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Renesas IDT71V416VS15PHG8
- Part No.:
- IDT71V416VS15PHG8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 44-TSOP (0.400", 10.16mm Width)
- Datasheet:
-
IDT71V416VS15PHG8.pdf
- Description:
- IC SRAM 4MBIT PARALLEL 44TSOP II
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
IDT71V416VS15PHG8 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 embedded controllers, network packet buffers, and real-time data acquisition systems.
For engineers reviewing the IDT71V416VS15PHG8 datasheet, IDT71V416VS15PHG8 pinout, IDT71V416VS15PHG8 application, or IDT71V416VS15PHG8 equivalent, key selection criteria include access time vs. power trade-offs, SOJ-44 package compatibility, byte enable control timing, and industrial-grade thermal margin requirements.
Technical Context
The IDT71V416VS15PHG8 implements fully static asynchronous circuitry-no clocks or refresh required-and uses dual byte enables (BHE/ BLE) to support independent 8-bit accesses within the 16-bit data bus. Its output enable (OE) provides 5 ns fast turn-on, enabling tight timing in burst-mode memory interfaces.
It features three distinct write control modes: WE-controlled, CS-controlled, and BHE/ BLE-controlled, each with defined setup/hold and pulse width constraints (e.g., tWP = 10 ns min). Input and I/O capacitance are characterized at 7 pF and 8 pF respectively, supporting stable signal integrity on 50 Ω transmission lines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4,194,304 bits (256K × 16), enabling full 16-bit word storage without external data multiplexing |
| Access Time | 15 ns max (tAA), defining minimum address-to-data-valid delay in read cycles |
| 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 bidirectional I/Os (VOH ≥ 2.4 V, VOL ≤ 0.4 V @ 8 mA), ensuring interoperability with 3.3 V microcontrollers and FPGAs |
| Power Consumption | 170 mA dynamic ICC (max), 50 mA ISB (standby), enabling low-power idle states in battery-backed systems |
| Operating Temperature | 0°C to +70°C commercial grade, validated for use in office equipment, test instruments, and non-automotive industrial controls |
| Package | 44-pin plastic SOJ (400 mil), JEDEC-standard footprint with center VDD/VSS pins reducing simultaneous switching noise |
Pinout & Package
44-pin plastic SOJ (SO44-1), 400 mil width, JEDEC-compliant center power/ground pinout (Pins 12 & 25 = VDD; Pins 11 & 34 = VSS).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit address bus selecting one of 256K locations; A0–A17 fully decoded internally |
| I/O0–I/O7 | Low-Byte Data I/O | Bidirectional 8-bit data path enabled by BLE; driven high-Z when BLE = H or CS = H |
| I/O8–I/O15 | High-Byte Data I/O | Bidirectional 8-bit data path enabled by BHE; isolated from bus when BHE = H or CS = H |
| CS | Chip Select | Active-low global enable; device enters standby (ISB1 ≤ 20 mA) when high |
| WE | Write Enable | Active-low write strobe; initiates write cycle when CS and BHE/ BLE are also low |
| OE | Output Enable | Active-low output driver control; enables outputs in ≤5 ns (tOE), critical for fast read turnaround |
| BLE | Low-Byte Enable | Active-low control for I/O0–I/O7; allows 8-bit writes without affecting high byte |
| BHE | High-Byte Enable | Active-low control for I/O8–I/O15; enables partial-word writes aligned to upper byte boundary |
| VDD | Power Supply | 3.3 V core and I/O supply; pins 12 and 25 provide distributed power delivery per JEDEC layout |
| VSS | Ground | Signal and power ground reference; pins 11 and 34 placed centrally to minimize ground bounce |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC Center Power/Ground Pinout | Reduces simultaneous switching noise by symmetrically distributing VDD/VSS across package center, improving signal integrity in dense PCB layouts |
| Dual Byte Enable (BHE/ BLE) | Enables independent 8-bit read/write operations without external logic, reducing FPGA I/O count and simplifying memory-mapped peripheral design |
| 5 ns Output Enable Response | Minimizes read cycle dead time in pipelined bus architectures, supporting sustained throughput near theoretical bandwidth limit |
| Three Write Control Modes | Supports flexible timing integration: WE-controlled (standard), CS-controlled (address-stable writes), and BHE/ BLE-controlled (byte-selective writes) |
| Low-Power Standby Mode | Draws ≤20 mA ISB1 (full standby) at max VDD, enabling energy-efficient sleep states in portable instrumentation |
Applications
| Network Packet Buffer | Industrial PLC Data Cache |
|---|---|
Use Scenario: Storing incoming Ethernet frames in real-time before CPU processing in a managed switch ASIC interface. IC Role / Device Role / Timing Role: Asynchronous 16-bit SRAM buffer providing zero-wait-state access to frame headers and payload segments. Use Value: 15 ns tAA enables sub-67 MHz bus clock alignment; byte enables allow header-only reads without disturbing payload bytes. | Use Scenario: Holding real-time I/O status, ladder logic variables, and motion control setpoints in a modular programmable logic controller. IC Role / Device Role / Timing Role: Non-refreshed, deterministic-access memory for deterministic scan-cycle execution in hard real-time control loops. Use Value: Fully static operation eliminates refresh overhead; 0°C to +70°C rating matches industrial enclosure ambient limits. |
| Test Equipment Waveform Memory | DSP Co-Processor Scratchpad |
Use Scenario: Capturing high-speed analog samples from digitizers for post-acquisition analysis in oscilloscopes and spectrum analyzers. IC Role / Device Role / Timing Role: High-bandwidth, low-latency scratchpad storing transient waveform snapshots prior to FFT or filtering. Use Value: 170 mA ICC (max) supports continuous 15 ns read/write bursts; SOJ-44 package fits legacy test board footprints. | Use Scenario: Serving as local data memory for TI C6000 or Analog Devices SHARC DSPs executing FIR filter kernels or motor control algorithms. IC Role / Device Role / Timing Role: Tightly coupled 16-bit memory mapped directly to DSP external bus, minimizing instruction stall cycles. Use Value: LVTTL compatibility ensures direct connection to DSP EBUS without level shifters; tOH = 4 ns guarantees data hold during address transitions. |
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 |
|---|---|---|---|
| CY62148EV30LL-15ZSXI | 4-Mbit (256K × 16), 15 ns, 3.3 V, SOJ-44, but rated –40°C to +85°C industrial grade | Required for extended temperature deployments (e.g., outdoor base stations, factory-floor HMIs) | Select when operating beyond 0°C to +70°C or requiring Cypress's longer product lifecycle commitment |
| AS6C4008-15ZIN | 4-Mbit (256K × 16), 15 ns, 3.3 V, TSOP-II-44 (not SOJ); lower ICC (150 mA) but no BGA option | Suitable where board space favors thin-profile TSOP over SOJ, and byte enables are not required | Choose for cost-sensitive consumer electronics where SOJ socketing is unnecessary and thermal profile is benign |
Compared with IDT71V416VS15PHG8, CY62148EV30LL-15ZSXI offers wider temperature tolerance but lacks IDT's JEDEC center VDD/VSS noise suppression; AS6C4008-15ZIN trades SOJ compatibility for TSOP footprint and omits BGA packaging, limiting upgrade paths in space-constrained designs.
