS certification, triple-voltage regulation with ±5 % accuracy, and hardware-sequenced activation/deactivation - making it the only choice for certified banking and Pay TV reader designs requiring full ISO 7816-3 compliance.
Availability
TDA8025HN/C1,518 is available at Aetrix Electronics and suitable for bank card readers, Pay TV conditional access modules, and electronic payment terminals requiring stable component supply, long-term lifecycle support, and certified smart card interface performance.
Supply support for TDA8025HN/C1,518 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, with core expertise in RFID, NFC, smart card, and automotive MCU technologies.
The TDA8025HN/C1,518 belongs to NXP's dedicated smart card interface product line, engineered specifically for ISO/IEC 7816-3 compliant contact reader systems in financial, broadcast, and identity markets.
FAQ
What voltage levels does the TDA8025HN/C1,518 support for smart card supply?
The TDA8025HN/C1,518 supports three regulated card supply voltages: 3 V, 1.8 V, and optionally 1.2 V - each with ±5 % accuracy over load and temperature. Selection is controlled by VCC_SEL1 and VCC_SEL2 pins, and the IC handles current pulses up to 40 nAs (3 V), 15 nAs (1.8 V/1.2 V) without deactivation. This enables full compatibility with legacy and next-generation ISO 7816 cards.
How does the TDA8025HN/C1,518 handle card presence detection and debouncing?
The TDA8025HN/C1,518 uses dual-input card presence sensing via PRES (active HIGH) and PRESN (active LOW) pins, with built-in 4.5 ms hardware debouncing to eliminate false triggers from mechanical switch bounce. When either signal asserts, the IC confirms card presence and initiates activation only after the debounce window expires - ensuring reliable detection without firmware intervention.
Can the TDA8025HN/C1,518 generate multiple clock frequencies for the smart card?
Yes, the TDA8025HN/C1,518 supports synchronous clock division using CLKDIV1 and CLKDIV2 pins to select fXTAL, ½fXTAL, ¼fXTAL, or ⅛fXTAL - all up to 20 MHz. The transition between frequencies is glitch-free and occurs after ≥10 XTAL1 periods, meeting ISO 7816-3 timing constraints for ATR negotiation and protocol switching.
What protection features does the TDA8025HN/C1,518 provide for smart card contacts?
The TDA8025HN/C1,518 integrates thermal shutdown and short-circuit protection on all card contacts (C1–C8), plus >6 kV HBM ESD protection on C4/C7/C8. It also includes overload current limiting (±135 mA threshold) with filtering to tolerate transient pulses up to 200 mA/200 ns - eliminating the need for external protection components in certified reader designs.
Is the TDA8025HN/C1,518 certified for use in banking and Pay TV applications?
Yes, the TDA8025HN/C1,518 is NDS certified - a mandatory requirement for Pay TV conditional access modules in Europe and other regulated markets. Its design complies with ISO/IEC 7816-3 for electrical characteristics and timing, and its triple-voltage regulation, ESD hardening, and automatic sequencing meet stringent banking and broadcast industry validation criteria.
TDA8025HN/C1,518 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 32-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Applications:
- -
- Interface:
- Analog
- Voltage - Supply:
- 1.2V, 1.8V, 3V
- Supplier Device Package:
- 32-HVQFN (5x5)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
TDA8025HN/C1,518 FAQ
1.How can I place an order for TDA8025HN/C1,518 through Aetrix?
Please submit a Request for Quotation (RFQ) for TDA8025HN/C1,518 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 TDA8025HN/C1,518 reliable?
The price and inventory of TDA8025HN/C1,518 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TDA8025HN/C1,518 is usually 5 days.
3.What payment methods are accepted for TDA8025HN/C1,518?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TDA8025HN/C1,518 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TDA8025HN/C1,518?
TDA8025HN/C1,518 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TDA8025HN/C1,518 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 TDA8025HN/C1,518?
For technical support, including TDA8025HN/C1,518 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TDA8025HN/C1,518 requirements.
6.How does Aetrix verify that TDA8025HN/C1,518 is sourced from the original manufacturer or authorized distributors?
All TDA8025HN/C1,518 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 TDA8025HN/C1,518 meets industry standards.
7.What is the process for return or replacement of TDA8025HN/C1,518?
All TDA8025HN/C1,518 units undergo pre-shipment inspection (PSI). If there is an issue with TDA8025HN/C1,518, 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 TDA8025HN/C1,518 part is unused and in its original packaging.
Return procedure for TDA8025HN/C1,518:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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