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Renesas IDT71V416VS12BE
- Part No.:
- IDT71V416VS12BE
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 48-TFBGA
- Datasheet:
-
IDT71V416VS12BE.pdf
- Description:
- IC SRAM 4MBIT PARALLEL 48CABGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,881
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Product details
Overview
IDT71V416VS from Integrated Device Technology is a 4-Mbit (256K × 16) high-speed CMOS static RAM with 10 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 commercial temperature range (0°C to +70°C) in 44-pin SOJ package.
For engineers reviewing the IDT71V416VS datasheet, IDT71V416VS pinout, IDT71V416VS application, or IDT71V416VS equivalent, key selection considerations include its 10 ns read cycle time, LVTTL-compatible bidirectional I/Os, low-Z output enable response (5 ns), and support for asynchronous static memory interfacing in legacy bus architectures without clocks or refresh.
Technical Context
The IDT71V416VS implements fully static asynchronous circuitry - no clocks, no refresh required - using high-reliability CMOS process. Its address decoding, sense amplifiers, and write drivers are optimized for deterministic timing across all access modes: word, high-byte, low-byte, and deselected standby.
Three distinct control paths govern data flow: chip select (CS) enables device-level access, output enable (OE) gates output drivers independently of CS, and byte enables (BHE/BLE) allow 8-bit granularity writes without affecting the opposite byte - critical for x86 and embedded microprocessor bus compatibility.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4,194,304 bits (256K × 16), enabling direct replacement of legacy 256K-word SRAMs in 16-bit data buses. |
| Access Time (tAA) | 10 ns max - guarantees sub-100 MHz bus interface timing margin for synchronous controllers or glueless CPU connections. |
| Supply Voltage | 3.0 V to 3.6 V - compatible with standard 3.3 V logic rails; no level-shifting required for LVTTL peripherals. |
| I/O Interface | LVTTL-compatible bidirectional I/Os (I/O0–I/O15) - directly interfaces with Intel 80x86, Motorola 68K, and FPGA I/O banks without buffers. |
| Standby Current (ISB1) | 20 mA max - enables low-power hold mode during processor idle cycles while retaining full data integrity. |
| Package | 44-pin, 400-mil plastic SOJ (SO44-1) - industry-standard footprint supporting wave-solder and rework compatibility. |
| Temperature Range | Commercial: 0°C to +70°C - validated for desktop computing, industrial HMI, and communications backplane applications. |
Pinout & Package
Package: 44-pin, 400-mil plastic SOJ (SO44-1), JEDEC-standard center-power/ground layout reducing simultaneous switching noise.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit address bus supporting full 256K-word addressing; A0–A17 decoded internally for row/column selection. |
| CS | Chip Select | Active-low global enable; must be asserted before OE or WE to initiate any access - prevents spurious reads/writes. |
| OE | Output Enable | Active-low output gate; allows data output even when CS is active - enables multiplexed bus sharing with other devices. |
| WE | Write Enable | Active-low write strobe; latches input data on falling edge - defines write cycle boundary independent of CS timing. |
| BHE / BLE | Byte Enable Inputs | Active-low controls for upper (I/O8–I/O15) and lower (I/O0–I/O7) bytes - enables 8-bit writes without disturbing adjacent byte. |
| I/O0–I/O15 | Bidirectional Data I/O | True bidirectional LVTTL ports - automatically switch direction based on WE and OE states; no external direction control needed. |
| VDD / VSS | Power / Ground | Center-placed VDD (Pin 12, 33) and VSS (Pin 11, 34) reduce ground bounce and improve signal integrity in high-speed operation. |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC Center Power/Ground Pinout | Reduces simultaneous switching noise by 30–40% vs. corner-placed power pins - critical for stable operation in dense PCB layouts. |
| Independent Byte Enables (BHE/BLE) | Enables true 8-bit write capability without read-modify-write overhead - essential for x86-compatible BIOS and firmware updates. |
| 5 ns Output Enable Response (tOE) | Supports fast burst-mode reads in microprocessor systems where OE is toggled per word - minimizes bus turnaround latency. |
| Full Static Operation | No clocks or refresh required - eliminates timing constraints from system clock domain; simplifies design in asynchronous subsystems. |
| Low-Power Standby Mode (ISB1 = 20 mA) | Reduces system power by >90% vs. active mode during CPU sleep - extends battery life in portable instrumentation and test equipment. |
Applications
| Industrial PLC Memory Buffer | Legacy PC BIOS Storage |
|---|---|
|
Use Scenario: Storing real-time I/O mapping tables and configuration registers in programmable logic controllers with 16-bit ISA-style buses. IC Role / Device Role / Timing Role: Asynchronous static RAM providing zero-wait-state memory access for deterministic scan-cycle execution. Use Value: 10 ns tAA ensures full compatibility with 80C188EC and similar industrial microcontrollers running at 25 MHz without wait states. |
Use Scenario: Non-volatile shadow RAM for boot firmware in legacy desktop motherboards using Intel 430HX chipset. IC Role / Device Role / Timing Role: High-speed writeable memory mapped into upper memory area (UMA) for runtime BIOS patching. Use Value: BHE/BLE support enables atomic 8-bit firmware updates without corrupting adjacent configuration bytes during power loss. |
| Communications Backplane Buffer | Test Equipment Pattern Memory |
|
Use Scenario: Frame buffering in T1/E1 line interface cards requiring deterministic latency for jitter-sensitive timing recovery. IC Role / Device Role / Timing Role: Dual-port-capable SRAM used as first-in-first-out (FIFO) buffer between serial PHY and parallel bus controller. Use Value: 10 ns read/write cycle time supports 100+ Mbps data throughput with <100 ns end-to-end latency budget. |
Use Scenario: Storing digital stimulus/response patterns in automated test equipment (ATE) with parallel pattern generators. IC Role / Device Role / Timing Role: Static memory holding multi-cycle test vectors synchronized to system clock edges via external address sequencer. Use Value: Full static operation eliminates refresh interference - guarantees bit-perfect pattern replay across extended test durations. |
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 |
|---|---|---|---|
| Cypress CY7C1041DV33-10ZSXI | Same density (256K × 16), 10 ns speed, but uses 48-pin TSOP II package and has different pinout (no dedicated BHE/BLE). | Lacks byte-enable control - requires external logic or software masking for 8-bit writes. | Select when board space favors TSOP and byte-granular writes are not required. |
| ISSI IS61LV25616AL-10MLI | Identical 44-pin SOJ footprint and BHE/BLE pinout; 10 ns speed grade; wider industrial temp range (–40°C to +85°C). | Higher ISB1 (30 mA vs. 20 mA) and slightly higher tCHZ (7 ns vs. 5 ns) affect low-power and bus release timing. | Select when extended temperature operation is mandatory and minor standby current increase is acceptable. |
Compared with IDT71V416VS, CY7C1041DV33-10ZSXI requires PCB redesign due to incompatible pinout and lacks native byte write control, while IS61LV25616AL-10MLI offers drop-in replacement capability with broader temperature support but trades off 10 mA higher static current and slower output disable timing.
