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Renesas IDT71V416VS15PHGI8
- Part No.:
- IDT71V416VS15PHGI8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 44-TSOP (0.400", 10.16mm Width)
- Datasheet:
-
IDT71V416VS15PHGI8.pdf
- Description:
- IC SRAM 4MBIT PARALLEL 44TSOP II
- Quantity:
- Payment:
- Shipping:
Inventory:1,183
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Product details
Overview
IDT71V416VS15PHGI8 from Integrated Device Technology is a 4-Mbit (256K × 16) high-speed CMOS static RAM with 15 ns access time, single 3.3 V supply operation, LVTTL-compatible I/O, and JEDEC-standard center power/ground pinout for noise reduction. It supports byte-wide and word-wide read/write operations in industrial temperature range (–40°C to +85°C) and is used in real-time data buffering for network packet processors and FPGA-based control systems.
For engineers reviewing the IDT71V416VS15PHGI8 datasheet, IDT71V416VS15PHGI8 pinout, IDT71V416VS15PHGI8 application, or IDT71V416VS15PHGI8 equivalent, key selection criteria include 15 ns tAA/tRC timing, BHE/BLE byte enable support, SOJ-44 package compatibility, and industrial-grade reliability under sustained asynchronous memory access.
Technical Context
The IDT71V416VS15PHGI8 implements fully static asynchronous circuitry-no clocks or refresh required-and uses dual-byte enable (BHE/BLE) to support independent 8-bit accesses within the 16-bit data bus. Its address decoding covers A0–A17 (18-bit), enabling full 256K-word addressing without external logic.
Operation relies on three independent control signals: CS (chip select), OE (output enable with 5 ns tOE), and WE (write enable), allowing flexible read/write sequencing including CS-controlled, WE-controlled, and byte-enable-controlled write cycles per JEDEC-compliant timing waveforms.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4,194,304 bits (256K × 16), supporting 16-bit parallel data paths without multiplexing |
| Access Time (tAA) | 15 ns max - determines minimum address hold-to-data-valid latency in read cycles |
| Cycle Time (tRC) | 15 ns max - sets maximum sustained random-access throughput of 66.7 MHz |
| Supply Voltage | 3.0 V to 3.6 V - compatible with standard 3.3 V logic rails and tolerant of ±10% regulation variation |
| I/O Interface | LVTTL-compatible bidirectional I/O0–I/O15 - ensures direct connection to 3.3 V FPGAs, ASICs, and microcontrollers |
| Operating Temperature | –40°C to +85°C - qualified for industrial embedded systems with extended thermal cycling requirements |
| Power Dissipation | ISB1 ≤ 20 mA (full standby), ICC ≤ 170 mA (dynamic, fMAX) - enables low-heat memory subsystems in dense PCB layouts |
Pinout & Package
Package: 44-pin, 400-mil plastic SOJ (SO44-1), JEDEC-standard footprint with center VDD/VSS pins for reduced simultaneous switching noise.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit row/column address bus; fully decoded internally to access all 256K words |
| I/O0–I/O7 | Low-Byte Data I/O | Bidirectional 8-bit data path enabled by BLE; isolated from high byte during partial writes |
| I/O8–I/O15 | High-Byte Data I/O | Bidirectional 8-bit data path enabled by BHE; supports independent high-byte updates |
| CS | Chip Select | Active-low global enable; device enters standby (high-Z I/O, low ISB) when deasserted |
| OE | Output Enable | Active-low output gate; enables read data drive with 5 ns tOE, independent of CS timing |
| WE | Write Enable | Active-low write strobe; initiates write cycle with tWP ≥ 10 ns minimum pulse width |
| BLE | Low-Byte Enable | Active-low control for I/O0–I/O7; allows 8-bit writes without disturbing high byte |
| BHE | High-Byte Enable | Active-low control for I/O8–I/O15; enables selective high-byte updates |
| VDD | Power Supply | 3.3 V core and I/O supply; two dedicated pins (pins 12 & 33) reduce IR drop and noise coupling |
