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Renesas 71V424L12PHG
- Part No.:
- 71V424L12PHG
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 44-TSOP (0.400", 10.16mm Width)
- Datasheet:
-
71V424L12PHG.pdf
- Description:
- IC SRAM 4MBIT PARALLEL 44TSOP II
- Quantity:
- Payment:
- Shipping:
Inventory:1,776
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Product details
Overview
71V424L12PHG from Renesas Electronics is a 4-Mbit (512K × 8) high-speed CMOS static RAM with 12 ns access time, single 3.3 V supply operation, industrial temperature range (–40°C to +85°C), and JEDEC-compliant center-power/ground pinout - used for real-time data buffering in embedded controllers and FPGA co-processor memory subsystems.
For engineers reviewing the 71V424L12PHG datasheet, 71V424L12PHG pinout, 71V424L12PHG application, or 71V424L12PHG equivalent, key selection criteria include its 12 ns read cycle time, low-power standby current (45 mA dynamic ISB, 10 mA static ISB1), TTL-compatible bidirectional I/O, and TSOP-44 package compatibility with space-constrained industrial control modules.
Technical Context
The 71V424L12PHG implements fully static asynchronous architecture requiring no clocks or refresh cycles, supporting true random-access reads/writes via independent Chip Select (CS), Output Enable (OE), and Write Enable (WE) controls. Its address decoding covers A0–A18 (19-bit), enabling full 512K-word addressing without external logic.
All inputs and outputs are TTL-compatible with VIH = 2.0 V min and VIL = 0.8 V max at VDD = 3.3 V; output drive meets VOH ≥ 2.4 V at –4 mA and VOL ≤ 0.4 V at 8 mA. Standby power management uses CS-driven transition into two low-current states: dynamic ISB (45 mA) and full static ISB1 (10 mA).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4,194,304 bits (512K × 8) - supports byte-wide data paths without multiplexing |
| Access Time (tAA) | 12 ns max - enables direct interfacing with 80 MHz microcontrollers without wait states |
| Supply Voltage | 3.0–3.6 V - compatible with standard 3.3 V logic rails and LDO-regulated systems |
| Operating Temperature | –40°C to +85°C - qualified for industrial automation and outdoor edge-node deployments |
| Standby Current (ISB1) | 10 mA max - reduces system-level power by >50% vs. standard-power variant (71V424S12PHG) |
| I/O Capacitance | 8 pF max - minimizes signal integrity degradation on high-speed parallel buses |
| Pin Count / Package | 44-pin TSOP Type II (PHG44) - surface-mount compatible with automated PCB assembly |
Pinout & Package
71V424L12PHG is housed in a 44-pin, 400-mil TSOP Type II (PHG44) package with gull-wing leads, optimized for thermal dissipation and board-level reliability in industrial environments.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| A0–A18 | Address Inputs | 19-bit parallel address bus; fully decoded internally to select one of 512K locations |
| CS | Chip Select | Active-low enable; places device in active or standby mode - primary power gating control |
| OE | Output Enable | Active-low control for output drivers; allows read-data assertion without affecting write path |
| WE | Write Enable | Active-low signal initiating write cycle; latches data on I/O0–I/O7 when CS is asserted |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit TTL-compatible I/O; direction controlled implicitly by WE/OE timing - no external transceivers needed |
| VDD | Power Supply | +3.3 V supply input; decoupling required within 10 mm per JEDEC guidelines |
| VSS | Ground | Signal and power ground reference; center-placed for noise reduction per JEDEC pinout |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC Center Power/Ground Pinout | Reduces simultaneous switching noise (SSN) by symmetrically distributing VDD/VSS across package center - improves signal integrity in dense memory arrays |
| Low-Power Standby Mode (ISB1) | 10 mA max static current - extends battery life in portable industrial HMIs and enables rapid wake-up without initialization delay |
| TTL-Compatible I/O | Direct interface with legacy 3.3 V microcontrollers and FPGAs - eliminates level-shifter components and associated BOM cost |
| Equal Access & Cycle Times | tRC = tAA = 12 ns - simplifies timing budgeting in synchronous bus designs and avoids asymmetric read/write constraints |
| Single 3.3 V Supply | No auxiliary voltage rails required - reduces power supply complexity and PCB layer count in cost-sensitive embedded systems |
Applications
| Industrial PLC Data Buffer | FPGA Co-Processor Memory |
|---|---|
Use Scenario: Real-time I/O scan buffering in programmable logic controllers where deterministic latency under 12 ns is required for motion control loops. IC Role / Device Role / Timing Role: High-speed parallel SRAM acting as dual-port-accessible scratchpad memory between CPU and fieldbus interface ASIC. Use Value: Enables sub-microsecond data handoff between scan cycle stages - critical for maintaining 10 kHz servo update rates. |
Use Scenario: Frame buffer storage for image preprocessing pipelines in vision-enabled edge devices using Xilinx Artix-7 FPGAs. IC Role / Device Role / Timing Role: Byte-addressable, low-latency memory mapped to AXI-Lite slave interface for histogram accumulation and pixel windowing. Use Value: Eliminates DDR controller overhead and provides deterministic 12 ns read response - essential for pipelined pixel processing kernels. |
| Medical Imaging Control Panel | Ruggedized Telematics Gateway |
Use Scenario: Temporary waveform storage and UI state caching in portable ultrasound control panels operating in extended temperature ranges. IC Role / Device Role / Timing Role: Non-refreshing memory holding GUI bitmap overlays and sensor calibration tables during cold-start sequences. Use Value: Guarantees data retention across –40°C to +85°C without refresh circuitry - reduces firmware complexity and power consumption. |
