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Renesas IDT71V416VS12PHG
- Part No.:
- IDT71V416VS12PHG
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 44-TSOP (0.400", 10.16mm Width)
- Datasheet:
-
IDT71V416VS12PHG.pdf
- Description:
- IC SRAM 4MBIT PARALLEL 44TSOP II
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
IDT71V416VS12PHG from Integrated Device Technology is a 4-Mbit (256K × 16) high-speed CMOS static RAM with 12 ns access time, single 3.3 V supply operation, LVTTL-compatible I/O, and JEDEC-standard center-power/ground pinout for noise reduction. It serves as a fast, fully static asynchronous memory buffer in embedded controllers, network packet buffers, and industrial PLC data stacks.
For engineers reviewing the IDT71V416VS12PHG datasheet, IDT71V416VS12PHG pinout, IDT71V416VS12PHG application, or IDT71V416VS12PHG equivalent, key selection criteria include its 12 ns read cycle time, byte-enable support for 8-bit subsystems, low-impedance output drivers enabling direct bus interfacing, and SOJ-44 package compatibility with legacy memory sockets.
Technical Context
The IDT71V416VS12PHG implements fully static asynchronous architecture-no clocks or refresh required-and uses dual byte enables (BHE/ BLE) to support independent high- and low-byte writes. Its address access time (tAA = 12 ns) and chip select access time (tACS = 12 ns) are matched to ensure deterministic timing under variable bus arbitration.
All inputs and outputs are LVTTL-compatible with VIH(min) = 2.0 V and VIL(max) = 0.8 V at VDD = 3.3 V, and it features dynamic standby current of 60 mA (max) and full static standby current of 20 mA (max), enabling low-power hold modes in battery-backed systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4,194,304 bits (256K × 16), supporting 16-bit wide data paths without external multiplexing |
| Access Time (tAA) | 12 ns maximum - guarantees sub-83 MHz bus interface timing with margin |
| Supply Voltage | 3.0–3.6 V - compatible with standard 3.3 V logic rails and tolerant of ±10% regulation variation |
| I/O Interface | LVTTL-compatible - directly interfaces with 3.3 V microcontrollers, FPGAs, and ASICs without level shifters |
| Byte Enable Control | Separate BHE and BLE pins - enables independent 8-bit write operations to upper/lower bytes, reducing bus contention |
| Package | 44-pin, 400-mil plastic SOJ (SO44-1) - industry-standard footprint for socketed memory modules and repairable designs |
| Operating Temperature | –40°C to +85°C (Industrial grade) - qualified for deployment in factory automation and outdoor telecom equipment |
Pinout & Package
Package: 44-pin, 400-mil plastic SOJ (SO44-1), JEDEC-standard center-power/ground layout (VDD/VSS on pins 12 & 33, respectively) minimizing simultaneous switching noise.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit address bus accepting 256K word locations; fully static - no setup/hold timing constraints beyond tAS = 0 ns |
| CS | Chip Select | Active-low enable controlling device selection; tACS = 12 ns ensures reliable response to decoded memory map windows |
| OE | Output Enable | Active-low control for output drivers; tOE = 6 ns enables fast read turnaround in burst-access protocols |
| WE | Write Enable | Active-low write strobe; tWP = 8 ns minimum pulse width supports tight CPU write cycles |
| BHE / BLE | Byte Enable Inputs | Independent high/low byte gating - allows partial-word writes without disturbing adjacent bytes |
| I/O0–I/O15 | Bidirectional Data Bus | 16-bit LVTTL I/O with tOLZ = 0 ns and tOHZ = 6 ns - supports zero-wait-state reads when synchronized to system clock edge |
| VDD | Power Supply | 3.3 V primary supply; decoupling required per JEDEC SOJ layout guidelines (pins 12 & 33) |
| VSS | Ground | Signal and power ground reference; center-placed to reduce ground bounce across wide data bus |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC Center Power/Ground Pinout | Reduces simultaneous switching noise by symmetrically distributing VDD/VSS across package center, critical for stable 12 ns operation |
