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Renesas 71V424S12PHG
- Part No.:
- 71V424S12PHG
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 44-TSOP (0.400", 10.16mm Width)
- Datasheet:
-
71V424S12PHG.pdf
- Description:
- IC SRAM 4MBIT PARALLEL 44TSOP II
- Quantity:
- Payment:
- Shipping:
Inventory:1,032
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Product details
Overview
71V424S12PHG from Renesas Electronics is a 4-Mbit (512K × 8) high-speed CMOS static RAM with 12 ns read/write cycle time, single 3.3 V supply operation, and TTL-compatible bidirectional I/O. It features JEDEC-standard center power/ground pinout for noise reduction and supports commercial temperature range (0°C to +70°C) in a 44-pin TSOP package. Used in embedded controllers and networking buffers requiring fast, asynchronous memory access.
For engineers reviewing the 71V424S12PHG datasheet, 71V424S12PHG pinout, 71V424S12PHG application, or 71V424S12PHG equivalent, key selection criteria include access time (tAA ≤ 12 ns), standby current (ISB ≤ 55 mA), output enable delay (tOE ≤ 6 ns), and compatibility with 3.3 V logic systems without level translation.
Technical Context
The 71V424S12PHG implements fully static asynchronous circuitry-no clocks or refresh required-and uses high-reliability CMOS fabrication optimized for low-noise, high-speed memory operation. Its dual-control write architecture supports both WE-controlled and CS-controlled timing modes, with guaranteed tWP ≥ 8 ns and tDW ≥ 6 ns under specified load conditions.
It integrates TTL-compatible input thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V) and output drive capability (VOH ≥ 2.4 V at –4 mA, VOL ≤ 0.4 V at 8 mA), enabling direct interfacing with legacy 3.3 V microcontrollers and FPGAs. The device provides three distinct power states: active read/write (ICC ≤ 170 mA), dynamic standby (ISB ≤ 55 mA), and full static standby (ISB1 ≤ 20 mA).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4,194,304 bits (512K × 8) - supports byte-wide data bus architectures without external multiplexing |
| Access Time (tAA) | ≤12 ns - enables CPU interface at up to ~83 MHz sustained random read rate |
| Supply Voltage | 3.0 V to 3.6 V - compatible with standard 3.3 V rail; no separate VDDQ required |
| Operating Temperature | 0°C to +70°C - qualified for commercial-grade industrial control and communications equipment |
| Package | 44-pin TSOP Type II (PHG44), 400 mil width - surface-mount compatible with standard reflow profiles |
| Input Capacitance | 7 pF (CIN) - minimizes loading on address/control buses, preserving signal integrity at high speed |
| Standby Current (ISB) | ≤55 mA - reduces system power during idle periods while retaining data without refresh |
Pinout & Package
44-pin TSOP Type II (PHG44) package, 400 mil body width, JEDEC-standard footprint with center VDD/VSS arrangement for reduced switching noise.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| A0–A18 | Address Inputs | 19-bit address bus supporting full 512K-word addressing; synchronous with CS/OE transitions |
| CS | Chip Select | Active-low enable; controls device selection and entry into standby (ISB/ISB1) when high |
| OE | Output Enable | Active-low; enables bidirectional I/O pins as outputs during read cycles; tOE ≤ 6 ns |
| WE | Write Enable | Active-low; initiates write cycle when CS is low; supports overlap-based write timing |
| I/O0–I/O7 | Bidirectional Data Bus | TTL-compatible 8-bit data path; high-impedance when OE or CS inactive |
| VDD | Power Supply | +3.3 V core supply; located at center of package per JEDEC pinout for noise suppression |
| VSS | Ground | Signal ground reference; paired with VDD at center for balanced power delivery |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC Center Power/Ground Pinout | Reduces simultaneous switching noise (SSN) by minimizing inductive loop area between VDD and VSS |
| Equal Access and Cycle Times | tRC = tAA = 12 ns ensures deterministic timing for both read and write operations in burst-mode systems |
| Low-Power Standby Modes | ISB ≤ 55 mA (dynamic) and ISB1 = 20 mA (static) enable energy-efficient operation in battery-backed or low-duty-cycle applications |
| TTL-Compatible I/O | Direct interface with 3.3 V microcontrollers and FPGAs without level shifters; VIH/VIL thresholds meet JEDEC JESD8-12 |
| Full Static Operation | No clocks, no refresh, no wait states - simplifies system design and eliminates DRAM controller overhead |
Applications
| Industrial PLC Memory Buffer | Network Packet Buffer |
|---|---|
|
Use Scenario: Storing real-time I/O status and command queues in programmable logic controllers with deterministic scan cycles. IC Role / Device Role / Timing Role: Asynchronous byte-wide SRAM providing zero-wait-state access for ladder logic execution and fieldbus communication stacks. Use Value: 12 ns tAA ensures sub-microsecond response to sensor interrupts and actuator updates without CPU stalling. |
Use Scenario: Temporary storage of Ethernet frames in Layer 2 switches before forwarding or filtering decisions. IC Role / Device Role / Timing Role: High-speed packet buffer supporting line-rate buffering for 100 Mbps and 1 Gbps PHY interfaces. Use Value: Bidirectional I/O and 12 ns cycle time allow concurrent ingress/egress handling with minimal latency accumulation. |
| Medical Imaging Frame Store | Test Equipment Pattern Memory |
|
Use Scenario: Capturing and holding digitized ultrasound or X-ray frame data prior to compression or display rendering. IC Role / Device Role / Timing Role: Non-refreshing frame buffer interfaced directly to ADC/DAC controllers and video timing generators. Use Value: Full static operation guarantees data retention during processor sleep or clock gating, critical for diagnostic reliability. |
