Renesas 71V424L12PHG8

Overview

71V424L12PHG8 from Renesas Electronics is a 4-Mbit (512K × 8) low-power, high-speed CMOS static RAM operating from a single 3.3 V supply, with 12 ns access time, industrial temperature range (–40°C to +85°C), and JEDEC-compliant center power/ground pinout for noise reduction - used in real-time data buffering for industrial controllers and network packet memory.

For engineers reviewing the 71V424L12PHG8 datasheet, 71V424L12PHG8 pinout, 71V424L12PHG8 application, or 71V424L12PHG8 equivalent, key selection criteria include its TSOP-44 package, 12 ns read cycle time, low standby current (45 mA dynamic, 10 mA static), TTL-compatible I/O, and dual control (CS + OE) architecture for precise bus timing control.

Technical Context

The 71V424L12PHG8 implements fully static asynchronous logic with no clocks or refresh required, supporting true random-access reads and writes via independent chip select (CS) and output enable (OE) inputs. Its bidirectional I/O lines are TTL-compatible and operate at 3.3 V with guaranteed 5 ns OE-to-output delay and 4 ns CS-to-output low-Z time.

It uses high-reliability CMOS fabrication and features center-aligned VDD/VSS pins (pins 11 & 22 in TSOP-44) to minimize simultaneous switching noise. The device supports two distinct write timing modes - WE-controlled and CS-controlled - with defined setup/hold and recovery windows validated across commercial and industrial temperature ranges.

Key Specifications

Pinout & Package

71V424L12PHG8 is housed in a 44-pin, 400-mil TSOP Type II (PHG44) package with gull-wing leads and center VDD/VSS configuration for EMI suppression.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AS7C34096B-12TIN and IS61LV5128-12ML, the 71V424L12PHG8 uniquely delivers industrial-grade reliability in TSOP-44 with lowest standby current (10 mA ISB1) and JEDEC-optimized pinout - making it the only drop-in option for thermally constrained, safety-critical embedded systems requiring zero-refresh operation.

Availability

71V424L12PHG8 is available at Aetrix Electronics and suitable for industrial automation, network infrastructure, and medical imaging systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant green packaging.

Supply support for 71V424L12PHG8 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 71V424L12PHG8 belongs to Renesas' legacy IDT high-speed SRAM product line, designed specifically for deterministic, low-latency memory subsystems in real-time embedded systems where refresh-free operation and thermal robustness are mandatory.

FAQ

What is the maximum operating temperature range for the 71V424L12PHG8?

The 71V424L12PHG8 is rated for industrial temperature operation from –40°C to +85°C. This specification is guaranteed across all AC and DC electrical parameters in the datasheet, including access time, standby current, and I/O voltage thresholds. The device undergoes extended burn-in and thermal cycling validation to ensure reliability at both extremes, making it suitable for deployment in harsh environments such as factory floors or outdoor telecom cabinets.

Does the 71V424L12PHG8 require a refresh circuit or clock signal?

No, the 71V424L12PHG8 is a fully static RAM and requires no refresh circuit or clock signal. Its internal design uses bistable latching circuits that retain data indefinitely as long as power is applied. This eliminates timing-critical refresh overhead and simplifies system design - especially valuable in safety-critical applications like avionics or medical devices where deterministic behavior is essential.

What is the meaning of "L" in the part number 71V424L12PHG8?

The "L" in 71V424L12PHG8 denotes the low-power variant of the IDT71V424 family. Compared to the "S" (standard power) version, the "L" variant reduces dynamic operating current (ICC) by up to 15 mA and cuts full standby current (ISB1) to 10 mA - verified across all speed grades and temperature ranges. This designation is reflected in the datasheet's DC electrical characteristics tables and confirmed in Renesas' official ordering information.

Can the 71V424L12PHG8 be used with a 5 V microcontroller interface?

The 71V424L12PHG8 has TTL-compatible inputs (VIH ≥ 2.0 V, VIL ≤ 0.8 V) and outputs (VOH ≥ 2.4 V at –4 mA, VOL ≤ 0.4 V at 8 mA), allowing safe direct connection to 5 V microcontrollers *only if* the MCU's output high level meets the 71V424L12PHG8's VIH minimum and the 71V424L12PHG8's VOH satisfies the MCU's VIH requirement. However, sustained 5 V on VDD is prohibited - the device must be powered at 3.3 V.

What package type does the 71V424L12PHG8 use, and is it RoHS compliant?

The 71V424L12PHG8 uses a 44-pin TSOP Type II (PHG44) package with 400-mil body width and gull-wing leads. Per Renesas' ordering information and datasheet revision history (updated May 2021), this variant carries the "G" suffix indicating green (lead-free, halogen-free) compliance per JEDEC J-STD-609 and RoHS Directive 2011/65/EU. The "8" suffix confirms tape-and-reel packaging for automated SMT assembly.