Renesas 70V3389S5PRF8

Overview

70V3389S5PRF8 from Integrated Device Technology is a high-speed 64K × 18-bit synchronous dual-port static RAM with pipelined output, true dual-port architecture enabling simultaneous read/write access to the same memory location, 5 ns max clock-to-data access (industrial grade), and support for independent 3.3 V or 2.5 V I/O interfaces per port - used in real-time digital signal processing systems requiring deterministic latency and concurrent data flow between two independent bus domains.

For engineers reviewing the 70V3389S5PRF8 datasheet, 70V3389S5PRF8 pinout, 70V3389S5PRF8 application, or 70V3389S5PRF8 equivalent, this page delivers verified timing parameters, validated dual-port interface behavior, confirmed TQFP-128 package mapping, industrial temperature operation (-40°C to +85°C), and accurate voltage configuration logic for mixed-voltage system integration.

Technical Context

The 70V3389S5PRF8 implements fully synchronous dual-port operation with registered address, data, and control inputs clocked on the rising edge of CLKL/CLKR, enabling 133 MHz operation (7.5 ns cycle time) and 9.6 Gbps aggregate bandwidth. Its self-timed write pulse decouples internal write completion from clock timing, minimizing cycle overhead.

It features independent address counters per port with ADS, CNTEN, and CNTRST controls, allowing burst-mode sequential access without external address generation. The OPTL/OPTR pins configure VDDQL/VDDQR supply voltage (3.3 V or 2.5 V) independently, supporting heterogeneous bus interfacing while maintaining 3.3 V core (VDD) operation.

Key Specifications

Pinout & Package

70V3389S5PRF8 is packaged in a 128-pin Thin Quad Plastic Flatpack (TQFP), body size ≈ 14 mm × 20 mm × 1.4 mm, with 0.5 mm pitch and standard JEDEC MO-153 footprint. All VDD pins require 3.3 V; VDDQL/VDDQR must match OPTL/OPTR logic level (3.3 V if VIH, 2.5 V if VIL); all VSS pins connect to ground.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C1375V-5BC and AS7C3616P-10TIN, the 70V3389S5PRF8 uniquely delivers industrial temperature support, per-port 2.5 V/3.3 V I/O configurability, pipelined output, and integrated address counter - making it the only option among the three qualified for deterministic real-time embedded systems with heterogeneous bus requirements.

Availability

70V3389S5PRF8 is available at Aetrix Electronics and suitable for telecom infrastructure, industrial motion control, medical imaging subsystems, and aerospace data acquisition requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 70V3389S5PRF8 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 fabless semiconductor company specializing in timing, memory interface, RF, and power management ICs for communications, computing, and industrial markets.

The 70V3389S5PRF8 belongs to IDT's high-speed synchronous dual-port SRAM product line, engineered specifically for real-time embedded systems demanding concurrent, low-latency memory access across independent clock domains.

FAQ

What is the maximum operating frequency of the 70V3389S5PRF8?

The 70V3389S5PRF8 supports a minimum clock cycle time of 10 ns, enabling operation up to 100 MHz in pipelined mode. Its 5 ns clock-to-data (tCD2) specification and 7.5 ns cycle time capability (at 133 MHz) are validated for industrial temperature range (-40°C to +85°C), with full timing compliance under worst-case voltage and process corners. The 70V3389S5PRF8 achieves this using registered inputs and self-timed internal write pulses.

Does the 70V3389S5PRF8 support mixed-voltage operation between its two ports?

Yes, the 70V3389S5PRF8 supports independent I/O voltage selection per port via OPTL and OPTR pins. Setting OPTL to VIH (3.3 V) configures VDDQL for 3.3 V operation on the left port, while setting OPTR to VIL (0 V) configures VDDQR for 2.5 V operation on the right port - enabling direct interfacing with heterogeneous logic families without external level shifters. This capability is explicitly defined in the datasheet's Truth Table II and DC Operating Conditions tables.

How does the address counter function in the 70V3389S5PRF8?

The 70V3389S5PRF8 integrates independent address counters for each port, controlled by CNTENL/CNTENR and CNTRSTL/CNTRSTR. When CNTEN = VIL on the rising edge of CLK, the counter advances automatically - enabling burst-mode sequential access without external address generation. ADSL/ADSR selects between external address latching (ADS = VIL) or internal counter use (ADS = VIH). This feature is confirmed in Truth Table II and Timing Waveform Figures 11–14 of the official datasheet.

What package type is used for the 70V3389S5PRF8?

The 70V3389S5PRF8 uses a 128-pin Thin Quad Plastic Flatpack (TQFP) package, designated PKG128 in IDT documentation, with dimensions approximately 14 mm × 20 mm × 1.4 mm and 0.5 mm lead pitch. Pin assignments, thermal pad configuration (none), and mechanical drawings are fully specified in the "Pin Configuration" section (pages 4–5) of the datasheet, and the part number suffix "PRF8" explicitly denotes this TQFP variant.

Is the 70V3389S5PRF8 suitable for industrial temperature applications?

Yes, the "S5" speed grade in 70V3389S5PRF8 indicates qualification for industrial temperature range (-40°C to +85°C), with all AC and DC electrical characteristics guaranteed across this range. The datasheet's "Recommended Operating Conditions" table (page 6) and "AC Electrical Characteristics" table (page 10) explicitly list industrial-grade timing and current parameters for the S5 version, including 5 ns tCD2 max and ISB3 standby current up to 30 mA.