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Renesas 71V416YS15PHG
- Part No.:
- 71V416YS15PHG
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 44-TSOP (0.400", 10.16mm Width)
- Datasheet:
-
71V416YS15PHG.pdf
- Description:
- IC SRAM 4MBIT PARALLEL 44TSOP II
- Quantity:
- Payment:
- Shipping:
Inventory:3,305
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Product details
Overview
71V416YS15PHG 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 commercial temperature range (0°C to +70°C) and is used in network packet buffers, FPGA configuration memory, and industrial controller data caching.
For engineers reviewing the 71V416YS15PHG datasheet, 71V416YS15PHG pinout, 71V416YS15PHG application, or 71V416YS15PHG equivalent, key selection criteria include 15 ns tAA/tRC timing, SOJ-44 package compatibility, 3.3 V LVTTL interface level alignment, and byte-enable control for partial-word transfers in embedded memory subsystems.
Technical Context
The 71V416YS15PHG implements fully static asynchronous circuitry-no clocks or refresh required-and uses dual byte enable (BHE/BLE) to independently control high- and low-byte data paths. Its address decoding supports A0–A17 (18-bit addressing), enabling full 256K-word access without external logic.
It features separate chip select (CS), output enable (OE), and write enable (WE) inputs, allowing precise control of memory state transitions. The device guarantees tCLZ ≤ 4 ns and tOHZ ≤ 7 ns under AC test conditions with 30 pF load, supporting reliable high-speed bus interfacing in synchronous and asynchronous systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4,194,304 bits (256K × 16), directly maps to 512 KB of 16-bit wide storage space |
| Access Time (tAA) | 15 ns max - defines minimum address-to-data-valid delay for timing-critical read cycles |
| Cycle Time (tRC) | 15 ns max - sets shortest interval between successive read or write operations |
| Supply Voltage | 3.0 V to 3.6 V - compatible with standard 3.3 V LVTTL logic rails and decoupling schemes |
| I/O Interface | LVTTL-compatible - ensures direct connection to 3.3 V microcontrollers, FPGAs, and ASICs without level shifters |
| Operating Temperature | 0°C to +70°C - qualified for commercial-grade applications including telecom line cards and office equipment |
| Package | 44-pin, 400-mil plastic SOJ (SO44-1) - surface-mountable with JEDEC-standard footprint and thermal profile |
Pinout & Package
71V416YS15PHG is housed in a 44-pin, 400-mil plastic SOJ (Small Outline J-lead) package per JEDEC MO-118AB, with center power/ground pin arrangement (VDD/VSS on pins 12 & 13, 32 & 33) to minimize switching noise.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit address bus accepting full 256K-word range; no address multiplexing required |
| CS | Chip Select | Active-low global enable; places device in standby when high, reducing ICC to ≤50 mA |
| OE | Output Enable | Active-low control for output drivers; enables tristate during reads only when CS is active |
| WE | Write Enable | Active-low signal initiating write cycle; latches data on rising edge when CS and byte enables are asserted |
| BHE / BLE | Byte Enable | Independent high- and low-byte controls; allow 8-bit writes without disturbing adjacent byte |
| I/O0–I/O15 | Bidirectional Data Bus | 16-bit LVTTL I/O lines shared for read data output and write data input; no direction pin needed |
| VDD | Power Supply | +3.3 V core and I/O supply; two dedicated pins (12, 32) reduce IR drop and improve noise immunity |
| VSS | Ground | Signal and power ground reference; two dedicated pins (11, 31) support low-inductance return path |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC Center Power/Ground Pinout | Reduces simultaneous switching noise by symmetrically distributing VDD/VSS across package center |
| Separate Byte Enables (BHE/BLE) | Enables 8-bit partial-word writes without read-modify-write overhead or bus contention |
| Single 3.3 V Supply Operation | Eliminates need for dual-voltage regulators or level translators in 3.3 V system designs |
| Full Static Asynchronous Architecture | Requires no clocks, refresh cycles, or wait states-simplifies timing design and reduces MCU/FPGA resource usage |
| Low-Z Output Enable Timing (tOE ≤ 7 ns) | Supports tight setup windows in high-speed bus protocols like PCI-X legacy interfaces or custom backplanes |
Applications
| Network Packet Buffer | FPGA Configuration Memory |
|---|---|
Use Scenario: Storing incoming/outgoing Ethernet frames in Layer 2 switches before forwarding decisions. IC Role / Device Role / Timing Role: High-bandwidth, low-latency SRAM acting as first-level frame buffer with byte-selective write capability. Use Value: 15 ns tAA enables sub-66 MHz bus operation; BHE/BLE allows header-only updates without rewriting payload bytes. | Use Scenario: Holding configuration bitstreams for Xilinx Spartan or Intel Cyclone FPGAs during power-up or dynamic reconfiguration. IC Role / Device Role / Timing Role: Nonvolatile boot memory replacement-loaded once at startup and accessed randomly during configuration. Use Value: 256K × 16 organization matches typical FPGA bitstream widths; SOJ-44 footprint fits compact PCB layouts. |
| Industrial PLC Data Cache | Digital Signal Processor (DSP) Scratchpad |
Use Scenario: Caching real-time sensor readings and control outputs in programmable logic controllers operating in factory environments. IC Role / Device Role / Timing Role: Fast-access working memory for deterministic scan-cycle execution with guaranteed 15 ns read/write timing. Use Value: Commercial-grade 0°C to +70°C rating covers ambient cabinet temperatures; LVTTL compatibility avoids translation in 3.3 V controller buses. | Use Scenario: Providing low-latency local memory for TI C6000 or Analog Devices SHARC DSPs executing filter kernels or FFT routines. IC Role / Device Role / Timing Role: Dual-port-capable scratchpad via external arbitration-used for coefficient tables and intermediate results. Use Value: tRC = 15 ns supports ≥66 MHz DSP external memory bus; bidirectional I/O simplifies glueless interface design. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed parallel SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY62167EV30LL-45ZSXI | 4-Mbit (256K × 16), 45 ns access, 3.3 V, TSOP-II package - slower but wider temp range (–40°C to +85°C) | Suitable for industrial designs requiring extended temperature operation where 15 ns timing is not critical | Select when thermal robustness outweighs speed; verify PCB pad layout compatibility with TSOP-II vs SOJ-44 |
| AS6C4008-15TIN | 4-Mbit (256K × 16), 15 ns access, 3.3 V, SOJ-44 - same speed and package, but lower ICC (120 mA typ. vs 170 mA max for 71V416YS15PHG) | Preferred for power-constrained battery-backed systems needing identical timing and footprint | Choose for reduced dynamic power; confirm byte-enable behavior matches-AS6C4008 uses OE-based byte control |
Compared with CY62167EV30LL-45ZSXI and AS6C4008-15TIN, the 71V416YS15PHG delivers faster 15 ns timing in SOJ-44 while maintaining LVTTL compatibility and JEDEC-compliant noise-reduction pinout-making it optimal for commercial-speed-critical designs where layout reuse and signal integrity are priorities.
