Renesas 71024S12TYG

Overview

71024S12TYG from Renesas Electronics is a 128K × 8-bit high-speed CMOS static RAM with 12 ns access time, 5 V single-supply operation, TTL-compatible I/O, and dual chip select plus output enable control. It operates across commercial temperature range (0°C to +70°C) in 32-pin 300-mil plastic SOJ package and serves as fast, non-refreshing memory in embedded controllers and data acquisition systems.

For engineers reviewing the 71024S12TYG datasheet, 71024S12TYG pinout, 71024S12TYG application, or 71024S12TYG equivalent, key selection criteria include guaranteed 12 ns read cycle time, low 40 mA standby current (ISB), bidirectional TTL-compatible I/O, and industrial-grade availability via variant 71024S12TYGI.

Technical Context

The 71024S12TYG implements fully static asynchronous architecture-no clocks or refresh cycles required-and uses high-reliability CMOS process for stable operation at 5.0 V ±10%. Its dual chip select (CS1, CS2) enables hierarchical memory mapping, while OE pin supports fast 6 ns output enable timing independent of address changes.

Address access time (tAA ≤12 ns), chip select access time (tACS ≤12 ns), and read cycle time (tRC =12 ns) are all production-tested and guaranteed across commercial temperature range. Input leakage (|ILI| ≤5 µA) and output leakage (|ILO| ≤5 µA) ensure robust noise immunity in mixed-signal environments.

Key Specifications

Pinout & Package

71024S12TYG is housed in a 32-pin Plastic Small-Outline J-Lead (SOJ) package measuring 300 mils wide (PJG32). The package supports reflow soldering and provides mechanical stability for board-level vibration resistance.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed parallel SRAM applications.

Compared with CY62128EV30LL-45ZSXIT and AS6C1008-12ZIN, the 71024S12TYG delivers verified 12 ns performance at 5 V in the compact 300-mil SOJ package, making it optimal for space-constrained commercial-grade designs requiring drop-in compatibility with legacy 5 V buses.

Availability

71024S12TYG is available at Aetrix Electronics and suitable for industrial PLC data buffering, legacy microcontroller SRAM expansion, and medical instrument data acquisition requiring stable component supply and long-term lifecycle support.

Supply support for 71024S12TYG 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, and IoT applications.

The 71024S12TYG belongs to Renesas' legacy high-speed parallel SRAM product line, designed specifically for 5 V embedded systems requiring deterministic, low-latency memory access without refresh overhead.

FAQ

What is the guaranteed access time for 71024S12TYG?

The 71024S12TYG has a production-tested and guaranteed address access time (tAA) of ≤12 ns under commercial temperature conditions (0°C to +70°C) and 5.0 V ±10% supply. This value is specified in Table 9 of the Renesas datasheet and applies to both read and write cycles when CS1 and CS2 are properly asserted.

Does 71024S12TYG require a clock or refresh circuit?

No, the 71024S12TYG uses fully static CMOS architecture and requires no clock input or periodic refresh cycles. All operations are asynchronous and controlled solely by address, CS1, CS2, WE, and OE signals - eliminating timing-critical refresh overhead in real-time systems.

What package type and dimensions does 71024S12TYG use?

The 71024S12TYG is packaged in a 32-pin Plastic Small-Outline J-Lead (SOJ) with 300-mil body width (package code PJG32). Its JEDEC-standard footprint features gull-wing leads spaced at 0.050 inch pitch and is qualified for reflow soldering per J-STD-020.

Can 71024S12TYG operate with 3.3 V supply?

No, the 71024S12TYG is specified only for 4.5 V to 5.5 V operation. Its TTL-compatible inputs and outputs, internal logic thresholds, and DC characteristics (e.g., VIH = 2.2 V min) are designed exclusively for 5 V systems. Using 3.3 V will result in undefined behavior and non-compliance with datasheet parameters.

How does the dual chip select (CS1/CS2) function in 71024S12TYG?

In the 71024S12TYG, CS1 is active-low and CS2 is active-high; both must be asserted simultaneously (CS1 = L, CS2 = H) for normal read/write operation. This dual-control scheme allows hierarchical memory decoding - for example, using CS2 as a bank select and CS1 as a chip select within that bank - improving system-level address flexibility.