Renesas 70V3379S5PRF

Overview

70V3379S5PRF from Integrated Device Technology is a high-speed 32K × 18-bit synchronous dual-port static RAM with pipelined output, true dual-port architecture enabling simultaneous left/right port access to the same memory location, 7.5 ns clock cycle time (133 MHz), and selectable 3.3 V or 2.5 V I/O interface per port. It supports industrial temperature range (−40°C to +85°C) and is used in real-time packet buffering, FPGA co-processor memory, and telecom line card data exchange.

For engineers reviewing the 70V3379S5PRF datasheet, 70V3379S5PRF pinout, 70V3379S5PRF application, or 70V3379S5PRF equivalent, key selection considerations include pipelined read latency, independent port voltage configuration (via OPTL/OPTR), counter-enabled burst addressing, dual chip enable for depth expansion, and low-power standby modes controlled by CE0/CE1.

Technical Context

The 70V3379S5PRF implements fully synchronous operation on both ports with all registers clocked on the rising edge of CLKL/CLKR. Its pipelined output mode introduces one-cycle latency between clock and valid data output (tCD2 ≤ 5 ns), while self-timed write logic decouples internal write pulse timing from clock edge transitions.

Each port features independent address strobe (ADSL/ADSR), counter enable (CNTENL/CNTENR), and counter reset (CNTRSTL/CNTRSTR) controls, allowing external address generation or internal sequential addressing without bus contention. Byte enables (UBL/LBL and UBR/LBR) support 9-bit-wide data masking per port, and dual chip enables (CE0X/CE1X) permit depth expansion without external logic.

Key Specifications

Pinout & Package

70V3379S5PRF is packaged 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 3.3 V supply; VDDQ pins must match OPT pin logic level (3.3 V if OPT = VIH, 2.5 V 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 CY7C1375BV33-5AC and AS7C331600B-10JIN, the 70V3379S5PRF delivers lower latency (7.5 ns vs. 10 ns), dual-voltage I/O per port, and integrated address counter - making it uniquely suited for FPGA-based streaming systems requiring deterministic burst access and mixed-signal voltage domains.

Availability

70V3379S5PRF is available at Aetrix Electronics and suitable for telecom infrastructure, FPGA-accelerated computing, real-time signal processing, and industrial motion control applications requiring stable component supply and long-term lifecycle support.

Supply support for 70V3379S5PRF 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 IDT70V3379 product line targets high-speed, low-latency memory subsystems in FPGA-based platforms and telecom equipment, emphasizing true dual-port concurrency, pipelined throughput, and flexible voltage interfacing.

FAQ

What is the maximum operating frequency of the 70V3379S5PRF?

The 70V3379S5PRF supports a minimum clock cycle time of 7.5 ns, corresponding to a maximum operating frequency of 133 MHz under industrial temperature conditions. This timing is guaranteed for pipelined read operations with tCD2 ≤ 5 ns and applies to both left and right ports independently when powered and configured per datasheet specifications.

Does the 70V3379S5PRF support independent I/O voltage levels on its two ports?

Yes, the 70V3379S5PRF supports independent I/O voltage selection per port via OPTL and OPTR pins. Setting OPTL = VIH configures the left port for 3.3 V I/O signaling (requiring VDDQL = 3.3 V), while OPTL = VIL configures it for 2.5 V (requiring VDDQL = 2.5 V); the right port operates identically but independently using OPTR and VDDQR.

How does the address counter function in the 70V3379S5PRF?

The 70V3379S5PRF includes independent 15-bit address counters for each port, controlled by CNTENL/CNTENR and CNTRSTL/CNTRSTR. When CNTENX = VIL on the rising CLKX edge, the counter increments automatically - enabling burst transfers without external address generation. ADSX can override counter output with external addresses at any time.

What package type is used for the 70V3379S5PRF?

The 70V3379S5PRF uses a 128-pin Thin Quad Plastic Flatpack (TQFP) with lead-free (RoHS-compliant) finish, designated by the "PRF" suffix in the part number. Its mechanical dimensions are 14 mm × 20 mm × 1.4 mm, with 0.5 mm pin pitch and standard gull-wing lead form for surface-mount assembly.

Can the 70V3379S5PRF operate in a depth-expanded configuration without external logic?

Yes, the 70V3379S5PRF supports depth expansion using only its dual chip enable signals (CE0X/CE1X) per port. By tying CE0A = CE0B = LOW and CE1A = CE1B = HIGH for selected devices, and reversing CE1 states for others, multiple 70V3379S5PRF units can be stacked vertically without additional decoding logic - as confirmed in the functional description and Figure 4 of the datasheet.