Renesas SAP5SD-B-G1-T

Overview

SAP5SD-B-G1-T from Integrated Device Technology is a universal AS-Interface (AS-i) transceiver IC compliant with AS-Interface Complete Specification V3.0, functioning as physical-layer interface for master or slave nodes in two-wire bus systems. It delivers 55mA current drive via on-chip electronic inductor, supports 5.33/16MHz crystal oscillators with auto-detection, and operates across -25°C to +85°C in harsh industrial environments.

For engineers reviewing the SAP5SD-B-G1-T datasheet, SAP5SD-B-G1-T pinout, SAP5SD-B-G1-T application, or SAP5SD-B-G1-T equivalent, key selection considerations include AS-i Safety Mode capability (SAP5S variant only), SOP16 package compatibility, EEPROM-based configuration storage, burst protection circuitry, and dual LED status indication per AS-i V3.0 requirements.

Technical Context

The SAP5SD-B-G1-T implements full AS-i physical layer functions including bidirectional data transmission over unshielded two-wire cable, integrated power supply generation (UOUT/U5R), and AS-i protocol handling via internal state machine. It supports three configurable modes-Standard Slave, Safety Mode (SAP5S only), and Master-each with distinct pin assignments and timing behavior.

Its architecture includes clock and communication watchdogs, thermal protection, programmable input filtering, synchronous data I/O mode, and safety-area EEPROM programming (SAP5S only). The device uses automatic frequency detection for 5.33/16MHz crystals and features dedicated pins for parameter/data ports (P[3:0]/D[3:0]), fault monitoring (PFAULT), and safety control (DSTBn/PSTBn).

Key Specifications

Pinout & Package

SAP5SD-B-G1-T is housed in a 16-pin SOP (Small Outline Package), 300 mil body width, with gull-wing leads and RoHS-compliant finish. Pin assignment follows IDT's standardized SAP5 layout for SOP16, verified in datasheet Figure 7.2 and Table 7.1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ASI4U and SAP5SD-A-G1-T, the SAP5SD-B-G1-T offers optimal balance of compact SOP16 footprint, integrated inductor, and full V3.0 compliance-including Safety Mode support-making it the preferred choice for space-constrained, safety-capable AS-i modules.

Availability

SAP5SD-B-G1-T is available at Aetrix Electronics and suitable for AS-i slave modules, AS-i safety subsystems, and AS-i master interfaces requiring stable component supply in industrial automation, packaging equipment, and material handling systems.

Supply support for SAP5SD-B-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) is a fabless semiconductor company specializing in timing, interface, and RF solutions for communications, computing, and industrial markets.

The SAP5 product line was designed specifically for AS-Interface networks-delivering single-chip physical-layer compliance, safety-enabling hardware, and robust EMC performance for factory-floor deployment.

FAQ

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

The SAP5SD-B-G1-T serves as the physical-layer transceiver and power interface for AS-Interface networks. It handles bidirectional data transmission over two-wire cable, generates regulated 5V supplies (UOUT/U5R) from the bus, and executes AS-i protocol timing and error checking. Its role is essential in both master and slave nodes, enabling direct connection of sensors and actuators without external power converters or discrete transceivers.

Does the SAP5SD-B-G1-T support AS-i Safety Mode?

Yes, the SAP5SD-B-G1-T supports AS-i Safety Mode-but only because it belongs to the SAP5S variant family. The "S" suffix in SAP5S denotes integrated safety code generation hardware, which is confirmed in the datasheet's Features section and Safety Mode functional description. This capability enables sub-millisecond response to safety-related events and is required for SIL2-compliant AS-i Safety Modules.

What crystal frequencies does the SAP5SD-B-G1-T support?

The SAP5SD-B-G1-T supports 5.33MHz and 16MHz crystals, with automatic frequency detection implemented in hardware. This dual-frequency capability is explicitly stated in the datasheet's Table 2.3 and Section 3.2.7. The oscillator circuit locks to whichever frequency is present without requiring configuration bits or external switches-simplifying design reuse across different AS-i timing architectures.

How is configuration stored and updated on the SAP5SD-B-G1-T?

Configuration data-including operational mode, address, safety parameters, and ID codes-is stored in internal EEPROM. Programming is performed via the parameter port (P[3:0]) using either a stationary IDT AS-Interface Programmer Kit USB or a handheld programming device. The EEPROM supports user, firmware, and safety-area sections, each with defined write cycles and protection mechanisms per datasheet Sections 4.1–4.4.

What package type is used for the SAP5SD-B-G1-T?

The SAP5SD-B-G1-T uses a 16-pin SOP (Small Outline Package) with 300 mil body width, as confirmed in the Ordering Information table on page 3 of the datasheet. This package is distinct from the SOP20 variant (e.g., SAP5SD-A-G1-T) and has verified pin assignments documented in Figure 7.2 and Table 7.1-ensuring mechanical and thermal compatibility with standard SMT assembly processes.