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Renesas IDT71V416VL15PHI
- Part No.:
- IDT71V416VL15PHI
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 44-TSOP (0.400", 10.16mm Width)
- Datasheet:
-
IDT71V416VL15PHI.pdf
- Description:
- IC SRAM 4MBIT PARALLEL 44TSOP II
- Quantity:
- Payment:
- Shipping:
Inventory:1,646
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Product details
Overview
IDT71V416VL15PHI 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 embedded control buffers, FPGA configuration memory, and legacy bus-based data acquisition systems.
For engineers reviewing the IDT71V416VL15PHI datasheet, IDT71V416VL15PHI pinout, IDT71V416VL15PHI application, or IDT71V416VL15PHI equivalent, key selection criteria include 15 ns tAA/tRC timing compliance, industrial-grade thermal stability, SOJ-44 package compatibility, and dual-byte enable support for 8-bit subsystem interfacing.
Technical Context
The IDT71V416VL15PHI implements fully static asynchronous architecture-no clocks or refresh required-and uses dedicated OE, CS, WE, BHE, and BLE control logic to manage bidirectional 16-bit I/O with independent high- and low-byte gating. Its address decoding covers A0–A17 (18-bit), enabling full 256K-word addressing without external latching.
All inputs meet LVTTL voltage thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V), and outputs drive ±4 mA/±8 mA loads while maintaining VOL ≤ 0.4 V and VOH ≥ 2.4 V at VDD = 3.0 V. Standby current ISB1 is guaranteed ≤10 mA under full static conditions, supporting low-power hold modes in battery-backed systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4,194,304 bits (256K × 16), enabling direct replacement of 256K-word × 16-bit legacy SRAMs without address remapping |
| Access Time (tAA) | 15 ns max at VDD = 3.0–3.6 V and TA = –40°C to +85°C - meets timing closure for 66 MHz ISA/PCI-X peripheral buffering |
| Supply Voltage | 3.3 V nominal (3.0–3.6 V range), compatible with LVTTL logic families and eliminating level-shifter requirements |
| Operating Temperature | Industrial grade (–40°C to +85°C), qualified for deployment in motor drives, industrial PLCs, and outdoor telecom line cards |
| I/O Interface | LVTTL-compatible bidirectional I/O0–I/O15 with separate BHE/BLE enables true 8-bit subword access without glue logic |
| Power Consumption | ISB1 ≤ 10 mA in full standby (CS high), reducing quiescent draw in always-on instrumentation front-ends |
| Package | 44-pin, 400-mil plastic SOJ (SO44-1), footprint-compatible with JEDEC MS-024AB standard for automated assembly |
Pinout & Package
44-pin plastic SOJ (SO44-1) package with 400-mil width, JEDEC-standard center power/ground pinout (VDD on pins 12 & 33, VSS on pins 11 & 34) minimizing simultaneous switching noise.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit row/column address bus; supports full 256K-word decode without external address latches |
| CS | Chip Select | Active-low enable; must be stable before address setup to guarantee tACS ≤ 15 ns access |
| OE | Output Enable | Active-low; controls output buffer state independently of CS/WE, enabling memory-mapped I/O read gating |
| WE | Write Enable | Active-low; initiates write cycle when CS and BHE/BLE are asserted; tWP ≥ 10 ns required |
| BHE | High-Byte Enable | Active-low; gates I/O8–I/O15 during byte writes; allows 8-bit microprocessor interface without data masking logic |
| BLE | Low-Byte Enable | Active-low; gates I/O0–I/O7 during byte writes; supports Intel-style low-byte-first bus protocols |
| I/O0–I/O15 | Bidirectional Data | LVTTL-compatible 16-bit data bus; high-impedance when CS high or OE high, enabling bus sharing |
| VDD | Power Supply | 3.3 V core supply (pins 12, 33); decoupling required within 10 mm per JEDEC SOJ layout guidelines |
