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Renesas 71V424L15PHGI
- Part No.:
- 71V424L15PHGI
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 44-TSOP (0.400", 10.16mm Width)
- Datasheet:
-
71V424L15PHGI.pdf
- Description:
- IC SRAM 4MBIT PARALLEL 44TSOP II
- Quantity:
- Payment:
- Shipping:
Inventory:135
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Product details
Overview
71V424L15PHGI from Renesas Electronics is a 4-Mbit (512K × 8) low-power, high-speed CMOS static RAM operating from a single 3.3V supply, with 15ns read/write cycle time, industrial temperature range (–40°C to +85°C), and JEDEC-compliant 44-pin TSOP-II package. It serves as main or cache memory in embedded controllers, network interface cards, and real-time data buffering systems.
For engineers reviewing the 71V424L15PHGI datasheet, 71V424L15PHGI pinout, 71V424L15PHGI application, or 71V424L15PHGI equivalent, key selection criteria include its 15ns access timing, low standby current (ISB1 = 10mA), TTL-compatible I/O, dual control (CS + OE), and industrial-grade reliability for mission-critical memory subsystems.
Technical Context
The 71V424L15PHGI implements fully static asynchronous architecture-no clocks or refresh required-and uses high-reliability CMOS process technology optimized for low power and noise immunity. Its address decoder drives a 4,194,304-bit memory array with bidirectional TTL-compatible I/O lines and center-power/ground pinout to minimize simultaneous switching noise.
Control logic supports both CS-controlled and WE-controlled write cycles, with guaranteed tCLZ ≤ 4ns and tCHZ ≤ 7ns for fast output enable/disable transitions. The device features three distinct power states: active read/write (ICC = 145mA max), dynamic standby (ISB = 45mA max), and full static standby (ISB1 = 10mA).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4,194,304 bits (512K × 8) - supports byte-wide data bus interfacing without external multiplexing |
| Access Time (tAA) | 15 ns max - determines minimum CPU wait-state insertion for synchronous bus interfaces |
| Supply Voltage | 3.0 V to 3.6 V - compatible with standard 3.3V logic rails and tolerant of ±10% regulation variation |
| Standby Current (ISB1) | 10 mA max - enables ultra-low-power hold mode during processor sleep or system idle |
| Operating Temperature | –40°C to +85°C - qualified for industrial environments including factory automation and telecom infrastructure |
| I/O Interface | TTL-compatible inputs/outputs - eliminates level-shifting requirements when interfacing with legacy microcontrollers |
| Package | 44-pin TSOP-II (PHG44), 400 mil - surface-mount footprint compatible with automated PCB assembly and IPC-7351B land patterns |
Pinout & Package
71V424L15PHGI is housed in a 44-pin, 400-mil TSOP-II (PHG44) package with gull-wing leads and JEDEC-standard center-power/ground pinout for EMI reduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A18 | Address Inputs | 19-bit address bus supporting full 512K-word addressing; no internal latching required |
| CS | Chip Select | Active-low enable controlling device participation in memory map; enables multi-chip decoding |
| OE | Output Enable | Active-low signal gating data output drivers; allows shared bus operation with other peripherals |
| WE | Write Enable | Active-low control determining read vs. write cycle; decouples write timing from chip select |
| I/O0–I/O7 | Bidirectional Data I/O | 8-bit TTL-compatible data bus with automatic direction control via WE/CS logic |
| VDD | Power Supply | 3.3V core and I/O supply; two dedicated pins (pins 21 & 33) reduce IR drop and noise coupling |
| VSS | Ground | Ground reference; two dedicated pins (pins 20 & 32) provide low-inductance return paths |
| NC | No Connect | Pins 2, 3, 16, 17, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 34, 35, 36, 43, 44 - must remain unconnected per design |
Key Features
| Feature | Design Value |
|---|---|
| Low-power "L" variant | 10mA full standby current (ISB1) - reduces system-level power budget in always-on edge devices |
| JEDEC center-power/ground pinout | Dual VDD/VSS placement at package center - suppresses ground bounce and improves signal integrity on dense PCBs |
| Equal access and cycle times | 15ns tRC = tAA - simplifies timing analysis and eliminates asymmetric setup/hold constraints in bus designs |
| Fast output enable | 5ns tOE - enables rapid data sampling in burst-mode or DMA-driven memory transfers |
| Fully static operation | No clock or refresh circuitry required - eliminates external timing components and reduces firmware complexity |
Applications
| Industrial PLC Memory Buffer | Telecom Line Card Cache |
|---|---|
Use Scenario: Storing real-time I/O status and configuration registers in programmable logic controllers deployed in factory-floor environments. IC Role / Device Role / Timing Role: Byte-accessible non-refreshing SRAM providing deterministic 15ns read latency for scan-cycle execution. Use Value: Industrial temperature rating and low ISB1 ensure reliable operation during extended thermal cycling and power-loss recovery sequences. |
Use Scenario: Acting as packet descriptor buffer and lookup table storage in Ethernet switch line cards requiring sub-20ns memory response. IC Role / Device Role / Timing Role: High-speed parallel SRAM interfaced directly to ASIC/FPGA fabric with minimal glue logic. Use Value: TTL-compatible I/O and 15ns tAA eliminate level shifters and simplify timing closure in multi-GHz backplane designs. |
| Medical Imaging Frame Store | Avionics Data Logger |
Use Scenario: Temporary storage of digitized ultrasound or X-ray frames prior to compression and transmission in portable diagnostic equipment. IC Role / Device Role / Timing Role: Burst-capable memory supporting continuous 8-bit parallel writes at up to 66.7 MHz effective bandwidth. Use Value: Low dynamic ICC (145mA) and thermal stability prevent thermal throttling during sustained imaging sessions. |
Use Scenario: Recording flight sensor telemetry with guaranteed data retention during aircraft power transients and vibration-induced stress. IC Role / Device Role / Timing Role: Nonvolatile-supporting SRAM used with battery-backed controller for tamper-resistant black-box logging. Use Value: 44-pin TSOP-II package provides mechanical robustness and solder-joint reliability exceeding DO-160 environmental test requirements. |
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 |
|---|---|---|---|
| CY62148EV30LL-15ZSXI | 4-Mbit (512K × 8), 15ns, 3.3V, 44-pin TSOP-II, but uses Cypress/Infineon pinout (non-JEDEC center GND/VDD) | Lacks JEDEC noise-suppression layout; requires PCB redesign for pin compatibility | Select only if existing board uses Cypress footprint and thermal profile permits higher ISB1 (15mA) |
| AS6C4008-15TIN | 4-Mbit (512K × 8), 15ns, 3.3V, 44-pin TSOP-II, but rated only for commercial temp (0°C to +70°C) | Not qualified for industrial ambient; unsuitable for uncooled enclosures or outdoor deployments | Acceptable for cost-sensitive consumer-grade equipment where temperature derating is feasible |
Compared with CY62148EV30LL-15ZSXI and AS6C4008-15TIN, the 71V424L15PHGI uniquely combines JEDEC-compliant low-noise pinout, industrial temperature qualification, and industry-leading 10mA full-standby current-making it the preferred choice for ruggedized, power-constrained, and EMI-sensitive embedded memory applications.
