Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Integrated Circuits (ICs) > Interface > Specialized

Analog Devices Inc./Maxim Integrated DS8024-RRX+

Name: DS8024-RRX+
Brand: Analog Devices Inc./Maxim Integrated
SKU: DS8024-RRX+
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: DS8024-RRX+

Manufacturer:: Analog Devices Inc./Maxim Integrated

Category:: Specialized

Package:: 28-SOIC (0.295", 7.50mm Width)

Datasheet:: DS8024-RRX+.pdf

Description:: IC INTERFACE SPECIALIZED 28SOIC

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:1,393

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

DS8024-RRX+ from Maxim Integrated is a smart card interface IC serving as an analog front-end for ISO 7816, EMV®, and GSM11-11 compliant readers. It delivers 5.0V ±5% (80mA max) and 3.0V ±8% (65mA max) card supply voltages, supports flexible clock division (×1/2/4/8), and provides ±8kV IEC ESD protection on card interfaces. It is used in banking POS terminals and access control systems requiring robust, drop-in replacement capability.

For engineers reviewing the DS8024-RRX+ datasheet, DS8024-RRX+ pinout, DS8024-RRX+ application, or DS8024-RRX+ equivalent, key selection considerations include its 28-pin SO package, dual-voltage card support (3V/5V), integrated charge-pump voltage generation, automatic activation/deactivation sequencing, and compatibility with NXP TDA8024-based designs.

Technical Context

The DS8024-RRX+ integrates a charge-pump-based VCC generator supporting both 3V and 5V smart cards, with internal supervision ensuring controlled ramp-up (t₂ ≈ 1.5 × T) and deactivation timing (t_DEACT = 80μs). Its clock circuit accepts up to 20MHz crystal or external clock input and divides by 1, 2, 4, or 8 via dedicated CLKDIV1/CLKDIV2 pins.

It implements bidirectional level-shifting transceivers for I/O, AUX1, and AUX2 lines with 11kΩ internal pullups (to VCC/VDD), active pullup pulse (t_PU = 100ns), and current limiting (±15mA). Fault detection covers short-circuit, overheating (T_SD = +150°C), VDD dropout, and card removal-triggering emergency deactivation and OFF signal assertion.

Key Specifications

Parameter	Value and Actual Design Meaning
Digital Supply Voltage (VDD)	2.7V to 6.0V - enables direct interfacing with 3.3V host controllers while tolerating higher rail variations
Card Supply Voltage (VCC)	5.0V ±5% (80mA max) or 3.0V ±8% (65mA max) - selectable via 5V/3V pin; supports full ISO 7816 voltage classes
Clock Input Frequency	0–20MHz crystal or external clock - allows precise timing control for ATR and protocol compliance
ESD Protection (Card Interface)	±8kV per IEC 61000-4-2 - ensures reliability in unshielded card insertion environments
Activation/Deactivation Time	t_ACT = 160μs, t_DEACT = 80μs - guarantees deterministic session startup/shutdown aligned with EMV Level 1 timing windows
Operating Temperature Range	−40°C to +85°C - validated for industrial and commercial reader deployments including ATMs and POS terminals
Package	28-pin SO (300 mil) - RoHS-compliant, surface-mount compatible with standard reflow profiles

Pinout & Package

DS8024-RRX+ is housed in a 28-pin Small Outline (SO) package, 300 mil width, RoHS-compliant (denoted by "+" suffix). Pin spacing is 1.27mm, body width 7.62mm, and total length 17.9mm per Maxim's outline no. 21-0042.

