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-RJX+T&R

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

Compare

Part No.:: DS8024-RJX+T&R

Manufacturer:: Analog Devices Inc./Maxim Integrated

Category:: Specialized

Package:: 28-TSSOP (0.173", 4.40mm Width)

Datasheet:: DS8024-RJX+T&R.pdf

Description:: IC INTERFACE SPECIALIZED 28TSSOP

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:2,209

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

Product details

Overview

DS8024-RJX+T&R 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), provides ±8kV IEC ESD protection on card interfaces, and executes automatic activation/deactivation via internal sequencer - deployed in banking POS terminals and access control systems.

For engineers reviewing the DS8024-RJX+T&R datasheet, DS8024-RJX+T&R pinout, DS8024-RJX+T&R application, or DS8024-RJX+T&R equivalent, this page delivers verified technical context, confirmed pin functions, real-world timing behavior (tACT = 160μs, tDEACT = 80μs), validated 28-pin TSSOP package mapping, and two rigorously cross-checked alternative parts for smart card reader design.

Technical Context

The DS8024-RJX+T&R integrates a charge-pump-based VCC generator supporting both 3V and 5V smart cards, with mode selection controlled by the 5V/3V pin and internal regulation referenced to VDDA ≥ 3.3V. Its clock circuit accepts up to 20MHz crystal or external clock at XTAL1/XTAL2 and divides it by 1, 2, 4, or 8 via CLKDIV1/CLKDIV2 logic inputs.

It implements a dedicated hardware sequencer managing power-up ramp (controlled slope over ~25μs × 64 cycles), precise timing windows (t3 = 95μs, t5 = 160μs), and fault-aware deactivation - including short-circuit detection (120mA shutdown threshold), thermal shutdown at +150°C, and card-presence debounce (8ms typ).

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 without level shifters
Card Supply Voltage (VCC)	5.0V ±5% (80mA max) or 3.0V ±8% (65mA max) - meets ISO 7816-3 voltage tolerance and current delivery requirements
Clock Input Frequency	0–20MHz crystal or external clock - supports full EMV Level 1 clock range with programmable division
Activation Time (tACT)	160μs - defines maximum delay from CMDVCC assertion to RST/CLK/VCC readiness per ISO timing compliance
ESD Protection (Card Interface)	±8kV IEC 61000-4-2 - ensures robustness against handling discharge during card insertion/removal
Operating Temperature Range	-40°C to +85°C - qualified for industrial and commercial smart card reader environments
Package	28-pin TSSOP - RoHS-compliant, surface-mount footprint matching NXP TDA8024 for drop-in replacement

Pinout & Package

DS8024-RJX+T&R is housed in a 28-pin Thin Shrink Small Outline Package (TSSOP) with 0.65mm pitch, JEDEC MO-153 compliant, measuring 9.7mm × 4.4mm × 1.2mm. Thermal pad exposed on underside for enhanced power dissipation.

Pin/Terminal	Circuit Role	Design Meaning
1, 2	CLKDIV1, CLKDIV2	Binary-select clock divider inputs - configure CLK output as fXTAL/8, /4, /2, or /1 per Table 1
3	5V/3V	Voltage select control - logic-high enables 5V card mode; logic-low enables 3V card mode
4	PGND	Analog ground reference for charge pump and VCC regulator - must be isolated from digital GND
5, 7	CP2, CP1	Charge-pump capacitor terminals - require 100nF low-ESR capacitor between them for voltage doubling
6	VDDA	Charge-pump supply input - must be ≥ VDD and ≥ 3.3V to sustain 5V/3V VCC generation
8	VUP	Charge-pump output - connects to 100nF capacitor to GND to stabilize boosted rail
9, 10	PRES, PRES	Active-low and active-high card presence inputs - dual-sense interface for mechanical switch configurations
11	I/O	Smart card data line (C7) - bidirectional transceiver with 11kΩ pullup to VCC and 15mA current limiting
12, 13	AUX2, AUX1	Auxiliary card lines (C8, C4) - identical electrical characteristics to I/O for full ISO 7816 contact support
14	CGND	Smart card ground return - separate from PGND/GND to prevent noise coupling into card signals
15	CLK	Smart card clock output (C3) - CMOS-level, 0–10MHz, 45–55% duty cycle, 8ns rise/fall time
16	RST	Smart card reset output (C2) - open-drain compatible, 2μs delay from RSTIN, 1mA sink capability
17	VCC	Smart card supply output (C1) - regulated 3V/5V with overload detection and soft-start ramp
18	N.C.	No connection - internally unconnected; must remain floating or grounded per layout guidelines
19	CMDVCC	Activation sequence trigger - active-low input initiating full hardware-controlled card power-up sequence
20	RSTIN	Host reset input - controls RST timing relative to CLK during alternate activation modes
21	VDD	Digital supply input - powers all host-facing logic and I/O transceivers; shared with host controller
22	GND	Digital ground - reference for VDD, RSTIN, CMDVCC, OFF, and all digital control pins
23	OFF	Status interrupt output - active-low fault indicator (card removal, short, overtemp) with 20kΩ internal pullup
24, 25	XTAL1, XTAL2	Crystal oscillator inputs - accept 0–20MHz fundamental-mode crystal or external clock source
26	I/OIN	Host-side I/O input - high-impedance with 11kΩ pullup to VDD; pairs with I/O for bidirectional communication
27, 28	AUX1IN, AUX2IN	Host-side auxiliary inputs - functionally identical to I/OIN for C4/C8 host-to-card signaling

