Renesas 70V3589S166DRG8

Overview

70V3589S166DRG8 from IDT (now Renesas) is a high-speed 128K × 36-bit synchronous dual-port SRAM with true dual-port architecture enabling simultaneous read/write access to the same memory location from independent left and right ports. It operates at 166 MHz with 3.6 ns clock-to-data-out (pipelined mode), supports selectable 3.3 V or 2.5 V I/O interfaces per port, and delivers 12 Gbps aggregate bandwidth. It is used in high-throughput packet buffering and real-time inter-processor communication systems.

For engineers reviewing the 70V3589S166DRG8 datasheet, 70V3589S166DRG8 pinout, 70V3589S166DRG8 application, or 70V3589S166DRG8 equivalent, key selection criteria include guaranteed 166 MHz operation in commercial grade, pipelined/flow-through output mode flexibility, independent port voltage selection (3.3 V/2.5 V), JTAG IEEE 1149.1 compliance, and support for depth expansion via dual chip enables without external logic.

Technical Context

This device implements fully synchronous dual-port operation on both ports, with all control, address, and data inputs registered on the rising edge of CLK. It features self-timed write cycles and dual-cycle deselect (DCD) in pipelined mode to ensure deterministic timing margins.

The memory includes independent address counters per port with CNTEN and REPEAT controls, allowing burst-address generation and repeat addressing without external logic. Each port has separate byte enables (BE0–BE3) supporting 9-bit byte granularity and bus-matching compatibility across mixed-voltage systems.

Key Specifications

Pinout & Package

208-pin PQFP package (DRG208), 28 mm × 28 mm × 3.5 mm body, 0.65 mm lead pitch. Pin 1 marked by corner notch or dot; top-side marking includes date code and part number.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-port SRAM applications.

Compared with CY7C1362BV33-166AXC and AS7C3128B-166JCIN, the 70V3589S166DRG8 uniquely supports per-port 2.5 V/3.3 V I/O selection and integrated JTAG, while its address counter with REPEAT enables zero-overhead burst transfers-critical for real-time buffering where external logic adds latency or complexity.

Availability

70V3589S166DRG8 is available at Aetrix Electronics and suitable for high-bandwidth packet buffering, real-time inter-processor communication, and digital signal processing frame storage requiring stable component supply and long-term industrial availability.

Supply support for 70V3589S166DRG8 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

Renesas Electronics (formerly Integrated Device Technology, IDT) is a global semiconductor leader specializing in high-performance timing, memory, and connectivity solutions for communications, computing, and industrial markets.

The 70V3589S166DRG8 belongs to IDT's high-speed synchronous dual-port SRAM product line, designed specifically for applications demanding deterministic low-latency memory access with independent port control and mixed-voltage interoperability.

FAQ

What is the maximum operating frequency of the 70V3589S166DRG8?

The 70V3589S166DRG8 is rated for 166 MHz operation in commercial temperature range (0°C to +70°C). Industrial temperature range (-40°C to +85°C) supports up to 133 MHz only. This 166 MHz rating enables a 6 ns clock cycle time and 12 Gbps aggregate bandwidth across both ports.

Does the 70V3589S166DRG8 support mixed-voltage operation between its two ports?

Yes, the 70V3589S166DRG8 supports independent I/O voltage selection per port via OPTL and OPTR pins. Each port can be configured for either 3.3 V (±150 mV) or 2.5 V (±100 mV) signaling, allowing one port to interface with a 3.3 V FPGA while the other connects to a 2.5 V ASIC without external level shifters.

What is the purpose of the REPEAT pin on the 70V3589S166DRG8?

The REPEAT pin (REPEATL/REPEATR) resets the internal address counter to the last valid address loaded via ADS on the corresponding port. This enables efficient circular buffer or ping-pong memory access patterns without software intervention or external address generation logic-reducing latency and FPGA resource usage in streaming applications.

Is JTAG boundary-scan supported on the 70V3589S166DRG8?

Yes, the 70V3589S166DRG8 includes full IEEE 1149.1-compliant JTAG support with dedicated TCK, TMS, TDI, TDO, and TRST pins. This enables boundary-scan testing, in-system verification, and debug capabilities during manufacturing and field deployment.

What package type is used for the 70V3589S166DRG8?

The 70V3589S166DRG8 is supplied in a 208-pin Plastic Quad Flatpack (PQFP) package, designated DRG208, with dimensions of 28 mm × 28 mm × 3.5 mm and 0.65 mm lead pitch. This package is RoHS-compliant and supports standard surface-mount reflow processes.