Pin/Terminal	Circuit Role	Design Meaning
1, 2	CLKDIV1, CLKDIV2	Binary-selectable clock divider inputs - configure CLK output as f_XTAL/1, /2, /4, or /8 without software overhead
3	5V/3V	Voltage mode select - logic-high enables 5V card operation; logic-low enables 3V, directly controlling internal charge-pump configuration
4	PGND	Analog ground reference - isolated from digital GND to minimize noise coupling into sensitive card power and signal paths
5, 7	CP2, CP1	Charge-pump capacitor terminals - require 100nF low-ESR capacitor to generate boosted VCC from VDDA
6	VDDA	Charge-pump supply input - must be ≥ VDD and ≥3.3V; determines 1x/2x pump mode based on selected card voltage
8	VUP	Charge-pump output node - connects to 100nF capacitor to GND; supplies regulated VCC after internal regulation
9, 10	PRES, PRES	Active-low and active-high card presence inputs - dual-sense capability accommodates normally-open or normally-closed mechanical switches
11	I/O	Smart card data line (C7) - bidirectional, level-shifted, with internal 11kΩ pullup to VCC and ±15mA current limiting
12, 13	AUX2, AUX1	Auxiliary card contacts (C8, C4) - functionally identical to I/O; support extended ISO 7816 protocols and proprietary extensions
14	CGND	Smart card ground reference - separate from system GND to prevent ground-loop interference on card signals
15	CLK	Smart card clock (C3) - CMOS-level output with 45–55% duty cycle, <8ns rise/fall time, and 0.2V/ns slew rate
16	RST	Smart card reset (C2) - actively driven low during activation/deactivation; synchronized to CLK and VCC transitions
17	VCC	Programmable card supply output - decoupled with dual 100nF/220nF capacitors near DS8024 and socket for low-noise delivery
18	N.C.	No connection - internally unconnected; must remain floating or tied to GND per layout best practices
19	CMDVCC	Host-initiated activation trigger - active-low command that starts internal sequencer and voltage ramp
20	RSTIN	Host reset input - controls RST timing relative to CLK; used for alternate activation sequences per EMV timing requirements
21	VDD	Digital core supply - powers all host-facing logic and transceivers; must match host controller supply voltage
22	GND	Digital ground - reference for VDD, control pins, and host-side I/O; kept separate from PGND and CGND
23	OFF	Status interrupt output - active-low fault indicator (short-circuit, overtemp, card removal); includes 20kΩ internal pullup to VDD
24, 25	XTAL1, XTAL2	Crystal oscillator terminals - accept 20MHz fundamental-mode crystal or external clock; XTAL1 also accepts buffered clock input
26	I/OIN	Host-side I/O input - level-shifted counterpart to I/O; pulled up to VDD with 11kΩ resistor when inactive
27, 28	AUX1IN, AUX2IN	Host-side auxiliary inputs - mirror AUX1/AUX2 functionality; enable full bidirectional communication on C4/C8

Key Features

Feature	Design Value
Integrated 3V/5V card supply generator	Eliminates need for external LDOs or switching regulators; supports EMV-compliant voltage accuracy and transient response
Automatic activation/deactivation sequencer	Hardware-controlled timing (t_ACT, t_DEACT) ensures ISO 7816 and EMV Level 1 compliance without host firmware intervention
Dual-presence sensing (PRES/PRES)	Supports both NO and NC card-detect switches in same design, reducing BOM variants and mechanical dependency
8ms hardware debounce on PRES	Prevents false card-insertion/extraction events due to switch bounce, eliminating need for software debouncing
±8kV IEC ESD protection on card contacts	Meets EN 61000-4-2 Level 4 for contact discharge, enabling robust field deployment without external TVS diodes
Pin-for-pin compatibility with NXP TDA8024	Enables drop-in replacement in existing TDA8024 designs; PORADJ pin omission has no functional impact in most implementations

