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Renesas IDT71V416VS15PHI8
- Part No.:
- IDT71V416VS15PHI8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 44-TSOP (0.400", 10.16mm Width)
- Datasheet:
-
IDT71V416VS15PHI8.pdf
- Description:
- IC SRAM 4MBIT PARALLEL 44TSOP II
- Quantity:
- Payment:
- Shipping:
Inventory:3,370
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Product details
Overview
IDT71V416VS15PHI8 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, and JEDEC-standard center power/ground pinout for noise reduction. It supports byte-wide and word-wide read/write via independent BHE/BLE controls and operates across industrial temperature range (–40°C to +85°C) in a 44-pin SOJ package.
For engineers reviewing the IDT71V416VS15PHI8 datasheet, IDT71V416VS15PHI8 pinout, IDT71V416VS15PHI8 application, or IDT71V416VS15PHI8 equivalent, key selection criteria include its 15 ns tAA/tRC timing, LVTTL-compatible bidirectional I/Os, low-power standby current (ISB ≤ 50 mA), and support for asynchronous byte-select memory interfacing in embedded controllers and networking datapaths.
Technical Context
The IDT71V416VS15PHI8 implements fully static asynchronous circuitry-no clocks or refresh required-and uses dual-byte enable (BHE/BLE) logic to gate high- and low-byte data paths independently during reads/writes. Its address decoding supports full 18-bit addressing (A0–A17) for 256K-word access, with chip select (CS), output enable (OE), and write enable (WE) providing standard SRAM control hierarchy.
All inputs and outputs are LVTTL-compatible with VIH ≥ 2.0 V and VIL ≤ 0.8 V at VDD = 3.3 V, and the device guarantees tCLZ ≤ 4 ns and tOHZ ≤ 7 ns under industrial conditions. The SOJ package features JEDEC-compliant pinout with VDD/VSS on pins 12 & 33 and NC on pin 28, enabling drop-in compatibility with legacy 44-pin memory sockets.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4,194,304 bits (256K × 16), supporting 16-bit parallel bus interfaces without external data multiplexing. |
| Access Time (tAA) | 15 ns max at –40°C to +85°C, enabling direct interface with 66 MHz microcontrollers or FPGAs without wait states. |
| Supply Voltage | 3.0 V to 3.6 V - compatible with modern 3.3 V logic domains and eliminates need for level shifters. |
| Standby Current (ISB) | 50 mA max (industrial), enabling low-power hold mode in battery-backed systems or sleep-state memory retention. |
| I/O Interface | LVTTL-compatible bidirectional I/O0–I/O15 with 8 mA sink / –4 mA source drive strength per pin. |
| Byte Enable Logic | Independent BHE (pins 37) and BLE (pin 36) allow selective 8-bit writes to upper or lower byte without disturbing adjacent data. |
| Package | 44-pin, 400-mil plastic SOJ (SO44-1), footprint-compatible with industry-standard memory sockets and reflow soldering profiles. |
Pinout & Package
44-pin plastic SOJ (SO44-1) package with 400-mil width, JEDEC-standard center power/ground layout (VDD on pins 12 & 33, VSS on pins 11 & 32), and NC on pin 28. Pin 28 may be left unconnected or tied to VSS per design preference.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit address bus supporting full 256K-word addressing; no address multiplexing required. |
| I/O0–I/O7 | Low-Byte Data I/O | Bidirectional 8-bit data path for lower byte; controlled by BLE (pin 36). |
| I/O8–I/O15 | High-Byte Data I/O | Bidirectional 8-bit data path for upper byte; controlled by BHE (pin 37). |
| CS | Chip Select | Active-low global enable; deassertion places all outputs in high-Z and reduces ICC to ISB. |
| OE | Output Enable | Active-low control for output drivers; enables read data only when CS and OE are both low. |
| WE | Write Enable | Active-low signal initiating write cycle; latches data on rising edge of WE when CS and BHE/BLE are asserted. |
| BLE | Low-Byte Enable | Active-low control enabling write/read of I/O0–I/O7; independent of BHE for byte-select operations. |
| BHE | High-Byte Enable | Active-low control enabling write/read of I/O8–I/O15; allows partial-word updates without full-word overhead. |