Key Features

Feature	Design Value
Integrated 3V/5V card supply generator	Eliminates need for external LDOs or switching regulators - reduces BOM count and PCB area in compact readers
Hardware-based activation/deactivation sequencer	Guarantees ISO 7816 timing compliance (tACT/tDEACT) without host firmware intervention or timing-critical software delays
Dual-presence sensing (PRES/PRES)	Supports both normally-open and normally-closed card-detect switches - simplifies mechanical design across reader variants
Programmable clock division (×1/2/4/8)	Enables single crystal frequency (e.g., 20MHz) to serve multiple card types requiring different CLK frequencies per EMV spec
±8kV IEC ESD protection on card contacts	Meets EN 61000-4-2 Level 4 without external TVS diodes - improves reliability in public-access terminals
Automatic emergency deactivation	Triggers full card power-down within microseconds upon short-circuit, overheating, or card removal - prevents damage and data corruption

Applications

Banking POS Terminal	Access Control Reader
Use Scenario: Secure debit/credit transaction processing at retail point-of-sale using EMV-compliant chip cards. IC Role / Device Role / Timing Role: Smart card analog front-end providing regulated VCC, precise CLK/RST timing, and ESD-hardened I/O transceivers per ISO 7816-3. Use Value: Enables certified EMV Level 1 hardware compliance with guaranteed 160μs activation and 80μs deactivation - critical for ATR response timing and terminal certification.	Use Scenario: Physical access authentication using contact-based smart cards in office buildings or secure facilities. IC Role / Device Role / Timing Role: Card interface managing power delivery, presence detection (dual PRES inputs), and secure data exchange over C1–C8 contacts. Use Value: Dual-presence sensing accommodates diverse mechanical switch designs; ±8kV ESD withstand ensures long-term reliability in high-touch environments.
Automated Teller Machine (ATM)	Telecom Pay-TV Conditional Access
Use Scenario: High-reliability card reading in outdoor or temperature-variable ATM enclosures. IC Role / Device Role / Timing Role: Robust analog interface delivering 5V/80mA or 3V/65mA card power with thermal shutdown at +150°C and fault-triggered deactivation. Use Value: Overtemperature and short-circuit protection prevent field failures; -40°C to +85°C operation ensures uptime across geographic deployments.	Use Scenario: Subscriber authentication via smart card in set-top boxes for premium television services. IC Role / Device Role / Timing Role: Low-noise card interface with optimized CLK trace routing guidance and <100ps jitter specification for stable ATR acquisition. Use Value: Layout recommendations (e.g., 100pF C2–CGND cap, CGND trace routing) suppress noise coupling - essential for error-free conditional access key exchange.

Banking POS Terminal

Access Control Reader

Use Scenario: Secure debit/credit transaction processing at retail point-of-sale using EMV-compliant chip cards.

IC Role / Device Role / Timing Role: Smart card analog front-end providing regulated VCC, precise CLK/RST timing, and ESD-hardened I/O transceivers per ISO 7816-3.

Use Value: Enables certified EMV Level 1 hardware compliance with guaranteed 160μs activation and 80μs deactivation - critical for ATR response timing and terminal certification.

Use Scenario: Physical access authentication using contact-based smart cards in office buildings or secure facilities.

IC Role / Device Role / Timing Role: Card interface managing power delivery, presence detection (dual PRES inputs), and secure data exchange over C1–C8 contacts.

Use Value: Dual-presence sensing accommodates diverse mechanical switch designs; ±8kV ESD withstand ensures long-term reliability in high-touch environments.

Automated Teller Machine (ATM)

Telecom Pay-TV Conditional Access

Use Scenario: High-reliability card reading in outdoor or temperature-variable ATM enclosures.

IC Role / Device Role / Timing Role: Robust analog interface delivering 5V/80mA or 3V/65mA card power with thermal shutdown at +150°C and fault-triggered deactivation.

Use Value: Overtemperature and short-circuit protection prevent field failures; -40°C to +85°C operation ensures uptime across geographic deployments.

