Renesas 70V3379S5PRF8

Overview

70V3379S5PRF8 from Integrated Device Technology is a high-speed 32K × 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 left/right port access to the same memory location, delivers 4.2ns clock-to-data (pipelined), and operates at 133MHz with 7.5ns cycle time for 9.6 Gbps bandwidth in telecom switching and packet buffering applications.

For engineers reviewing the 70V3379S5PRF8 datasheet, 70V3379S5PRF8 pinout, 70V3379S5PRF8 application, or 70V3379S5PRF8 equivalent, key selection criteria include its dual-voltage I/O flexibility (via OPTL/OPTR), counter-enable/reset functionality for burst address generation, industrial temperature support (−40°C to +85°C), and compatibility with depth-expansion configurations using dual chip enables CE0/CE1 without external logic.

Technical Context

The 70V3379S5PRF8 implements true dual-port SRAM cells with fully synchronous operation on both ports, where all control, address, and data inputs are registered on the rising edge of CLKL/CLKR. Its pipelined output mode introduces one-cycle latency between clock and valid data, enabling deterministic timing at 133MHz.

Each port features independent voltage selection via OPTL/OPTR pins, allowing mixed-mode operation (e.g., left port at 3.3V, right port at 2.5V), while VDD remains fixed at 3.3V. The integrated address counter-enabled by CNTENL/CNTENR and reset by CNTRSTL/CNTRSTR-supports burst-mode sequential access without external address sequencing logic.

Key Specifications

Pinout & Package

70V3379S5PRF8 is packaged in a 128-pin Thin Quad Plastic Flatpack (TQFP), body size 14 mm × 20 mm × 1.4 mm, with 0.5 mm lead pitch. All VDD pins require 3.3V supply; VDDQL/VDDQR must match selected I/O voltage (3.3V if OPTX = VIH, 2.5V if OPTX = 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 AS7C33256PFS-15JIN, the 70V3379S5PRF8 uniquely combines industrial temperature support, per-port I/O voltage selection, and integrated address counter-all within a 7.5 ns cycle time-making it optimal for new designs requiring mixed-voltage interoperability and burst-mode efficiency.

Availability

70V3379S5PRF8 is available at Aetrix Electronics and suitable for telecom infrastructure, industrial automation, and broadcast video equipment requiring stable component supply, long-term lifecycle assurance, and industrial-grade reliability.

Supply support for 70V3379S5PRF8 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, specializes in high-performance timing, memory interface, and RF solutions for communications and computing markets.

The 70V3379S5PRF8 belongs to IDT's high-speed synchronous dual-port SRAM product line, designed specifically for low-latency, concurrent-access applications in network switches, baseband units, and real-time control systems.

FAQ

What is the maximum operating frequency of the 70V3379S5PRF8?

The 70V3379S5PRF8 supports a minimum clock cycle time of 7.5 ns, corresponding to a maximum operating frequency of 133 MHz in pipelined mode. This is guaranteed across the industrial temperature range (−40°C to +85°C) and applies to both left and right ports simultaneously under specified supply and loading conditions.

Does the 70V3379S5PRF8 support mixed-voltage operation between its two ports?

Yes, the 70V3379S5PRF8 supports independent I/O voltage selection per port via OPTL and OPTR pins. Setting OPTL = VIH configures the left port for 3.3V I/O levels (requiring VDDQL = 3.3V), while OPTR = VIL configures the right port for 2.5V I/O levels (requiring VDDQR = 2.5V). This enables direct interfacing with heterogeneous logic families without external level shifters.

How does the address counter function in the 70V3379S5PRF8?

The 70V3379S5PRF8 integrates a 15-bit address counter per port, controlled by CNTENL/CNTENR and CNTRSTL/CNTRSTR. When CNTENX = LOW on the rising edge of CLKX, the counter advances automatically; a pulse on CNTRSTX resets it to address 0. This enables burst-mode sequential access without external address generation logic-ideal for packet or frame buffering.

What package type is used for the 70V3379S5PRF8?

The 70V3379S5PRF8 uses a 128-pin Thin Quad Plastic Flatpack (TQFP) package (PKG128), measuring 14 mm × 20 mm × 1.4 mm with 0.5 mm lead pitch. This RoHS-compliant, surface-mount package provides robust thermal performance and is compatible with standard reflow soldering processes used in high-volume manufacturing.

Can the 70V3379S5PRF8 be used in depth-expansion configurations without additional logic?

Yes, the 70V3379S5PRF8 features dual chip enables (CE0X and CE1X) per port, enabling straightforward depth expansion. For example, two devices can be stacked using shared CLK, R/W, and address lines, with CE0L/CE1L controlling the first device and CE0R/CE1R controlling the second-no external decoding logic is required to manage bank selection.