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Renesas 70V3379S5BFI8

Name: 70V3379S5BFI8
Brand: Renesas
SKU: 70V3379S5BFI8
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 70V3379S5BFI8

Manufacturer:: Renesas

Category:: Memory

Package:: 208-LFBGA

Datasheet:: 70V3379S5BFI8.pdf

Description:: IC SRAM 576KBIT PAR 208CABGA

Quantity:: RFQ Add To RFQ list

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Product details

Overview

70V3379S5BFI8 from Integrated Device Technology is a high-speed 32K × 18-bit synchronous dual-port static RAM with pipelined output mode, 3.3V core supply, and selectable 3.3V/2.5V I/O interface per port. It supports simultaneous read/write access on left and right ports, delivers 133MHz operation (7.5ns cycle time), and features integrated address counters with independent enable/reset per port for burst-mode data handling in telecom switching fabric and network packet buffering.

For engineers reviewing the 70V3379S5BFI8 datasheet, 70V3379S5BFI8 pinout, 70V3379S5BFI8 application, or 70V3379S5BFI8 equivalent, key selection criteria include pipelined clock-to-data timing (4.2ns max), dual-voltage I/O flexibility (3.3V/2.5V per port), industrial temperature support (−40°C to +85°C), and depth-expansion capability via dual chip enables without external logic.

Technical Context

The 70V3379S5BFI8 implements true dual-port SRAM cells with fully synchronous register-controlled inputs on both ports-address, data, and control signals all latch on the rising edge of CLKL/CLKR. Its self-timed write architecture decouples internal write pulse generation from clock edge timing, enabling minimal cycle time while maintaining setup/hold margins.

Each port includes independent OPT pins (OPTL/OPTR) that configure VDDQL/VDDQR supply voltage level (3.3V or 2.5V), allowing mixed-voltage system interfacing. The device integrates two 15-bit address counters (CNTENL/CNTRSTL and CNTENR/CNTRSTR) with asynchronous reset and synchronous enable, supporting auto-incrementing burst reads/writes without external address sequencing logic.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Organization	32K × 18 bits (576 Kbit total); enables 18-bit parallel data paths per port for high-throughput packet buffer applications.
Clock Cycle Time	7.5 ns minimum (133 MHz operation); defines maximum sustained throughput of 9.6 Gbps aggregate bandwidth across both ports.
Clock-to-Data Valid	4.2 ns max (pipelined mode); guarantees deterministic latency from CLK rise to valid Q output, critical for synchronous pipeline alignment.
Supply Voltages	VDD = 3.3 V ±150 mV (core); VDDQL/VDDQR = 3.3 V ±150 mV or 2.5 V ±125 mV (I/O); supports mixed-voltage SoC interconnects.
Operating Temperature	−40°C to +85°C (industrial grade); validated for deployment in base station RF units and industrial Ethernet switches.
Power Consumption	ISB3 = 6 mA typical (full standby, CMOS-level inputs); enables low-power idle states during traffic lulls in networking ASIC co-processors.
Input Timing Margins	tSA = 1.8 ns, tHA = 0.7 ns (at 133 MHz); allows robust PCB layout with moderate trace length matching for address/control nets.

Pinout & Package

70V3379S5BFI8 is packaged in a 208-pin fine-pitch Ball Grid Array (fpBGA, package code BF208) with 1.0 mm ball pitch and 17 mm × 17 mm body size. Pin functions are electrically symmetric between left and right ports, with dedicated VDD, VSS, VDDQ, and OPT pins per port to support independent I/O voltage configuration.

Pin/Terminal	Circuit Role	Design Meaning
CLKL / CLKR	Port-synchronous clock input	Rising-edge-triggered register clock for all inputs; enables full synchronization of address/data/control on each port independently.
A0L–A14L / A0R–A14R	15-bit address bus	Directly accesses 32K locations; supports external addressing or internal counter-driven sequential access when ADS = VIH.
I/O0L–I/O17L / I/O0R–I/O17R	18-bit bidirectional data bus	Full 18-bit parallel interface per port; byte enables (UBL/LBL, UBR/LBR) allow 9-bit sub-word writes without read-modify-write overhead.
OPTL / OPTR	I/O voltage select input	VIH = 3.3V I/O mode; VIL = 2.5V I/O mode; configures VDDQL/VDDQR power domain and input threshold levels independently per port.
CNTRSTL / CNTRSTR	Asynchronous counter reset	Active-low signal that forces internal address counter to zero immediately-no clock required-enabling deterministic burst restart.
CNTENL / CNTENR	Synchronous counter enable	When low on rising CLK, increments internal address counter; enables automatic address progression for sequential burst transfers.