| Equal Access & Cycle Times | tRC = tAA = 12 ns eliminates timing asymmetry between read and write cycles, simplifying bus controller design |
| Low-Power Standby Mode | ISB = 60 mA max (dynamic) and ISB1 = 20 mA max (static) enables energy-efficient idle states in portable instrumentation |
| Full Static Operation | No clocks, no refresh - eliminates external timing generator overhead and supports indefinite data retention during power-gating |
| Single 3.3 V Supply | Eliminates need for dual-voltage regulators or level translators, reducing BOM count and PCB area in space-constrained designs |
Applications
| Industrial PLC Data Buffer | Network Packet Memory |
|---|---|
Use Scenario: Storing real-time I/O scan data and ladder logic state variables in programmable logic controllers operating in harsh factory environments. IC Role / Device Role / Timing Role: Asynchronous 16-bit SRAM providing non-refreshed, deterministic 12 ns read/write access for deterministic scan-cycle execution. Use Value: Industrial temperature rating (–40°C to +85°C) and SOJ package robustness ensure long-term reliability in uncontrolled cabinet environments. |
Use Scenario: Temporary storage of Ethernet frames in Layer 2 switches before forwarding or filtering decisions are made. IC Role / Device Role / Timing Role: High-speed packet buffer enabling line-rate buffering with zero wait states on 3.3 V processor buses. Use Value: Byte-enable capability allows partial writes of frame headers and payloads without corrupting adjacent packet data. |
| Medical Imaging Frame Store | Test Equipment Pattern Memory |
Use Scenario: Capturing and holding digitized ultrasound or X-ray image lines prior to DSP processing in portable diagnostic devices. IC Role / Device Role / Timing Role: Low-noise, fully static memory preserving pixel integrity during intermittent acquisition bursts. Use Value: Center VDD/VSS pinout minimizes signal integrity degradation in mixed-signal PCB layouts with sensitive analog front-ends. |
Use Scenario: Storing stimulus/response patterns in automated test equipment (ATE) for semiconductor wafer probing. IC Role / Device Role / Timing Role: Deterministic 12 ns access enables precise pattern generation synchronized to tester clock domains. Use Value: LVTTL compatibility and 0 ns address setup time simplify integration with FPGA-based pattern generators and timing controllers. |
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 |
|---|---|---|---|
| Cypress CY7C1041DV33-12ZXC | Same density (256K × 16), 12 ns speed, but TSOP-II package only - no SOJ option | Requires PCB redesign for TSOP footprint; lacks SOJ socket compatibility for field-replaceable modules | Select when board space is constrained and TSOP mounting is preferred over socketed SOJ |
| ISSI IS61LV25616AL-12TLI | 12 ns speed, industrial temp, but uses different pinout (non-JEDEC center VDD/VSS) and higher ICC (220 mA vs. 180 mA) | Higher dynamic current increases thermal load; non-standard pinout complicates drop-in replacement in legacy SOJ sockets | Select only after verifying layout compatibility and thermal margin in high-density assemblies |
Compared with CY7C1041DV33-12ZXC and IS61LV25616AL-12TLI, the IDT71V416VS12PHG offers unique SOJ-44 socket compatibility, JEDEC-compliant noise-reducing pinout, and lower dynamic current - making it optimal for repairable, thermally constrained, or legacy-memory-socketed industrial systems.
Availability
IDT71V416VS12PHG is available at Aetrix Electronics and suitable for industrial PLC data buffers, network packet memory, medical imaging frame stores, and test equipment pattern memory requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for IDT71V416VS12PHG 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 IDT71V416VS12PHG belongs to IDT's legacy high-speed CMOS SRAM product line, designed specifically for deterministic, low-latency, fully static memory applications in industrial and telecom infrastructure where refresh-free operation and noise immunity are critical.