Availability
IDT71V416VS is available at Aetrix Electronics and suitable for industrial PLC memory buffers, legacy PC BIOS storage, communications backplane buffering, and test equipment pattern memory requiring stable component supply and long-term obsolescence management.
Supply support for IDT71V416VS 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, is a fabless semiconductor company specializing in timing, memory interface, RF, and sensor solutions for communications and computing infrastructure.
IDT71V416VS belongs to IDT's legacy high-speed CMOS SRAM product line, designed specifically for plug-in replacement of aging 5 V SRAMs in 3.3 V systems requiring deterministic, clock-free memory access.
FAQ
What is the operating voltage range for IDT71V416VS?
IDT71V416VS operates over a supply voltage range of 3.0 V to 3.6 V. This 3.3 V nominal specification ensures compatibility with LVTTL logic families and eliminates the need for level shifters in standard 3.3 V system designs. The device is characterized across this full range for all AC and DC parameters, including tAA, ICC, and VOL/VOH.
Does IDT71V416VS require a clock or refresh signal?
No, IDT71V416VS uses fully static asynchronous circuitry and requires no clock or refresh signals. Data retention is maintained indefinitely as long as VDD remains within specification and CS is held high during standby. This architecture simplifies integration into microcontroller, FPGA, and legacy bus-based systems where clock distribution is constrained.
How does the byte enable functionality work on IDT71V416VS?
IDT71V416VS provides two independent active-low byte enable inputs: BHE (pins 37, controls I/O8–I/O15) and BLE (pin 36, controls I/O0–I/O7). When only one is asserted low with CS and WE low, only the corresponding 8-bit byte is written; the other byte retains its prior value. This enables true 8-bit writes without read-modify-write sequences.
What package type is used for IDT71V416VS?
IDT71V416VS is packaged in a 44-pin, 400-mil plastic SOJ (SO44-1) with JEDEC-standard center-power/ground pinout. Pin 1 is I/O7; VDD appears on pins 12 and 33; VSS on pins 11 and 34. This package supports wave soldering and is compatible with standard SOJ socket footprints used in industrial and telecom equipment.
Is IDT71V416VS suitable for industrial temperature applications?
IDT71V416VS is rated for commercial temperature range only (0°C to +70°C). For industrial applications (–40°C to +85°C), the functionally identical IDT71V416VL-10BE or IS61LV25616AL-10MLI should be selected. Using IDT71V416VS outside its specified range may result in timing violations or increased leakage current beyond datasheet limits.
IDT71V416VS12BE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 48-TFBGA
- Packaging:
- Tray
- 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:
- 12ns
- Access Time:
- 12 ns
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-CABGA (9x9)
IDT71V416VS12BE FAQ
1.How can I place an order for IDT71V416VS12BE through Aetrix?
Please submit a Request for Quotation (RFQ) for IDT71V416VS12BE 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 IDT71V416VS12BE reliable?
The price and inventory of IDT71V416VS12BE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IDT71V416VS12BE is usually 5 days.
3.What payment methods are accepted for IDT71V416VS12BE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IDT71V416VS12BE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IDT71V416VS12BE?
IDT71V416VS12BE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IDT71V416VS12BE 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 IDT71V416VS12BE?
For technical support, including IDT71V416VS12BE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IDT71V416VS12BE requirements.
6.How does Aetrix verify that IDT71V416VS12BE is sourced from the original manufacturer or authorized distributors?
All IDT71V416VS12BE 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 IDT71V416VS12BE meets industry standards.
7.What is the process for return or replacement of IDT71V416VS12BE?
All IDT71V416VS12BE units undergo pre-shipment inspection (PSI). If there is an issue with IDT71V416VS12BE, 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 IDT71V416VS12BE part is unused and in its original packaging.
Return procedure for IDT71V416VS12BE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
IDT71V416VS12BE Tags
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M24C02-WMN6TP
STMicroelectronics
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AT24C02C-XHM-T
Microchip Technology
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AT21CS01-STUM10-T
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24LC01BT-I/OT
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M24C02-FMC6TG
STMicroelectronics
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AT24CS02-SSHM-T
Microchip Technology
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93LC46BT-I/OT
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AT24C04C-SSHM-T
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24LC01BT-I/SN
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24AA02UIDT-I/OT
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AT24C08C-STUM-T
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