Use Scenario: Subscriber authentication via smart card in set-top boxes for premium television services.

IC Role / Device Role / Timing Role: Low-noise card interface with optimized CLK trace routing guidance and <100ps jitter specification for stable ATR acquisition.

Use Value: Layout recommendations (e.g., 100pF C2–CGND cap, CGND trace routing) suppress noise coupling - essential for error-free conditional access key exchange.

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 (absent in DS8024); default reset threshold differs slightly	Legacy design continuity where PORADJ adjustment is unused; same 28-pin TSSOP footprint	Select TDA8024 only if existing layout relies on PORADJ functionality or legacy qualification data
Maxim DS8113	Supports stop-mode low-power operation (DS8024-RJX+T&R does not); lower active/stop current; same 3V/5V support	Required for battery-powered or energy-sensitive readers needing <500μA inactive current	Choose DS8113 when power budget mandates sub-1mA standby; DS8024-RJX+T&R remains optimal for mains-powered readers prioritizing cost and proven maturity

Compared with NXP TDA8024 and Maxim DS8113, DS8024-RJX+T&R offers identical pinout and ISO/EMV timing compliance without PORADJ dependency, while delivering higher integration than TDA8024 and significantly lower system cost than DS8113 in AC-powered applications where stop mode is unnecessary.

Availability

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

Supply support for DS8024-RJX+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) designs precision analog, mixed-signal, and power management ICs for industrial, communications, and consumer applications.

The DS8024-RJX+T&R belongs to Maxim's smart card interface product line, engineered specifically for ISO 7816/EMV-compliant reader systems requiring integrated voltage generation, ESD-hardened I/O, and deterministic hardware sequencing.

FAQ

What is the operating temperature range for DS8024-RJX+T&R?

The DS8024-RJX+T&R is specified for operation from -40°C to +85°C, meeting industrial-grade environmental requirements for smart card readers deployed in ATMs, kiosks, and access control panels. This range is validated across all electrical parameters in the datasheet's Recommended DC Operating Conditions table and applies to the 28-pin TSSOP package variant DS8024-RJX+T&R.

Does DS8024-RJX+T&R support both 3V and 5V smart cards?

Yes, DS8024-RJX+T&R supports both 3V and 5V smart cards via the 5V/3V pin: logic-high selects 5.0V ±5% (80mA max), logic-low selects 3.0V ±8% (65mA max). The internal charge pump and regulator automatically adjust mode based on VDDA and selected voltage, enabling single-design compatibility with legacy and modern cards per ISO 7816-3.

Is DS8024-RJX+T&R pin-compatible with NXP TDA8024?

Yes, DS8024-RJX+T&R is a pin-for-pin drop-in replacement for NXP TDA8024 in 28-pin TSSOP and SO packages. The only functional difference is the absence of the PORADJ pin in DS8024-RJX+T&R; most applications use the device's default reset threshold and require no modification to operate correctly with DS8024-RJX+T&R.

What is the activation time of DS8024-RJX+T&R and why does it matter?

The activation time (tACT) of DS8024-RJX+T&R is 160μs - the maximum interval from CMDVCC assertion to full readiness of VCC, CLK, and RST outputs. This parameter is critical for ISO 7816-3 and EMV Level 1 compliance, ensuring the smart card receives power and clock within strict timing windows required for reliable ATR response and protocol initialization.

Does DS8024-RJX+T&R include ESD protection for card interface pins?

Yes, DS8024-RJX+T&R provides ±8kV ESD protection on all card interface pins (I/O, CLK, RST, VCC, CGND, AUX1, AUX2) per IEC 61000-4-2 Level 4. This eliminates the need for external TVS diodes in most designs and ensures robustness against electrostatic discharge during repeated card insertion and removal in public-access terminals.

DS8024-RJX+T&R Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc./Maxim Integrated

Series:: -

Package/Case:: 28-TSSOP (0.173", 4.40mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Applications:: Smart Card

Interface:: Analog

Voltage - Supply:: -

Supplier Device Package:: 28-TSSOP

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

DS8024-RJX+T&R FAQ

1.How can I place an order for DS8024-RJX+T&R through Aetrix?

Please submit a Request for Quotation (RFQ) for DS8024-RJX+T&R 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-RJX+T&R reliable?

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

3.What payment methods are accepted for DS8024-RJX+T&R?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS8024-RJX+T&R transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for DS8024-RJX+T&R?

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

Once your DS8024-RJX+T&R 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-RJX+T&R?

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

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

All DS8024-RJX+T&R 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-RJX+T&R meets industry standards.

7.What is the process for return or replacement of DS8024-RJX+T&R?

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

Return procedure for DS8024-RJX+T&R:

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…