| VSS | Ground | Reference ground; two dedicated pins (pins 11 & 34) improve return path integrity |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC Center Power/Ground Pinout | Reduces simultaneous switching noise (SSN) by symmetrically distributing VDD/VSS across package centerline |
| Dual Byte Enable (BHE/BLE) | Enables true 8-bit sub-word writes without read-modify-write overhead or bus contention |
| 5 ns Output Enable Propagation | Minimizes read latency in burst-access systems where OE is toggled per word (e.g., DMA controllers) |
| Full Standby Current ≤ 20 mA | Supports low-power sleep modes in battery-backed or energy-constrained industrial controllers |
| Industrial Temperature Qualification | Guarantees timing and functionality across –40°C to +85°C without derating or thermal management |
Applications
| Network Packet Buffering | FPGA Configuration Storage |
|---|---|
Use Scenario: Temporary storage of ingress/egress Ethernet frames in Layer 2 switches before forwarding decision and egress scheduling. IC Role / Device Role / Timing Role: Asynchronous 16-bit SRAM buffer interfacing directly to MAC controller's parallel data bus with no wait states at 66.7 MHz effective throughput. Use Value: 15 ns tAA enables sub-100 ns frame header lookup and store-forward latency, critical for cut-through switching performance. | Use Scenario: Holding configuration bitstreams for Xilinx Spartan or Intel MAX 10 FPGAs during cold-start or dynamic reconfiguration. IC Role / Device Role / Timing Role: Non-volatile boot memory replacement; provides fast parallel loading of 256K×16 configuration words into FPGA configuration logic. Use Value: LVTTL-compatible I/O and 15 ns access allow direct connection to FPGA configuration pins without level-shifting or timing margin loss. |
| Industrial PLC Data Logging | DSP-Based Motor Control |
Use Scenario: Cyclic acquisition and timestamped storage of sensor inputs (temperature, pressure, current) in programmable logic controllers operating in harsh factory environments. IC Role / Device Role / Timing Role: Real-time scratchpad memory for deterministic cyclic data capture; accessed via microcontroller's external memory interface with CS/OE/WE handshaking. Use Value: Industrial temperature rating (–40°C to +85°C) and 20 mA full-standby current ensure reliable operation during extended unattended logging cycles. | Use Scenario: Storing coefficient tables, filter history, and PWM update buffers in real-time motor control loops running at >10 kHz update rates. IC Role / Device Role / Timing Role: Low-latency data memory for TI C2000 or ST STM32H7 DSP cores executing interrupt-driven control algorithms. Use Value: 15 ns tRC and byte-enable capability allow concurrent coefficient reads and history writes without pipeline stalls or bus arbitration delays. |
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 (256K × 16), 15 ns, 3.3 V, SOJ-44, but uses different byte-enable polarity (active-high BHE/BLE vs. active-low) | Requires inverted byte-enable logic or external inverters; not drop-in compatible | Select only if board-level redesign accommodates active-high control signaling |
| AS6C4008-15PIN | 4 Mbit (256K × 16), 15 ns, 3.3 V, SOJ-44, but lacks BHE/BLE - supports word-only access | No byte-select capability; forces full 16-bit writes for any data update | Choose only when application never requires partial-word writes and layout space permits SOJ-44 footprint |
Compared with CY62148EV30LL-15ZSXI and AS6C4008-15PIN, the IDT71V416VS15PHGI8 uniquely delivers active-low BHE/BLE with JEDEC-compliant pinout and guaranteed industrial temperature operation - essential for deterministic partial-word access in safety-critical control systems.
Availability
IDT71V416VS15PHGI8 is available at Aetrix Electronics and suitable for industrial PLCs, FPGA configuration systems, network packet buffers, and DSP-based motor controllers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for IDT71V416VS15PHGI8 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, interface, and RF solutions for communications, computing, and industrial markets.
