Renesas 6116SA25SOGI

Overview

The 6116SA25SOGI from Renesas Electronics is a 16K-bit (2K × 8) high-speed CMOS static RAM with 25ns maximum access time, TTL-compatible I/O, and industrial temperature operation (–40°C to +85°C). It features static asynchronous operation (no refresh or clock required), low-power standby mode (40mA typical ICC2, 2mA ISB1), and 24-pin SOIC packaging - used in embedded controllers, instrumentation data buffers, and legacy industrial PLC memory expansion.

For engineers reviewing the 6116SA25SOGI datasheet, 6116SA25SOGI pinout, 6116SA25SOGI application, or 6116SA25SOGI equivalent, key selection considerations include its 25ns read cycle time, industrial-grade reliability, TTL-level interface compatibility, standby current performance, and SOIC-24 footprint suitability for space-constrained PCBs.

Technical Context

This device implements a fully static 128 × 128 memory array with address decoder, I/O control, and input data circuitry - all built using high-reliability CMOS technology that eliminates alpha-particle soft errors. Its asynchronous architecture requires no clocks or refresh cycles, and chip select (CS) directly controls power state transitions between active and TTL/CMOS-level standby modes.

Operation relies on three control signals: CS (chip select), WE (write enable), and OE (output enable), supporting three distinct functional modes - standby (CS HIGH), read (CS & OE LOW, WE HIGH), and write (CS & WE LOW). All timing parameters - including tRC (read cycle), tAA (address access), and tWHZ (write high-to-high-Z) - are guaranteed across the full industrial temperature range.

Key Specifications

Pinout & Package

Package: 24-pin SOIC (gull-wing), 300-mil width (PSG24 code), RoHS-compliant and green-qualified per ordering information.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar static RAM applications.

Compared with CY62167EV30LL-45ZSXI and AS6C1008-25ZIN, the 6116SA25SOGI offers proven 5V TTL interoperability and minimal board-space footprint in legacy industrial systems - making it optimal for repair, replacement, and long-lifecycle maintenance where electrical and mechanical compatibility are mandatory.

Availability

The 6116SA25SOGI is available at Aetrix Electronics and suitable for programmable logic controllers, embedded instrumentation, legacy HMI displays, avionics maintenance terminals, and industrial data loggers requiring stable component supply over extended product lifecycles.

Supply support for 6116SA25SOGI 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

Renesas Electronics Corporation is a global semiconductor leader delivering microcontrollers, analog, power, and memory solutions for automotive, industrial, infrastructure, and IoT applications.

The 6116SA25SOGI belongs to Renesas' legacy CMOS SRAM product line, designed specifically for industrial and military applications demanding high reliability, wide temperature operation, and direct TTL-system integration without voltage translation.

FAQ

What is the maximum guaranteed access time for the 6116SA25SOGI?

The 6116SA25SOGI has a maximum guaranteed access time (tAA) of 25ns under industrial temperature conditions (–40°C to +85°C) and VCC = 5.0V ±10%. This value is production-tested and specified in the AC Electrical Characteristics table of the Renesas datasheet Rev. Jul.17.20. The 6116SA25SOGI achieves this timing without requiring external wait-state generation in compatible 5V microcontroller systems.

Does the 6116SA25SOGI require a refresh signal or clock input?

No, the 6116SA25SOGI is a fully static RAM and requires no refresh signal or clock input. Its internal circuitry maintains data indefinitely as long as power is applied and CS remains asserted (LOW). This eliminates the need for refresh controllers or timing-critical clock routing - a key advantage over DRAM in simple embedded systems. The 6116SA25SOGI operates purely asynchronously using CS, WE, and OE control lines.

What package type and pin count does the 6116SA25SOGI use?

The 6116SA25SOGI uses a 24-pin Small Outline Integrated Circuit (SOIC) package with gull-wing leads and 300-mil body width (package code PSG24). It is RoHS-compliant and green-qualified per Renesas ordering documentation. This surface-mount package enables high-density PCB layouts and is compatible with standard reflow soldering processes used in industrial electronics manufacturing.

Can the 6116SA25SOGI interface directly with 5V TTL logic families?

Yes, the 6116SA25SOGI features fully TTL-compatible inputs and outputs: VIH(min) = 2.2V, VIL(max) = 0.8V, VOH(min) = 2.4V (at IOH = –4mA), and VOL(max) = 0.4V (at IOL = 8mA). These specifications ensure reliable interfacing with 74LS, 74ALS, and other standard 5V TTL devices without level shifters - a critical feature for maintaining signal integrity in legacy industrial control systems using the 6116SA25SOGI.

What is the standby current consumption of the 6116SA25SOGI?

The 6116SA25SOGI offers two standby modes: TTL-level standby (ISB = 40mA max when CS > VIH) and CMOS-level standby (ISB1 = 2mA max when CS > VHC and inputs held at valid logic levels). The lower ISB1 mode enables significant power savings in battery-backed or energy-sensitive applications. Both values are guaranteed across the full industrial temperature range and are documented in Table 8 of the Renesas 6116SA/LA datasheet.