FAQ
What is the operating temperature range for the IDT71V416VS12PHG?
The IDT71V416VS12PHG 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 access time, standby current, and input/output voltage thresholds. The "I" suffix in the ordering code confirms this industrial-grade qualification, making the IDT71V416VS12PHG suitable for deployment in factory automation, outdoor base stations, and transportation control systems where ambient conditions exceed commercial limits.
Does the IDT71V416VS12PHG require a refresh circuit or clock signal?
No, the IDT71V416VS12PHG uses fully static CMOS memory cells and requires no refresh circuitry or clock signal. Its asynchronous design relies solely on address, control (CS/OE/WE/BHE/ BLE), and data signals - eliminating timing generator complexity and power overhead associated with DRAM or pseudo-static RAM. This makes the IDT71V416VS12PHG ideal for ultra-low-jitter applications such as real-time control buffers and test pattern memory where deterministic latency is mandatory.
What package type does the IDT71V416VS12PHG use, and is it socket-compatible?
The IDT71V416VS12PHG uses a 44-pin, 400-mil plastic SOJ (SO44-1) package with JEDEC-standard pinout, including center-placed VDD (pin 12) and VSS (pin 33). It is mechanically and electrically socket-compatible with industry-standard SOJ-44 memory sockets used in legacy industrial controllers, telecom line cards, and test equipment. The "PH" in the part number explicitly denotes the SOJ-44 package variant.
How does byte enable (BHE/ BLE) function in the IDT71V416VS12PHG?
In the IDT71V416VS12PHG, BHE (high byte enable) and BLE (low byte enable) independently gate the upper (I/O8–I/O15) and lower (I/O0–I/O7) data bytes during write operations. When only BHE is active (LOW), only the high byte is written; when only BLE is active, only the low byte is written. This enables efficient 8-bit subsystem interfacing without masking logic or bus-width conversion, and prevents unintended overwrites in mixed-data-width architectures - a key capability confirmed in the device's truth table and timing waveforms.
What is the maximum dynamic supply current for the IDT71V416VS12PHG at 12 ns speed?
At 12 ns speed grade and industrial temperature, the IDT71V416VS12PHG has a maximum dynamic operating current (ICC) of 180 mA when CS is active, outputs are open, and all address lines toggle at maximum frequency (fMAX ≈ 83 MHz). This value is specified in the "71V416S/L12" row of Table 08 and reflects worst-case power consumption during sustained random-access operation - critical for thermal design and regulator sizing in dense embedded systems.
IDT71V416VS12PHG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 44-TSOP (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:
- 12ns
- Access Time:
- 12 ns
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 44-TSOP II
IDT71V416VS12PHG FAQ
1.How can I place an order for IDT71V416VS12PHG through Aetrix?
Please submit a Request for Quotation (RFQ) for IDT71V416VS12PHG 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 IDT71V416VS12PHG reliable?
The price and inventory of IDT71V416VS12PHG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IDT71V416VS12PHG is usually 5 days.
3.What payment methods are accepted for IDT71V416VS12PHG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IDT71V416VS12PHG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IDT71V416VS12PHG?
IDT71V416VS12PHG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IDT71V416VS12PHG 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 IDT71V416VS12PHG?
For technical support, including IDT71V416VS12PHG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IDT71V416VS12PHG requirements.
6.How does Aetrix verify that IDT71V416VS12PHG is sourced from the original manufacturer or authorized distributors?
All IDT71V416VS12PHG 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 IDT71V416VS12PHG meets industry standards.
7.What is the process for return or replacement of IDT71V416VS12PHG?
All IDT71V416VS12PHG units undergo pre-shipment inspection (PSI). If there is an issue with IDT71V416VS12PHG, 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 IDT71V416VS12PHG part is unused and in its original packaging.
Return procedure for IDT71V416VS12PHG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
IDT71V416VS12PHG Tags
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