| VDD | Power Supply | 3.3 V core supply (pins 12 & 33); dual placement reduces IR drop and improves noise immunity. |
| VSS | Ground | Signal ground (pins 11 & 32); center-aligned with VDD per JEDEC spec to minimize switching noise. |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC Center Power/Ground Pinout | Reduces simultaneous switching noise (SSN) by symmetrically distributing VDD/VSS around the perimeter, critical for stable operation in dense PCB layouts. |
| Independent Byte Enables (BHE/BLE) | Enables true 8-bit sub-word writes in 16-bit systems-eliminates need for external byte masking logic or read-modify-write cycles. |
| 15 ns Read/Write Cycle Times | Guaranteed tRC = 15 ns over full industrial temperature range, enabling deterministic timing in real-time control and packet buffering applications. |
| LVTTL-Compatible I/O | Direct interface with 3.3 V microprocessors, FPGAs, and ASICs without level-shifting components or additional voltage rails. |
| Low-Power Standby Mode | ISB ≤ 50 mA at VDD = 3.6 V and T = +85°C ensures minimal leakage current during system sleep or idle states. |
Applications
| Industrial PLC Memory Buffer | Network Packet Buffer |
|---|---|
|
Use Scenario: Storing real-time I/O status and control registers in programmable logic controllers with deterministic scan cycles. IC Role / Device Role / Timing Role: Asynchronous 16-bit SRAM providing zero-wait-state access to firmware variables and process data tables. Use Value: 15 ns tAA ensures register updates complete within tight 100 µs PLC scan windows, while byte enables reduce bus contention during partial updates. |
Use Scenario: Temporary storage of Ethernet frames in Layer 2 switches before forwarding or classification. IC Role / Device Role / Timing Role: High-speed buffer between MAC and switch fabric, handling bursty 1500-byte frame ingress/egress. Use Value: 256K × 16 capacity supports >30 concurrent full-size frames; LVTTL I/O matches PHY interface timing without glue logic. |
| Medical Imaging Frame Store | Avionics Display Controller Cache |
|
Use Scenario: Holding uncompressed grayscale image lines during real-time ultrasound or X-ray sensor digitization. IC Role / Device Role / Timing Role: Dual-port-capable SRAM used as line buffer with separate read/write address paths managed by DMA controller. Use Value: tCLZ ≤ 4 ns enables rapid output release after CS assertion, minimizing dead time between pixel acquisition and display rendering. |
Use Scenario: Caching font glyphs and vector graphics primitives in certified flight display units requiring EMI resilience. IC Role / Device Role / Timing Role: Non-volatile-cached memory holding UI assets accessed by ARM-based display processor during boot and runtime. Use Value: JEDEC center VDD/VSS layout suppresses radiated emissions in safety-critical avionics enclosures per DO-160 Section 21. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY62167EV30LL-15ZSXI | Same density (256K × 16), 15 ns speed, but uses 48-pin TSOP II package and has higher ISB (70 mA max). | Preferred where board space permits larger TSOP footprint and thermal dissipation is less constrained. | Select when migrating from SOJ to surface-mount TSOP and board redesign accommodates different pin pitch and body size. |
| AS6C4008-15ZIN | 256K × 16, 15 ns, but rated only for commercial temp (0°C to +70°C) and lacks BHE/BLE-requires external byte gating. | Suitable for cost-sensitive consumer electronics where industrial temp rating and byte-select are not required. | Choose only if operating environment stays within 0°C–70°C and system logic can implement byte masking externally. |
Compared with CY62167EV30LL-15ZSXI and AS6C4008-15ZIN, the IDT71V416VS15PHI8 uniquely combines industrial temperature support, SOJ socket compatibility, and native byte-enable logic-making it optimal for field-deployed embedded systems requiring long-term reliability and minimal board-level redesign.