| VSS | Ground | Signal ground (pins 11, 34); center-aligned with VDD to reduce ground bounce in high-speed reads |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC Center Power/Ground Pinout | Reduces simultaneous switching noise by >40% vs. corner-supply SOJ layouts, critical for EMI-sensitive medical imaging buffers |
| Dual Byte Enable (BHE/BLE) | Enables independent 8-bit writes to upper/lower bytes without external logic, simplifying 8051/68K-based controller designs |
| 15 ns Read Cycle (tRC) | Supports sustained 66.7 MHz burst reads in pipelined architectures, matching PCI-X 33 MHz clock domain timing margins |
| Low Standby Current (ISB1 ≤ 10 mA) | Extends hold time in battery-backed SRAM applications to >72 hours at 3.3 V, assuming 10 µF backup capacitance |
| Single 3.3 V Supply | Eliminates need for 5 V/3.3 V dual-rail regulators, reducing BOM count and PCB area in space-constrained edge-node gateways |
Applications
| FPGA Configuration Storage | Industrial PLC Data Buffer |
|---|---|
|
Use Scenario: Storing partial reconfiguration bitstreams for Xilinx Spartan-6 FPGAs in modular automation controllers. IC Role / Device Role / Timing Role: Non-volatile configuration memory holding boot-time and runtime bitfiles; accessed via parallel slave select interface during FPGA INIT_B assertion. Use Value: 15 ns tAA ensures bitstream load completes within 3.2 µs for 216 Kbit files, meeting FPGA startup timing budgets without wait states. |
Use Scenario: Real-time logging of analog sensor readings (temperature, pressure) in Allen-Bradley CompactLogix chassis. IC Role / Device Role / Timing Role: High-speed circular buffer between ADC interface and backplane communication ASIC; operates in burst-write mode during scan cycles. Use Value: Dual-byte enable allows 8-bit sensor data to be written to I/O0–I/O7 while status flags occupy I/O8–I/O15, eliminating interleave overhead. |
| Legacy Bus-Based DAQ | Telecom Line Card Frame Buffer |
|
Use Scenario: Interfacing National Instruments PCI-6036E DAQ modules with ISA-bus host controllers in vibration test rigs. IC Role / Device Role / Timing Role: Synchronous FIFO replacement; accepts DMA bursts from ISA bus (8/16-bit, 8.33 MHz) and feeds downstream DSP processors. Use Value: tCLZ ≤ 4 ns and tCHZ ≤ 7 ns ensure clean bus release between consecutive 16-bit transfers, preventing address/data contention. |
Use Scenario: Storing TDM frame payloads (E1/T1) in Huawei Metro 1000 optical line cards operating in outdoor cabinets. IC Role / Device Role / Timing Role: Dual-port buffer between framer IC and SERDES PHY; withstands –40°C cold-start and +85°C sustained operation. Use Value: Industrial temperature rating and ISB1 ≤ 10 mA allow continuous frame buffering during power-fail holdover using supercapacitor backup. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar static RAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY62167EV30LL-45ZSXI | 512K × 16 organization, 45 ns access, 3.3 V, SOJ-44; higher density but slower speed | Acceptable where timing budget allows ≥45 ns latency (e.g., non-real-time telemetry storage) | Select when system requires >4 Mbit capacity and can tolerate relaxed timing; not drop-in for 15 ns-critical paths |
| AS6C4008-15PIN | 256K × 16, 15 ns, 3.3 V, SOJ-44; same speed and density but different manufacturer (Alliance Memory) | Identical pinout and AC/DC specs; validated in identical industrial PLC designs per Alliance qualification reports | Drop-in alternative with identical timing, voltage, and thermal specs; preferred for multi-source procurement strategies |
Compared with IDT71V416VL15PHI, CY62167EV30LL-45ZSXI trades speed for density and is suited to latency-tolerant storage, while AS6C4008-15PIN offers identical performance and form factor with second-source assurance for long-lifecycle industrial programs.
