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Renesas IDT71V416VS15PHI
- Part No.:
- IDT71V416VS15PHI
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 44-TSOP (0.400", 10.16mm Width)
- Datasheet:
-
IDT71V416VS15PHI.pdf
- Description:
- IC SRAM 4MBIT PARALLEL 44TSOP II
- Quantity:
- Payment:
- Shipping:
Inventory:4,422
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Product details
Overview
IDT71V416VS15PHI from Integrated Device Technology is a 256K × 16-bit (4 Mbit), 3.3V CMOS asynchronous static RAM with 15 ns access time, JEDEC-compliant center power/ground pinout, and LVTTL-compatible bidirectional I/O. It operates across industrial temperature range (–40°C to +85°C) and supports byte-wide or full-word read/write via independent BHE/BLE controls in embedded control, networking buffers, and FPGA configuration memory applications.
For engineers reviewing the IDT71V416VS15PHI datasheet, IDT71V416VS15PHI pinout, IDT71V416VS15PHI application, or IDT71V416VS15PHI equivalent, key selection criteria include its 15 ns tAA/tRC timing, dual-byte enable architecture, SOJ-44 package compatibility, and low-power standby current of 50 mA (max) under dynamic conditions.
Technical Context
The IDT71V416VS15PHI implements fully static asynchronous circuitry-no clocks or refresh required-and uses high-reliability CMOS fabrication for stable operation at 3.3 V. Its address decoding supports A0–A17 (18-bit addressing), enabling direct 256K-word mapping without external logic.
Control logic integrates independent Chip Select (CS), Output Enable (OE), Write Enable (WE), High-Byte Enable (BHE), and Low-Byte Enable (BLE) inputs, allowing granular access to upper/lower 8-bit data lanes. All timing parameters-including tCLZ = 4 ns and tOHZ = 7 ns-are specified over full industrial temperature and voltage ranges (VDD = 3.0–3.6 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4,194,304 bits (256K × 16), enabling single-chip storage for 64K-word × 32-bit systems via two devices |
| Access Time (tAA) | 15 ns max - defines minimum delay between valid address and stable output data |
| Cycle Time (tRC) | 15 ns max - sets shortest interval between successive read/write operations |
| Supply Voltage | 3.0–3.6 V - compatible with standard 3.3V logic rails and tolerant of ±10% regulation variation |
| Standby Current (ISB) | 50 mA max - ensures low power consumption during CS-inactive states in battery-backed or idle systems |
| I/O Interface | LVTTL-compatible - allows direct connection to FPGA I/O banks, microcontroller data buses, and ASIC interfaces without level shifters |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade reliability in base stations, motor drives, and PLCs |
Pinout & Package
Package: 44-pin, 400-mil Plastic SOJ (SO44-1), JEDEC-standard footprint with center VDD/VSS arrangement for noise reduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit address bus supporting full 256K-word decode; no external address latching required |
| CS | Chip Select | Active-low global enable; places device in standby (high-Z I/O) when deasserted |
| OE | Output Enable | Active-low control for output drivers; enables read data only when CS and OE both low |
| WE | Write Enable | Active-low signal initiating write cycle; must be synchronized with BHE/BLE for byte writes |
| BHE, BLE | Byte Enable | Independent active-low controls for upper (I/O8–I/O15) and lower (I/O0–I/O7) data bytes |
| I/O0–I/O15 | Bidirectional Data | 16-bit LVTTL I/O bus; direction determined by WE state and internal control logic |
| VDD, VSS | Power/Ground | Center-placed pins (Pins 12 & 25) reduce simultaneous switching noise per JEDEC standard |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC Center Power/GND Pinout | Reduces ground bounce and supply noise by symmetrically distributing VDD/VSS across package center |
| Dual Byte Enable Architecture | Enables independent 8-bit writes to high/low bytes without masking logic or additional control signals |
| 5 ns Output Enable Propagation | Minimizes read latency in burst-access systems such as packet buffering or real-time DSP co-processors |
| Static Asynchronous Operation | Eliminates need for clock distribution, refresh controllers, or timing-critical reset sequencing |
| Industrial Temperature Qualification | Validated operation from –40°C to +85°C supports deployment in uncontrolled environments like factory floors |
Applications
| Industrial PLC Memory Buffer | FPGA Configuration Storage |
|---|---|
Use Scenario: Storing real-time I/O status, ladder logic variables, and motion control parameters in programmable logic controllers. IC Role / Device Role / Timing Role: Asynchronous SRAM providing zero-wait-state read/write access for deterministic scan-cycle execution. Use Value: 15 ns tAA ensures sub-microsecond variable access, enabling <100 µs PLC scan times even with 10K+ tag points. | Use Scenario: Holding configuration bitstreams for Xilinx Spartan or Intel Cyclone FPGAs during power-up or partial reconfiguration. IC Role / Device Role / Timing Role: Non-volatile boot memory interface delivering parallel 16-bit configuration words to FPGA configuration port. Use Value: LVTTL compatibility and 44-pin SOJ footprint match FPGA reference designs, eliminating level-shifting and layout redesign. |
| Telecom Line Card Buffer | Medical Imaging Frame Store |
Use Scenario: Temporary packet buffering in Ethernet switch line cards handling 1 Gbps traffic with deep queuing requirements. IC Role / Device Role / Timing Role: Dual-port-capable SRAM used as first-in-first-out (FIFO) buffer with separate read/write address control. Use Value: Independent BHE/BLE enables concurrent header (low byte) and payload (high byte) writes, improving throughput by 20% vs. 8-bit-only buffers. | Use Scenario: Capturing and holding uncompressed grayscale image frames (e.g., 1024×768 @ 16 bpp) in ultrasound or digital radiography systems. IC Role / Device Role / Timing Role: High-bandwidth frame buffer interfacing directly to ADC/DAC pipelines and display controllers. Use Value: 15 ns cycle time supports >66 MHz sustained data transfer, sufficient for real-time 30 fps video at 16-bit depth. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar static RAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY62167EV30LL-15ZSXI | Same density (256K × 16), 15 ns speed, but uses TSOP-II package and has higher ISB (60 mA max) | TSOP-II footprint requires PCB redesign; higher standby current limits use in always-on medical devices | Select when TSOP-II is preferred for board space constraints and thermal profile permits higher ISB |
| AS6C4008-15PIN | 256K × 16, 15 ns, but rated only for commercial temp (0°C to +70°C); no industrial qualification | Not suitable for outdoor telecom enclosures or factory automation where ambient exceeds 70°C | Select only for cost-sensitive consumer or lab equipment operating within commercial temperature envelope |
Compared with CY62167EV30LL-15ZSXI and AS6C4008-15PIN, the IDT71V416VS15PHI uniquely combines industrial temperature rating, SOJ-44 compatibility, and 50 mA max ISB-making it optimal for ruggedized embedded systems requiring long-term reliability without thermal derating.
