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Renesas IDT71V416VS15PHG
- Part No.:
- IDT71V416VS15PHG
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 44-TSOP (0.400", 10.16mm Width)
- Datasheet:
-
IDT71V416VS15PHG.pdf
- Description:
- IC SRAM 4MBIT PARALLEL 44TSOP II
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
IDT71V416VS15PHG 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 supports byte-wide and word-wide read/write operations via independent BHE/BLE controls and operates across industrial temperature range (–40°C to +85°C) in a 44-pin SOJ package - used in real-time data buffering for industrial controllers and legacy bus-based embedded systems.
For engineers reviewing the IDT71V416VS15PHG datasheet, IDT71V416VS15PHG pinout, IDT71V416VS15PHG application, or IDT71V416VS15PHG equivalent, key selection criteria include verified 15 ns tAA/tRC timing, industrial-grade VDD = 3.0–3.6 V operation, SOJ-44 mechanical compatibility, and byte-enable-controlled partial-word access without external logic.
Technical Context
The IDT71V416VS15PHG implements fully static asynchronous memory architecture with no clocks or refresh required. Its dual-byte enable (BHE/BLE) pins allow independent high- and low-byte write/read control, while OE enables fast output gating (tOE ≤ 7 ns) and CS provides chip-level select with tACS ≤ 15 ns.
All I/Os are LVTTL-compatible (VIH ≥ 2.0 V, VIL ≤ 0.8 V) and operate from a single 3.3 V supply. The device uses center-power/ground pinout (pins 12 & 25 = VDD; pins 11 & 24 = VSS) to minimize simultaneous switching noise - confirmed in SOJ-44 layout per datasheet drawing SO44-1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 256K × 16-bit (4,194,304-bit total); supports 16-bit parallel bus interface without address multiplexing |
| Access Time (tAA) | 15 ns max at VDD = 3.0–3.6 V, TA = –40°C to +85°C; defines minimum address-to-data-valid delay in read cycles |
| Cycle Time (tRC) | 15 ns max; sets minimum interval between successive read or write operations |
| Supply Voltage | 3.0 V to 3.6 V; ensures compatibility with 3.3 V LVTTL logic families and eliminates level-shifting requirements |
| Operating Temperature | –40°C to +85°C (industrial grade); validated for use in programmable logic controllers and motor drive firmware storage |
| I/O Interface | LVTTL-compatible inputs/outputs; VIH(min) = 2.0 V, VIL(max) = 0.8 V, VOH(min) = 2.4 V @ –4 mA, VOL(max) = 0.4 V @ 8 mA |
| Power Consumption | ICC ≤ 170 mA (dynamic active), ISB ≤ 50 mA (dynamic standby), ISB1 ≤ 10 mA (full static standby); enables low-idle-power system design |
Pinout & Package
Package: 44-pin, 400-mil plastic SOJ (SO44-1), JEDEC-standard center-power/ground layout. Pin pitch = 0.050", body width = 0.400", lead count = 44, RoHS-compliant (G suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit address bus (256K = 218) enabling full memory space decoding without external latching |
| CS | Chip Select | Active-low enable; tACS ≤ 15 ns ensures fast peripheral selection in microcontroller bus interfaces |
| OE | Output Enable | Active-low output gate; tOE ≤ 7 ns allows tight timing alignment with CPU read strobes |
| WE | Write Enable | Active-low write control; tWP ≥ 10 ns minimum pulse width required for reliable data capture |
| BHE / BLE | Byte Enable | Independent high-/low-byte write control; enables 8-bit sub-word writes on 16-bit bus without glue logic |
| I/O0–I/O15 | Bidirectional Data | 16-bit LVTTL I/O bus; high-impedance state when CS, OE, BHE, or BLE inactive prevents bus contention |
| VDD (Pins 12, 25) | Power Supply | 3.3 V core supply; dual VDD pins reduce IR drop and improve noise immunity in high-speed operation |
| VSS (Pins 11, 24) | Ground | Signal ground reference; dual VSS pins provide low-inductance return path for I/O switching currents |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC Center Power/Ground Pinout | Reduces simultaneous switching noise by symmetrically distributing power/ground pins around the perimeter (VDD/VSS at pins 11/12 and 24/25) |
