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

Renesas SAP5SD-A-G1-T

Name: SAP5SD-A-G1-T
Brand: Renesas
SKU: SAP5SD-A-G1-T
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SAP5SD-A-G1-T

Manufacturer:: Renesas

Category:: Specialized

Package:: 20-SOIC (0.295", 7.50mm Width)

Datasheet:: SAP5SD-A-G1-T.pdf

Description:: IC INTERFACE SPECIALIZED V3.0

Quantity:: RFQ Add To RFQ list

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Product details

Overview

SAP5SD-A-G1-T from Integrated Device Technology is a universal AS-Interface (AS-i) transceiver IC compliant with AS-Interface Complete Specification V3.0, designed for physical layer interfacing in industrial sensor/actuator networks. It supports Standard Slave Mode, Safety Mode (SAP5S variant only), and Master Mode; delivers 55mA current drive via on-chip electronic inductor; operates from -25°C to +85°C; and uses SOP20 package for AS-i master/slave modules requiring two-wire bus power+data transmission.

For engineers reviewing the SAP5SD-A-G1-T datasheet, SAP5SD-A-G1-T pinout, SAP5SD-A-G1-T application, or SAP5SD-A-G1-T equivalent, this page provides verified technical context, validated pin functions, confirmed AS-i V3.0 compliance, real-world safety-mode timing behavior, and traceable alternative options for industrial fieldbus node design.

Technical Context

The SAP5SD-A-G1-T implements full AS-i physical layer functionality including burst-protected receiver/transmitter, integrated 55mA electronic inductor for bus power delivery, and dual LED drivers supporting all V3.0 status indication modes. Its internal EEPROM stores configuration data for mode selection, safety parameters, and ID codes.

It features automatic 5.33/16 MHz crystal frequency detection, synchronous data I/O mode, programmable input filtering, and dedicated communication watchdogs. The device supports extended address mode with 4-input/4-output processing and includes thermal protection and power-fail detection circuitry.

Key Specifications

Parameter	Value and Actual Design Meaning
AS-i Compliance	Full AS-Interface Complete Specification V3.0 compliance - ensures interoperability with certified masters, slaves, and safety devices in industrial networks.
Operating Temperature	-25°C to +85°C - qualified for use in harsh industrial environments without external thermal management.
Supply Voltage Range	16V to 34V DC on LTGP–LTGN - powers AS-i bus directly from standard 24V industrial supply with ±10% tolerance.
Electronic Inductor Drive	55mA continuous sink capability at UOUT - eliminates need for external inductor in AS-i slave power supply design.
Clock Support	5.33 MHz or 16 MHz crystal - auto-detected at startup; enables precise timing for AS-i telegram generation and synchronization.
Digital I/O Capability	4-parameter pins (P[3:0]), 4-data pins (D[3:0]), DSTBn, PSTBn - supports full AS-i parameter/data exchange protocol with configurable timing modes.
LED Outputs	LED1 and LED2 - drive standard AS-i status LEDs per V3.0 specification for fault, activity, and safety state indication.

Pinout & Package

SOP20 package (300 mil), surface-mount, RoHS-compliant; 20-pin layout optimized for AS-i bus interface with dedicated bus terminals, digital I/O banks, oscillator inputs, and status outputs.

Pin/Terminal	Circuit Role	Design Meaning
LTGP / LTGN	AS-i Bus Power Terminals	Connect directly to unshielded two-wire AS-i cable; LTGP carries positive bus voltage (16–34V), LTGN is return/ground reference.
UOUT	Internal Electronic Inductor Output	Delivers regulated 55mA current to power downstream logic; replaces external inductor in slave node designs.
D[3:0]	Data Port Outputs/Inputs	Bi-directional 4-bit data path for AS-i telegram payload; supports synchronous and asynchronous I/O modes per configuration.
P[3:0]	Parameter Port Outputs/Inputs	4-bit control path for AS-i addressing, mode selection, and configuration; used during initialization and reprogramming.
DSTBn	Data Strobe Input/Output	Edge-triggered strobe synchronizing D[3:0] data transfer; active-low; supports delay and synchronous timing modes.
PSTBn	Parameter Strobe Input	Active-low strobe for latching P[3:0] configuration bits; initiates parameter read/write cycles during programming.
OSC1 / OSC2	Crystal Oscillator Inputs	Accepts 5.33 MHz or 16 MHz fundamental-mode crystal; internal oscillator circuit provides clock for AS-i timing engine.
LED1 / LED2	Status Indicator Outputs	Drive AS-i-compliant LEDs showing node state (e.g., "OK", "ERROR", "SAFETY ACTIVE") per V3.0 status tables.
PFAULT	Fault Detection Input	Monitors external fault conditions (e.g., overtemperature, short-circuit); asserts internal fault flag and triggers safety response.
CDC	Current Detection Control	Enables/disables current sensing on LTGP–LTGN; used for bus diagnostics and load monitoring in master applications.

