Renesas 70V3379S6PRF

Overview

70V3379S6PRF from Integrated Device Technology is a high-speed 3.3V 32K × 18-bit synchronous dual-port static RAM with pipelined output, true dual-port architecture enabling simultaneous left/right port access, 6 ns max clock-to-data (tCD2), and support for 3.3V or 2.5V I/O interface per port via independent OPTL/OPTR pins. It is used in real-time packet buffering in telecom line cards.

For engineers reviewing the 70V3379S6PRF datasheet, 70V3379S6PRF pinout, 70V3379S6PRF application, or 70V3379S6PRF equivalent, key selection criteria include pipelined read latency, dual-voltage I/O flexibility, counter-enabled burst addressing, industrial temperature support, and depth-expansion capability using dual chip enables CE0/CE1 without external logic.

Technical Context

The 70V3379S6PRF implements fully synchronous operation on both ports with registers on all address, data, and control inputs-enabling 133 MHz operation at 7.5 ns cycle time (tCYC2). Its self-timed write pulse decouples internal write timing from clock edge transitions, reducing timing dependency.

It features independent address counters per port controlled by CNTENL/CNTRSTL (left) and CNTENR/CNTRSTR (right), with ADSL/ADSR enabling external address loading or counter-based sequential access. The OPTL/OPTR pins configure VDDQL/VDDQR to 3.3V or 2.5V independently, allowing mixed-voltage system interfacing.

Key Specifications

Pinout & Package

70V3379S6PRF is packaged in a 128-pin Thin Quad Flat Package (TQFP), body size 14 mm × 20 mm × 1.4 mm, with 0.4 mm lead pitch. All VDD pins require 3.3V supply; VDDQL/VDDQR must match OPTL/OPTR voltage selection (3.3V if OPT = VIH, 2.5V if OPT = 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 CY7C1375BV33-167AXC and AS7C33256PFSIG, the 70V3379S6PRF uniquely delivers per-port selectable I/O voltage, pipelined determinism, and integrated address counters - making it optimal for mixed-voltage, high-throughput, and burst-oriented embedded systems where timing predictability and interface flexibility are mandatory.

Availability

70V3379S6PRF is available at Aetrix Electronics and suitable for telecom infrastructure, industrial motion control, broadcast video processing, and automated test equipment requiring stable component supply across commercial temperature range and long production lifecycles.

Supply support for 70V3379S6PRF 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 solutions for communications, computing, and industrial markets.

The IDT70V3379 product line was designed specifically for high-bandwidth, low-latency dual-access memory applications in telecom line cards, FPGA co-processing, and real-time control systems demanding deterministic pipelined timing and flexible voltage interfacing.

FAQ

What is the maximum operating frequency of the 70V3379S6PRF?

The 70V3379S6PRF supports a minimum clock cycle time (tCYC2) of 12 ns, corresponding to a maximum operating frequency of 83.3 MHz in pipelined mode. This is specified for the S6 speed grade under commercial temperature conditions (0°C to +70°C) with VDD = 3.3V ±150 mV. The device achieves this while maintaining 6 ns max clock-to-data (tCD2) latency.

Does the 70V3379S6PRF support both 3.3V and 2.5V I/O on the same device?

Yes, the 70V3379S6PRF supports independent 3.3V or 2.5V I/O operation on each port via dedicated OPTL and OPTR pins. Setting OPTL = VIH configures the left port's VDDQL and I/O thresholds for 3.3V operation; setting OPTR = VIL configures the right port's VDDQR and I/O for 2.5V operation. This enables mixed-voltage system integration without external level shifters.

How does the address counter function in the 70V3379S6PRF?

The 70V3379S6PRF includes independent 15-bit address counters for left (CNTENL/CNTRSTL) and right (CNTENR/CNTRSTR) ports. When CNTENX = LOW on the rising CLK edge, the counter advances automatically; CNTRSTX = LOW resets it to address 0. This enables burst-mode sequential access without external address generation - ideal for streaming applications like video frame buffering or packet payload handling.

What package options are available for the 70V3379S6PRF?

The 70V3379S6PRF is offered in three packages: 128-pin TQFP (PKG128), 208-pin fine-pitch BGA (BF208), and 256-pin BGA (BC256/BCG256). The "PRF" suffix in 70V3379S6PRF specifically denotes the 128-pin TQFP package with lead-free (RoHS-compliant) finish. Package dimensions and ball/lead pitch differ across variants and are documented in the official IDT datasheet.

Can the 70V3379S6PRF be used for depth expansion without additional logic?

Yes, the 70V3379S6PRF features dual chip enables (CE0X and CE1X per port) that allow straightforward depth expansion. For example, two devices can be stacked using shared CLK, address, and data buses, with CE0L/CE1L controlling one device and CE0R/CE1R controlling the other - no external decoding logic is required. Truth Table I in the datasheet defines the exact enable combinations for active/inactive states.