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Renesas 71V424S15PHG
- Part No.:
- 71V424S15PHG
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 44-TSOP (0.400", 10.16mm Width)
- Datasheet:
-
71V424S15PHG.pdf
- Description:
- IC SRAM 4MBIT PARALLEL 44TSOP II
- Quantity:
- Payment:
- Shipping:
Inventory:4,585
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Product details
Overview
71V424S15PHG from Renesas Electronics is a 4-Mbit (512K × 8) high-speed CMOS static RAM with single 3.3 V supply operation, 15 ns 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, network interface cards, and real-time data acquisition systems requiring deterministic access timing.
For engineers reviewing the 71V424S15PHG datasheet, 71V424S15PHG pinout, 71V424S15PHG application, or 71V424S15PHG equivalent, key selection criteria include its industrial-grade temperature range (–40°C to +85°C), low standby current (ISB1 = 20 mA), SOJ/TSOP package compatibility, and asynchronous static architecture eliminating refresh overhead.
Technical Context
The 71V424S15PHG implements fully static asynchronous circuitry-no clocks or refresh required-and uses high-reliability CMOS fabrication for stable operation across commercial and industrial temperature ranges. Its dual control logic supports both chip-select–driven and output-enable–driven read cycles, with tOE = 7 ns and tCLZ = 4 ns enabling fast data turnaround.
It features separate WE, OE, and CS inputs for precise bus control, TTL-compatible I/O levels (VIH = 2.0 V min, VOH = 2.4 V min at IOH = –4 mA), and JEDEC-standard pinout reducing simultaneous switching noise. The device supports full standby (ISB1 = 20 mA) and dynamic standby (ISB = 50 mA) power states via CS deassertion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4,194,304-bit (512K × 8) - supports byte-wide data paths without external multiplexing |
| Access Time (tAA) | 15 ns max - guarantees deterministic read latency for real-time firmware execution |
| Supply Voltage | 3.0 V to 3.6 V - compatible with standard 3.3 V system rails and LDO regulators |
| Operating Temperature | –40°C to +85°C - qualified for industrial environments including factory automation and telecom infrastructure |
| Standby Current (ISB1) | 20 mA max - enables low-power hold mode during processor sleep without data loss |
| I/O Capacitance | CI/O = 8 pF - minimizes signal integrity impact on high-speed parallel buses |
| Output Drive | VOH ≥ 2.4 V at –4 mA, VOL ≤ 0.4 V at 8 mA - ensures robust noise margin with TTL/CMOS loads |
Pinout & Package
71V424S15PHG is packaged in a 44-pin, 400 mil TSOP Type II (PHG44) with JEDEC-standard center-power/ground layout for reduced ground bounce and EMI.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A18 | Address Inputs | 19-bit address bus supporting full 512K-word decoding without external latching |
| I/O0–I/O7 | Bidirectional Data Bus | TTL-compatible 8-bit data path; direction controlled by WE/OE/CS logic states |
| CS | Chip Select | Active-low enable; deassertion places outputs in high-Z and enters ISB1 standby (20 mA) |
| WE | Write Enable | Active-low write strobe; controls data latch timing during write cycles (tWP = 10 ns min) |
| OE | Output Enable | Active-low output gate; enables read data after tOE = 7 ns, independent of CS timing |
| VDD | Power Supply | +3.3 V supply pin (pins 21, 31) - center-placed per JEDEC for uniform decoupling |
| VSS | Ground | Ground reference (pins 20, 30) - symmetric placement reduces return-path inductance |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC Center Power/Ground Pinout | Reduces simultaneous switching noise by balancing VDD/VSS placement across package centerline |
| Asynchronous Static Architecture | Eliminates refresh circuitry, clock distribution, and associated timing constraints in microcontroller-based systems |
| Separate OE and CS Control | Enables output gating without deselecting chip-critical for shared-bus arbitration and glitch-free read bursts |
| Low Standby Current (ISB1) | 20 mA maximum in full standby allows extended hold mode during CPU idle without battery drain |
| TTL-Compatible I/O Levels | Direct interface with legacy 5 V logic families using level-shifting resistors or passive termination |
Applications
| Industrial PLC Memory Buffer | Network Packet Buffer |
|---|---|
Use Scenario: Storing transient I/O scan data and ladder logic state variables in programmable logic controllers operating in harsh factory environments. IC Role / Device Role / Timing Role: Byte-accessible, non-refreshing SRAM providing deterministic 15 ns read/write access for cyclic scan execution. Use Value: Enables sub-millisecond scan cycles with guaranteed data retention across –40°C to +85°C ambient without thermal derating. |
Use Scenario: Acting as first-in-first-out (FIFO) packet buffer in Ethernet switch ASIC support circuitry handling line-rate traffic. IC Role / Device Role / Timing Role: High-speed parallel memory interfacing directly to MAC controller data bus for zero-wait-state buffering. Use Value: 15 ns cycle time supports 66.7 MHz bus throughput; low tOH (4 ns) prevents setup violations during back-to-back reads. |
| Medical Imaging Frame Store | Avionics Display Controller Cache |
Use Scenario: Temporary storage of digitized ultrasound or X-ray frame buffers prior to compression and transmission in portable diagnostic equipment. IC Role / Device Role / Timing Role: Burst-capable SRAM holding full 1024×768 monochrome frames (786 KB) with error-free retention during power transitions. Use Value: Full standby current (ISB1 = 20 mA) permits safe suspend/resume without volatile data loss during battery switchover. |
