Renesas 71V3576S150PFGI

Overview

71V3576S150PFGI from IDT is a 128K × 36-bit, 3.3V synchronous SRAM with pipelined outputs, burst counter, and single-cycle deselect-designed for high-speed cache and buffer applications in networking and telecom systems. It delivers 150MHz operation (6.7ns clock cycle), 3.8ns clock-to-data access, and supports linear/interleaved burst modes via LBO input.

For engineers reviewing the 71V3576S150PFGI datasheet, 71V3576S150PFGI pinout, 71V3576S150PFGI application, or 71V3576S150PFGI equivalent, this page provides verified timing parameters, JEDEC-standard 100-pin TQFP package details, industrial-grade temperature support (–40°C to +85°C), and functional alternatives for memory subsystem design.

Technical Context

The 71V3576S150PFGI implements a synchronous architecture with registered address, data, and control inputs triggered on the rising edge of CLK. Its internal burst counter generates four consecutive addresses from a single input, enabling pipelined read/write bursts with ADV, ADSP, and ADSC coordination.

Burst sequencing is determined by the static LBO pin state (linear vs. interleaved), while self-timed writes are controlled by GW, BWE, and BW1–BW4 byte enables. Power management includes asynchronous ZZ-driven sleep mode (IZZ ≤ 35mA) and CMOS standby (ISB1 ≤ 35mA).

Key Specifications

Pinout & Package

71V3576S150PFGI is housed in a JEDEC-standard 100-pin plastic thin quad flatpack (TQFP), measuring 14 mm × 20 mm, with 0.5 mm lead pitch and exposed thermal pad (not electrically connected). Pin 1 is marked by a dot or beveled corner per standard orientation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 71V3576S150PFG and 71V3578S150PFGI, the 71V3576S150PFGI uniquely combines 36-bit data width, 150MHz performance, and industrial temperature qualification-making it the sole option for new designs requiring all three attributes simultaneously.

Availability

71V3576S150PFGI is available at Aetrix Electronics and suitable for high-speed network buffering, telecom caching, industrial data logging, and test equipment memory applications requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 71V3576S150PFGI 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 fabless semiconductor company specializing in high-performance timing, memory, and RF solutions, now part of Renesas Electronics since 2019.

The 71V3576/78 family was designed specifically for low-latency, burst-capable memory subsystems in communications infrastructure-emphasizing pipelined timing, industrial reliability, and flexible write granularity.

FAQ

What is the maximum clock frequency supported by the 71V3576S150PFGI?

The 71V3576S150PFGI is rated for 150 MHz operation, corresponding to a minimum clock cycle time (tCYC) of 6.7 ns. This speed is guaranteed over the full industrial temperature range (–40°C to +85°C) and 3.3V ±5% supply conditions, with tCD = 3.8 ns clock-to-data delay measured under worst-case conditions.

Does the 71V3576S150PFGI support both linear and interleaved burst modes?

Yes, the 71V3576S150PFGI supports both burst modes via the LBO (Linear Burst Order) pin. When LBO is driven LOW, the device uses linear addressing (00→01→10→11); when HIGH, it uses interleaved order (00→01→11→10). LBO is a static input and must remain stable during burst operation.

How does the 71V3576S150PFGI handle power-down and sleep modes?

The 71V3576S150PFGI offers two low-power states: CMOS standby (ISB1 ≤ 35 mA) when deselected, and full sleep mode (IZZ ≤ 35 mA) activated by driving ZZ HIGH. Sleep mode gates the internal clock and preserves data; recovery time (tZZR) is 100 ns minimum after ZZ returns LOW.

What is the function of the ADV, ADSP, and ADSC pins on the 71V3576S150PFGI?

ADV advances the internal burst counter during burst reads/writes. ADSP (Address Status from Processor) and ADSC (Address Status from Cache Controller) are synchronous inputs that load the address register on their falling edge-both are active LOW and function identically for address latching, enabling interoperability with diverse host controllers.

Can the 71V3576S150PFGI perform partial-word writes?

Yes, the 71V3576S150PFGI supports byte-selectable writes using BWE and BW1–BW4. With BWE LOW, individual BWx signals enable writing to four 9-bit subwords (e.g., BW1 controls I/O0–I/O7 and I/OP1). Any active BWx disables all outputs, ensuring bus integrity during partial updates.