Key Features

Feature	Design Value
AS-i V3.0 Universal Mode Support	Configurable as Standard Slave, Safety Slave (SAP5S only), or Master - enables single-IC reuse across multiple node types in same product line.
Integrated Electronic Inductor	55mA output at UOUT - reduces BOM count and PCB area by eliminating discrete inductor in slave power stage.
V3.0 LED Status Compliance	Dual LED drivers (LED1/LED2) with programmable patterns - meets exact visual indication requirements of AS-i V3.0 without external logic.
On-Chip EEPROM Storage	Non-volatile storage for mode settings, safety keys, and ID extensions - enables field reprogramming via handheld tool without firmware update.
Burst Protection & EMC Hardening	Specialized input filtering and layout-aware ESD structures - achieves robust operation in high-noise factory environments per EN 61000-4-x standards.

Applications

AS-i Slave Modules	AS-i Master Modules
Use Scenario: Connecting binary sensors (e.g., limit switches, photoelectric sensors) to an AS-i network in packaging machinery. IC Role / Device Role / Timing Role: Physical layer transceiver and power regulator - converts microcontroller I/O into AS-i compliant bus signals while powering local logic from the bus. Use Value: Eliminates separate 24V-to-5V conversion and external bus driver, reducing component count and enabling compact DIN-rail mount sensor nodes.	Use Scenario: Central controller managing up to 62 AS-i slaves in automotive assembly line PLC systems. IC Role / Device Role / Timing Role: AS-i master PHY with integrated oscillator and watchdog - generates precise telegrams, monitors bus health, and handles collision detection. Use Value: Enables deterministic <1ms response time for safety-critical actuator commands without external timing ICs or FPGA logic.
AS-i Safety Modules	AS-i Repeater Nodes
Use Scenario: Emergency stop circuit in robotic workcell requiring SIL2-certified signal path per IEC 61508. IC Role / Device Role / Timing Role: Safety-mode transceiver with cryptographic code generator - validates safety telegrams and enforces strict timing windows for fault response. Use Value: Achieves sub-10ms safety reaction time using on-chip safety code generation, avoiding external safety ASICs or dual-CPU architectures.	Use Scenario: Extending AS-i network reach beyond 100m in large-scale food processing plant with multiple zone controllers. IC Role / Device Role / Timing Role: Bus repeater PHY with signal regeneration and timing retiming - restores signal integrity and compensates for cable attenuation. Use Value: Supports daisy-chain topology expansion without signal degradation, maintaining full V3.0 timing compliance across 300m total bus length.

AS-i Slave Modules

AS-i Master Modules

Use Scenario: Connecting binary sensors (e.g., limit switches, photoelectric sensors) to an AS-i network in packaging machinery.

IC Role / Device Role / Timing Role: Physical layer transceiver and power regulator - converts microcontroller I/O into AS-i compliant bus signals while powering local logic from the bus.

Use Value: Eliminates separate 24V-to-5V conversion and external bus driver, reducing component count and enabling compact DIN-rail mount sensor nodes.

Use Scenario: Central controller managing up to 62 AS-i slaves in automotive assembly line PLC systems.

IC Role / Device Role / Timing Role: AS-i master PHY with integrated oscillator and watchdog - generates precise telegrams, monitors bus health, and handles collision detection.

Use Value: Enables deterministic <1ms response time for safety-critical actuator commands without external timing ICs or FPGA logic.

AS-i Safety Modules

AS-i Repeater Nodes

Use Scenario: Emergency stop circuit in robotic workcell requiring SIL2-certified signal path per IEC 61508.

IC Role / Device Role / Timing Role: Safety-mode transceiver with cryptographic code generator - validates safety telegrams and enforces strict timing windows for fault response.

Use Value: Achieves sub-10ms safety reaction time using on-chip safety code generation, avoiding external safety ASICs or dual-CPU architectures.

Use Scenario: Extending AS-i network reach beyond 100m in large-scale food processing plant with multiple zone controllers.

IC Role / Device Role / Timing Role: Bus repeater PHY with signal regeneration and timing retiming - restores signal integrity and compensates for cable attenuation.

Use Value: Supports daisy-chain topology expansion without signal degradation, maintaining full V3.0 timing compliance across 300m total bus length.

Equivalent & Alternatives

The following parts are listed as comparable options for similar AS-i physical layer interface applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ASI4U	Single-chip AS-i universal IC with identical SOP20 footprint and V3.0 compliance; lacks integrated electronic inductor (requires external 55mA inductor).	Requires additional passive component for bus power delivery; suitable where board space allows discrete inductor placement.	Select ASI4U when legacy design reuse or inductor sourcing flexibility outweighs integration benefit of SAP5SD-A-G1-T.
SAP51D-A-G1-T	Functionally identical to SAP5SD-A-G1-T but lacks Safety Mode support; shares same SOP20 package, pinout, and EEPROM architecture.	Cannot be used in SIL2-certified safety loops; otherwise interchangeable in standard slave/master applications.	Choose SAP51D-A-G1-T for cost-sensitive non-safety AS-i nodes where Safety Mode is not required.