Use Scenario: Storing stimulus/response patterns in automated test equipment for semiconductor functional validation. IC Role / Device Role / Timing Role: Deterministic-access pattern memory synchronized to ATE timing engines via CS/OE strobes. Use Value: Equal tAA/tRC and 5 ns tOLZ enable precise edge-aligned waveform generation without timing skew. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed asynchronous SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY62148EV30LL-45ZSXIT | 512K × 8, 45 ns access, 2.5 V/3.3 V dual-supply support, 44-pin TSOP | Slower timing but wider voltage tolerance; suitable where power flexibility outweighs speed | Select when system requires mixed-voltage domain compatibility or lower ICC at reduced frequency |
| AS6C4008-12TIN | 512K × 8, 12 ns access, 3.3 V only, 44-pin TSOP, lower ISB1 (5 µA) | Near-identical speed and package; ultra-low static standby current ideal for always-on monitoring | Prefer for battery-powered or energy-constrained applications needing <10 µA full-standby draw |
Compared with CY62148EV30LL-45ZSXIT and AS6C4008-12TIN, the 71V424S12PHG delivers balanced performance across access speed, noise immunity (center VDD/VSS), and commercial-temperature reliability-making it optimal for cost-sensitive, high-throughput embedded systems where 12 ns determinism and JEDEC-compliant layout are prioritized.
Availability
71V424S12PHG is available at Aetrix Electronics and suitable for industrial PLCs, network switches, medical imaging subsystems, and automated test equipment requiring stable component supply and long-term manufacturability.
Supply support for 71V424S12PHG 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 71V424S12PHG belongs to Renesas' legacy high-speed SRAM product line, designed specifically for deterministic, low-latency memory interfacing in resource-constrained embedded systems without refresh overhead.
FAQ
What is the maximum operating frequency supported by the 71V424S12PHG?
The 71V424S12PHG does not operate on a clock signal-it is an asynchronous SRAM. Its maximum effective throughput is determined by its 12 ns read/write cycle time (tRC), enabling sustained random access rates up to approximately 83 million operations per second. System-level frequency depends on bus protocol and controller timing margins, not an internal clock.
Does the 71V424S12PHG require external refresh circuitry?
No, the 71V424S12PHG is a fully static RAM and requires no refresh cycles or external refresh circuitry. Data retention is maintained indefinitely as long as VDD remains within specification (3.0 V–3.6 V) and ambient temperature stays within the commercial range (0°C to +70°C). This eliminates complexity associated with DRAM controllers.
Can the 71V424S12PHG be used with 5 V logic systems?
No-the 71V424S12PHG is strictly a 3.3 V device. Its absolute maximum input voltage is VDD + 0.5 V (≤4.1 V), and VIH minimum is 2.0 V. Direct connection to 5 V logic violates absolute maximum ratings and risks permanent damage. Level-shifting circuitry is required for interoperability with 5 V systems.
What is the meaning of "PHG" in the part number 71V424S12PHG?
In the 71V424S12PHG part number, "PHG" denotes the package type: 44-pin TSOP Type II, 400 mil width, lead-free (Green) finish. This matches Renesas' official ordering code convention where PHG corresponds to the PHG44 package variant, distinct from the 36-pin SOJ (YG) option.
How does the JEDEC center power/ground pinout improve noise performance in the 71V424S12PHG?
The 71V424S12PHG places VDD and VSS at the center of the 44-pin TSOP (pins 22 and 23), reducing the inductive loop area between supply and return paths. This configuration lowers simultaneous switching noise (SSN) and ground bounce during high-speed address/data transitions-critical for maintaining signal integrity in dense PCB layouts with multiple memory devices.
71V424S12PHG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 44-TSOP (0.400", 10.16mm Width)
- Packaging:
- Tube
- 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
71V424S12PHG FAQ
1.How can I place an order for 71V424S12PHG through Aetrix?
Please submit a Request for Quotation (RFQ) for 71V424S12PHG 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 71V424S12PHG reliable?
The price and inventory of 71V424S12PHG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 71V424S12PHG is usually 5 days.
3.What payment methods are accepted for 71V424S12PHG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 71V424S12PHG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 71V424S12PHG?
71V424S12PHG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 71V424S12PHG 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 71V424S12PHG?
For technical support, including 71V424S12PHG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 71V424S12PHG requirements.
6.How does Aetrix verify that 71V424S12PHG is sourced from the original manufacturer or authorized distributors?
All 71V424S12PHG 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 71V424S12PHG meets industry standards.
7.What is the process for return or replacement of 71V424S12PHG?
All 71V424S12PHG units undergo pre-shipment inspection (PSI). If there is an issue with 71V424S12PHG, 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 71V424S12PHG part is unused and in its original packaging.
Return procedure for 71V424S12PHG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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