Renesas 71V67703S75PFG8

Overview

71V67703S75PFG8 from IDT is a 256K × 36-bit (9-Mbit), 3.3V synchronous SRAM with flow-through outputs, 7.5ns access time at 117MHz, single-cycle deselect, and burst-mode operation. It features global/byte write control, LBO-selectable linear/interleaved burst order, and ZZ-controlled power-down - deployed in high-speed networking packet buffers and real-time DSP data caches.

For engineers reviewing the 71V67703S75PFG8 datasheet, 71V67703S75PFG8 pinout, 71V67703S75PFG8 application, or 71V67703S75PFG8 equivalent, key selection criteria include burst timing compliance, 3.3V I/O voltage tolerance, TQFP-100 package footprint, and industrial-grade temperature support up to +85°C.

Technical Context

This SRAM implements a synchronous, clock-driven architecture with registered address/data inputs and unregistered (flow-through) outputs. Its internal burst counter advances on ADV=LOW and supports four-word bursts defined by LBO state - linear (LBO=LOW) or interleaved (LBO=HIGH) - with no output register delay between clock edge and valid data.

The device uses dual supply rails: 3.3V ±5% for core logic (VDD) and separate 3.3V ±5% for I/O (VDDQ), enabling clean signal integrity. Power management includes asynchronous ZZ sleep mode (IZZ ≤ 70mA) and synchronous standby modes (ISB1 ≤ 70mA), all validated across –40°C to +85°C industrial temperature range.

Key Specifications

Pinout & Package

71V67703S75PFG8 is packaged in a JEDEC-standard 100-pin TQFP (PKG100), 14mm × 20mm body, with 0.5mm pitch and exposed thermal pad. Pinout follows the 256K × 36 configuration per IDT document 5309 drw 02a.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar synchronous SRAM applications.

Compared with CY7C1373KV18 and AS7C36256PFSIG, the 71V67703S75PFG8 uniquely delivers 7.5ns flow-through timing in TQFP-100 with configurable burst order and ZZ sleep - making it optimal for new industrial and telecom designs demanding latency determinism and power-aware operation.

Availability

71V67703S75PFG8 is available at Aetrix Electronics and suitable for high-speed packet buffering, real-time DSP caching, and industrial PLC motion control requiring stable component supply across extended temperature ranges.

Supply support for 71V67703S75PFG8 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

IDT (Integrated Device Technology) is a semiconductor company specializing in timing, memory interface, RF, and sensor solutions, now part of Renesas Electronics since 2019.

The 71V67703 family targets high-performance embedded systems requiring deterministic memory access - designed specifically for networking, telecom infrastructure, and real-time control applications where burst bandwidth and low-latency predictability are critical.

FAQ

What is the maximum clock frequency supported by the 71V67703S75PFG8?

The 71V67703S75PFG8 supports up to 117MHz clock frequency, corresponding to a minimum clock cycle time (tCYC) of 8.5ns and guaranteed 7.5ns access time (tCD). This rating is validated across the full industrial temperature range (–40°C to +85°C) and 3.3V ±5% supply conditions.

Does the 71V67703S75PFG8 support both linear and interleaved burst modes?

Yes, the 71V67703S75PFG8 supports both burst modes via the LBO (Linear/Interleaved Burst Order) pin. When LBO is driven LOW, the device executes linear burst (00→01→10→11); when HIGH, it executes interleaved burst (00→01→11→10). LBO is a static DC input and must remain stable during operation.

What is the function of the ZZ pin on the 71V67703S75PFG8?

The ZZ pin on the 71V67703S75PFG8 is an asynchronous sleep mode input. When driven HIGH, it internally gates the CLK signal and reduces supply current to ≤70mA (IZZ), while guaranteeing data retention. No power supply sequencing is required, and the device resumes normal operation within tZZR ≤ 100ns after ZZ returns LOW.

How many address pins does the 71V67703S75PFG8 have, and what memory size do they support?

The 71V67703S75PFG8 has 19 address pins (A0–A18), configured for 256K × 36-bit organization (requiring A0–A17). A18 is NC in this configuration. The same pinout supports 512K × 18-bit variants (e.g., 71V67903) where A18 becomes active and BW3/BW4 are NC.

Is the 71V67703S75PFG8 compatible with 3.3V-only system designs?

Yes, the 71V67703S75PFG8 requires two 3.3V supplies: VDD = 3.3V ±5% for core logic and VDDQ = 3.3V ±5% for I/O. Both rails are independent, allowing noise isolation. Input thresholds meet 3.3V logic levels (VIH ≥ 2.0V, VIL ≤ 0.8V), and outputs drive to VOH ≥ 2.4V / VOL ≤ 0.4V under load.