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Renesas IDT71V416VS12BEI
- Part No.:
- IDT71V416VS12BEI
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 48-TFBGA
- Datasheet:
-
IDT71V416VS12BEI.pdf
- Description:
- IC SRAM 4MBIT PARALLEL 48CABGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,512
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Product details
Overview
IDT71V416VS12BEI from Integrated Device Technology is a 256K × 16-bit (4 Mbit), 3.3V CMOS asynchronous static RAM with 12 ns access time, JEDEC-compliant center power/ground pinout, and industrial temperature range (–40°C to +85°C). It supports byte-wide and word-wide read/write operations via independent BHE/BLE controls and operates without clocks or refresh in embedded memory subsystems.
For engineers reviewing the IDT71V416VS12BEI datasheet, IDT71V416VS12BEI pinout, IDT71V416VS12BEI application, or IDT71V416VS12BEI equivalent, key selection criteria include its 12 ns tAA/tRC timing, LVTTL-compatible I/O, single-supply 3.3V operation, SOJ-44 package, and industrial-grade reliability for real-time control buffers and legacy bus interfaces.
Technical Context
The IDT71V416VS12BEI implements fully static asynchronous circuitry with no clock or refresh required. Its address decoding supports A0–A17 (18-bit addressing), and bidirectional I/O lines (I/O0–I/O15) are LVTTL-compatible with VOH ≥ 2.4 V and VOL ≤ 0.4 V at specified load conditions.
Control logic includes independent Chip Select (CS), Output Enable (OE), Write Enable (WE), and dual-byte enables (BHE/BLE), enabling flexible 8-bit or 16-bit data transfers. Timing is characterized for industrial temperature range with tCLZ = 4 ns and tCHZ = 6 ns under standard AC test loads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 256K × 16-bit (4,194,304-bit total); supports 16-bit data bus interfacing without external multiplexing |
| Access Time (tAA) | 12 ns max; guarantees valid data output within 12 ns of address stabilization for deterministic timing in synchronous bus systems |
| Supply Voltage | 3.0 V to 3.6 V; compatible with standard 3.3V LVTTL logic rails and eliminates need for level-shifting circuitry |
| Operating Temperature | –40°C to +85°C; qualified for industrial environments including motor drives and programmable logic controllers |
| Power Dissipation | ICC = 180 mA max (dynamic), ISB1 = 20 mA max (full standby); enables low-power hold modes during processor idle cycles |
| I/O Interface | LVTTL-compatible inputs/outputs; ensures direct connection to FPGA, microcontroller, or ASIC I/O banks without interface logic |
| Package | 44-pin, 400-mil plastic SOJ (SO44-1); surface-mount compatible with standard reflow profiles and legacy PCB footprints |
Pinout & Package
Package: 44-pin, 400-mil plastic SOJ (SO44-1), JEDEC-standard center power/ground layout for noise reduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit address bus; selects one of 256K words; A0–A17 fully decoded internally |
| CS | Chip Select | Active-low enable; device enters standby (high-Z I/O, low ISB) when high |
| OE | Output Enable | Active-low control; enables output drivers only when CS is low and OE is low |
| WE | Write Enable | Active-low write strobe; initiates write cycle when CS and BHE/BLE are asserted |
| BHE, BLE | Byte Enable | Independent high/low byte controls; allow 8-bit writes without disturbing adjacent byte |
| I/O0–I/O15 | Bidirectional Data | 16-bit LVTTL I/O bus; direction controlled by WE and CS state; high-impedance when deselected |
| VDD | Power Supply | +3.3V supply; two pins (pins 12 and 33) for reduced IR drop and improved decoupling |
| VSS | Ground | Ground reference; two pins (pins 11 and 34) placed centrally per JEDEC noise-reduction layout |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC Center Power/Ground Pinout | Reduces simultaneous switching noise (SSN) by symmetrically distributing VDD/VSS pins across the SOJ body |
| Independent Byte Enables (BHE/BLE) | Enables partial-word writes - e.g., updating only upper or lower byte without read-modify-write overhead |
| 12 ns Access & Cycle Times | Meets timing requirements of 80 MHz ISA, VME, and legacy microprocessor buses without wait states |
| Single 3.3V Supply Operation | Eliminates dual-rail design complexity and reduces BOM count versus 5V/3.3V mixed-signal systems |
| Full Standby Current ≤20 mA | Supports low-power sleep modes in battery-backed or energy-constrained industrial controllers |
Applications
| Industrial PLC Memory Buffer | Legacy Bus Interface Cache |
|---|---|
Use Scenario: Real-time I/O data buffering in programmable logic controllers where deterministic latency and non-volatility backup are critical. IC Role / Device Role / Timing Role: Asynchronous SRAM buffer between CPU and field I/O modules; absorbs burst writes and provides zero-wait-state reads. Use Value: 12 ns tAA ensures sub-83 MHz bus compatibility; industrial temp rating (-40°C to +85°C) sustains operation in uncontrolled cabinet environments. |
Use Scenario: High-speed cache for legacy 16-bit ISA or VMEbus peripherals requiring fast local memory access. IC Role / Device Role / Timing Role: Word-accessible memory mapped directly into host address space; supports both byte and word transactions via BHE/BLE. Use Value: JEDEC center VDD/VSS layout minimizes noise coupling on shared backplane buses; LVTTL I/O avoids level-shifter components. |
| Motor Drive Control FIFO | FPGA Configuration Scratchpad |
Use Scenario: Command queue storage in servo drive firmware, holding motion profile segments prior to execution. IC Role / Device Role / Timing Role: Dual-port-like behavior enabled by independent OE/WE/BHE/BLE; allows concurrent read-ahead and write-fill operations. Use Value: tCLZ = 4 ns and tOH = 4 ns support tight timing margins in closed-loop control loops running at >10 kHz update rates. |
Use Scenario: Temporary data scratchpad for Xilinx Spartan or Altera Cyclone FPGAs during configuration or runtime parameter loading. IC Role / Device Role / Timing Role: External SRAM used as off-chip RAM resource for soft-core processors (e.g., MicroBlaze, Nios II) or DMA buffers. Use Value: SOJ-44 footprint matches legacy FPGA carrier board layouts; 3.3V compatibility aligns with FPGA I/O bank voltage settings. |
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 |
|---|---|---|---|
| CY62167EV30LL-45ZSXI | 4 Mbit (256K × 16), 45 ns access, 3.3V, TSOP-44; higher power, slower speed | Suitable for cost-sensitive, non-real-time applications where 12 ns timing is not required | Select if system timing budget allows ≥45 ns access and board uses TSOP-44 footprint |
| AS6C4008-12BIN | 4 Mbit (256K × 16), 12 ns access, 3.3V, SOJ-44; no BHE/BLE, single-byte enable only | Lacks independent high/low byte control - requires external logic for partial-word writes | Select only if byte-enable functionality is unused and SOJ-44 mechanical compatibility is primary requirement |
Compared with CY62167EV30LL-45ZSXI and AS6C4008-12BIN, the IDT71V416VS12BEI uniquely delivers 12 ns timing *with* dual byte enables and JEDEC-optimized SOJ pinout - making it the only option supporting both high-speed deterministic access and flexible 8-bit updates in industrial bus designs.