Availability
71V424L15PHGI is available at Aetrix Electronics and suitable for industrial automation, telecom infrastructure, medical imaging, and avionics applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for 71V424L15PHGI 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, automotive MCUs, analog/power devices, and memory products for industrial, automotive, and infrastructure markets.
The 71V424L15PHGI belongs to Renesas' legacy high-speed parallel SRAM product line, engineered specifically for deterministic, low-latency, and thermally robust memory subsystems in real-time embedded systems.
FAQ
What is the maximum operating frequency supported by the 71V424L15PHGI?
The 71V424L15PHGI does not operate on a clock signal-it is a fully static asynchronous SRAM. Its performance is defined by timing parameters: maximum read/write cycle time (tRC) is 15ns, corresponding to an effective maximum bus toggle rate of 66.7 MHz. This value is derived from tRC = 15ns → fMAX = 1/tRC, and applies under worst-case industrial temperature and voltage conditions.
Does the 71V424L15PHGI require external refresh circuitry?
No, the 71V424L15PHGI requires no external refresh circuitry. It uses fully static CMOS memory cells that retain data indefinitely as long as VDD is maintained within specification (3.0V–3.6V) and ambient temperature remains within –40°C to +85°C. This eliminates refresh overhead, simplifies system design, and guarantees deterministic access timing.
Can the 71V424L15PHGI be used with 5V-tolerant microcontrollers?
The 71V424L15PHGI has TTL-compatible inputs (VIH = 2.0V min, VIL = 0.8V max) and outputs (VOH ≥ 2.4V, VOL ≤ 0.4V at specified loads), allowing safe interfacing with 5V-tolerant MCU I/Os-provided the MCU's 5V outputs do not exceed the 71V424L15PHGI's absolute maximum input voltage of VDD + 0.5V (≤ 4.1V). Level-shifting is recommended if MCU outputs swing to full 5V.
What is the meaning of "L" in the 71V424L15PHGI part number?
The "L" in 71V424L15PHGI denotes the low-power variant of the IDT71V424 family. Compared to the "S" (standard power) version, the "L" variant reduces full standby current (ISB1) from 20mA to 10mA and dynamic standby current (ISB) by ~5–10mA across all speed grades-achieving this through optimized internal biasing without sacrificing access speed or noise immunity.
Is the 71V424L15PHGI RoHS-compliant and halogen-free?
Yes, the 71V424L15PHGI is a Renesas Green (RoHS-compliant and halogen-free) device, as confirmed in the May 2021 rebranded datasheet (page 8, Ordering Information footnote). It meets JEDEC J-STD-609 Category 1a for moisture sensitivity (MSL3) and carries no lead, cadmium, mercury, hexavalent chromium, PBB, or PBDE substances above threshold limits.
71V424L15PHGI 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:
- 15ns
- Access Time:
- 15 ns
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 44-TSOP II
71V424L15PHGI FAQ
1.How can I place an order for 71V424L15PHGI through Aetrix?
Please submit a Request for Quotation (RFQ) for 71V424L15PHGI 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 71V424L15PHGI reliable?
The price and inventory of 71V424L15PHGI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 71V424L15PHGI is usually 5 days.
3.What payment methods are accepted for 71V424L15PHGI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 71V424L15PHGI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 71V424L15PHGI?
71V424L15PHGI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 71V424L15PHGI 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 71V424L15PHGI?
For technical support, including 71V424L15PHGI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 71V424L15PHGI requirements.
6.How does Aetrix verify that 71V424L15PHGI is sourced from the original manufacturer or authorized distributors?
All 71V424L15PHGI 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 71V424L15PHGI meets industry standards.
7.What is the process for return or replacement of 71V424L15PHGI?
All 71V424L15PHGI units undergo pre-shipment inspection (PSI). If there is an issue with 71V424L15PHGI, 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 71V424L15PHGI part is unused and in its original packaging.
Return procedure for 71V424L15PHGI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
71V424L15PHGI Tags
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