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Renesas IDT71016S15YI
- Part No.:
- IDT71016S15YI
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 44-BSOJ (0.400", 10.16mm Width)
- Datasheet:
-
IDT71016S15YI.pdf
- Description:
- IC SRAM 1MBIT PARALLEL 44SOJ
- Quantity:
- Payment:
- Shipping:
Inventory:1,163
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Product details
Overview
IDT71016S15YI from Integrated Device Technology is a 64K × 16-bit (1 Mbit) high-speed CMOS static RAM with 15 ns access time, 5 V single-supply operation, TTL-compatible I/O, and dual byte enable (BHE/BLE) for flexible 8-bit or 16-bit data bus interfacing - used in legacy industrial controllers and embedded memory subsystems requiring deterministic asynchronous timing.
For engineers reviewing the IDT71016S15YI datasheet, IDT71016S15YI pinout, IDT71016S15YI application, or IDT71016S15YI equivalent, key selection criteria include its 15 ns read cycle time, SOJ-44 package compatibility, industrial temperature range (–40°C to +85°C), and support for byte-selectable writes without external logic.
Technical Context
The IDT71016S15YI implements fully static asynchronous architecture with no clocks or refresh required. Its address decoding uses row/column architecture over A0–A15, and bidirectional I/O drivers support simultaneous high-impedance control via CS, OE, BHE, and BLE.
Timing is governed by three independent control paths: chip-select–driven (tACS), output-enable–driven (tOE), and byte-enable–driven (tBE), each guaranteeing ≤15 ns access under industrial conditions. Standby current drops to 10 mA when CS is deasserted at CMOS levels.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 64K × 16-bit (1,048,576 bits); supports full-word or half-word reads/writes |
| Access Time (tAA) | 15 ns max at VCC = 4.5–5.5 V, TA = –40°C to +85°C - defines minimum address-to-data valid delay |
| Read Cycle Time (tRC) | 15 ns max - sets minimum interval between successive read operations |
| Supply Voltage | 5.0 V ±10% - compatible with legacy 5 V TTL/CMOS system rails without level shifting |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded systems with thermal cycling |
| Standby Current (ISB1) | 10 mA max at CMOS-level chip deselect - enables low-power sleep modes in battery-backed controllers |
| I/O Interface | TTL-compatible inputs and outputs - interfaces directly with 74LS/74ALS logic and microprocessor data buses |
Pinout & Package
Package: 44-pin Plastic SOJ (SO44-1), JEDEC standard, 400-mil width, lead pitch 0.05 inch - suitable for wave-soldered industrial PCBs with manual rework capability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A15 | Address Inputs | 16-bit address bus; fully decoded to select one of 65,536 memory words |
| CS | Chip Select | Active-low global enable; places device in standby (high-Z I/O) when high |
| OE | Output Enable | Active-low control for output drivers; allows read data gating independent of CS |
| WE | Write Enable | Active-low write strobe; initiates write cycle when CS and byte enables are active |
| BHE / BLE | Byte Enable (High/Low) | Independent 8-bit write masking - enables partial-word writes without read-modify-write |
| I/O0–I/O7 / I/O8–I/O15 | Bidirectional Data Bus | Two 8-bit I/O ports; direction controlled by WE and CS state per cycle |
| VCC / VSS | Power / Ground | Single 5 V supply; decoupling required per JEDEC SOJ layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Asynchronous Static Operation | No clock, no refresh - eliminates timing jitter and simplifies controller interface logic |
| Dual Byte Enable (BHE/BLE) | Enables selective 8-bit writes to upper or lower byte without external gate logic |
| 7 ns Output Enable Delay (tOE) | Fast data gating supports tight timing margins in microprocessor wait-state configurations |
| Low Standby Power (10 mA) | Reduces system power budget during idle periods in programmable logic controllers |
| TTL-Compatible I/O Levels | Direct connection to legacy 5 V microcontrollers (e.g., Intel 80C188, Motorola 68EC000) without level translators |
Applications
| Industrial PLC Memory Buffer | Legacy Microcontroller Data RAM |
|---|---|
Use Scenario: Real-time I/O data buffering in modular programmable logic controllers with cyclic scan execution. IC Role / Device Role / Timing Role: Asynchronous SRAM providing deterministic 15 ns read/write latency for ladder logic scan buffers. Use Value: Eliminates wait states on 8/16-bit bus masters and supports concurrent byte writes for status register updates. | Use Scenario: On-board data memory for 1990s-era 16-bit embedded controllers in test equipment and motor drives. IC Role / Device Role / Timing Role: Primary volatile RAM for stack, variables, and temporary buffers in non-pipelined CPU architectures. Use Value: Matches 5 V bus timing without glue logic; BHE/BLE enables efficient C-language structure field access. |
| Communications Protocol Stack Buffer | Medical Device Parameter Storage |
Use Scenario: Packet buffer in serial protocol converters (e.g., Modbus RTU to ASCII gateways) with burst data handling. IC Role / Device Role / Timing Role: High-reliability scratchpad memory for frame assembly/disassembly with byte-aligned access. Use Value: Industrial temp rating ensures stable operation in unventilated enclosures; low ISB1 extends backup battery life. | Use Scenario: Configuration and calibration storage in Class II medical instruments requiring long-term reliability. IC Role / Device Role / Timing Role: Non-refreshed, error-free memory for critical setup parameters retained across power cycles. Use Value: Fully static design prevents data corruption during brownouts; SOJ package resists mechanical stress in portable units. |
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 |
|---|---|---|---|
| CY62167EV30-15ZSXIT | 3.3 V supply only; 15 ns access but requires level translation for 5 V systems | Designed for modern low-voltage embedded systems; not drop-in compatible with 5 V buses | Select only if migrating entire system to 3.3 V and redesigning power/signal integrity |
| AS6C1008-15ZIN | Same 5 V supply and SOJ-44 package; 15 ns access but lacks BHE/BLE - requires external byte-mask logic | Lower cost but increases board complexity and timing uncertainty in byte-write scenarios | Prefer IDT71016S15YI when byte-selectable writes are required without added components |
Compared with CY62167EV30-15ZSXIT and AS6C1008-15ZIN, the IDT71016S15YI uniquely delivers 5 V TTL compatibility, industrial temperature operation, and native byte enable control in a single SOJ-44 package - reducing component count and timing risk in legacy industrial designs.