Key Features

Feature	Design Value
True dual-port memory cells	Enables concurrent read and write operations to the same memory location from left and right ports-essential for real-time data exchange in FPGA-to-ASIC bridging.
Pipelined output mode	Delivers deterministic 4.2 ns clock-to-data delay with one-cycle latency, simplifying timing closure in high-speed synchronous systems like PCIe endpoint buffers.
Dual chip enables per port	CE0X and CE1X provide four discrete enable states (including power-down) per port, enabling seamless depth expansion of multiple devices without address decoding logic.
Independent I/O voltage selection	OPTL/OPTR pins allow left port to interface with 3.3V FPGA I/O while right port connects to 2.5V ASIC core logic-eliminating level shifters in heterogeneous SoC subsystems.
Integrated address counters	CNTRSTL/CNTENL and CNTRSTR/CNTENR support autonomous burst addressing, reducing host processor load in packet classification engines and DMA controllers.

Applications

Telecom Switching Fabric	Network Packet Buffering
Use Scenario: High-speed line cards in carrier-grade routers performing cut-through forwarding with sub-10ns latency requirements. IC Role / Device Role / Timing Role: Dual-port RAM serves as shared buffer between ingress and egress traffic managers, enabling zero-latency data handoff via simultaneous port access. Use Value: 7.5ns cycle time and 4.2ns clock-to-data guarantee deterministic pipeline timing for 10G/25G Ethernet packet processing.	Use Scenario: Deep packet inspection engines requiring temporary storage of fragmented IPv6 packets before reassembly. IC Role / Device Role / Timing Role: Left port accepts incoming packet fragments from MAC layer; right port feeds reassembled payload to security engine-both operating concurrently. Use Value: 32K × 18 organization provides 576 Kbit buffer space per channel, sufficient for multi-megabyte TCP segments at line rate.
FPGA-to-ASIC Co-Processing Interface	Industrial Ethernet Switch Controller
Use Scenario: Real-time motion control system where FPGA handles servo loop timing and ASIC performs trajectory planning. IC Role / Device Role / Timing Role: Acts as low-latency shared memory between FPGA (left port) and ARM-based ASIC (right port), synchronized via independent clocks. Use Value: Independent OPT pins allow FPGA to run at 3.3V I/O while ASIC operates at 2.5V, eliminating external level translators and reducing BOM cost.	Use Scenario: DIN-rail mounted managed switch operating in factory environments with ambient temperatures up to +85°C. IC Role / Device Role / Timing Role: Stores VLAN configuration tables and MAC address lookup entries accessible by both management CPU (right port) and packet forwarding engine (left port). Use Value: Industrial temperature rating (−40°C to +85°C) and ISB3 standby current of 6 mA ensure reliable operation during thermal cycling and power-loss recovery sequences.

Telecom Switching Fabric

Network Packet Buffering

Use Scenario: High-speed line cards in carrier-grade routers performing cut-through forwarding with sub-10ns latency requirements.

IC Role / Device Role / Timing Role: Dual-port RAM serves as shared buffer between ingress and egress traffic managers, enabling zero-latency data handoff via simultaneous port access.

Use Value: 7.5ns cycle time and 4.2ns clock-to-data guarantee deterministic pipeline timing for 10G/25G Ethernet packet processing.

Use Scenario: Deep packet inspection engines requiring temporary storage of fragmented IPv6 packets before reassembly.

IC Role / Device Role / Timing Role: Left port accepts incoming packet fragments from MAC layer; right port feeds reassembled payload to security engine-both operating concurrently.

Use Value: 32K × 18 organization provides 576 Kbit buffer space per channel, sufficient for multi-megabyte TCP segments at line rate.

FPGA-to-ASIC Co-Processing Interface

Industrial Ethernet Switch Controller

Use Scenario: Real-time motion control system where FPGA handles servo loop timing and ASIC performs trajectory planning.

IC Role / Device Role / Timing Role: Acts as low-latency shared memory between FPGA (left port) and ARM-based ASIC (right port), synchronized via independent clocks.

Use Value: Independent OPT pins allow FPGA to run at 3.3V I/O while ASIC operates at 2.5V, eliminating external level translators and reducing BOM cost.

Use Scenario: DIN-rail mounted managed switch operating in factory environments with ambient temperatures up to +85°C.

IC Role / Device Role / Timing Role: Stores VLAN configuration tables and MAC address lookup entries accessible by both management CPU (right port) and packet forwarding engine (left port).

Use Value: Industrial temperature rating (−40°C to +85°C) and ISB3 standby current of 6 mA ensure reliable operation during thermal cycling and power-loss recovery sequences.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
CY7C1375BV33-167AXC	167 MHz max (6 ns cycle), 32K × 18, 3.3V only I/O, no OPT pin or dual-voltage support	Lacks independent I/O voltage selection; requires external level shifters in mixed-voltage systems	Select when maximum speed (167 MHz) is prioritized over I/O flexibility and industrial temp range is not required.
AS7C33256B-15JIN	15 ns async access, 32K × 18, 3.3V core/I/O, no pipelining or address counters	No synchronous clocking, no burst addressing capability-requires full external address generation logic	Select for cost-sensitive legacy designs where synchronous timing and counter features are unnecessary.