Availability
IDT71V416VS15PHI8 is available at Aetrix Electronics and suitable for industrial automation, network infrastructure, medical imaging, and avionics applications requiring stable component supply, long-lifecycle availability, and guaranteed industrial-grade performance.
Supply support for IDT71V416VS15PHI8 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 solutions for communications, computing, and industrial markets.
The IDT71V416VS15PHI8 belongs to IDT's 3.3 V high-speed SRAM product line, engineered specifically for deterministic, low-latency memory interfacing in real-time embedded systems where asynchronous operation and byte-select flexibility are essential.
FAQ
What is the maximum operating temperature range for the IDT71V416VS15PHI8?
The IDT71V416VS15PHI8 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 ISB ≤ 50 mA, making it suitable for deployment in harsh environments such as factory floors and outdoor telecom cabinets.
Does the IDT71V416VS15PHI8 require a clock signal or refresh circuitry?
No, the IDT71V416VS15PHI8 uses fully static asynchronous design and requires no clock input or periodic refresh cycles. Its operation depends solely on address, control (CS/OE/WE/BHE/BLE), and data signals-enabling simple integration into microcontroller, FPGA, or ASIC memory interfaces without timing controller overhead.
Can pin 28 of the IDT71V416VS15PHI8 be left unconnected?
Yes, pin 28 is designated NC (No Connect) in the IDT71V416VS15PHI8 datasheet and may be left floating or tied to VSS per board-level noise mitigation strategy. No functional impact occurs either way, and this flexibility simplifies layout in SOJ socket-based designs where pin 28 routing is obstructed.
How does the byte enable functionality work on the IDT71V416VS15PHI8?
The IDT71V416VS15PHI8 uses active-low BHE (pin 37) and BLE (pin 36) to independently gate the high-byte (I/O8–I/O15) and low-byte (I/O0–I/O7) paths. During a write, asserting only BLE enables data transfer to the lower byte while preserving upper-byte contents-eliminating read-modify-write sequences in 16-bit systems.
Is the IDT71V416VS15PHI8 compatible with 3.0 V logic interfaces?
Yes, the IDT71V416VS15PHI8 operates across VDD = 3.0 V to 3.6 V and maintains LVTTL-compatible thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V) at minimum supply. Its I/Os drive 8 mA low and –4 mA high at VDD = 3.0 V, ensuring robust interoperability with 3.0 V microcontrollers and FPGAs without level translation.
IDT71V416VS15PHI8 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
IDT71V416VS15PHI8 FAQ
1.How can I place an order for IDT71V416VS15PHI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for IDT71V416VS15PHI8 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 IDT71V416VS15PHI8 reliable?
The price and inventory of IDT71V416VS15PHI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IDT71V416VS15PHI8 is usually 5 days.
3.What payment methods are accepted for IDT71V416VS15PHI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IDT71V416VS15PHI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IDT71V416VS15PHI8?
IDT71V416VS15PHI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IDT71V416VS15PHI8 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 IDT71V416VS15PHI8?
For technical support, including IDT71V416VS15PHI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IDT71V416VS15PHI8 requirements.
6.How does Aetrix verify that IDT71V416VS15PHI8 is sourced from the original manufacturer or authorized distributors?
All IDT71V416VS15PHI8 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 IDT71V416VS15PHI8 meets industry standards.
7.What is the process for return or replacement of IDT71V416VS15PHI8?
All IDT71V416VS15PHI8 units undergo pre-shipment inspection (PSI). If there is an issue with IDT71V416VS15PHI8, 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 IDT71V416VS15PHI8 part is unused and in its original packaging.
Return procedure for IDT71V416VS15PHI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
IDT71V416VS15PHI8 Tags
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