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Renesas 71V424S15PHG8
- Part No.:
- 71V424S15PHG8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 44-TSOP (0.400", 10.16mm Width)
- Datasheet:
-
71V424S15PHG8.pdf
- Description:
- IC SRAM 4MBIT PARALLEL 44TSOP II
- Quantity:
- Payment:
- Shipping:
Inventory:4,082
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Product details
Overview
71V424S15PHG8 from Renesas Electronics is a 4-Mbit (512K × 8) high-speed CMOS static RAM with 3.3V single-supply operation, 15ns read/write cycle time, JEDEC-compliant center-power/ground pinout, and TTL-compatible bidirectional I/O. It serves as main or buffer memory in embedded controllers requiring deterministic, clockless data access-e.g., network packet buffering in industrial Ethernet switches.
For engineers reviewing the 71V424S15PHG8 datasheet, 71V424S15PHG8 pinout, 71V424S15PHG8 application, or 71V424S15PHG8 equivalent, key selection criteria include access timing consistency (tAA = tACS = 15ns), low dynamic standby current (ISB = 50mA max), SOJ/TSOP package compatibility, and industrial-grade temperature support (–40°C to +85°C).
Technical Context
The 71V424S15PHG8 implements fully static asynchronous logic with no clocks or refresh required. Its address decoder drives a 4,194,304-bit memory array organized as 512K × 8, supporting concurrent read/write operations via independent WE, OE, and CS control lines.
All inputs and outputs are TTL-compatible (VIH = 2.0V min, VIL = 0.8V max), and the device uses center-power/ground pinout (VDD/VSS at pins 11/10 in SOJ, pins 22/21 in TSOP) to minimize switching noise. Standby current drops to ISB1 = 20mA (standard power) under full deselect conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4,194,304 bits (512K × 8) - supports byte-wide data paths without external multiplexing |
| Access Time (tAA) | 15 ns max - guarantees deterministic latency for real-time interrupt service routines |
| Supply Voltage | 3.0–3.6 V - compatible with standard 3.3V LDOs and avoids level-shifting in mixed-voltage systems |
| Operating Temperature | –40°C to +85°C - qualified for industrial control and transportation electronics |
| Dynamic Current (ICC) | 160 mA max at fMAX - enables thermal budgeting for dense PCB layouts |
| Standby Current (ISB) | 50 mA max - reduces power during idle cycles in battery-backed or energy-sensitive applications |
| I/O Capacitance | 8 pF max - minimizes signal integrity degradation on high-speed parallel buses |
Pinout & Package
71V424S15PHG8 is packaged in a 44-pin, 400-mil TSOP Type II (PHG44) with JEDEC-standard center-power/ground layout for noise reduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A18 | Address Inputs | 19-bit address bus supporting full 512K-word addressing without external decoding |
| CS | Chip Select | Active-low enable controlling device participation in memory-mapped bus cycles |
| OE | Output Enable | Active-low control for tri-state output drivers; tOE = 7ns max ensures fast data release |
| WE | Write Enable | Active-low write strobe; tWP = 10ns min defines minimum pulse width for reliable write setup |
| I/O0–I/O7 | Bidirectional Data | 8-bit TTL-compatible data bus sharing pins for read/write; eliminates separate DQ/DQ̅ lines |
| VDD | Power Supply | 3.3V supply pin located centrally (pin 22) to reduce IR drop and ground bounce |
| VSS | Ground | Ground reference pin adjacent to VDD (pin 21) to form low-inductance power pair |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC Center Power/Ground Pinout | Reduces simultaneous switching noise by minimizing power loop inductance in high-density memory subsystems |
| Equal Access and Cycle Times | 15ns tAA = tRC ensures predictable timing margins for both read and write sequences in synchronous bus designs |
| TTL-Compatible I/O | Direct interface with legacy microcontrollers and FPGAs without level translators or pull-up resistors |
| Low-Power Standby Mode | ISB1 = 20mA max enables >90% power reduction when deselected-critical for fanless industrial enclosures |
| Industrial Temperature Range | –40°C to +85°C qualification supports deployment in uncontrolled environments like factory floors and outdoor gateways |
Applications
| Industrial PLC Memory Buffer | Medical Imaging Frame Store |
|---|---|
Use Scenario: Storing real-time I/O scan data and ladder logic variables in programmable logic controllers operating in harsh electrical environments. IC Role / Device Role / Timing Role: Asynchronous SRAM providing zero-wait-state memory access for deterministic scan-cycle execution. Use Value: 15ns access time and industrial temp rating ensure consistent performance across voltage sags and ambient temperature swings. | Use Scenario: Holding uncompressed grayscale image frames (e.g., 1024×768 @ 8-bit) during acquisition and preprocessing in portable ultrasound devices. IC Role / Device Role / Timing Role: Byte-wide frame buffer enabling burst writes from ADC and sequential reads to DSP engines. Use Value: Bidirectional TTL I/O and 8pF capacitance preserve signal integrity on short, high-speed traces between ASIC and memory. |
| Avionics Data Logger | Test Equipment Pattern Memory |
Use Scenario: Capturing flight sensor telemetry at 10kHz sampling rates with guaranteed non-volatile retention during power transitions. IC Role / Device Role / Timing Role: Static RAM acting as volatile capture buffer before flash transfer; no refresh circuitry required. Use Value: Full static operation eliminates timing jitter from refresh cycles-essential for timestamp accuracy in DO-178C-certified systems. | Use Scenario: Storing digital stimulus/response patterns in automated test equipment for semiconductor wafer probing. IC Role / Device Role / Timing Role: High-reliability memory storing multi-megabit test vectors accessed at precise clock edges. Use Value: 50mA ISB and 20mA ISB1 allow rapid power cycling between test sequences without thermal throttling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar static RAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY62148EV30LL-45ZSXIT | 4-Mbit (512K × 8), 45ns access, 5V-tolerant I/O, SOIC-32 package | Slower speed; requires 5V-tolerant interface design; not suitable for 3.3V-only systems | Select only if legacy 5V system integration or longer timing margins are acceptable |
| AS6C4008-15TIN | 4-Mbit (512K × 8), 15ns access, 3.3V supply, 44-pin TSOP-II, but no industrial temp grade | Lacks –40°C to +85°C qualification; limited to commercial-grade environments | Use where cost sensitivity outweighs extended temperature requirements |
Compared with CY62148EV30LL-45ZSXIT and AS6C4008-15TIN, the 71V424S15PHG8 uniquely delivers 15ns timing, industrial temperature range, and JEDEC center-power pinout in a single 3.3V TSOP package-enabling compact, noise-immune memory subsystems in mission-critical embedded systems.