Availability
IDT71V416VS15PHI is available at Aetrix Electronics and suitable for industrial PLCs, FPGA configuration, telecom line cards, and medical imaging systems requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for IDT71V416VS15PHI 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 IDT71V416VS15PHI belongs to IDT's legacy high-speed CMOS SRAM product line, designed specifically for deterministic, low-latency memory access in real-time embedded systems where refresh-free operation and industrial reliability are mandatory.
FAQ
What is the maximum operating frequency supported by the IDT71V416VS15PHI?
The IDT71V416VS15PHI does not operate on a clock; it is an asynchronous SRAM. Its maximum effective bandwidth is determined by its 15 ns cycle time (tRC), supporting up to 66.7 MHz random access throughput. This means the device can complete one read or write operation every 15 ns without requiring external clocking or synchronization circuits.
Does the IDT71V416VS15PHI require external refresh circuitry?
No, the IDT71V416VS15PHI is a fully static RAM and requires no refresh circuitry. Its internal latches retain data indefinitely as long as power (VDD) and ground (VSS) are maintained within specification. This eliminates refresh overhead, simplifies system design, and guarantees deterministic access timing-critical for hard real-time applications using the IDT71V416VS15PHI.
Can the IDT71V416VS15PHI be used with 5V logic interfaces?
No, the IDT71V416VS15PHI is strictly a 3.3V LVTTL device. Its absolute maximum input voltage is VDD + 0.5 V (≤4.1 V), and VIH minimum is 2.0 V. Direct connection to 5V logic risks damage and violates DC operating conditions. Level translation is required if interfacing with 5V microcontrollers or peripherals, unlike mixed-voltage tolerant alternatives not applicable to the IDT71V416VS15PHI.
What is the function of Pin 28 on the IDT71V416VS15PHI SOJ package?
Pin 28 on the IDT71V416VS15PHI SOJ package is designated NC* (No Connect), meaning it is not internally bonded and may be left floating or tied to VSS per board layout best practices. The datasheet explicitly states "Pin 28 can either be a NC or connected to Vss", confirming no functional role-this applies only to the SOJ/TSOP variants, not the BGA version, and is verified for the IDT71V416VS15PHI.
How does the byte enable architecture of the IDT71V416VS15PHI improve system efficiency?
The IDT71V416VS15PHI's independent BHE and BLE inputs allow selective 8-bit writes to upper (I/O8–I/O15) or lower (I/O0–I/O7) bytes without reading-modify-write sequences. This reduces bus contention, lowers power consumption during partial updates, and accelerates firmware patching or protocol header manipulation-directly enhancing throughput in systems relying on the IDT71V416VS15PHI for real-time data buffering.
IDT71V416VS15PHI 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:
- 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
IDT71V416VS15PHI FAQ
1.How can I place an order for IDT71V416VS15PHI through Aetrix?
Please submit a Request for Quotation (RFQ) for IDT71V416VS15PHI 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 IDT71V416VS15PHI reliable?
The price and inventory of IDT71V416VS15PHI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IDT71V416VS15PHI is usually 5 days.
3.What payment methods are accepted for IDT71V416VS15PHI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IDT71V416VS15PHI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IDT71V416VS15PHI?
IDT71V416VS15PHI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IDT71V416VS15PHI 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 IDT71V416VS15PHI?
For technical support, including IDT71V416VS15PHI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IDT71V416VS15PHI requirements.
6.How does Aetrix verify that IDT71V416VS15PHI is sourced from the original manufacturer or authorized distributors?
All IDT71V416VS15PHI 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 IDT71V416VS15PHI meets industry standards.
7.What is the process for return or replacement of IDT71V416VS15PHI?
All IDT71V416VS15PHI units undergo pre-shipment inspection (PSI). If there is an issue with IDT71V416VS15PHI, 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 IDT71V416VS15PHI part is unused and in its original packaging.
Return procedure for IDT71V416VS15PHI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
IDT71V416VS15PHI 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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AT24C02C-SSHM-T
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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
Microchip Technology
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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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