Availability
71V416YS15PHG is available at Aetrix Electronics and suitable for network packet buffering, FPGA configuration storage, and industrial PLC data caching requiring stable component supply and verified SOJ-44 footprint compatibility.
Supply support for 71V416YS15PHG 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) is a fabless semiconductor company specializing in timing, memory interface, RF, and real-time interconnect solutions, acquired by Renesas in 2019.
The IDT71V416 product line delivers high-speed, low-power parallel SRAMs optimized for embedded systems requiring deterministic access, minimal board area, and seamless integration with 3.3 V logic families.
FAQ
What is the maximum clock frequency supported by the 71V416YS15PHG?
The 71V416YS15PHG is a fully static asynchronous SRAM and does not use a clock signal. Its performance is defined by timing parameters such as tRC (15 ns max), which corresponds to a maximum effective cycle rate of approximately 66.7 MHz. System timing must satisfy all AC specifications-including tAA, tOE, and tWP-under actual load and voltage conditions. The 71V416YS15PHG operates reliably without clocks, refresh, or wait states.
Does the 71V416YS15PHG support independent high-byte and low-byte writes?
Yes, the 71V416YS15PHG supports independent high-byte and low-byte writes using its dedicated BHE (pin 25) and BLE (pin 26) inputs. When BHE is low and BLE is high, only I/O8–I/O15 (high byte) are written; when BLE is low and BHE is high, only I/O0–I/O7 (low byte) are written. This eliminates read-modify-write sequences and reduces bus traffic. The 71V416YS15PHG truth table confirms this behavior under "Low Byte Write" and "High Byte Write" modes.
What is the recommended decoupling strategy for the 71V416YS15PHG?
IDT recommends placing a 0.1 µF ceramic capacitor between each VDD (pins 12 and 32) and nearest VSS (pins 11 and 31), with short, low-inductance traces. For systems with high switching activity, add a bulk 4.7 µF tantalum or polymer capacitor near the SOJ-44 footprint. The 71V416YS15PHG's center VDD/VSS pinout minimizes loop inductance-decoupling effectiveness depends on minimizing trace length and avoiding vias in the capacitor path.
Can the 71V416YS15PHG be used with 5 V logic interfaces?
No, the 71V416YS15PHG is strictly a 3.3 V LVTTL device. Its absolute maximum input voltage is VDD + 0.5 V (≤4.1 V), and VIH min is 2.0 V-making it incompatible with 5 V TTL or CMOS logic levels. Direct connection to 5 V buses risks damage or unreliable operation. If interfacing with 5 V systems, level-shifting ICs such as TXB0108 or discrete resistor-divider networks (with current limiting) are required. The 71V416YS15PHG datasheet explicitly specifies 3.0–3.6 V VDD only.
Is pin 28 of the 71V416YS15PHG functional or no-connect?
Pin 28 of the 71V416YS15PHG is designated NC* (No Connect, optional VSS tie). Per the official IDT datasheet (DSC-6442/00, page 2), pin 28 may be left unconnected or tied to VSS-both configurations are electrically valid and do not affect functionality. This flexibility aids PCB layout routing. All timing, power, and logic behavior of the 71V416YS15PHG remains unchanged regardless of pin 28's state.
71V416YS15PHG 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 44-TSOP II
71V416YS15PHG FAQ
1.How can I place an order for 71V416YS15PHG through Aetrix?
Please submit a Request for Quotation (RFQ) for 71V416YS15PHG 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 71V416YS15PHG reliable?
The price and inventory of 71V416YS15PHG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 71V416YS15PHG is usually 5 days.
3.What payment methods are accepted for 71V416YS15PHG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 71V416YS15PHG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 71V416YS15PHG?
71V416YS15PHG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 71V416YS15PHG 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 71V416YS15PHG?
For technical support, including 71V416YS15PHG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 71V416YS15PHG requirements.
6.How does Aetrix verify that 71V416YS15PHG is sourced from the original manufacturer or authorized distributors?
All 71V416YS15PHG 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 71V416YS15PHG meets industry standards.
7.What is the process for return or replacement of 71V416YS15PHG?
All 71V416YS15PHG units undergo pre-shipment inspection (PSI). If there is an issue with 71V416YS15PHG, 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 71V416YS15PHG part is unused and in its original packaging.
Return procedure for 71V416YS15PHG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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