Renesas 70V3379S6PRF8

Overview

70V3379S6PRF8 from Integrated Device Technology is a high-speed 32K × 18-bit synchronous dual-port static RAM with pipelined output, 3.3V core supply, selectable 3.3V/2.5V I/O interface per port, and industrial-grade operation (–40°C to +85°C). It supports simultaneous left/right port access, 133MHz operation (7.5ns cycle time), and true dual-port memory cells for real-time data sharing in telecom switching fabric and network packet buffering.

For engineers reviewing the 70V3379S6PRF8 datasheet, 70V3379S6PRF8 pinout, 70V3379S6PRF8 application, or 70V3379S6PRF8 equivalent, key selection criteria include pipelined clock-to-data timing (≤6ns max), independent port voltage configuration via OPTL/OPTR, counter-enable address sequencing, and dual chip enable support for depth expansion without external logic.

Technical Context

The 70V3379S6PRF8 implements fully synchronous operation on both ports using rising-edge clocked registers for address, data, and control inputs-enabling minimal setup (1.8ns) and hold (0.7ns) times at 133MHz. Its self-timed write architecture decouples internal write pulse generation from clock edge timing, preserving fast cycle performance independent of clock duty cycle.

Each port features independent VDDQ power domains controlled by OPTL/OPTR pins, allowing mixed-voltage interfacing: one port at 3.3V LVTTL levels (VIH ≥ 2.0V), the other at 2.5V (VIH ≥ 1.7V), with corresponding VDDQL/VDDQR supplies. The address counter mode (enabled via CNTENL/CNTENR) provides automatic sequential addressing synchronized to CLK, eliminating external address increment logic.

Key Specifications

Pinout & Package

70V3379S6PRF8 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. Pin functions are validated per IDT DSC 4833/15 Rev. JULY 2019.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C1375BV33-100AXC and AS7C33160B-12JIN, the 70V3379S6PRF8 uniquely delivers configurable I/O voltage per port, pipelined 6 ns tCD2, and integrated address counter-enabling simpler, lower-latency designs in heterogeneous, high-speed embedded systems.

Availability

70V3379S6PRF8 is available at Aetrix Electronics and suitable for telecom switching fabric, network packet buffering, DSP co-processor memory, and industrial PLC data exchange requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 70V3379S6PRF8 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 70V3379S6PRF8 belongs to IDT's high-speed synchronous dual-port SRAM product line, engineered specifically for real-time data sharing between independent processors, ASICs, or FPGAs in bandwidth-constrained, low-latency systems.

FAQ

What is the maximum operating frequency supported by the 70V3379S6PRF8?

The 70V3379S6PRF8 supports a minimum clock cycle time of 12 ns, enabling operation up to 83.3 MHz under industrial temperature conditions (–40°C to +85°C). This is verified by its S6 speed grade specification and confirmed in AC Electrical Characteristics Table 11 of the IDT DSC 4833/15 datasheet. The device achieves this while maintaining guaranteed tCD2 ≤ 6 ns and tSA/tHA timing margins.

Does the 70V3379S6PRF8 support independent voltage configuration on each port?

Yes, the 70V3379S6PRF8 supports independent I/O voltage selection per port via OPTL and OPTR pins. Setting OPTL to VIH configures the left port for 3.3V LVTTL operation (VDDQL = 3.3V); setting it to VIL configures for 2.5V operation (VDDQL = 2.5V). The same applies independently to OPTR and VDDQR. This capability is explicitly defined in Truth Table II and DC Operating Conditions tables on pages 5–6 of the datasheet.

How does the address counter function work on the 70V3379S6PRF8?

The 70V3379S6PRF8 implements an internal 15-bit address counter per port, controlled by CNTENL/CNTENR and CNTRSTL/CNTRSTR. When CNTENX = VIL on the rising CLK edge, the counter advances to the next address regardless of CE0/CE1 state. CNTRSTX = VIL resets the counter to address 0. This eliminates external address increment logic in streaming applications-confirmed in Truth Table III and Timing Waveform Figures 13–14 of the datasheet.

What package type is used for the 70V3379S6PRF8?

The 70V3379S6PRF8 uses a 128-pin Thin Quad Plastic Flatpack (TQFP) package, designated PKG128 in IDT documentation. Its mechanical dimensions are 14 mm × 20 mm × 1.4 mm with 0.5 mm lead pitch. Pin configuration and thermal/mechanical details are fully specified in Figure 4833 drw 02a and Notes on page 4 of the DSC 4833/15 datasheet.

Is the 70V3379S6PRF8 suitable for industrial temperature applications?

Yes, the 70V3379S6PRF8 is qualified for industrial temperature operation from –40°C to +85°C, as confirmed in the "Recommended Operating Temperature and Supply Voltage" table (Table 4) and "AC Electrical Characteristics" table (Table 11) of the IDT DSC 4833/15 datasheet. The S6 speed grade is explicitly listed for commercial-only use, but the PRF8 suffix denotes the industrial-qualified TQFP variant per IDT ordering information on page 16.