Applications

Banking POS Terminal	Access Control Reader
Use Scenario: Processes debit/credit card transactions at retail point-of-sale using EMV-compliant contact interface. IC Role / Device Role / Timing Role: Provides ISO 7816-compliant analog front-end: generates VCC, drives CLK/RST/I/O, manages activation sequence, and detects faults. Use Value: Guarantees EMV Level 1 timing compliance (t_ACT = 160μs, t_DEACT = 80μs) and ±8kV ESD robustness for high-volume, unattended card swipes.	Use Scenario: Authenticates employee smart cards at secure facility entry points with real-time card presence detection. IC Role / Device Role / Timing Role: Interfaces host MCU to contact-based credential card; handles card insertion/removal via dual PRES inputs and OFF interrupt. Use Value: 8ms hardware debounce eliminates false triggers from mechanical switch bounce; OFF signal alerts host of card removal or short-circuit event.
Automated Teller Machine (ATM)	Set-Top Box Conditional Access
Use Scenario: Enables secure PIN entry and financial transaction processing via inserted EMV chip card in outdoor kiosks. IC Role / Device Role / Timing Role: Delivers regulated 3V/5V VCC, level-shifted bidirectional I/O, and fault-protected CLK/RST signaling across wide temperature range. Use Value: −40°C to +85°C operation and integrated thermal shutdown (T_SD = +150°C) ensure reliability in uncontrolled ambient environments.	Use Scenario: Supports conditional access modules (CAMs) in pay-TV set-top boxes requiring ISO 7816-compliant smart card interface. IC Role / Device Role / Timing Role: Manages card power, clock, reset, and data exchange between CAM microcontroller and subscriber smart card. Use Value: Flexible clock division (×1/2/4/8) and programmable VCC allow interoperability with legacy and modern CAM standards.

Banking POS Terminal

Access Control Reader

Use Scenario: Processes debit/credit card transactions at retail point-of-sale using EMV-compliant contact interface.

IC Role / Device Role / Timing Role: Provides ISO 7816-compliant analog front-end: generates VCC, drives CLK/RST/I/O, manages activation sequence, and detects faults.

Use Value: Guarantees EMV Level 1 timing compliance (t_ACT = 160μs, t_DEACT = 80μs) and ±8kV ESD robustness for high-volume, unattended card swipes.

Use Scenario: Authenticates employee smart cards at secure facility entry points with real-time card presence detection.

IC Role / Device Role / Timing Role: Interfaces host MCU to contact-based credential card; handles card insertion/removal via dual PRES inputs and OFF interrupt.

Use Value: 8ms hardware debounce eliminates false triggers from mechanical switch bounce; OFF signal alerts host of card removal or short-circuit event.

Automated Teller Machine (ATM)

Set-Top Box Conditional Access

Use Scenario: Enables secure PIN entry and financial transaction processing via inserted EMV chip card in outdoor kiosks.

IC Role / Device Role / Timing Role: Delivers regulated 3V/5V VCC, level-shifted bidirectional I/O, and fault-protected CLK/RST signaling across wide temperature range.

Use Value: −40°C to +85°C operation and integrated thermal shutdown (T_SD = +150°C) ensure reliability in uncontrolled ambient environments.

Use Scenario: Supports conditional access modules (CAMs) in pay-TV set-top boxes requiring ISO 7816-compliant smart card interface.

IC Role / Device Role / Timing Role: Manages card power, clock, reset, and data exchange between CAM microcontroller and subscriber smart card.

Use Value: Flexible clock division (×1/2/4/8) and programmable VCC allow interoperability with legacy and modern CAM standards.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
NXP TDA8024	Pin-compatible but includes PORADJ pin for adjustable reset threshold; lacks DS8024's integrated 8ms PRES debounce	Requires external debounce circuitry for mechanical switches; used in legacy designs where PORADJ tuning is needed	Select TDA8024 only if PORADJ adjustment is required; otherwise DS8024-RRX+ offers superior integration and reduced BOM count
Maxim DS8113	Supports stop-mode low-power operation (not available in DS8024-RRX+); lower active current (35mA vs. 135mA for 3V cards)	Targeted at battery-powered or energy-sensitive readers; requires minor hardware changes (different pinout and VDDA handling)	Choose DS8113 for portable or ultra-low-power applications; DS8024-RRX+ remains optimal for mains-powered, cost-sensitive readers

Compared with NXP TDA8024, DS8024-RRX+ adds hardware debounce and removes PORADJ-reducing external components. Versus DS8113, it trades stop-mode power savings for pin compatibility and broader industrial temperature validation, making it ideal for fixed-location EMV readers.

