My Inquiry
My Account
Renesas 71V424L12PHGI8
- Part No.:
- 71V424L12PHGI8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 44-TSOP (0.400", 10.16mm Width)
- Datasheet:
-
71V424L12PHGI8.pdf
- Description:
- IC SRAM 4MBIT PARALLEL 44TSOP II
- Quantity:
- Payment:
- Shipping:
Inventory:1,939
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
71V424L12PHGI8 from Renesas Electronics is a 4-Mbit (512K × 8) low-power, high-speed CMOS static RAM operating from a single 3.3V supply, with 12ns read/write cycle time, industrial temperature range (–40°C to +85°C), and JEDEC-compliant center-power/ground pinout. It serves as main or buffer memory in real-time embedded controllers requiring deterministic access without refresh.
For engineers reviewing the 71V424L12PHGI8 datasheet, 71V424L12PHGI8 pinout, 71V424L12PHGI8 application, or 71V424L12PHGI8 equivalent, key selection criteria include its TSOP-44 industrial-grade timing (tRC = 12ns, tAA = 12ns), low standby current (ISB1 = 10mA), TTL-compatible bidirectional I/O, and dual-control write architecture (CS + WE).
Technical Context
The 71V424L12PHGI8 implements fully static asynchronous logic with no clocks or refresh cycles required. Its address decoder drives a 4,194,304-bit memory array organized as 512K × 8, supporting concurrent read/write operations via independent Chip Select (CS), Output Enable (OE), and Write Enable (WE) control lines.
It uses CMOS technology optimized for low dynamic power (ICC = 155mA max at fMAX) and ultra-low static standby (ISB1 = 10mA), with input/output pins compliant to TTL voltage thresholds (VIH ≥ 2.0V, VIL ≤ 0.8V) and guaranteed 5ns OE-to-output valid delay (tOE = 6ns max) under industrial conditions.
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 - enables direct interface with 80 MHz microcontrollers without wait states |
| Supply Voltage | 3.0–3.6 V - compatible with standard 3.3V logic rails and LDO outputs |
| Operating Temperature | –40°C to +85°C - qualified for industrial automation and transportation control systems |
| Standby Current (ISB1) | 10 mA max - reduces system power during idle periods in battery-backed or energy-sensitive designs |
| I/O Interface | TTL-compatible bidirectional - eliminates level-shifter requirements when interfacing with legacy 3.3V/5V mixed-signal SoCs |
| Package | 44-pin TSOP Type II (PHG44) - surface-mount footprint with 0.8mm pitch, suitable for high-density PCB layouts |
Pinout & Package
71V424L12PHGI8 is housed in a 44-pin, 400-mil TSOP Type II package (PHG44) with JEDEC-standard center-power/ground pinout for noise reduction. Pin assignments are validated per Renesas datasheet drawing 3622 drw 11.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A18 | Address Inputs | 19-bit address bus supporting full 512K-word addressing; all inputs are TTL-compatible |
| CS | Chip Select | Active-low enable controlling device activation; deassertion places outputs in high-Z and reduces ICC to ISB/ISB1 |
| OE | Output Enable | Active-low control for output drivers; allows read data to appear on I/O0–I/O7 within 6ns (tOE) |
| WE | Write Enable | Active-low signal initiating write cycle; combined with CS defines write window (tWP ≥ 8ns) |
| I/O0–I/O7 | Bidirectional Data | 8-bit shared data bus; direction controlled by CS/OE/WE state per truth table (3622 tbl 01) |
| VDD | Power Supply | 3.3V core supply; two dedicated pins (pins 22 & 33) reduce IR drop and improve noise immunity |
| VSS | Ground | Ground reference; two dedicated pins (pins 21 & 32) provide low-inductance return path |
| NC | No Connect | Pins 2, 3, 19, 20, 23, 24, 25, 26, 27 - electrically isolated; must remain unconnected |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC Center Power/Ground Pinout | Reduces simultaneous switching noise (SSN) by symmetrically distributing VDD/VSS across package centerline |
| Equal Access & Cycle Times | tRC = tAA = 12ns ensures predictable timing for both read and write cycles in deterministic real-time systems |
| Low-Power Standby Mode | ISB1 = 10mA (static) enables >90% power reduction vs. active mode without sacrificing wake-up latency |
| TTL-Compatible I/O | Eliminates need for external level translators when interfacing with FPGA I/O banks or microcontroller GPIOs |
| Industrial Temperature Range | Validated operation from –40°C to +85°C supports deployment in motor drives, PLCs, and outdoor telecom equipment |
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 deployed in factory environments. IC Role / Device Role / Timing Role: Non-volatile buffer memory holding process state between scan cycles; accessed asynchronously by ARM Cortex-M7 CPU at 100+ MHz. Use Value: 12ns tAA and 12ns tRC eliminate wait states, enabling sub-10µs I/O update cycles; ISB1 = 10mA extends uptime in battery-backed configurations. | Use Scenario: Temporary storage of uncompressed 1024×768 grayscale image frames during acquisition in portable ultrasound devices. IC Role / Device Role / Timing Role: High-bandwidth frame buffer interfaced directly to image sensor controller and display processor via parallel 8-bit bus. Use Value: 512K × 8 capacity holds one full frame; TTL-compatible I/O ensures clean signal integrity at 25+ MB/s sustained throughput. |
| Railway Signaling Controller Cache | Avionics Data Logger Buffer |
Use Scenario: Caching safety-critical trackside signal status and interlocking logic results in EN 5012x-certified signaling hardware. IC Role / Device Role / Timing Role: Deterministic-access scratchpad memory for fault-tolerant dual-CPU architectures requiring lock-step verification. Use Value: Industrial temp rating (–40°C to +85°C) and 100% tested AC parameters ensure reliability under thermal cycling; center-power pinout suppresses EMI in rail EMC environments. | Use Scenario: Capturing flight sensor telemetry (accelerometer, gyroscope, pressure) at 10 kHz in DO-160G-compliant airborne data recorders. IC Role / Device Role / Timing Role: High-reliability temporary storage before compression and transfer to non-volatile flash; accessed via DMA bursts. Use Value: 44-pin TSOP package withstands vibration/shock; ISB = 50mA (dynamic standby) enables low-latency wake from sleep modes during burst acquisition. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar static RAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY62148EV30LL-45ZSXI | 4-Mbit (512K × 8), 45ns access, 2.2–3.6V supply, SOIC-32 package | Slower timing and wider voltage range; lacks TSOP-44 industrial variant | Use only where 45ns latency is acceptable and board layout accommodates SOIC-32 footprint |
| AS6C4008-12PIN | 4-Mbit (512K × 8), 12ns access, 2.7–3.6V supply, TSOP-44 package, –40°C to +85°C | Same speed and package; higher ISB1 (25mA vs. 10mA) and no center-power pinout | Acceptable for cost-sensitive industrial designs where 15mA higher standby current is tolerable |
Compared with CY62148EV30LL-45ZSXI and AS6C4008-12PIN, the 71V424L12PHGI8 delivers superior power efficiency (10mA ISB1), JEDEC-optimized noise immunity, and guaranteed 12ns timing across full industrial temperature range - making it optimal for latency- and power-constrained embedded systems.
