Renesas 70V3389S6PRF8

Overview

70V3389S6PRF8 from Integrated Device Technology is a high-speed 64K × 18-bit synchronous dual-port static RAM with pipelined output, 3.3V core supply, and selectable 3.3V/2.5V I/O interface per port. It supports simultaneous read/write access on independent left/right ports, delivers 133MHz operation (7.5ns cycle time), and enables burst-mode data transfer in telecom switching, network packet buffering, and real-time video frame stores.

For engineers reviewing the 70V3389S6PRF8 datasheet, 70V3389S6PRF8 pinout, 70V3389S6PRF8 application, or 70V3389S6PRF8 equivalent, key selection criteria include pipelined clock-to-data timing (≤6ns), dual-voltage I/O flexibility (OPTL/OPTR-controlled), counter-enable/reset functionality for address sequencing, and industrial-grade standby current (≤30mA full standby) across temperature.

Technical Context

The 70V3389S6PRF8 implements true dual-port SRAM cells with fully synchronous register-controlled inputs on both ports-address, data, and control signals are latched on the rising edge of CLKL/CLKR. Its self-timed write architecture decouples internal write pulse generation from clock edge timing, enabling minimal cycle time without external timing constraints.

Each port features independent chip enables (CE0X/CE1X), byte enables (UBL/LBL and UBR/LBR), address strobe (ADSL/ADSR), and counter control (CNTENX/CNTRSTX). The OPTL and OPTR pins configure VDDQL/VDDQR to 3.3V or 2.5V independently, allowing mixed-voltage system interfacing while maintaining 3.3V core operation.

Key Specifications

Pinout & Package

70V3389S6PRF8 is housed in a 128-pin Thin Quad Plastic Flatpack (TQFP), with 0.5 mm pitch, body size ≈14 mm × 20 mm × 1.4 mm. All VDD pins require 3.3V ±150mV; VDDQL/VDDQR must match OPTL/OPTR logic level (3.3V for VIH, 2.5V for VIL).

Key Features

Applications

Equivalent & Alternatives

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

Compared with 70V3389S5PRF8 and 70V3389S4PRF8, the 70V3389S6PRF8 offers optimal balance of commercial-temperature reliability, 6ns timing margin, and 12ns cycle time-ideal for cost-sensitive telecom and video infrastructure where 83.3MHz sustained bandwidth suffices.

Availability

70V3389S6PRF8 is available at Aetrix Electronics and suitable for telecom switching fabric, network packet buffering, and real-time video frame store applications requiring stable component supply across production lifecycles.

Supply support for 70V3389S6PRF8 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, designs high-performance timing, memory, and interface solutions for communications, computing, and industrial markets.

The 70V3389 family delivers synchronous dual-port SRAMs optimized for deterministic, low-latency data exchange in real-time systems-targeting telecom infrastructure, packet processing, and video processing where simultaneous port access and pipelined timing are critical.

FAQ

What is the maximum operating frequency of the 70V3389S6PRF8?

The 70V3389S6PRF8 supports a maximum clock frequency of 83.3 MHz, derived from its 12 ns pipelined cycle time (tCYC2). This enables sustained 9.6 Gbps aggregate bandwidth across both ports. The device achieves this while maintaining guaranteed 6 ns clock-to-data valid (tCD2) and meets all AC timing parameters over the commercial temperature range (0°C to +70°C).

How does the address counter function in the 70V3389S6PRF8?

The 70V3389S6PRF8 integrates independent address counters per port, controlled by CNTENL/CNTENR and CNTRSTL/CNTRSTR. When ADS = VIH and CNTEN = VIL, the counter advances on each CLK rising edge-eliminating external address generation logic. CNTRST asynchronously resets the counter to address 0, enabling repeat burst sequences ideal for coefficient tables or video line buffers.

Can the left and right ports of the 70V3389S6PRF8 operate at different I/O voltages?

Yes. The 70V3389S6PRF8 allows independent I/O voltage configuration: OPTL sets VDDQL to 3.3V (VIH) or 2.5V (VIL), and OPTR sets VDDQR accordingly. This enables the left port to interface with a 3.3V FPGA while the right port connects to a 2.5V ASIC-no external level shifters required. Core VDD remains fixed at 3.3V.

What power-saving features does the 70V3389S6PRF8 support?

The 70V3389S6PRF8 provides multiple low-power modes: full standby (ISB3 ≤15 mA) activates when both CE0 and CE1 are held at CMOS-inactive levels (>VDDQ−0.2V); partial standby (ISB2 ≤225 mA) engages when one port is disabled; and dynamic current scales with activity (IDD ≤310 mA at 83.3 MHz). CE0/CE1 control also enables per-port power gating.

Is the 70V3389S6PRF8 pin-compatible with other speed grades in the same package?

Yes. The 70V3389S6PRF8 shares identical 128-pin TQFP (PKG128) pinout and signal mapping with 70V3389S4PRF8 and 70V3389S5PRF8. This allows drop-in replacement across speed/temperature grades-e.g., upgrading from S6 to S5 for industrial use or to S4 for higher-frequency designs-without PCB layout changes.