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Renesas IDT71V416VS12PHGI8
- Part No.:
- IDT71V416VS12PHGI8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 44-TSOP (0.400", 10.16mm Width)
- Datasheet:
-
IDT71V416VS12PHGI8.pdf
- Description:
- IC SRAM 4MBIT PARALLEL 44TSOP II
- Quantity:
- Payment:
- Shipping:
Inventory:1,908
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Product details
Overview
IDT71V416VS12PHGI8 from Integrated Device Technology is a 4,194,304-bit (256K × 16) high-speed CMOS static RAM operating from a single 3.3 V supply, with 12 ns access time, JEDEC-compliant center power/ground pinout, and LVTTL-compatible bidirectional I/Os. 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 IDT71V416VS12PHGI8 datasheet, IDT71V416VS12PHGI8 pinout, IDT71V416VS12PHGI8 application, or IDT71V416VS12PHGI8 equivalent, key selection criteria include 12 ns read cycle time, dual byte enable (BHE/BLE), SOJ-44 package compatibility, and industrial-grade reliability under sustained asynchronous operation without refresh.
Technical Context
The IDT71V416VS12PHGI8 implements fully static asynchronous circuitry-no clocks or refresh required-with independent high- and low-byte write enables (BHE/BLE) enabling selective 8-bit updates. Its address decoding supports 18-bit addressing (A0–A17), and output enable (OE) delivers 5 ns output valid timing.
Operation relies on three active-low control signals-CS, WE, and OE-with truth-table-defined states for word/byte reads/writes and high-impedance outputs. The device uses center-power/ground pinout (pins 13/27 = VDD, pins 11/34 = VSS) to minimize simultaneous switching noise in dense PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4,194,304 bits (256K × 16), supporting 16-bit data bus interfacing without external multiplexing |
| Access Time (tAA) | 12 ns max - defines minimum address hold before valid data appears on I/O bus |
| Read Cycle Time (tRC) | 12 ns max - sets shortest interval between successive read operations |
| Supply Voltage | 3.0 V to 3.6 V - compatible with standard 3.3 V logic rails; no level-shifting needed |
| Operating Temperature | –40°C to +85°C - qualified for industrial environments including motor drives and base station controllers |
| I/O Interface | LVTTL-compatible - ensures direct connection to FPGA I/O banks and microcontroller data buses |
| Standby Current (ISB1) | 20 mA max - enables low-power retention during system sleep modes |
Pinout & Package
Package: 44-pin, 400-mil plastic SOJ (SO44-1), lead-free and RoHS-compliant (G-suffix), industrial temperature grade.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit address bus for full 256K-word addressing; no internal address latching required |
| CS | Chip Select | Active-low global enable; deassertion places all outputs in high-Z state |
| WE | Write Enable | Active-low control for write cycles; combined with BHE/BLE to define byte/word write scope |
| OE | Output Enable | Active-low control for read data output; enables fast 5 ns output valid timing |
| BHE, BLE | Byte Enable | Independent active-low controls for upper (I/O8–I/O15) and lower (I/O0–I/O7) byte lanes |
| I/O0–I/O15 | Bidirectional Data | 16-bit LVTTL I/O bus shared for read data output and write data input |
| VDD (Pins 13, 27) | Power Supply | 3.3 V core supply; dual VDD pins reduce IR drop and improve noise immunity |
| VSS (Pins 11, 34) | Ground | Ground reference; dual VSS pins support JEDEC center-GND layout for signal integrity |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC Center Power/Ground Pinout | Reduces simultaneous switching noise by symmetrically distributing VDD/VSS around perimeter, critical for EMI-sensitive telecom applications |
| Dual Byte Enables (BHE/BLE) | Enables partial-word writes without read-modify-write cycles-essential for efficient FIFO and descriptor table updates |
| 5 ns Output Enable Propagation | Minimizes read latency in burst-access scenarios such as DSP instruction fetch or DMA co-processor handshaking |
| Single 3.3 V Supply Operation | Eliminates need for auxiliary voltage regulators or level shifters, simplifying power delivery in space-constrained modules |
| Industrial Temperature Range | Validated operation from –40°C to +85°C ensures reliability in uncontrolled enclosures like outdoor routers and PLC backplanes |
Applications
| Network Packet Buffering | FPGA Configuration Storage |
|---|---|
Use Scenario: Temporary storage of Ethernet frames in Layer 2 switches prior to forwarding decision and egress scheduling. IC Role / Device Role / Timing Role: Asynchronous SRAM providing zero-wait-state, non-refreshed 16-bit data buffering with deterministic 12 ns access. Use Value: Enables line-rate packet buffering at 1 Gbps+ with minimal latency jitter due to fixed tAA and tRC timing. | Use Scenario: Storing configuration bitstreams for Xilinx Spartan or Intel Cyclone FPGAs during power-up or dynamic reconfiguration. IC Role / Device Role / Timing Role: Non-volatile boot memory interface delivering parallel configuration data at FPGA clock rates up to 83 MHz. Use Value: Reduces FPGA configuration time by >40% versus serial PROMs, accelerating system boot and field-upgrade cycles. |
| Industrial Motion Controller Memory | Medical Imaging Data Cache |
Use Scenario: Real-time interpolation buffer storing trajectory points for multi-axis servo drives in CNC machines. IC Role / Device Role / Timing Role: High-reliability SRAM holding motion profile data accessed synchronously by dedicated motion ASICs. Use Value: Guarantees sub-microsecond access consistency across –40°C to +85°C ambient, preventing position error accumulation. | Use Scenario: Intermediate frame storage in ultrasound beamformers where raw ADC samples must be buffered before digital beam synthesis. IC Role / Device Role / Timing Role: Low-noise, high-bandwidth memory interfaced directly to 16-bit ADC output buses and DSP input ports. Use Value: Supports 20+ MS/s sustained write/read throughput with <1 ns timing skew across all 16 data lines. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed asynchronous SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY62167EV30LL-45ZSXI | 4 Mbit (256K × 16), 45 ns access, 3.3 V, SOJ-44, but slower and higher standby current (50 µA vs 20 mA ISB1) | Suitable only for non-real-time buffering where latency >40 ns is acceptable | Select only if cost sensitivity outweighs timing and power requirements |
| AS6C4008-12PIN | 4 Mbit (256K × 16), 12 ns access, 3.3 V, SOJ-44, but commercial temp only (0°C to +70°C) and no BHE/BLE | Limited to office equipment or consumer electronics; lacks industrial qualification and byte-select capability | Use only in thermally controlled environments with full-word write constraints |
Compared with CY62167EV30LL-45ZSXI and AS6C4008-12PIN, the IDT71V416VS12PHGI8 uniquely combines industrial temperature rating, 12 ns performance, dual byte enables, and JEDEC noise-optimized pinout-making it the only choice for deterministic real-time embedded memory in harsh environments.