Compared with ASI4U and SAP51D-A-G1-T, the SAP5SD-A-G1-T uniquely combines V3.0 compliance, integrated 55mA inductor, and Safety Mode in one SOP20 package - making it the only option for compact, self-powered safety-capable AS-i slave designs.

Availability

SAP5SD-A-G1-T is available at Aetrix Electronics and suitable for AS-i master modules, AS-i slave modules, and AS-i safety modules requiring stable component supply in industrial automation, packaging equipment, and automotive production lines.

Supply support for SAP5SD-A-G1-T 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

Integrated Device Technology (IDT), now part of Renesas Electronics, is a semiconductor company specializing in timing, memory interface, RF, and industrial communications ICs with focus on high-reliability applications.

The SAP5 series was developed specifically for AS-i fieldbus physical layer implementation - targeting simplified, robust, and safety-certifiable node design in industrial control systems.

FAQ

What is the primary function of the SAP5SD-A-G1-T in an AS-i network?

The SAP5SD-A-G1-T serves as the physical layer transceiver and power regulator for AS-i networks. It handles bus signal transmission/reception, delivers up to 55mA of regulated power to local circuitry via its integrated electronic inductor, and supports Standard Slave, Safety Slave, and Master modes per AS-Interface V3.0. Its role is to bridge microcontroller-level digital I/O with the two-wire AS-i bus while ensuring timing accuracy, fault detection, and safety compliance where enabled.

Does the SAP5SD-A-G1-T support AS-i Safety Mode, and what does that require?

Yes, the SAP5SD-A-G1-T supports AS-i Safety Mode - a feature exclusive to the SAP5S variant (denoted by "S" in part number). Safety Mode requires programming of the internal EEPROM's safety area with cryptographic keys, uses dedicated timing constraints for safety telegrams, and relies on the PFAULT input for fast fault detection. It enables sub-10ms response times for safety-related events and is intended for SIL2-certified applications per IEC 61508.

What crystal frequencies does the SAP5SD-A-G1-T support, and how is selection handled?

The SAP5SD-A-G1-T supports both 5.33 MHz and 16 MHz crystals, with automatic frequency detection at power-on. The device reads oscillator characteristics during initialization and configures its PLL and timing engine accordingly. No external configuration is needed - the correct crystal must be placed on OSC1/OSC2, and the IC adapts its internal clock generation to match, ensuring precise AS-i telegram timing regardless of selected frequency.

How is the SAP5SD-A-G1-T programmed, and what tools are required?

The SAP5SD-A-G1-T is programmed via its P[3:0] and D[3:0] ports using a stationary or handheld AS-i programming device such as the IDT AS-Interface Programmer Kit USB. Configuration data - including mode selection, safety keys, and ID extensions - is written to internal EEPROM. Programming does not require soldering or firmware flashing; it is performed over the AS-i bus or dedicated programming interface, allowing field updates without hardware modification.

What is the purpose of the UOUT pin on the SAP5SD-A-G1-T, and how is it used?

The UOUT pin on the SAP5SD-A-G1-T delivers up to 55mA of regulated current sourced from the AS-i bus (LTGP–LTGN), functioning as an integrated electronic inductor. It powers local microcontroller, logic, or sensor circuitry directly - eliminating the need for an external inductor in slave node designs. UOUT must be decoupled with a 10µF capacitor to ground and is not intended for high-current loads beyond its specified rating.

SAP5SD-A-G1-T Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

Series:: -

Package/Case:: 20-SOIC (0.295", 7.50mm Width)

Packaging:: Tube

Product Status:: Active

Applications:: Actuator Sensor Interface

Interface:: AS-i

Voltage - Supply:: 16V ~ 34V

Supplier Device Package:: 20-SOIC

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

SAP5SD-A-G1-T FAQ

1.How can I place an order for SAP5SD-A-G1-T through Aetrix?

Please submit a Request for Quotation (RFQ) for SAP5SD-A-G1-T 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 SAP5SD-A-G1-T reliable?

The price and inventory of SAP5SD-A-G1-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SAP5SD-A-G1-T is usually 5 days.

3.What payment methods are accepted for SAP5SD-A-G1-T?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SAP5SD-A-G1-T transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SAP5SD-A-G1-T?

SAP5SD-A-G1-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SAP5SD-A-G1-T 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 SAP5SD-A-G1-T?

For technical support, including SAP5SD-A-G1-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SAP5SD-A-G1-T requirements.

6.How does Aetrix verify that SAP5SD-A-G1-T is sourced from the original manufacturer or authorized distributors?

All SAP5SD-A-G1-T 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 SAP5SD-A-G1-T meets industry standards.

7.What is the process for return or replacement of SAP5SD-A-G1-T?

All SAP5SD-A-G1-T units undergo pre-shipment inspection (PSI). If there is an issue with SAP5SD-A-G1-T, 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 SAP5SD-A-G1-T part is unused and in its original packaging.

Return procedure for SAP5SD-A-G1-T:

1.Submit a request within 90 days.

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

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