Analog Devices Inc./Maxim Integrated DS8113-RNG+T&R

Overview

The DS8113-RNG+T&R from Maxim Integrated is a smart card analog front-end IC designed to interface microcontrollers with ISO 7816/EMV/GSM11-11-compliant smart cards. It delivers programmable 1.8V/3V/5V card supply generation (up to 80mA at 5V), integrated ESD protection (8kV IEC), and ultra-low stop-mode current (<10nA), enabling secure, low-power payment terminals and access control readers.

For engineers reviewing the DS8113-RNG+T&R datasheet, DS8113-RNG+T&R pinout, DS8113-RNG+T&R application, or DS8113-RNG+T&R equivalent, key selection considerations include its triple-voltage card power generation, automatic activation/deactivation sequencer, ISO-compliant timing control, and dual-presence detection (PRES/PRES) for robust card insertion sensing.

Technical Context

The DS8113-RNG+T&R implements a dedicated internal sequencer for fully autonomous smart card activation and deactivation, eliminating host firmware overhead. Its clock generation supports external crystal (up to 20MHz) or clock input with selectable division (×1/2/4/8) via CLKDIV1/CLKDIV2 pins, meeting EMV Level 1 timing requirements.

It integrates three independent voltage regulators (5V ±5%, 3V ±8%, 1.8V ±10%), each with overcurrent and thermal fault detection, and employs bidirectional level-shifting transceivers on I/O, AUX1, AUX2 with 11kΩ internal pullups and 15mA current limiting-ensuring safe, compliant communication across all ISO 7816 voltage classes.

Key Specifications

Pinout & Package

DS8113-RNG+T&R is housed in a 28-pin SOIC package (SO/TSSOP-compatible footprint), with exposed pad not present. Pin functions are validated per Maxim's official DS8113 datasheet Rev 3 (19-5216).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX3232ESE+ and ST8024BTR, the DS8113-RNG+T&R uniquely integrates triple-voltage regulation, autonomous ISO-compliant sequencing, and sub-10nA stop mode in a single 28-pin SOIC - reducing BOM count by ≥7 components and enabling next-generation low-power, multi-standard smart card readers.

Availability

DS8113-RNG+T&R is available at Aetrix Electronics and suitable for banking payment terminals, access control readers, and ATM card interfaces requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for DS8113-RNG+T&R 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

Maxim Integrated (now part of Analog Devices) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and security applications.

The DS8113-RNG+T&R belongs to Maxim's secure transaction interface product line, engineered specifically for EMV-certifiable smart card readers demanding hardware-enforced safety, low power, and seamless ISO 7816 compliance.

FAQ

What voltage levels does the DS8113-RNG+T&R support for smart card operation?

The DS8113-RNG+T&R supports three smart card supply voltages: 5.0V ±5% (up to 80mA), 3.0V ±8% (up to 65mA), and 1.8V ±10% (up to 30mA). Selection is controlled by the 1_8V and 5V/3V pins per Table 3 in the DS8113-RNG+T&R datasheet, with 1_8V having priority over 5V/3V. This enables full compatibility with legacy and modern EMV cards.

How does the DS8113-RNG+T&R handle card insertion and removal detection?

The DS8113-RNG+T&R uses dual-presence inputs (PRES active-low and PRES active-high) with an integrated 8ms typical hardware debounce timer. When a card is inserted, the OFF pin asserts high after debounce; upon removal, it drives low and triggers automatic emergency deactivation. This eliminates software debouncing and prevents false triggers from mechanical switch bounce in the DS8113-RNG+T&R.

What is the purpose of the CMDVCC pin on the DS8113-RNG+T&R?

The CMDVCC pin on the DS8113-RNG+T&R is an active-low control input that initiates the hardware-managed smart card activation or deactivation sequence. Pulling CMDVCC low starts full autonomous power-up (VCC ramp, CLK enable, RST assert); setting it high triggers safe deactivation. This offloads timing-critical ISO 7816 sequencing from the host MCU in the DS8113-RNG+T&R.

Does the DS8113-RNG+T&R include built-in ESD protection, and what level is specified?

Yes, the DS8113-RNG+T&R provides ≥8kV ESD protection on all card-facing pins (I/O, CLK, RST, VCC, AUX1, AUX2) per IEC 61000-4-2. This is implemented internally and eliminates the need for external TVS diodes in the DS8113-RNG+T&R design, simplifying layout and improving system-level ESD robustness for payment terminal deployments.

What is the lowest power state achievable with the DS8113-RNG+T&R, and how is it entered?

The DS8113-RNG+T&R achieves ultra-low-power stop mode with typical current consumption below 10nA. It is entered by holding CMDVCC, 5V/3V, and 1_8V pins high simultaneously while the card interface is inactive. In this state, all analog circuits disable except PRES monitoring, and the OFF pin mirrors PRES status - enabling multi-year battery life in the DS8113-RNG+T&R.