Availability
IDT71V416VS15PHG8 is available at Aetrix Electronics and suitable for network packet buffering, industrial PLC data caching, and test equipment waveform memory requiring stable component supply and long-term obsolescence management.
Supply support for IDT71V416VS15PHG8 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, designed high-performance timing, memory, and interface ICs for communications, computing, and industrial markets.
IDT71V416VS15PHG8 belongs to IDT's 3.3 V CMOS SRAM product line, engineered for deterministic, low-latency memory access in synchronous and asynchronous bus systems without refresh overhead.
FAQ
What is the maximum operating frequency supported by the IDT71V416VS15PHG8?
The IDT71V416VS15PHG8 does not operate on a clock; it is an asynchronous SRAM. Its performance is specified by access time (tAA ≤ 15 ns) and cycle time (tRC ≤ 15 ns), supporting effective bus rates up to 66.7 MHz (1/15 ns) in ideal conditions. Actual system throughput depends on controller timing margins, bus loading, and OE/WE assertion sequencing-not a fixed clock frequency.
Can the IDT71V416VS15PHG8 be used with a 5 V microcontroller interface?
No-the IDT71V416VS15PHG8 is strictly a 3.3 V LVTTL device with VIH(min) = 2.0 V and VIL(max) = 0.8 V. Direct connection to 5 V logic violates absolute maximum ratings (VIN ≤ VDD + 0.5 V = 3.85 V) and risks permanent damage. Level translation (e.g., TXB0108 or discrete MOSFET buffers) is mandatory for 5 V host interfacing.
Does the IDT71V416VS15PHG8 require refresh circuitry or periodic memory maintenance?
No-the IDT71V416VS15PHG8 is a fully static RAM using CMOS latches for data storage. It retains data indefinitely as long as VDD is applied and CS remains high (standby) or low (active), with no clocks, timers, or refresh cycles needed. This eliminates controller overhead and guarantees deterministic access latency.
What is the function of Pin 28 on the IDT71V416VS15PHG8 SOJ package?
Pin 28 on the IDT71V416VS15PHG8 SOJ package is designated NC* (No Connect), meaning it has no internal connection and must be left unconnected. The datasheet explicitly notes "Pin 28 can either be a NC or connected to Vss"-however, connecting it to VSS is not recommended unless validated by board-level noise testing, as it may compromise the JEDEC center-ground layout integrity.
How does the byte enable functionality work on the IDT71V416VS15PHG8?
The IDT71V416VS15PHG8 uses separate active-low BHE (high-byte enable) and BLE (low-byte enable) inputs to control 8-bit segments of the 16-bit I/O bus. When only BLE = L and BHE = H, only I/O0–I/O7 are driven or sampled; when only BHE = L and BLE = H, only I/O8–I/O15 are active. Both low enables full 16-bit word access. This allows precise partial-word writes without read-modify-write sequences.
IDT71V416VS15PHG8 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 44-TSOP II
IDT71V416VS15PHG8 FAQ
1.How can I place an order for IDT71V416VS15PHG8 through Aetrix?
Please submit a Request for Quotation (RFQ) for IDT71V416VS15PHG8 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 IDT71V416VS15PHG8 reliable?
The price and inventory of IDT71V416VS15PHG8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IDT71V416VS15PHG8 is usually 5 days.
3.What payment methods are accepted for IDT71V416VS15PHG8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IDT71V416VS15PHG8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IDT71V416VS15PHG8?
IDT71V416VS15PHG8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IDT71V416VS15PHG8 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 IDT71V416VS15PHG8?
For technical support, including IDT71V416VS15PHG8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IDT71V416VS15PHG8 requirements.
6.How does Aetrix verify that IDT71V416VS15PHG8 is sourced from the original manufacturer or authorized distributors?
All IDT71V416VS15PHG8 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 IDT71V416VS15PHG8 meets industry standards.
7.What is the process for return or replacement of IDT71V416VS15PHG8?
All IDT71V416VS15PHG8 units undergo pre-shipment inspection (PSI). If there is an issue with IDT71V416VS15PHG8, 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 IDT71V416VS15PHG8 part is unused and in its original packaging.
Return procedure for IDT71V416VS15PHG8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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