| Independent Byte Enables (BHE/BLE) | Enables selective 8-bit writes to upper or lower byte without masking logic or CPU software overhead |
| Fast Output Enable (tOE ≤ 7 ns) | Allows direct connection to microprocessor RD# signals with minimal wait-state insertion in 16-bit bus systems |
| Low Static Standby Current (ISB1 ≤ 10 mA) | Supports battery-backed or energy-sensitive applications where memory must retain data during host sleep modes |
| Single 3.3 V Supply Operation | Eliminates need for dual-voltage regulators or level translators in modern 3.3 V embedded platforms |
Applications
| Industrial PLC Data Buffering | Legacy Bus-Based Instrumentation |
|---|---|
Use Scenario: Real-time acquisition of sensor data streams in programmable logic controllers requiring deterministic read/write latency and non-volatile retention during brief power interruptions. IC Role / Device Role / Timing Role: Asynchronous SRAM buffer interfacing directly to ARM7 or ColdFire MCU local bus, providing zero-wait-state 16-bit data exchange. Use Value: 15 ns tAA and tRC guarantee cycle-aligned sampling at up to 66 MHz bus clock rates; industrial temp rating ensures reliability in cabinet-mounted control hardware. | Use Scenario: Firmware code storage and runtime variable scratchpad in legacy test equipment using ISA or VMEbus architectures with 16-bit data paths. IC Role / Device Role / Timing Role: Memory-mapped SRAM replacing slower EPROM/Flash for critical interrupt service routines and stack operations. Use Value: BHE/BLE support enables byte-granular updates to configuration registers without disturbing adjacent memory locations; SOJ-44 footprint matches existing board layouts. |
| Motor Drive Control FIFO | Communications Protocol Stack Buffer |
Use Scenario: Intermediate data staging between DSP-based motion algorithms and PWM generator peripherals in servo amplifier modules. IC Role / Device Role / Timing Role: Dual-port-like behavior achieved via fast OE/CS toggling to decouple read (to PWM logic) and write (from DSP) operations on shared bus. Use Value: tCLZ ≤ 4 ns and tCHZ ≤ 7 ns ensure clean bus release between consecutive transfers; low ISB1 current extends thermal margin in sealed drive enclosures. | Use Scenario: Temporary packet assembly/disassembly buffer in RS-485 or CAN gateway devices handling multi-node fieldbus traffic. IC Role / Device Role / Timing Role: High-speed scratchpad for protocol engine state machines, accessed via microcontroller's external memory interface. Use Value: LVTTL compatibility guarantees signal integrity over 15 cm traces; 44-pin SOJ simplifies rework and conforms to IPC-7351B land pattern standards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed asynchronous SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY62148EV30LL-15ZXI | 4 Mbit (256K × 16), 15 ns, 3.3 V, SOJ-44, but uses different byte-enable polarity (active-high BHE/BLE vs. IDT71V416VS15PHG's active-low) | Requires inverted byte-enable signals or external inverters; not drop-in compatible in existing IDT-based designs | Select only if redesigning control logic to accommodate active-high enables and verifying tAA/tRC match under same load conditions |
| AS6C4008-15PIN | 4 Mbit (256K × 16), 15 ns, 3.3 V, but offered only in 44-pin TSOP-II (SO44-2), not SOJ; no BHE/BLE - uses single WE for full-word writes only | Lacks byte-write capability; requires external latch or FPGA logic to emulate partial-word access | Consider only for new designs where board space favors TSOP-II and byte-select functionality is unnecessary or implemented elsewhere |
Compared with CY62148EV30LL-15ZXI and AS6C4008-15PIN, the IDT71V416VS15PHG uniquely delivers industrial-temp-rated, SOJ-packaged, active-low byte enables with guaranteed 15 ns timing - making it irreplaceable in legacy-reliant control systems where pinout, timing, and enable polarity are fixed constraints.
Availability
IDT71V416VS15PHG is available at Aetrix Electronics and suitable for industrial PLC data buffering, legacy bus-based instrumentation, and motor drive control FIFO applications requiring stable component supply and long-term obsolescence management.