Availability
IDT71016S15YI is available at Aetrix Electronics and suitable for industrial PLCs, legacy microcontroller-based instrumentation, and medical device parameter storage requiring stable component supply across extended product lifecycles.
Supply support for IDT71016S15YI 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, and interface solutions before its acquisition by Renesas in 2019; known for high-reliability industrial memory and clock products.
The IDT71016S15YI belongs to IDT's legacy high-speed CMOS SRAM product line, designed specifically for deterministic, low-latency memory interfacing in 5 V industrial control and embedded computing systems.
FAQ
What is the operating temperature range specified for the IDT71016S15YI?
The IDT71016S15YI 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 and validated across all AC/DC electrical characteristics in the datasheet. The 'Y' suffix in the part number explicitly denotes industrial grade, distinguishing it from commercial-grade variants like IDT71016S15YI's commercial counterpart IDT71016S15YI.
Does the IDT71016S15YI require a clock signal or refresh circuitry?
No, the IDT71016S15YI uses fully static CMOS architecture and requires neither a clock nor periodic refresh. Its operation is purely asynchronous - data retention is maintained as long as VCC is applied and CS is held high during standby. This eliminates timing overhead and simplifies integration with microcontrollers lacking dedicated DRAM controllers.
What does the 'S15' in IDT71016S15YI indicate?
The 'S15' in IDT71016S15YI specifies a 15 ns maximum access time (tAA) and read cycle time (tRC). This speed grade is validated across both commercial and industrial temperature ranges, with corresponding ICC and ISB values published separately for each grade in Table 8 of the datasheet.
Can the IDT71016S15YI be used with a 3.3 V microprocessor bus?
No - the IDT71016S15YI is strictly a 5 V device (VCC = 4.5–5.5 V) with TTL-compatible input thresholds (VIH ≥ 2.2 V, VIL ≤ 0.8 V). Direct connection to 3.3 V logic violates VIH min and risks unreliable operation; level-shifting circuitry would be required, negating its plug-and-play advantage in 5 V systems.
Is the IDT71016S15YI still recommended for new designs?
No - the February 2001 revision of the datasheet explicitly removed the "Not recommended for new designs" notice present in earlier versions, confirming continued support at time of publication. However, as a mature 2001-era part, it is now considered legacy; Aetrix Electronics supplies it for obsolescence management and repair of installed industrial systems.
IDT71016S15YI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 44-BSOJ (0.400", 10.16mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Asynchronous
- Memory Size:
- 1Mbit
- Memory Organization:
- 64K x 16
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 15ns
- Access Time:
- 15 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 44-SOJ
IDT71016S15YI FAQ
1.How can I place an order for IDT71016S15YI through Aetrix?
Please submit a Request for Quotation (RFQ) for IDT71016S15YI 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 IDT71016S15YI reliable?
The price and inventory of IDT71016S15YI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IDT71016S15YI is usually 5 days.
3.What payment methods are accepted for IDT71016S15YI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IDT71016S15YI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IDT71016S15YI?
IDT71016S15YI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IDT71016S15YI 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 IDT71016S15YI?
For technical support, including IDT71016S15YI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IDT71016S15YI requirements.
6.How does Aetrix verify that IDT71016S15YI is sourced from the original manufacturer or authorized distributors?
All IDT71016S15YI 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 IDT71016S15YI meets industry standards.
7.What is the process for return or replacement of IDT71016S15YI?
All IDT71016S15YI units undergo pre-shipment inspection (PSI). If there is an issue with IDT71016S15YI, 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 IDT71016S15YI part is unused and in its original packaging.
Return procedure for IDT71016S15YI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
IDT71016S15YI Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
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