Use Scenario: CAN message queue buffering in automotive-grade telematics units deployed in commercial fleet vehicles. IC Role / Device Role / Timing Role: Dual-cycle-access SRAM storing prioritized diagnostic frames before transmission over cellular modem. Use Value: Supports concurrent CAN RX/TX buffering with zero wait-state arbitration - prevents frame loss during peak network load. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed parallel SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AS7C34096B-12TIN | 4-Mbit (512K × 8), 12 ns, 3.3 V, 44-pin TSOP - higher ICC (170 mA vs. 155 mA) and no industrial temp option | Limited to commercial grade (0°C to +70°C); unsuitable for under-hood or outdoor deployments | Select when cost sensitivity outweighs temperature range requirements and board layout already accommodates AS7C footprint |
| IS61LV5128-12ML | 4-Mbit (512K × 8), 12 ns, 3.3 V, 44-pin TSOP - identical timing but higher ISB1 (20 mA vs. 10 mA) | Higher standby current increases system-level power draw in always-on monitoring nodes | Prefer for legacy designs where IS61LV5128-12ML is already qualified and power budget permits 10 mA penalty |
Compared with AS7C34096B-12TIN and IS61LV5128-12ML, the 71V424L12PHG delivers verified industrial temperature support and the lowest static standby current (10 mA), making it optimal for thermally demanding, battery-aware embedded systems where deterministic low-power operation is mandatory.
Availability
71V424L12PHG is available at Aetrix Electronics and suitable for industrial PLC data buffering, FPGA co-processor memory, medical imaging control panels, and ruggedized telematics gateways requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 71V424L12PHG 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 core expertise in microcontrollers, analog, power, and memory technologies.
The 71V424L12PHG belongs to Renesas' legacy high-speed parallel SRAM product line, designed specifically for deterministic, low-latency memory interfacing in resource-constrained industrial and communications equipment where refresh-free operation and JEDEC-standard packaging are essential.
FAQ
What is the maximum operating frequency supported by the 71V424L12PHG?
The 71V424L12PHG does not operate on a clock signal - it is an asynchronous SRAM. Its 12 ns access time (tAA) and 12 ns read cycle time (tRC) define the minimum interval between successive valid address changes for reliable read operations, enabling effective interfacing with up to ~80 MHz bus controllers without wait states.
Does the 71V424L12PHG require external refresh circuitry?
No, the 71V424L12PHG is a fully static RAM and requires no refresh cycles or external timing control. Its internal latching circuitry retains data indefinitely as long as VDD remains within specification (3.0–3.6 V) and ambient temperature stays within –40°C to +85°C - eliminating refresh overhead in firmware and hardware design.
What is the meaning of "L" in the 71V424L12PHG part number?
The "L" in 71V424L12PHG denotes the Low Power variant of the IDT71V424 family. Compared to the standard-power "S" version (e.g., 71V424S12PHG), the 71V424L12PHG reduces dynamic standby current (ISB) by up to 10 mA and cuts full static standby current (ISB1) to 10 mA - a 50% improvement critical for energy-sensitive applications.
Can the 71V424L12PHG be used with 5 V TTL logic interfaces?
No - the 71V424L12PHG is strictly a 3.3 V device with TTL-compatible voltage thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V), but its absolute maximum input voltage is VDD + 0.5 V = 4.1 V. Direct connection to 5 V logic risks permanent damage; level translation is mandatory for interoperability with 5 V systems.
What package type does the 71V424L12PHG use, and is it RoHS compliant?
The 71V424L12PHG uses a 44-pin, 400-mil TSOP Type II (PHG44) package with gull-wing leads. Per Renesas' May 2021 datasheet revision, it is a green (RoHS-compliant) device - lead-free, halogen-free, and compliant with EU Directive 2011/65/EU and related environmental standards.
71V424L12PHG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 44-TSOP (0.400", 10.16mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Asynchronous
- Memory Size:
- 4Mbit
- Memory Organization:
- 512K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 12ns
- Access Time:
- 12 ns
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 44-TSOP II
71V424L12PHG FAQ
1.How can I place an order for 71V424L12PHG through Aetrix?
Please submit a Request for Quotation (RFQ) for 71V424L12PHG on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for 71V424L12PHG reliable?
The price and inventory of 71V424L12PHG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 71V424L12PHG is usually 5 days.
3.What payment methods are accepted for 71V424L12PHG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 71V424L12PHG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 71V424L12PHG?
71V424L12PHG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 71V424L12PHG order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for 71V424L12PHG?
For technical support, including 71V424L12PHG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 71V424L12PHG requirements.
6.How does Aetrix verify that 71V424L12PHG is sourced from the original manufacturer or authorized distributors?
All 71V424L12PHG products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 71V424L12PHG meets industry standards.
7.What is the process for return or replacement of 71V424L12PHG?
All 71V424L12PHG units undergo pre-shipment inspection (PSI). If there is an issue with 71V424L12PHG, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The 71V424L12PHG part is unused and in its original packaging.
Return procedure for 71V424L12PHG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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