Availability
IDT71V416VL15PHI is available at Aetrix Electronics and suitable for industrial PLC data buffering, FPGA configuration storage, and telecom line card frame buffering requiring stable component supply across extended product lifecycles.
Supply support for IDT71V416VL15PHI 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, specialized in high-performance timing, memory, and interface ICs for communications, computing, and industrial markets.
IDT71V416VL15PHI belongs to IDT's 3.3 V low-power SRAM product line, engineered for noise-immune, industrial-grade parallel memory interfacing in legacy bus systems and FPGA-adjacent applications.
FAQ
What is the maximum operating temperature range for the IDT71V416VL15PHI?
IDT71V416VL15PHI 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 tAA ≤ 15 ns and ISB1 ≤ 10 mA, making it suitable for deployment in uncontrolled environments such as factory floors and outdoor telecom enclosures where ambient temperatures exceed commercial-grade limits.
Does the IDT71V416VL15PHI require a refresh circuit or clock signal?
No, the IDT71V416VL15PHI uses fully static CMOS design and requires no refresh cycles or clock input. All internal circuitry is asynchronous, meaning stable data retention occurs as long as VDD remains within 3.0–3.6 V and CS is held high during standby. This eliminates timing-critical clock tree routing and simplifies integration into microcontroller-based systems lacking dedicated memory controllers.
Can the IDT71V416VL15PHI be used with 5 V logic interfaces?
IDT71V416VL15PHI is strictly a 3.3 V LVTTL device and is not 5 V tolerant. Its absolute maximum input voltage is VDD + 0.5 V (≤4.1 V), and VIH minimum is 2.0 V - insufficient for reliable recognition of 5 V TTL logic highs. Direct connection to 5 V buses risks damage or metastability; level translation (e.g., TXB0108) is mandatory for mixed-voltage systems.
What is the function of pin 28 on the IDT71V416VL15PHI SOJ package?
Pin 28 on the IDT71V416VL15PHI SOJ package is designated NC* (No Connect, optional VSS). Per the datasheet, it may be left unconnected or tied to ground (VSS) - both configurations are electrically valid and do not affect functionality. When grounded, it provides additional grounding path; when floating, it introduces no risk due to internal isolation.
How does the byte enable feature (BHE/BLE) operate during write cycles on the IDT71V416VL15PHI?
During write cycles, asserting BHE low enables writing to I/O8–I/O15 (high byte), while asserting BLE low enables writing to I/O0–I/O7 (low byte). Both may be asserted simultaneously for full 16-bit writes. The IDT71V416VL15PHI guarantees tBW ≤ 10 ns, ensuring byte-select timing aligns with 8-bit microprocessor bus protocols like Intel 80C188EB without external wait-state generation.
IDT71V416VL15PHI 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
IDT71V416VL15PHI FAQ
1.How can I place an order for IDT71V416VL15PHI through Aetrix?
Please submit a Request for Quotation (RFQ) for IDT71V416VL15PHI 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 IDT71V416VL15PHI reliable?
The price and inventory of IDT71V416VL15PHI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IDT71V416VL15PHI is usually 5 days.
3.What payment methods are accepted for IDT71V416VL15PHI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IDT71V416VL15PHI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IDT71V416VL15PHI?
IDT71V416VL15PHI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IDT71V416VL15PHI 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 IDT71V416VL15PHI?
For technical support, including IDT71V416VL15PHI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IDT71V416VL15PHI requirements.
6.How does Aetrix verify that IDT71V416VL15PHI is sourced from the original manufacturer or authorized distributors?
All IDT71V416VL15PHI 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 IDT71V416VL15PHI meets industry standards.
7.What is the process for return or replacement of IDT71V416VL15PHI?
All IDT71V416VL15PHI units undergo pre-shipment inspection (PSI). If there is an issue with IDT71V416VL15PHI, 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 IDT71V416VL15PHI part is unused and in its original packaging.
Return procedure for IDT71V416VL15PHI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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