Renesas 70V3569S5BF

Overview

70V3569S5BF from Integrated Device Technology is a high-speed 16K × 36-bit synchronous dual-port static RAM with pipelined output, 7.5 ns cycle time (133 MHz), true dual-port architecture enabling simultaneous access to the same memory location, and independent 3.3 V or 2.5 V I/O voltage selection per port-designed for high-bandwidth inter-processor communication in telecom line cards and packet buffer applications.

For engineers reviewing the 70V3569S5BF datasheet, 70V3569S5BF pinout, 70V3569S5BF application, or 70V3569S5BF equivalent, key selection criteria include pipelined read latency, byte-selectable write capability, counter-enabled burst addressing, industrial temperature support (−40°C to +85°C), and dual-chip-enable depth expansion without external logic.

Technical Context

The 70V3569S5BF implements fully synchronous operation on both ports using edge-triggered registers for address, data, and all control inputs-including R/W, CE0/CE1, BE0–BE3, ADS, CNTEN, and CNTRST-enabling precise timing control at 133 MHz. Its pipelined output mode introduces one-cycle latency between clock edge and valid data output, while self-timed write logic maintains fast cycle time independent of bus turnaround.

Each port supports independent I/O voltage configuration via OPTL/OPTR pins, allowing mixed-voltage interfacing: VDDQ can be set to 3.3 V (±150 mV) or 2.5 V (±125 mV) per port, while core VDD remains fixed at 3.3 V (±150 mV). The device integrates separate 9-bit byte enables (BE0–BE3) per port for fine-grained 36-bit bus matching and multiplexed data path compatibility.

Key Specifications

Pinout & Package

70V3569S5BF is packaged in a 208-pin Plastic Quad Flatpack (PQFP) with 0.5 mm lead pitch and 28 mm × 28 mm body size. Pin assignments are symmetrically organized for left (L) and right (R) ports, with dedicated VDD, VSS, VDDQL, VDDQR, OPTL, OPTR, and NC pins as defined in IDT DSC 4831 Rev. 15.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C1362BV33-133AXC and AS7C3316PFS-133BIN, the 70V3569S5BF uniquely combines industrial temperature range, per-port I/O voltage configurability, pipelined output timing, and integrated address counter - making it the only option supporting mixed-voltage burst-buffer architectures in carrier-class infrastructure.

Availability

70V3569S5BF is available at Aetrix Electronics and suitable for telecom packet buffering, FPGA co-processor interfacing, and industrial PLC data exchange requiring stable component supply across extended lifecycle programs.

Supply support for 70V3569S5BF 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, and RF power solutions for communications and computing markets.

The 70V3569S5BF belongs to IDT's high-speed synchronous dual-port SRAM product line, engineered specifically for deterministic, low-latency inter-processor communication in carrier-grade networking and real-time embedded systems.

FAQ

What is the maximum operating frequency of the 70V3569S5BF?

The 70V3569S5BF supports a minimum clock cycle time of 7.5 ns, corresponding to a maximum operating frequency of 133 MHz under industrial temperature conditions (−40°C to +85°C). This is validated across both ports simultaneously with pipelined output mode enabled and all timing parameters met per IDT DSC 4831 Rev. 15.

Does the 70V3569S5BF support independent I/O voltage levels on its two ports?

Yes, the 70V3569S5BF supports independent I/O voltage selection per port via OPTL and OPTR pins. Each port can be configured for either 3.3 V (±150 mV) or 2.5 V (±125 mV) operation by setting the respective OPT pin to VIH or VIL, while core VDD remains fixed at 3.3 V - enabling direct interfacing with mixed-voltage FPGAs or ASICs without external level shifters.

What is the function of the ADSL and ADSR pins on the 70V3569S5BF?

ADSL and ADSR are address strobe enable inputs for the left and right ports respectively. When asserted low (VIL), they cause the current address bus value to be latched into the internal address register on the next rising clock edge - overriding the internal address counter. This enables flexible mixing of external address control and counter-driven sequential access within the same operational mode of the 70V3569S5BF.

How does the address counter feature work on the 70V3569S5BF?

The 70V3569S5BF includes independent address counters per port controlled by CNTENL/CNTENR and CNTRSTL/CNTRSTR. When CNTEN is low, the counter advances on each rising CLK edge; CNTRST resets it to address 0. This allows burst-mode sequential access without external address generation logic - reducing control overhead in streaming applications such as packet buffering or test pattern playback.

What package type is used for the 70V3569S5BF?

The 70V3569S5BF is supplied in a 208-pin Plastic Quad Flatpack (PQFP) package with 0.5 mm lead pitch and 28 mm × 28 mm body dimensions. This package is explicitly designated in IDT documentation as DRG208 and supports standard surface-mount assembly processes with verified thermal and mechanical reliability for industrial applications.