Availability
71V424L12PHGI8 is available at Aetrix Electronics and suitable for industrial automation, medical imaging, railway signaling, and avionics applications requiring stable component supply, long-term lifecycle support, and guaranteed industrial-grade performance.
Supply support for 71V424L12PHGI8 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 markets.
The IDT71V424 family - now part of Renesas' legacy SRAM portfolio - was designed specifically for high-reliability, low-latency memory applications in real-time control systems where deterministic access and industrial environmental resilience are critical.
FAQ
What is the maximum clock frequency supported by the 71V424L12PHGI8?
The 71V424L12PHGI8 is a fully static asynchronous SRAM and does not use a clock signal. Its maximum operational speed is defined by timing parameters: tRC = 12ns minimum cycle time corresponds to an effective 83.3 MHz maximum toggle rate on address/control lines. System-level bandwidth depends on bus width and controller timing margins, not internal clocking.
Does the 71V424L12PHGI8 require refresh circuitry?
No, the 71V424L12PHGI8 is a static RAM and requires no refresh circuitry. Its fully static design uses flip-flop-based memory cells that retain data indefinitely as long as power is applied. This eliminates refresh overhead, simplifies controller design, and guarantees deterministic access timing - a key advantage over DRAM in real-time embedded systems.
Can the 71V424L12PHGI8 be used with a 5V microcontroller interface?
No - the 71V424L12PHGI8 operates exclusively from a 3.0–3.6V supply and has TTL-compatible input thresholds (VIH ≥ 2.0V, VIL ≤ 0.8V), but its outputs swing only to VOH ≈ 2.4V (min) at VDD = 3.0V. Direct connection to 5V-tolerant inputs may cause logic misreads; a level translator or 3.3V-compatible microcontroller (e.g., STM32L4, Renesas RA4M1) is required for reliable interfacing.
What is the meaning of "PHGI8" in the 71V424L12PHGI8 part number?
In 71V424L12PHGI8: "PHG" denotes 44-pin TSOP Type II package (PHG44); "I" specifies industrial temperature grade (–40°C to +85°C); "8" indicates tape-and-reel packaging (8mm carrier tape, 1000 units/reel). The "L" identifies low-power variant, and "12" is the 12ns speed grade - confirming this is the industrial-grade, low-power, TSOP-packaged, tape-and-reel version of the 71V424 family.
How does the 71V424L12PHGI8 handle bus contention during write operations?
The 71V424L12PHGI8 prevents bus contention through strict control-state dependency: I/O0–I/O7 enter high-impedance (High-Z) when CS is high (deselected) or when OE is high and WE is high (read-disabled/idle). During write (CS = L, WE = L), data drivers are enabled only after tDW (6ns min) and disabled after tWHZ (7ns max), ensuring clean transitions and eliminating overlap between driving and floating states on the shared data bus.
71V424L12PHGI8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 44-TSOP (0.400", 10.16mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- 12ns
- Access Time:
- 12 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
71V424L12PHGI8 FAQ
1.How can I place an order for 71V424L12PHGI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 71V424L12PHGI8 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 71V424L12PHGI8 reliable?
The price and inventory of 71V424L12PHGI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 71V424L12PHGI8 is usually 5 days.
3.What payment methods are accepted for 71V424L12PHGI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 71V424L12PHGI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 71V424L12PHGI8?
71V424L12PHGI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 71V424L12PHGI8 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 71V424L12PHGI8?
For technical support, including 71V424L12PHGI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 71V424L12PHGI8 requirements.
6.How does Aetrix verify that 71V424L12PHGI8 is sourced from the original manufacturer or authorized distributors?
All 71V424L12PHGI8 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 71V424L12PHGI8 meets industry standards.
7.What is the process for return or replacement of 71V424L12PHGI8?
All 71V424L12PHGI8 units undergo pre-shipment inspection (PSI). If there is an issue with 71V424L12PHGI8, 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 71V424L12PHGI8 part is unused and in its original packaging.
Return procedure for 71V424L12PHGI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
71V424L12PHGI8 Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
