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Renesas 71V424S12PHG8
- Part No.:
- 71V424S12PHG8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 44-TSOP (0.400", 10.16mm Width)
- Datasheet:
-
71V424S12PHG8.pdf
- Description:
- IC SRAM 4MBIT PARALLEL 44TSOP II
- Quantity:
- Payment:
- Shipping:
Inventory:2,691
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Product details
Overview
71V424S12PHG8 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, TTL-compatible bidirectional I/O, and JEDEC-standard center-power/ground pinout for noise reduction. It serves as main or cache memory in embedded controllers, network interface cards, and industrial PLCs requiring deterministic, clock-free data retention.
For engineers reviewing the 71V424S12PHG8 datasheet, 71V424S12PHG8 pinout, 71V424S12PHG8 application, or 71V424S12PHG8 equivalent, key selection criteria include its 12 ns read cycle time, 36-pin SOJ and 44-pin TSOP package options, industrial-grade temperature support (–40°C to +85°C), low standby current (55 mA dynamic ISB, 10 mA static ISB1), and asynchronous static architecture eliminating refresh overhead.
Technical Context
The 71V424S12PHG8 implements fully static asynchronous logic with no clocks or refresh required. Its address decoding, I/O control, and output enable circuitry are optimized for sub-12 ns tAA and tACS, enabling direct interfacing with high-speed microprocessors and FPGAs without wait states.
It features dual active-low control inputs-Chip Select (CS) and Output Enable (OE)-with independent timing paths: OE enables fast 6 ns output valid (tOE), while CS governs full-cycle access (tRC = 12 ns) and power-down sequencing (tPD = 12 ns). All I/O pins are bidirectional and TTL-compatible with VIH = 2.0 V min and VOL = 0.4 V max at 8 mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4,194,304 bits (512K × 8) - supports byte-wide data buses without external multiplexing |
| Access Time (tAA) | 12 ns max - guarantees deterministic read latency for real-time control loops |
| Supply Voltage | 3.3 V ±10% - compatible with modern low-voltage logic families and eliminates level-shifting |
| Standby Current (ISB1) | 10 mA max - enables ultra-low-power hold mode during processor sleep states |
| Operating Temperature | –40°C to +85°C - qualified for industrial automation and outdoor telecom equipment |
| I/O Compatibility | TTL-compatible inputs/outputs - interoperable with legacy 5 V systems via 3.3 V tolerant interfaces |
| Package | 44-pin, 400 mil TSOP (PHG44) - surface-mount footprint supporting high-density PCB layouts |
Pinout & Package
71V424S12PHG8 is packaged in a 44-pin, 400 mil TSOP (PHG44) with JEDEC-standard center-power/ground pinout to minimize simultaneous switching noise. Pin 22 (VDD) and Pin 23 (VSS) are centrally located to reduce power/ground loop inductance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A18 | Address Inputs | 19-bit address bus supporting full 512K-word addressing with no external decoding |
| CS | Chip Select | Active-low enable controlling device selection and power state transitions (ISB/ISB1) |
| OE | Output Enable | Active-low control for output drivers; enables fast 6 ns output valid timing independent of CS |
| WE | Write Enable | Active-low write strobe; initiates write cycles with tWP = 8 ns minimum pulse width |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit TTL-compatible data path with 8 mA sink/source capability and 8 pF I/O capacitance |
| VDD | Power Supply | 3.3 V supply pin (Pin 22); center-located to reduce voltage droop under high-frequency switching |
| VSS | Ground | Ground reference (Pin 23); adjacent to VDD for optimal decoupling and noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC Center Power/Ground Pinout | Reduces simultaneous switching noise by minimizing power/ground loop inductance in high-speed bus environments |
| Equal Access and Cycle Times | 12 ns tAA = tRC ensures predictable timing margins for both read and write operations in synchronous bus designs |
| Low-Power Standby Mode | 10 mA ISB1 current enables energy-efficient idle states in battery-backed or fanless industrial systems |
| TTL-Compatible I/O | Supports direct connection to legacy 5 V microcontrollers and FPGAs without level translators or pull-up resistors |
| Fully Static Operation | Eliminates refresh circuitry and associated timing constraints, simplifying system design and reducing firmware overhead |
Applications
| Industrial PLC Memory Buffer | Network Interface Card (NIC) Packet Buffer |
|---|---|
|
Use Scenario: Storing real-time I/O scan data and ladder logic variables in programmable logic controllers operating in harsh factory environments. IC Role / Device Role / Timing Role: Primary working memory providing deterministic 12 ns read/write access for cyclic process control execution. Use Value: Industrial temperature rating (–40°C to +85°C) and low ISB1 ensure reliable operation during extended thermal cycling and unattended runtime. |
Use Scenario: Acting as a temporary packet buffer between Ethernet MAC and host processor in gigabit-capable NICs. IC Role / Device Role / Timing Role: High-bandwidth, low-latency SRAM enabling zero-wait-state DMA transfers for line-rate packet processing. Use Value: 12 ns tRC and TTL-compatible I/O allow seamless integration with FPGA-based MAC controllers without glue logic or timing compensation. |
| Medical Imaging System Frame Buffer | Avionics Display Controller Memory |
|
Use Scenario: Holding uncompressed grayscale image frames during real-time contrast enhancement and edge detection in portable ultrasound units. IC Role / Device Role / Timing Role: Byte-accessible frame buffer supporting burst reads/writes for pixel pipeline acceleration. Use Value: 512K × 8 organization matches common 512×512 pixel buffers; 44-pin TSOP enables compact, thermally efficient layout near imaging ASICs. |
Use Scenario: Providing display list storage and overlay buffer memory in certified cockpit display units requiring DO-254 compliance. IC Role / Device Role / Timing Role: Radiation-tolerant (qualified) static RAM used for critical rendering metadata and font glyph storage. Use Value: Fully static architecture eliminates refresh-induced timing jitter, ensuring deterministic display update timing essential for flight-critical UIs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed static RAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY62148EV30LL-12ZSXIT | 512K × 8, 12 ns, 3.3 V, but uses 32-pin SOIC package (not TSOP) and lacks center-power pinout | Lower pin count reduces PCB routing complexity but increases trace inductance and noise susceptibility | Select when board space permits larger SOIC footprint and noise margin is less critical than layout simplicity |
| AS6C4008-12TIN | 512K × 8, 12 ns, 3.3 V, 44-pin TSOP, but rated only for commercial temperature (0°C to +70°C) | Not qualified for industrial ambient conditions; unsuitable for uncooled enclosures or outdoor deployments | Select only for cost-sensitive consumer or lab-grade equipment where extended temperature range is unnecessary |
Compared with CY62148EV30LL-12ZSXIT and AS6C4008-12TIN, the 71V424S12PHG8 uniquely combines industrial temperature qualification, JEDEC center-power/ground pinout for EMI control, and 44-pin TSOP packaging-making it the preferred choice for mission-critical embedded systems demanding reliability, noise immunity, and thermal robustness.