Compared with CY7C1375BV33-167AXC and AS7C33256B-15JIN, the 70V3379S5BFI8 uniquely combines industrial temperature support, per-port I/O voltage configurability, and integrated address counters-making it optimal for new designs requiring mixed-voltage interoperability and autonomous burst transfers.

Availability

70V3379S5BFI8 is available at Aetrix Electronics and suitable for telecom switching fabric, network packet buffering, FPGA-to-ASIC co-processing interface, and industrial Ethernet switch controller applications requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 70V3379S5BFI8 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 70V3379 product line delivers synchronous dual-port SRAMs optimized for low-latency, high-bandwidth data exchange in telecom infrastructure, network processors, and real-time embedded systems requiring deterministic timing and flexible I/O interfacing.

FAQ

What is the maximum operating frequency of the 70V3379S5BFI8?

The 70V3379S5BFI8 supports a maximum operating frequency of 133 MHz, corresponding to a minimum clock cycle time of 7.5 ns. This is validated across the industrial temperature range (−40°C to +85°C) and applies to both left and right ports under pipelined read/write conditions with proper setup/hold timing margins.

Does the 70V3379S5BFI8 support independent I/O voltage levels on its two ports?

Yes, the 70V3379S5BFI8 supports independent I/O voltage selection per port via OPTL and OPTR pins. Setting OPTL to VIH configures the left port for 3.3V I/O operation (VDDQL = 3.3V), while setting OPTR to VIL configures the right port for 2.5V I/O operation (VDDQR = 2.5V)-enabling direct interfacing with heterogeneous voltage domains without external level shifters.

How does the address counter function in the 70V3379S5BFI8?

The 70V3379S5BFI8 integrates two independent 15-bit address counters-one for each port-with dedicated CNTENL/CNTRSTL (left) and CNTENR/CNTRSTR (right) control signals. When CNTENX is low on the rising CLK edge, the counter advances; CNTRSTX asynchronously resets it to zero. This enables autonomous burst addressing without external address generation logic.

What package type is used for the 70V3379S5BFI8?

70V3379S5BFI8 uses a 208-pin fine-pitch Ball Grid Array (fpBGA) package with 1.0 mm ball pitch and 17 mm × 17 mm body dimensions (package code BF208). This package supports high-density routing and thermal performance suitable for industrial and telecom applications.

Is the 70V3379S5BFI8 rated for industrial temperature operation?

Yes, the 70V3379S5BFI8 is qualified for industrial temperature operation from −40°C to +85°C. This rating is confirmed in the "Recommended Operating Temperature and Supply Voltage" table (Table 4) and applies to all speed grades including the S5 variant, making it suitable for deployment in base stations, industrial gateways, and outdoor networking equipment.

70V3379S5BFI8 Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

Series:: -

Package/Case:: 208-LFBGA

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Programmable:: Not Verified

Memory Type:: Volatile

Memory Format:: SRAM

Technology:: SRAM - Dual Port, Synchronous

Memory Size:: 576Kbit

Memory Organization:: 32K x 18

Memory Interface:: Parallel

Clock Frequency:: -

Write Cycle Time - Word, Page:: -

Access Time:: 5 ns

Voltage - Supply:: 3.15V ~ 3.45V

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 208-CABGA (15x15)

70V3379S5BFI8 FAQ

1.How can I place an order for 70V3379S5BFI8 through Aetrix?

Please submit a Request for Quotation (RFQ) for 70V3379S5BFI8 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for 70V3379S5BFI8 reliable?

The price and inventory of 70V3379S5BFI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 70V3379S5BFI8 is usually 5 days.

3.What payment methods are accepted for 70V3379S5BFI8?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 70V3379S5BFI8 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 70V3379S5BFI8?

70V3379S5BFI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 70V3379S5BFI8 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for 70V3379S5BFI8?

For technical support, including 70V3379S5BFI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 70V3379S5BFI8 requirements.

6.How does Aetrix verify that 70V3379S5BFI8 is sourced from the original manufacturer or authorized distributors?

All 70V3379S5BFI8 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 70V3379S5BFI8 meets industry standards.

7.What is the process for return or replacement of 70V3379S5BFI8?

All 70V3379S5BFI8 units undergo pre-shipment inspection (PSI). If there is an issue with 70V3379S5BFI8, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The 70V3379S5BFI8 part is unused and in its original packaging.

Return procedure for 70V3379S5BFI8:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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