Availability

DS8024-RRX+ is available at Aetrix Electronics and suitable for banking POS terminals, access control readers, and automated teller machines requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.

Supply support for DS8024-RRX+ 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 U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and consumer applications.

The DS8024 product line delivers fully integrated smart card interface solutions targeting EMV-compliant payment and identification systems, emphasizing pin compatibility, fault resilience, and minimal external component count.

FAQ

What is the operating temperature range for DS8024-RRX+?

The DS8024-RRX+ is specified and tested for continuous operation from −40°C to +85°C. This range is validated per Maxim's recommended DC operating conditions and supports deployment in industrial environments such as ATMs, outdoor kiosks, and commercial access control panels where ambient temperatures fluctuate widely. The device incorporates thermal shutdown at +150°C for additional protection.

Does DS8024-RRX+ support both 3V and 5V smart cards?

Yes, DS8024-RRX+ supports both 3V and 5V smart cards via the 5V/3V pin. When this pin is logic-high, the internal charge-pump generator delivers 5.0V ±5% (80mA max); when logic-low, it delivers 3.0V ±8% (65mA max). This dual-voltage capability ensures full ISO 7816 Class A (5V), B (3V), and C (1.8V - not supported) compliance without external voltage selection circuitry.

Is DS8024-RRX+ pin-compatible with NXP TDA8024?

Yes, DS8024-RRX+ is a pin-for-pin drop-in replacement for NXP TDA8024 in 28-pin SO and TSSOP packages. All signal names, pin positions, and electrical characteristics align, except DS8024-RRX+ omits the PORADJ pin. In most applications, this omission has no functional impact because DS8024 uses a fixed internal reset threshold (V_TH2 = 2.45V typ, hysteresis = 100mV).

What protection features does DS8024-RRX+ include?

DS8024-RRX+ integrates ±8kV IEC 61000-4-2 ESD protection on all card-facing pins (I/O, CLK, RST, VCC, CGND), short-circuit and overcurrent protection on VCC (trips at ~120mA), thermal shutdown at +150°C, and VDD undervoltage lockout with hysteresis. These protections trigger automatic deactivation and assert the OFF interrupt pin, enabling host-level fault recovery without manual intervention.

How does DS8024-RRX+ handle card presence detection?

DS8024-RRX+ provides dual card presence inputs (PRES active-low and PRES active-high) to interface with either normally-open or normally-closed mechanical switches. It includes built-in 8ms hardware debounce, eliminating software polling or external RC filters. Upon valid card insertion, the OFF pin goes high after the debounce period; card removal triggers immediate OFF assertion and automatic deactivation.

DS8024-RRX+ Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc./Maxim Integrated

Series:: -

Package/Case:: 28-SOIC (0.295", 7.50mm Width)

Packaging:: Bulk

Product Status:: Obsolete

Applications:: Smart Card

Interface:: Analog

Voltage - Supply:: -

Supplier Device Package:: 28-SOIC

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

DS8024-RRX+ FAQ

1.How can I place an order for DS8024-RRX+ through Aetrix?

Please submit a Request for Quotation (RFQ) for DS8024-RRX+ 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 DS8024-RRX+ reliable?

The price and inventory of DS8024-RRX+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS8024-RRX+ is usually 5 days.

3.What payment methods are accepted for DS8024-RRX+?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS8024-RRX+ transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for DS8024-RRX+?

DS8024-RRX+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your DS8024-RRX+ 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 DS8024-RRX+?

For technical support, including DS8024-RRX+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS8024-RRX+ requirements.

6.How does Aetrix verify that DS8024-RRX+ is sourced from the original manufacturer or authorized distributors?

All DS8024-RRX+ 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 DS8024-RRX+ meets industry standards.

7.What is the process for return or replacement of DS8024-RRX+?

All DS8024-RRX+ units undergo pre-shipment inspection (PSI). If there is an issue with DS8024-RRX+, 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 DS8024-RRX+ part is unused and in its original packaging.

Return procedure for DS8024-RRX+:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-09-03 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-01 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…