The IDT71V416VS15PHGI8 belongs to IDT's legacy high-speed parallel SRAM product line, designed specifically for deterministic, low-latency data buffering in industrial and networking equipment where asynchronous access and byte-select granularity are mandatory.
FAQ
What is the operating temperature range specified for the IDT71V416VS15PHGI8?
The IDT71V416VS15PHGI8 is rated for industrial temperature operation from –40°C to +85°C. This specification is guaranteed across all AC and DC parameters in the datasheet, including 15 ns access time, 20 mA full-standby current, and LVTTL-compatible voltage thresholds. No derating is required within this range, making it suitable for deployment in factory automation, outdoor telecom infrastructure, and transportation control systems.
Does the IDT71V416VS15PHGI8 require a clock signal or refresh circuitry?
No, the IDT71V416VS15PHGI8 uses fully static CMOS memory cells and asynchronous control architecture - it operates without any clock input or periodic refresh cycles. All timing is governed solely by CS, OE, WE, BHE, and BLE signal transitions. This eliminates timing-critical clock distribution and simplifies integration with microcontrollers, FPGAs, and ASICs lacking dedicated memory controllers.
Can the IDT71V416VS15PHGI8 perform byte-wide writes without affecting the other byte?
Yes, the IDT71V416VS15PHGI8 supports true independent byte writes using its dedicated BHE (high-byte enable) and BLE (low-byte enable) inputs. When only BLE is asserted (low), only I/O0–I/O7 are written; when only BHE is asserted, only I/O8–I/O15 are updated. The unselected byte retains its prior data, eliminating read-modify-write sequences and reducing bus traffic in mixed-data-width applications.
What package type does the IDT71V416VS15PHGI8 use, and is it RoHS compliant?
The IDT71V416VS15PHGI8 uses a 44-pin, 400-mil plastic SOJ (SO44-1) package with JEDEC-standard pinout. The "G" suffix in the part number confirms compliance with RoHS Directive 2011/65/EU and restriction of hazardous substances. Lead finish is matte tin, and the package meets IPC/JEDEC J-STD-020 moisture sensitivity level 3 (MSL-3) requirements.
How does the JEDEC center power/ground pinout benefit system design with the IDT71V416VS15PHGI8?
The JEDEC center power/ground pinout places VDD and VSS pins symmetrically near the package center (pins 12/33 and 11/34), minimizing loop inductance and reducing simultaneous switching noise (SSN) during high-speed I/O transitions. This layout improves signal integrity on dense PCBs, lowers EMI emissions, and enhances timing margin stability - especially critical in multi-SRAM systems or when interfacing with noise-sensitive analog or RF sections.
IDT71V416VS15PHGI8 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:
- 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 44-TSOP II
IDT71V416VS15PHGI8 FAQ
1.How can I place an order for IDT71V416VS15PHGI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for IDT71V416VS15PHGI8 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 IDT71V416VS15PHGI8 reliable?
The price and inventory of IDT71V416VS15PHGI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IDT71V416VS15PHGI8 is usually 5 days.
3.What payment methods are accepted for IDT71V416VS15PHGI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IDT71V416VS15PHGI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IDT71V416VS15PHGI8?
IDT71V416VS15PHGI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IDT71V416VS15PHGI8 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 IDT71V416VS15PHGI8?
For technical support, including IDT71V416VS15PHGI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IDT71V416VS15PHGI8 requirements.
6.How does Aetrix verify that IDT71V416VS15PHGI8 is sourced from the original manufacturer or authorized distributors?
All IDT71V416VS15PHGI8 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 IDT71V416VS15PHGI8 meets industry standards.
7.What is the process for return or replacement of IDT71V416VS15PHGI8?
All IDT71V416VS15PHGI8 units undergo pre-shipment inspection (PSI). If there is an issue with IDT71V416VS15PHGI8, 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 IDT71V416VS15PHGI8 part is unused and in its original packaging.
Return procedure for IDT71V416VS15PHGI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
IDT71V416VS15PHGI8 Tags
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