Renesas 70V3389S5BFI8

Overview

70V3389S5BFI8 from Integrated Device Technology is a high-speed 64K × 18-bit synchronous dual-port static RAM with pipelined output, 5 ns max clock-to-data access, 7.5 ns cycle time (133 MHz), and independent 3.3 V or 2.5 V I/O voltage selection per port. It enables simultaneous read/write access to the same memory location in real-time signal processing systems requiring deterministic latency.

For engineers reviewing the 70V3389S5BFI8 datasheet, 70V3389S5BFI8 pinout, 70V3389S5BFI8 application, or 70V3389S5BFI8 equivalent, this device supports depth/width expansion without external logic, features asynchronous OE and address counter control, and delivers 9.6 Gbps aggregate bandwidth across two fully synchronous ports operating at industrial temperature range (–40°C to +85°C).

Technical Context

The 70V3389S5BFI8 implements true dual-port SRAM cells with registered 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 timing from clock edges, enabling minimal cycle time while maintaining setup/hold margins.

Each port supports independent VDDQ selection (3.3 V or 2.5 V) via OPTL/OPTR pins, with corresponding VIH/VIL thresholds and DC electrical specs. The address counter mode-enabled by CNTENL/CNTENR and reset by CNTRSTL/CNTRSTR-operates independently of chip enable states and allows burst sequential access without external address generation.

Key Specifications

Pinout & Package

70V3389S5BFI8 is housed in a 208-pin fpBGA (BF208) package with 17 mm × 17 mm footprint and 1.0 mm ball pitch. All VDD pins require 3.3 V supply; VDDQL/VDDQR must match OPTL/OPTR logic level (3.3 V if VIH, 2.5 V if 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 CY7C1375BV33-5BC and IS61WV6418BLL-5BLI, the 70V3389S5BFI8 uniquely supports per-port I/O voltage selection and integrated address counters-reducing FPGA resource usage and eliminating level-shift components in heterogeneous voltage systems.

Availability

70V3389S5BFI8 is available at Aetrix Electronics and suitable for telecom infrastructure, real-time DSP, industrial motion control, and automotive ADAS applications requiring stable component supply, long-term lifecycle support, and industrial-grade reliability.

Supply support for 70V3389S5BFI8 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 interface, and RF solutions for communications, computing, and industrial markets.

The 70V3389S5BFI8 belongs to IDT's high-speed synchronous dual-port SRAM product line, engineered specifically for deterministic-latency inter-processor communication in real-time embedded systems demanding simultaneous multi-port access and flexible voltage interfacing.

FAQ

What is the maximum operating frequency of the 70V3389S5BFI8?

The 70V3389S5BFI8 supports a minimum clock cycle time of 7.5 ns, enabling operation at 133 MHz. This is guaranteed across the full industrial temperature range (–40°C to +85°C) and applies to both ports simultaneously under specified VDD and VDDQ conditions. The device achieves this with pipelined output architecture and registered inputs that minimize setup/hold timing constraints.

Does the 70V3389S5BFI8 support independent I/O voltage levels on each port?

Yes, the 70V3389S5BFI8 supports independent I/O voltage selection per port via OPTL and OPTR pins. Setting OPTL to VIH (3.3 V) configures VDDQL for 3.3 V operation; setting it to VIL (0 V) configures VDDQL for 2.5 V. The same applies to OPTR/VDDQR. This allows the left port to interface with 3.3 V logic while the right port connects to 2.5 V logic-no external level shifters required.

How does the address counter function work on the 70V3389S5BFI8?

The 70V3389S5BFI8 implements independent 16-bit address counters on each port, controlled by CNTENL/CNTENR and CNTRSTL/CNTRSTR. When CNTEN = VIL on the rising CLK edge, the counter advances regardless of CE or OE state. ADS = VIH disables external address loading, allowing continuous sequential access-ideal for burst transfers in video or DSP pipelines without CPU intervention.

What package type is used for the 70V3389S5BFI8?

The 70V3389S5BFI8 is packaged in a 208-pin fine-pitch Ball Grid Array (fpBGA), designated BF208. The package measures 17 mm × 17 mm with a 1.0 mm ball pitch and is RoHS-compliant. It is designed for standard surface-mount assembly and provides thermal and electrical performance suitable for industrial and automotive applications.

What is the power consumption profile of the 70V3389S5BFI8 in standby mode?

In full standby mode (both ports disabled with CMOS-level inputs), the 70V3389S5BFI8 draws as little as 6 mA typical (15 mA max). With one port active and outputs disabled, standby current is 180 mA typical (260 mA max) at 133 MHz. These values reflect the device's dual CE architecture-asserting CE0 = VIH or CE1 = VIL powers down internal circuitry to reduce static power without affecting the other port.