Renesas 71V124SA12TYGI

Overview

71V124SA12TYGI from Renesas Electronics is a 128K × 8 (1 Mbit) high-speed CMOS static RAM with JEDEC center power/ground pinout, 12 ns access time, industrial temperature range (–40°C to +85°C), and single 3.3 V supply operation. It serves as asynchronous main memory or cache buffer in embedded controllers and telecom line cards requiring deterministic timing and low-noise operation.

For engineers reviewing the 71V124SA12TYGI datasheet, 71V124SA12TYGI pinout, 71V124SA12TYGI application, or 71V124SA12TYGI equivalent, key selection criteria include tAA ≤ 12 ns read access, tWC = 12 ns write cycle, LVTTL-compatible I/O, center-GND/center-VDD SOJ package noise reduction, and full standby current of 10 mA at VDD = 3.6 V.

Technical Context

The 71V124SA12TYGI implements fully static asynchronous logic with no clocks or refresh required. Its address decoder drives a 1,048,576-bit memory array using high-reliability CMOS process, enabling stable operation across industrial temperature extremes without timing drift.

It features dual control enable architecture: Chip Select (CS) and Output Enable (OE) operate independently, allowing fast 5 ns OE-controlled output enable while maintaining CS-based deselection for 10 mA ISB1 standby current. All inputs and outputs are LVTTL-compatible with VIH ≥ 2.0 V and VOL ≤ 0.4 V under load.

Key Specifications

Pinout & Package

71V124SA12TYGI is housed in a 32-pin 300-mil Plastic SOJ (PJG32) package with JEDEC-compliant center power/ground pinout-VDD on pins 16 and 24, GND on pins 13 and 20-to minimize ground bounce and improve signal integrity in dense PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY62128EV30LL-45ZSXI and AS6C1008-12TIN, the 71V124SA12TYGI uniquely delivers 12 ns performance in a noise-optimized 300-mil SOJ package with industrial qualification-enabling compact, robust memory subsystems where EMI control and thermal reliability are non-negotiable.

Availability

71V124SA12TYGI is available at Aetrix Electronics and suitable for telecom infrastructure, industrial PLCs, and medical imaging systems requiring stable component supply across long production lifecycles and temperature extremes.

Supply support for 71V124SA12TYGI 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 trusted embedded solutions for automotive, industrial, infrastructure, and IoT applications, with over 40 years of memory design heritage.

The IDT71V124 family-now part of Renesas' legacy high-speed SRAM portfolio-was engineered specifically for deterministic, low-noise memory interfacing in real-time control and communications systems demanding zero-refresh operation.

FAQ

What is the maximum operating frequency supported by the 71V124SA12TYGI?

The 71V124SA12TYGI does not use a clock and therefore has no operating frequency specification. Its performance is defined by timing parameters: tRC = 12 ns read cycle time and tWC = 12 ns write cycle time. System-level throughput depends on bus protocol and controller timing margins-not an internal oscillator. The 71V124SA12TYGI remains fully functional at any effective bus rate ≤ 83 MHz (1/12 ns), provided setup/hold times are met.

Does the 71V124SA12TYGI require external refresh circuitry?

No, the 71V124SA12TYGI is a fully static RAM and requires no refresh cycles. Its CMOS latch-based memory cells retain data indefinitely as long as VDD is maintained within 3.15–3.6 V and temperature stays within –40°C to +85°C. This eliminates refresh overhead in real-time systems and simplifies FPGA or MCU memory controller design-unlike DRAM, the 71V124SA12TYGI operates purely asynchronously.

What is the meaning of "TYGI" in the 71V124SA12TYGI part number?

In the 71V124SA12TYGI ordering code, "TY" denotes the 300-mil Plastic SOJ package (PJG32), "G" indicates green (lead-free/RoHS-compliant) construction, and "I" specifies industrial temperature grade (–40°C to +85°C). The "12" confirms 12 ns access time. Thus, 71V124SA12TYGI uniquely identifies the 12 ns, industrial-grade, RoHS-compliant, 300-mil SOJ variant of the IDT71V124 family.

Can the 71V124SA12TYGI be used with 5 V logic interfaces?

No-the 71V124SA12TYGI is strictly a 3.3 V LVTTL device. Its absolute maximum input voltage is VDD + 0.5 V = 4.1 V, and VIH min is 2.0 V at VDD = 3.15 V. Direct connection to 5 V logic violates the VIN rating and risks permanent damage. Interfacing with 5 V systems requires level translation (e.g., TXB0108) or selection of a 5 V tolerant alternative like the IS61LV12816.

How does the center power/ground pinout improve noise performance in the 71V124SA12TYGI?

The 71V124SA12TYGI places VDD on pins 16 and 24 and GND on pins 13 and 20-symmetrically centered in the 32-pin SOJ array. This layout minimizes ground loop inductance and equalizes power distribution impedance across the die, reducing simultaneous switching noise (SSN) by up to 40% compared to corner-pin SOJ packages. The result is cleaner signal integrity for adjacent high-speed traces in dense PCBs-critical for telecom and avionics applications.