Availability
IDT71V416VS12BEI is available at Aetrix Electronics and suitable for industrial automation, legacy bus interface, and motor control applications requiring stable component supply, long-lifecycle support, and guaranteed industrial temperature performance.
Supply support for IDT71V416VS12BEI 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 power management ICs for communications and industrial markets.
The IDT71V416VS12BEI belongs to IDT's legacy high-speed CMOS SRAM product line, designed specifically for deterministic, low-latency memory expansion in industrial control, test equipment, and embedded computing systems.
FAQ
What is the operating temperature range of the IDT71V416VS12BEI?
The IDT71V416VS12BEI is rated for industrial temperature operation from –40°C to +85°C. This specification is confirmed in the "Recommended Operating Temperature and Supply Voltage" table (Table 05) and applies to all AC and DC parameters in the datasheet. The 'I' suffix in the part number explicitly denotes industrial grade, and thermal validation includes full characterization of tAA, tRC, and ISB across this range.
Does the IDT71V416VS12BEI require a refresh circuit or clock signal?
No, the IDT71V416VS12BEI is a fully static asynchronous SRAM and requires neither a clock nor periodic refresh. Its internal circuitry uses static latches for data retention, and operation is controlled solely by address, CS, WE, OE, and byte enable signals. This is explicitly stated in the Description section: "Fully static asynchronous circuitry is used, requiring no clocks or refresh for operation."
What package type does the IDT71V416VS12BEI use, and is it lead-free?
The IDT71V416VS12BEI uses a 44-pin, 400-mil plastic SOJ (SO44-1) package. Per the Ordering Information diagram (Figure 11a), the 'BE' suffix indicates the SOJ-44 variant. The 'G' suffix would denote RoHS compliance, but IDT71V416VS12BEI lacks that suffix; therefore, it is not RoHS-compliant and contains lead per J-STD-609 Class 1 definition.
Can the IDT71V416VS12BEI be used with 5V logic systems?
No, the IDT71V416VS12BEI is strictly a 3.3V LVTTL device. Its absolute maximum VDD is +4.6V, but recommended operating VDD is 3.0–3.6V (Table 06), and VIH min is 2.0V - incompatible with 5V TTL logic thresholds. Interfacing to 5V systems requires level translation, as confirmed by the "LVTTL-compatible" designation and absence of 5V-tolerant I/O specifications.
How does the byte enable functionality work on the IDT71V416VS12BEI?
The IDT71V416VS12BEI uses separate BHE (high byte enable, I/O8–I/O15) and BLE (low byte enable, I/O0–I/O7) inputs to control 8-bit write operations. When only BHE is low and BLE is high, only the upper byte is written; when only BLE is low, only the lower byte is written. This is verified in the Truth Table (Table 03) and functional block diagram, enabling true partial-word writes without read-modify-write cycles.
IDT71V416VS12BEI 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-CABGA (9x9)
IDT71V416VS12BEI FAQ
1.How can I place an order for IDT71V416VS12BEI through Aetrix?
Please submit a Request for Quotation (RFQ) for IDT71V416VS12BEI 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 IDT71V416VS12BEI reliable?
The price and inventory of IDT71V416VS12BEI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IDT71V416VS12BEI is usually 5 days.
3.What payment methods are accepted for IDT71V416VS12BEI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IDT71V416VS12BEI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IDT71V416VS12BEI?
IDT71V416VS12BEI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IDT71V416VS12BEI 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 IDT71V416VS12BEI?
For technical support, including IDT71V416VS12BEI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IDT71V416VS12BEI requirements.
6.How does Aetrix verify that IDT71V416VS12BEI is sourced from the original manufacturer or authorized distributors?
All IDT71V416VS12BEI 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 IDT71V416VS12BEI meets industry standards.
7.What is the process for return or replacement of IDT71V416VS12BEI?
All IDT71V416VS12BEI units undergo pre-shipment inspection (PSI). If there is an issue with IDT71V416VS12BEI, 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 IDT71V416VS12BEI part is unused and in its original packaging.
Return procedure for IDT71V416VS12BEI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
IDT71V416VS12BEI Tags
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