Availability
IDT71V416VS12PHGI8 is available at Aetrix Electronics and suitable for industrial motion control, medical imaging subsystems, and telecom packet buffering requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for IDT71V416VS12PHGI8 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, designs high-performance timing, memory, and interface ICs for communications, computing, and industrial markets.
The IDT71V416VS12PHGI8 belongs to IDT's legacy high-speed CMOS SRAM product line, engineered specifically for deterministic, low-latency, asynchronous memory interfacing in real-time embedded systems.
FAQ
What is the maximum operating frequency supported by the IDT71V416VS12PHGI8?
The IDT71V416VS12PHGI8 does not use a clock and therefore has no operating frequency specification. Its performance is defined by timing parameters: 12 ns read cycle time (tRC) and 12 ns address access time (tAA). These values set the maximum achievable data throughput in asynchronous systems-e.g., up to ~83 million words per second in ideal burst-read conditions. The IDT71V416VS12PHGI8 relies entirely on control signal edge timing rather than periodic clocking.
Does the IDT71V416VS12PHGI8 require refresh circuitry or external clock signals?
No, the IDT71V416VS12PHGI8 is a fully static RAM and requires neither refresh circuitry nor external clock signals. Its internal design uses static CMOS latches for data storage, enabling indefinite data retention as long as power is applied and CS remains asserted. This eliminates timing-critical refresh overhead, making the IDT71V416VS12PHGI8 ideal for safety-critical and deterministic real-time applications where predictability is essential.
Can the IDT71V416VS12PHGI8 be used with 5 V logic interfaces?
No, the IDT71V416VS12PHGI8 is strictly a 3.3 V LVTTL device and is not 5 V tolerant. Its absolute maximum input voltage is VDD + 0.5 V (i.e., ≤4.1 V), and VIH threshold is specified from 2.0 V to VDD + 0.3 V. Direct connection to 5 V logic will exceed voltage ratings and risk permanent damage. Interfacing with 5 V systems requires level translation-e.g., TI SN74AVC4T245 or similar dual-supply translators-when using the IDT71V416VS12PHGI8.
What is the function of pins 28 and 44 on the IDT71V416VS12PHGI8 SOJ package?
Pin 28 is marked NC* (No Connect, optional VSS) and may be left unconnected or tied to ground (VSS) for improved noise immunity-designers should follow board-level EMI requirements. Pin 44 is A17, the most significant address bit for accessing the full 256K-word space. Neither pin serves as power or control; misinterpreting pin 28 as mandatory VSS or omitting A17 will result in incomplete memory addressing or degraded signal integrity in the IDT71V416VS12PHGI8 implementation.
How does the IDT71V416VS12PHGI8 handle simultaneous byte and word operations?
The IDT71V416VS12PHGI8 supports concurrent byte and word operations via independent BHE and BLE controls: asserting only BHE enables writes to I/O8–I/O15 (high byte); asserting only BLE enables writes to I/O0–I/O7 (low byte); asserting both performs full 16-bit word writes. Reads behave similarly-OE with BHE/BLE selects which byte(s) drive the bus. This eliminates read-modify-write overhead, allowing atomic byte updates in the IDT71V416VS12PHGI8 without disturbing adjacent data.
IDT71V416VS12PHGI8 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:
- 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
IDT71V416VS12PHGI8 FAQ
1.How can I place an order for IDT71V416VS12PHGI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for IDT71V416VS12PHGI8 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 IDT71V416VS12PHGI8 reliable?
The price and inventory of IDT71V416VS12PHGI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IDT71V416VS12PHGI8 is usually 5 days.
3.What payment methods are accepted for IDT71V416VS12PHGI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IDT71V416VS12PHGI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IDT71V416VS12PHGI8?
IDT71V416VS12PHGI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IDT71V416VS12PHGI8 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 IDT71V416VS12PHGI8?
For technical support, including IDT71V416VS12PHGI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IDT71V416VS12PHGI8 requirements.
6.How does Aetrix verify that IDT71V416VS12PHGI8 is sourced from the original manufacturer or authorized distributors?
All IDT71V416VS12PHGI8 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 IDT71V416VS12PHGI8 meets industry standards.
7.What is the process for return or replacement of IDT71V416VS12PHGI8?
All IDT71V416VS12PHGI8 units undergo pre-shipment inspection (PSI). If there is an issue with IDT71V416VS12PHGI8, 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 IDT71V416VS12PHGI8 part is unused and in its original packaging.
Return procedure for IDT71V416VS12PHGI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
IDT71V416VS12PHGI8 Tags
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