Availability
71V424S15PHG8 is available at Aetrix Electronics and suitable for industrial automation, medical imaging, avionics data logging, and automated test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 71V424S15PHG8 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 71V424S15PHG8 belongs to Renesas' legacy high-speed CMOS SRAM product line, designed specifically for deterministic, low-latency memory interfacing in resource-constrained embedded systems where refresh-free operation and industrial reliability are mandatory.
FAQ
What is the maximum operating frequency supported by the 71V424S15PHG8?
The 71V424S15PHG8 does not operate on a clock; it is an asynchronous SRAM. Its maximum effective throughput is determined by its 15ns read/write cycle time (tRC), corresponding to a theoretical maximum bus rate of 66.7 MHz when continuously cycling addresses. This timing is guaranteed across the full industrial temperature range (–40°C to +85°C) and 3.0–3.6V supply.
Does the 71V424S15PHG8 require external refresh circuitry?
No, the 71V424S15PHG8 is a fully static RAM and requires no refresh cycles or clocks. Its internal latches retain data indefinitely as long as VDD remains within specification (3.0–3.6V) and ambient temperature stays within –40°C to +85°C. This eliminates timing overhead and jitter associated with DRAM refresh, making the 71V424S15PHG8 ideal for real-time deterministic systems.
What is the meaning of the "PHG8" suffix in 71V424S15PHG8?
The "PHG8" suffix in 71V424S15PHG8 indicates a 44-pin TSOP Type II package (PHG), green/RoHS-compliant material (G), and tape-and-reel packaging (8). This matches Renesas' official ordering code convention documented in the datasheet's Ordering Information section, confirming the part is supplied in industry-standard reels for automated SMT assembly.
Can the 71V424S15PHG8 be used with 5V logic interfaces?
No-the 71V424S15PHG8 has TTL-compatible input thresholds (VIH ≥ 2.0V, VIL ≤ 0.8V) but is strictly a 3.3V-only device. Its absolute maximum input voltage is VDD + 0.5V = 4.1V, and applying 5V signals risks permanent damage. Interfacing with 5V systems requires level translation; the 71V424S15PHG8 itself is not 5V-tolerant.
How does the center-power/ground pinout improve noise performance in the 71V424S15PHG8?
The 71V424S15PHG8 places VDD (pin 22) and VSS (pin 21) adjacent and centered in its 44-pin TSOP footprint. This configuration minimizes the power-ground loop inductance during simultaneous switching of multiple I/O lines, reducing ground bounce and supply rail collapse. Measured noise reduction enables stable operation in electrically noisy industrial environments without additional decoupling beyond standard 0.1µF ceramics per VDD/VSS pair.
71V424S15PHG8 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:
- 15ns
- Access Time:
- 15 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
71V424S15PHG8 FAQ
1.How can I place an order for 71V424S15PHG8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 71V424S15PHG8 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 71V424S15PHG8 reliable?
The price and inventory of 71V424S15PHG8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 71V424S15PHG8 is usually 5 days.
3.What payment methods are accepted for 71V424S15PHG8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 71V424S15PHG8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 71V424S15PHG8?
71V424S15PHG8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 71V424S15PHG8 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 71V424S15PHG8?
For technical support, including 71V424S15PHG8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 71V424S15PHG8 requirements.
6.How does Aetrix verify that 71V424S15PHG8 is sourced from the original manufacturer or authorized distributors?
All 71V424S15PHG8 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 71V424S15PHG8 meets industry standards.
7.What is the process for return or replacement of 71V424S15PHG8?
All 71V424S15PHG8 units undergo pre-shipment inspection (PSI). If there is an issue with 71V424S15PHG8, 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 71V424S15PHG8 part is unused and in its original packaging.
Return procedure for 71V424S15PHG8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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