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Renesas IDT71V416VS15Y
- Part No.:
- IDT71V416VS15Y
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 44-BSOJ (0.400", 10.16mm Width)
- Datasheet:
-
IDT71V416VS15Y.pdf
- Description:
- IC SRAM 4MBIT PARALLEL 44SOJ
- Quantity:
- Payment:
- Shipping:
Inventory:1,556
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Product details
Overview
IDT71V416VS from Integrated Device Technology is a 4-Mbit (256K × 16) high-speed CMOS static RAM with 10 ns access time, single 3.3 V supply operation, and JEDEC-compliant center power/ground pinout for noise reduction. It supports byte-wide and word-wide read/write operations via independent BHE/BLE controls and is used in embedded controllers, network packet buffers, and industrial PLC memory subsystems.
For engineers reviewing the IDT71V416VS datasheet, IDT71V416VS pinout, IDT71V416VS application, or IDT71V416VS equivalent, key selection criteria include its 10 ns commercial-grade timing, LVTTL-compatible I/O, low-Z output enable response (5 ns), and SOJ/TSOP/BGA package options - all critical for real-time data buffering and legacy bus interface designs.
Technical Context
The IDT71V416VS implements fully static asynchronous architecture with no clocks or refresh required. Its address decoding uses row/column logic to access the 4,194,304-bit memory array, and bidirectional I/O drivers support simultaneous high- and low-byte enables for flexible 8-bit or 16-bit data transfers.
All control inputs (CS, OE, WE, BHE, BLE) are LVTTL-compatible with VIH ≥ 2.0 V and VIL ≤ 0.8 V at VDD = 3.3 V. Output drive strength meets IOH = –4 mA and IOL = 8 mA specifications, ensuring reliable interfacing with 3.3 V microcontrollers and FPGAs without level-shifting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4,194,304 bits (256K × 16) - supports full 16-bit data bus without external multiplexing |
| Access Time (tAA) | 10 ns max - enables direct interface with 100 MHz CPU buses requiring sub-10 ns setup |
| Supply Voltage | 3.0–3.6 V - compatible with standard 3.3 V system rails and tolerant of ±10% regulation variation |
| Input/Output Compatibility | LVTTL - interoperable with Intel 80x86, ARM7/9, and Xilinx Spartan-3 FPGA I/O banks |
| Standby Current (ISB1) | 20 mA max - ensures low-power retention during processor sleep modes in portable instrumentation |
| Operating Temperature | 0°C to +70°C - qualified for commercial-grade industrial control panels and telecom line cards |
| Package Type | 44-pin, 400-mil SOJ (SO44-1) - surface-mount compatible with standard reflow profiles and automated assembly |
Pinout & Package
Package: 44-pin, 400-mil plastic SOJ (SO44-1), JEDEC-standard footprint with center VDD/VSS pins for reduced switching noise.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit address bus supporting full 256K-word addressing; no address multiplexing required |
| CS | Chip Select | Active-low enable controlling device participation in memory map; tACS = 10 ns ensures fast bank switching |
| OE | Output Enable | Active-low control enabling tristate output drivers; tOE = 5 ns allows rapid data sampling in burst reads |
| WE | Write Enable | Active-low signal initiating write cycle; tWP = 8 ns minimum enables tight timing with synchronous peripherals |
| BHE / BLE | Byte Enable Controls | Independent high/low byte gating - permits 8-bit peripheral access on 16-bit bus without glue logic |
| I/O0–I/O15 | Bidirectional Data Bus | 16-bit LVTTL I/O with 8 mA sink/4 mA source drive - eliminates need for external bus transceivers |
| VDD / VSS | Power / Ground | Center-placed pins (Pins 12 & 33) reduce ground bounce and improve signal integrity in high-speed operation |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC Center Power/Ground Pinout | Reduces simultaneous switching noise by >30% compared to corner-pin layouts, critical for mixed-signal systems |
| Separate Byte Enables (BHE/BLE) | Enables partial writes to upper or lower byte without disturbing adjacent data - essential for 8-bit peripheral coexistence |
| 5 ns Output Enable Response | Supports interleaved read cycles with <10 ns turnaround, improving throughput in FIFO-style buffer applications |
| Single 3.3 V Supply Operation | Eliminates dual-rail design complexity and associated decoupling overhead in compact PCB layouts |
| Full Static Asynchronous Architecture | Removes clock tree, refresh controller, and associated timing constraints - simplifies integration into legacy bus systems |
Applications
| Industrial PLC Data Buffer | Network Packet Memory |
|---|---|
Use Scenario: Storing real-time I/O scan data between CPU execution cycles in programmable logic controllers. IC Role / Device Role / Timing Role: Primary working memory holding input image tables and output latch registers with deterministic 10 ns access. Use Value: Eliminates wait states on 16-bit ISA or VMEbus backplanes, sustaining >90 MB/s sustained read throughput under burst load. |
Use Scenario: Temporary storage of Ethernet frame payloads in Layer 2 switch ASIC support circuitry. IC Role / Device Role / Timing Role: Dual-port accessible buffer staging packets before CRC validation and forwarding decisions. Use Value: 5 ns OE response enables pipelined read-after-write sequences, reducing per-packet latency by up to 12 ns. |
| Medical Imaging Frame Store | Legacy Bus Interface Adapter |
Use Scenario: Holding digitized ultrasound scan lines prior to DSP processing in portable diagnostic equipment. IC Role / Device Role / Timing Role: High-reliability SRAM providing glitch-free pixel data transfer to FPGA-based video pipeline. Use Value: ISB1 ≤ 20 mA ensures battery runtime extension during standby imaging modes without compromising speed. |
Use Scenario: Bridging 16-bit ISA bus peripherals to modern microcontroller-based host systems. IC Role / Device Role / Timing Role: Memory-mapped register file emulating legacy peripheral behavior with precise timing alignment. Use Value: Matched tAA/tRC = 10 ns satisfies ISA bus timing budgets without added wait-state logic. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed static RAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY62167EV30LL-10ZSXI | 16 Mbit (1M × 16), 10 ns, 3.3 V, TSOP-44 - larger density but higher ICC (220 mA vs. 200 mA) | Requires PCB redesign for wider address bus; suitable only when >4 Mbit capacity is mandatory | Select only if future-proofing for larger firmware images or multi-channel buffering is required |
| AS6C4008-10PCN | 4 Mbit (256K × 16), 10 ns, 3.3 V, SOJ-44 - identical density/timing but no BHE/BLE; byte masking requires external logic | Lacks native byte-enable functionality; increases component count and layout area for 8-bit peripheral support | Choose only for cost-sensitive designs where byte-level writes are not required |
Compared with CY62167EV30LL-10ZSXI and AS6C4008-10PCN, the IDT71V416VS uniquely delivers JEDEC-compliant noise-reducing pinout, integrated BHE/BLE, and proven reliability in long-lifecycle industrial deployments - making it optimal for space-constrained, timing-critical legacy bus interfaces.
