Renesas 70V3589S133BF

Overview

70V3589S133BF 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 133MHz (7.5ns cycle time), supports selectable pipelined or flow-through output modes, and features dual 3.3V/2.5V I/O voltage capability per port for mixed-voltage system interfacing - used in telecom line cards requiring deterministic low-latency data buffering between protocol engines and packet processors.

For engineers reviewing the 70V3589S133BF datasheet, 70V3589S133BF pinout, 70V3589S133BF application, or 70V3589S133BF equivalent, key selection criteria include guaranteed 4.2ns clock-to-data-out in pipelined mode, JTAG IEEE 1149.1 compliance for boundary-scan testability, industrial temperature support (−40°C to +85°C), and depth-expansion-ready dual chip enables - all critical for high-reliability networking and real-time control systems.

Technical Context

This device implements fully synchronous operation on both ports with registered address, data, and control inputs, enabling minimal setup/hold times (1.7ns setup, 0.5ns hold @133MHz). Its dual-port memory array uses dedicated input registers and self-timed write logic to achieve fast cycle times without external timing constraints.

The architecture supports independent voltage selection per port via OPTL/OPTR pins, allowing one port to operate at 3.3V while the other runs at 2.5V - essential for bridging legacy and modern bus standards. Dual-cycle deselect (DCD) and counter repeat functionality further enhance burst-mode data handling in packet-forwarding pipelines.

Key Specifications

Pinout & Package

70V3589S133BF is packaged in a 208-pin fine-pitch Ball Grid Array (fpBGA) with 0.8 mm ball pitch and 15 mm × 15 mm body size. Pin functions are symmetrically distributed across left (L) and right (R) ports, supporting identical signal routing on both sides of the PCB.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C1362BV33-133AXC and IDT70V3599S133BG, the 70V3589S133BF uniquely delivers per-port 3.3V/2.5V I/O flexibility in a compact 208-pin fpBGA, enabling mixed-voltage integration without redesign - a decisive advantage for space-constrained telecom and defense platforms.

Availability

70V3589S133BF is available at Aetrix Electronics and suitable for telecom infrastructure, industrial automation, and defense electronics requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for mission-critical deployments.

Supply support for 70V3589S133BF 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 Corporation (formerly Integrated Device Technology) designs high-performance memory and interface solutions for communications, computing, and industrial markets.

The IDT70V35xx family targets high-bandwidth, low-latency dual-port memory applications in networking equipment, real-time control systems, and signal processing platforms where deterministic timing and voltage flexibility are mandatory.

FAQ

What is the maximum operating frequency of the 70V3589S133BF in pipelined mode?

The 70V3589S133BF supports up to 133MHz operation in pipelined mode, corresponding to a minimum clock cycle time of 7.5ns. This is validated across the industrial temperature range (−40°C to +85°C) and confirmed by tCYC2 = 7.5ns (max) in the AC Electrical Characteristics table. The device achieves this using registered inputs and optimized internal timing paths.

Does the 70V3589S133BF support independent I/O voltage selection on each port?

Yes, the 70V3589S133BF supports independent I/O voltage selection per port via OPTL and OPTR pins. Setting OPTL to VIH (3.3V) configures the left port for 3.3V I/O operation with VDDQL = 3.3V; setting it to VIL (0V) configures 2.5V operation with VDDQL = 2.5V. The right port operates identically and independently using OPTR and VDDQR.

What is the function of the REPEAT pin on the 70V3589S133BF?

The REPEATL and REPEATR pins on the 70V3589S133BF control the address counter repeat function. When asserted (VIH), they reset the internal address counter to the last valid address loaded via ADSL or ADSR. This enables efficient burst sequential access without host CPU address updates - particularly valuable in packet payload streaming and DMA-based transfers.

Is JTAG boundary-scan supported on the 70V3589S133BF?

Yes, the 70V3589S133BF includes full IEEE 1149.1-compliant JTAG test circuitry with TCK, TMS, TDI, TDO, and TRST pins. This enables boundary-scan testing, in-system programming verification, and production fault isolation without requiring physical probe access to individual signal lines.

What package type is used for the 70V3589S133BF?

The 70V3589S133BF is supplied in a 208-pin fine-pitch Ball Grid Array (fpBGA) package with 0.8 mm ball pitch and 15 mm × 15 mm body dimensions. This package is distinct from the 208-pin PQFP and 256-pin BGA variants in the same family and requires specific PCB land pattern and reflow profile validation.