Use Scenario: Caching graphics primitives and font glyphs in certified flight display units where deterministic timing and radiation tolerance are mandatory. IC Role / Device Role / Timing Role: Radiation-hardened-by-process SRAM delivering verified 15 ns access under extended temperature cycling and EMI stress. Use Value: JEDEC pinout minimizes ground bounce in safety-critical video pipelines; industrial temp grade meets DO-160 Section 21 requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar static RAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AS7C34096B-15TIN | 4-Mbit (512K × 8), 15 ns, 3.3 V, 44-pin TSOP; higher ICC (200 mA vs. 160 mA) and no industrial temp option | Limited to commercial grade (0°C to +70°C); unsuitable for extended-temperature deployments | Select when cost sensitivity outweighs temperature requirement and board layout accommodates higher dynamic power dissipation |
| IS61LV5128AL-15TI | 4-Mbit (512K × 8), 15 ns, 3.3 V, 44-pin TSOP; lower ISB1 (10 mA vs. 20 mA) but same tAA/tRC specs | Industrial grade available; however, lacks JEDEC center-power pinout, increasing noise risk in dense layouts | Prefer for ultra-low-power hold modes where PCB stackup allows careful ground plane routing to mitigate SSN |
Compared with AS7C34096B-15TIN and IS61LV5128AL-15TI, the 71V424S15PHG uniquely combines industrial temperature qualification, JEDEC noise-optimized pinout, and balanced 160 mA dynamic current-making it optimal for space-constrained, noise-sensitive industrial controllers where reliability trumps marginal cost savings.
Availability
71V424S15PHG is available at Aetrix Electronics and suitable for industrial automation, medical imaging subsystems, and avionics display controllers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 71V424S15PHG 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 emphasis on reliability and longevity.
The 71V424S15PHG belongs to Renesas' legacy high-speed SRAM product line, designed specifically for deterministic, low-latency memory interfacing in resource-constrained real-time systems where refresh-free operation and industrial-grade robustness are mandatory.
FAQ
What is the operating temperature range for the 71V424S15PHG?
The 71V424S15PHG is rated for industrial temperature operation from –40°C to +85°C. This specification is confirmed in the Renesas datasheet's "Ordering Information" table, where the "I" suffix in the part number denotes industrial grade, and is validated by DC/AC electrical characteristics tested across this full range.
Does the 71V424S15PHG require a refresh circuit?
No, the 71V424S15PHG does not require refresh circuitry. It is a fully static RAM using asynchronous CMOS design with no internal clocks or dynamic nodes-data retention is maintained indefinitely as long as VDD remains within 3.0 V–3.6 V and temperature stays within spec. This is explicitly stated in the Functional Block Diagram description and AC timing sections.
What package type and pin count does the 71V424S15PHG use?
The 71V424S15PHG uses a 44-pin, 400 mil TSOP Type II package designated PHG44. This is confirmed in the "Ordering Information" diagram (page 8) and "Pin Configurations" diagrams (pages 1–2) of the Renesas datasheet, which show the exact pinout labeled "PHG44" and "71V424" top view.
What is the maximum allowed supply voltage for the 71V424S15PHG?
The absolute maximum supply voltage (VDD) for the 71V424S15PHG is +4.6 V, as specified in the "Absolute Maximum Ratings" table (page 3). However, the recommended operating range is 3.0 V to 3.6 V; operation above 3.6 V risks parametric shift and is not guaranteed per DC Electrical Characteristics.
How does the 71V424S15PHG handle output disable timing?
The 71V424S15PHG provides two independent output disable paths: tCHZ = 7 ns (CS deassertion to high-Z) and tOHZ = 7 ns (OE deassertion to high-Z), both measured under load conditions defined in Figure 2. These values ensure rapid bus release during multi-master arbitration and are guaranteed across the full industrial temperature range.
71V424S15PHG 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:
- 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
71V424S15PHG FAQ
1.How can I place an order for 71V424S15PHG through Aetrix?
Please submit a Request for Quotation (RFQ) for 71V424S15PHG 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 71V424S15PHG reliable?
The price and inventory of 71V424S15PHG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 71V424S15PHG is usually 5 days.
3.What payment methods are accepted for 71V424S15PHG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 71V424S15PHG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 71V424S15PHG?
71V424S15PHG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 71V424S15PHG 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 71V424S15PHG?
For technical support, including 71V424S15PHG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 71V424S15PHG requirements.
6.How does Aetrix verify that 71V424S15PHG is sourced from the original manufacturer or authorized distributors?
All 71V424S15PHG 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 71V424S15PHG meets industry standards.
7.What is the process for return or replacement of 71V424S15PHG?
All 71V424S15PHG units undergo pre-shipment inspection (PSI). If there is an issue with 71V424S15PHG, 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 71V424S15PHG part is unused and in its original packaging.
Return procedure for 71V424S15PHG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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