Availability
IDT71V416VS is available at Aetrix Electronics and suitable for industrial PLCs, network packet buffers, medical imaging subsystems, and legacy bus interface adapters requiring stable component supply across extended production lifecycles.
Supply support for IDT71V416VS 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
Integrated Device Technology (IDT), now part of Renesas Electronics, is a fabless semiconductor company specializing in timing, memory, and interface solutions for communications, computing, and industrial markets.
The IDT71V416VS belongs to IDT's high-speed CMOS SRAM product line, designed specifically for deterministic, low-latency memory interfacing in real-time embedded systems where refresh-free operation and LVTTL compatibility are mandatory.
FAQ
What is the operating temperature range for the IDT71V416VS?
The IDT71V416VS is rated for commercial temperature operation from 0°C to +70°C. This range is validated per the datasheet's Recommended Operating Conditions table and applies to all AC and DC parameters including tAA = 10 ns and ISB1 ≤ 20 mA. It is not qualified for industrial –40°C to +85°C operation - that specification applies to the IDT71V416VL variant.
Does the IDT71V416VS require a refresh circuit or clock signal?
No, the IDT71V416VS uses fully static asynchronous CMOS architecture and requires no clock, refresh controller, or periodic access to retain data. This is confirmed in the Functional Block Diagram and Description section, which explicitly states "fully static asynchronous circuitry is used, requiring no clocks or refresh for operation."
Can the IDT71V416VS be used with a 5 V microcontroller interface?
No - the IDT71V416VS is strictly a 3.3 V LVTTL device with VIH(max) = VDD + 0.3 V and VIL(min) = –0.3 V. Direct connection to 5 V logic violates Absolute Maximum Ratings (VIN ≤ VDD + 0.5 V) and risks permanent damage. Level translation is mandatory for 5 V system integration.
What is the meaning of the 'S' and 'Y' suffixes in IDT71V416VS?
In the ordering nomenclature, 'S' denotes Standard Power (vs. 'L' for Low Power), and 'Y' indicates the 44-pin, 400-mil SOJ package (SO44-1). This mapping is defined in the Ordering Information diagram (DSC-6478/00, Figure 11a), where 'Y' is explicitly assigned to the SOJ variant.
Is pin 28 on the IDT71V416VS functional or a no-connect?
Pin 28 is designated NC* (No Connect) per the Pin Descriptions table and Top View diagram. The asterisk footnote confirms it may be left unconnected or tied to VSS - no internal circuitry connects to this pin, and it carries no timing, power, or signal function in the IDT71V416VS.
IDT71V416VS15Y Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 44-BSOJ (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:
- 256K x 16
- 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-SOJ
IDT71V416VS15Y FAQ
1.How can I place an order for IDT71V416VS15Y through Aetrix?
Please submit a Request for Quotation (RFQ) for IDT71V416VS15Y 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 IDT71V416VS15Y reliable?
The price and inventory of IDT71V416VS15Y are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IDT71V416VS15Y is usually 5 days.
3.What payment methods are accepted for IDT71V416VS15Y?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IDT71V416VS15Y transactions.
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4.How is shipping managed for IDT71V416VS15Y?
IDT71V416VS15Y orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IDT71V416VS15Y 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 IDT71V416VS15Y?
For technical support, including IDT71V416VS15Y datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IDT71V416VS15Y requirements.
6.How does Aetrix verify that IDT71V416VS15Y is sourced from the original manufacturer or authorized distributors?
All IDT71V416VS15Y 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 IDT71V416VS15Y meets industry standards.
7.What is the process for return or replacement of IDT71V416VS15Y?
All IDT71V416VS15Y units undergo pre-shipment inspection (PSI). If there is an issue with IDT71V416VS15Y, 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 IDT71V416VS15Y part is unused and in its original packaging.
Return procedure for IDT71V416VS15Y:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
IDT71V416VS15Y Tags
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M24C02-WMN6TP
STMicroelectronics
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AT24C02C-XHM-T
Microchip Technology
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AT21CS01-STUM10-T
Microchip Technology
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24LC01BT-I/OT
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M24C02-FMC6TG
STMicroelectronics
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AT24CS02-SSHM-T
Microchip Technology
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93LC46BT-I/OT
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AT24C04C-SSHM-T
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24LC01BT-I/SN
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24AA02UIDT-I/OT
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AT24C08C-STUM-T
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