NXP Semiconductors TDA8007BHL/C4,118

Overview

TDA8007BHL/C4,118 from NXP Semiconductors is a dual smart card interface IC designed for secure, cost-effective ISO 7816-compliant readers. It supports T=0/T=1 protocols per EMV4.2 and ISO 7816, delivers dual VCC outputs (5 V/3 V/1.8 V), integrates a step-up converter (2.7–6 V input), and features dedicated clock generation up to 10 MHz for two cards - deployed in banking terminals and access control systems.

For engineers reviewing the TDA8007BHL/C4,118 datasheet, TDA8007BHL/C4,118 pinout, TDA8007BHL/C4,118 application, or TDA8007BHL/C4,118 equivalent, key selection considerations include non-multiplexed parallel bus operation, hardware-level ESD and short-circuit protection on card I/O lines, integrated 24-bit time-out counter for ATR/WWT timing, and support for synchronous card interfaces via C4/C8 contacts.

Technical Context

The TDA8007BHL/C4,118 implements a dedicated ISO UART with parallel access, FIFO buffering (1–8 characters), parity error detection with auto-retransmission, and programmable ETU-based timing for T=0 (11.8 ETU min inter-character delay) and T=1 (10.8 ETU). Its register-controlled sequencer manages independent activation/deactivation of two smart cards with separate PCR, UCR, and TOR registers per card.

It uses an internal step-up converter with configurable output modes (doubler/tripler/follower), supports crystal frequencies from 4–20 MHz, and provides hardware supervisor reset and power-on/power-off spike suppression. The device operates across −40 °C to +85 °C and draws ≤350 μA in power-down mode with cards inactive.

Key Specifications

Pinout & Package

Package: LQFP48 (SOT313-2), 7 × 7 × 1.4 mm body, 48-pin quad flat lead frame. Pinout validated per NXP datasheet Rev. 8 (2011), with ALE pin NC (not connected) confirming non-multiplexed-only configuration for TDA8007BHL/C4.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TDA8007BHL/C3,118, the TDA8007BHL/C4,118 removes ALE functionality to harden against ESD-induced mode switching, simplifying layout and firmware. Unlike SLB9670TT10, it provides native parallel bus control and dual independent card power rails - essential for EMV-certified reader hardware.

Availability

TDA8007BHL/C4,118 is available at Aetrix Electronics and suitable for EMV banking terminals, digital pay-TV conditional access modules, and physical access control readers requiring stable component supply, long-term lifecycle assurance, and automotive-grade reliability.

Supply support for TDA8007BHL/C4,118 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 identification markets, with core expertise in smart card, NFC, and trusted execution technologies.

The TDA8007BHL/C4,118 belongs to NXP's smart card interface product line, engineered specifically for high-integrity dual-card readers in payment, identity, and access control - emphasizing hardware-enforced security, protocol compliance, and minimal external component count.

FAQ

What is the key functional difference between TDA8007BHL/C4,118 and TDA8007BHL/C3,118?

The TDA8007BHL/C4,118 is configured exclusively for non-multiplexed parallel bus operation, with pin ALE permanently not connected (NC). In contrast, TDA8007BHL/C3,118 supports both multiplexed and non-multiplexed modes, where ALE controls mode selection. This makes the C4 variant more robust against ESD-induced mode corruption but incompatible with 80C51-style multiplexed buses. Both share identical register maps, timing, and card interface capabilities.

Does TDA8007BHL/C4,118 support synchronous smart cards?

Yes, the TDA8007BHL/C4,118 supports synchronous cards via dedicated auxiliary I/O pins: C41/C42 for ISO C4 contact and C81/C82 for ISO C8 contact on cards 1 and 2. These pins operate independently of the main I/O1/I/O2 lines and are controlled through the Power Control Register (PCR), enabling full synchronous protocol handling alongside standard T=0/T=1 asynchronous operation.

What are the valid crystal frequency ranges for TDA8007BHL/C4,118?

The TDA8007BHL/C4,118 accepts crystal frequencies from 4 MHz to 20 MHz on XTAL1/XTAL2 pins, as specified in Table 1 of the datasheet. External clock input (0–20 MHz) is also supported on XTAL1. Frequencies outside this range are not guaranteed to meet ISO 7816-3 timing specifications or internal clock derivation accuracy for card communication.

How does the TDA8007BHL/C4,118 handle card power sequencing during activation?

The TDA8007BHL/C4,118 implements a hardware-controlled activation sequence managed by its internal sequencer: it first ramps VCC1/VCC2 with controlled slew rate (0.05–0.22 V/μs), then enables CLK1/CLK2, and finally asserts RST1/RST2. This sequence is fully autonomous - triggered by writing to the Power Control Register (PCR) - eliminating timing-critical firmware delays and ensuring ISO 7816-3 compliance.

Can TDA8007BHL/C4,118 drive three smart cards simultaneously?

No, the TDA8007BHL/C4,118 natively supports two smart cards (card 1 and card 2) with full dedicated analog drivers, clock generators, and power supplies. A third card can be interfaced externally (e.g., using TDA8020 or TDA8004), sharing the same ISO UART, but requires additional external circuitry and is not managed by the TDA8007BHL/C4,118's sequencer or protection logic.