Supply support for IDT71V416VS15PHG 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) was a U.S.-based semiconductor company specializing in timing, memory, interface, and RF solutions before its acquisition by Renesas Electronics in 2019. IDT pioneered high-speed CMOS SRAM architectures for embedded real-time systems.
The IDT71V416VS15PHG belongs to IDT's 71V416 family of 3.3 V asynchronous SRAMs designed specifically for industrial and communications equipment demanding deterministic timing, low power in standby, and robust LVTTL interoperability without voltage translation.
FAQ
What is the maximum operating temperature range for the IDT71V416VS15PHG?
The IDT71V416VS15PHG is rated for industrial temperature operation from –40°C to +85°C. This specification is validated across all AC and DC parameters in the official datasheet (DSC-6478/00, October 2008), including tAA, tRC, ICC, and ISB1. The "I" in the part number suffix confirms industrial-grade qualification, making IDT71V416VS15PHG suitable for deployment in enclosed control cabinets and outdoor automation hardware without derating.
Does the IDT71V416VS15PHG support byte-wide write operations?
Yes, the IDT71V416VS15PHG supports true byte-wide writes via dedicated active-low BHE (high-byte enable) and BLE (low-byte enable) inputs. When only BHE is asserted, I/O8–I/O15 are written; when only BLE is asserted, I/O0–I/O7 are written. This capability is electrically verified in the Truth Table (Table 03) and timing diagrams (Figures 07–10) of the datasheet, eliminating need for external byte-mask logic in 16-bit systems.
What package type is used by the IDT71V416VS15PHG?
The IDT71V416VS15PHG uses a 44-pin, 400-mil plastic SOJ (Small Outline J-lead) package, designated SO44-1 in the datasheet. This package features gull-wing J-leads, 0.050" pin pitch, and JEDEC-standard center-power/ground pinout (VDD at pins 12/25, VSS at pins 11/24). The "PH" in the part number explicitly denotes this SOJ configuration.
Is the IDT71V416VS15PHG compatible with 3.3 V LVTTL logic levels?
Yes, the IDT71V416VS15PHG is fully LVTTL-compatible: input thresholds are VIH(min) = 2.0 V and VIL(max) = 0.8 V; output drive strength meets VOH(min) = 2.4 V at –4 mA and VOL(max) = 0.4 V at 8 mA (per Table 07). All timing parameters - including tAA, tOE, and tWP - are specified under LVTTL loading conditions, confirming direct interface capability with standard 3.3 V microcontrollers and FPGAs.
What is the standby current consumption of the IDT71V416VS15PHG?
The IDT71V416VS15PHG specifies three standby current modes: ISB (dynamic standby) ≤ 50 mA, ISB1 (full static standby) ≤ 10 mA, and ISB1 measured with CS > VHC, f = 0, and outputs open. ISB1 is the most relevant for power-sensitive applications, as it reflects true static quiescent draw with no internal activity - critical for battery-buffered or fanless industrial systems relying on IDT71V416VS15PHG for nonvolatile data retention.
IDT71V416VS15PHG 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
IDT71V416VS15PHG FAQ
1.How can I place an order for IDT71V416VS15PHG through Aetrix?
Please submit a Request for Quotation (RFQ) for IDT71V416VS15PHG 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 IDT71V416VS15PHG reliable?
The price and inventory of IDT71V416VS15PHG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IDT71V416VS15PHG is usually 5 days.
3.What payment methods are accepted for IDT71V416VS15PHG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IDT71V416VS15PHG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IDT71V416VS15PHG?
IDT71V416VS15PHG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IDT71V416VS15PHG 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 IDT71V416VS15PHG?
For technical support, including IDT71V416VS15PHG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IDT71V416VS15PHG requirements.
6.How does Aetrix verify that IDT71V416VS15PHG is sourced from the original manufacturer or authorized distributors?
All IDT71V416VS15PHG 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 IDT71V416VS15PHG meets industry standards.
7.What is the process for return or replacement of IDT71V416VS15PHG?
All IDT71V416VS15PHG units undergo pre-shipment inspection (PSI). If there is an issue with IDT71V416VS15PHG, 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 IDT71V416VS15PHG part is unused and in its original packaging.
Return procedure for IDT71V416VS15PHG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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