Availability
71V424S12PHG8 is available at Aetrix Electronics and suitable for industrial PLCs, network interface cards, medical imaging subsystems, avionics displays, and test equipment requiring stable component supply across long production lifecycles.
Supply support for 71V424S12PHG8 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.
The 71V424S12PHG8 belongs to Renesas' legacy high-speed SRAM product line, engineered specifically for deterministic, low-latency memory in real-time embedded systems where refresh-free operation and industrial-grade reliability are mandatory.
FAQ
What is the maximum operating frequency supported by the 71V424S12PHG8?
The 71V424S12PHG8 does not operate on a clock signal-it is an asynchronous static RAM. Its performance is defined by timing parameters: maximum read/write cycle time (tRC) is 12 ns, corresponding to an effective upper limit of approximately 83 MHz for continuous random access. This allows direct interfacing with processors running at up to 83 MHz bus speeds without wait states.
Does the 71V424S12PHG8 require refresh circuitry or periodic memory maintenance?
No, the 71V424S12PHG8 is a fully static RAM and requires no refresh cycles, clocks, or periodic maintenance. Its CMOS latch-based memory cells retain data indefinitely as long as VDD is applied and within specification. This eliminates refresh-related timing constraints and firmware overhead, making it ideal for real-time deterministic systems.
Can the 71V424S12PHG8 be used with 5 V logic systems?
Yes-the 71V424S12PHG8 features TTL-compatible inputs and outputs, meaning its VIH threshold is 2.0 V min and VIL is 0.8 V max, allowing safe interfacing with 5 V microcontrollers and FPGAs. However, VDD must remain at 3.3 V ±10%; input voltages must not exceed VDD + 0.5 V per absolute maximum ratings.
What is the difference between the 'S' and 'L' suffixes in the 71V424S12PHG8 part number?
The 'S' in 71V424S12PHG8 denotes Standard Power configuration, with dynamic ICC = 170 mA and standby ISB = 55 mA (industrial grade). The 'L' variant (e.g., 71V424L12PHG8) offers lower power: ICC = 155 mA and ISB = 50 mA. Both share identical timing (12 ns), pinout, and functionality-selection depends on thermal and power budget requirements.
Is the 71V424S12PHG8 RoHS-compliant and halogen-free?
Yes-the 71V424S12PHG8 is a Renesas "Green" device, compliant with RoHS Directive 2011/65/EU and halogen-free per IEC 61249-2-21. The 'G' in the package code (PHG44) explicitly indicates green material content, and the device meets JEDEC J-STD-609A Class 1 moisture sensitivity level (MSL-1) for unlimited floor life.
71V424S12PHG8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 44-TSOP (0.400", 10.16mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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
71V424S12PHG8 FAQ
1.How can I place an order for 71V424S12PHG8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 71V424S12PHG8 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 71V424S12PHG8 reliable?
The price and inventory of 71V424S12PHG8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 71V424S12PHG8 is usually 5 days.
3.What payment methods are accepted for 71V424S12PHG8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 71V424S12PHG8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 71V424S12PHG8?
71V424S12PHG8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 71V424S12PHG8 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 71V424S12PHG8?
For technical support, including 71V424S12PHG8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 71V424S12PHG8 requirements.
6.How does Aetrix verify that 71V424S12PHG8 is sourced from the original manufacturer or authorized distributors?
All 71V424S12PHG8 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 71V424S12PHG8 meets industry standards.
7.What is the process for return or replacement of 71V424S12PHG8?
All 71V424S12PHG8 units undergo pre-shipment inspection (PSI). If there is an issue with 71V424S12PHG8, 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 71V424S12PHG8 part is unused and in its original packaging.
Return procedure for 71V424S12PHG8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
71V424S12PHG8 Tags
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M24C02-WMN6TP
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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M24C02-FMC6TG
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