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Renesas IDT71016S15Y
- Part No.:
- IDT71016S15Y
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 44-BSOJ (0.400", 10.16mm Width)
- Datasheet:
-
IDT71016S15Y.pdf
- Description:
- IC SRAM 1MBIT PARALLEL 44SOJ
- Quantity:
- Payment:
- Shipping:
Inventory:1,181
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Product details
Overview
IDT71016S15Y 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 embedded controllers, industrial PLCs, and legacy communication protocol buffers.
For engineers reviewing the IDT71016S15Y datasheet, IDT71016S15Y pinout, IDT71016S15Y application, or IDT71016S15Y equivalent, key selection considerations include its 44-pin SOJ/TSOP package, 15 ns read cycle time, low-power standby current (50 mA max), byte-select capability, and compatibility with asynchronous microprocessor buses requiring no clock or refresh.
Technical Context
The IDT71016S15Y implements fully static asynchronous circuitry with no clocks or refresh cycles required. Its architecture supports independent high- and low-byte enables (BHE/BLE), enabling partial-word writes without external logic.
It features TTL-compatible bidirectional I/O (VOH ≥ 2.4 V at –4 mA, VOL ≤ 0.4 V at 8 mA), 5 V ±10% supply operation, and three selectable standby modes - including CMOS-level chip deselect (ISB1 = 10 µA) - making it suitable for power-sensitive industrial systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 64K × 16-bit (1,048,576 bits); supports full 16-bit parallel data transfers or independent 8-bit byte operations |
| Access Time (tAA) | 15 ns max (commercial/industrial range); ensures compatibility with 66 MHz CPU bus timing margins |
| Supply Voltage | 5.0 V ±10%; operates reliably across industrial temperature range (–40°C to +85°C) |
| Standby Current (ISB1) | 10 µA max (CMOS-level CS inactive); enables ultra-low-power hold mode in battery-backed systems |
| I/O Interface | TTL-compatible inputs/outputs; eliminates level-shifter requirements on legacy 5 V microprocessor buses |
| Package | 44-pin Plastic SOJ (SO44-1) or TSOP Type II (SO44-2); JEDEC-standard footprint for board-level interchangeability |
| Byte Enable | Dedicated BHE and BLE pins; allows selective write to upper or lower byte without data bus contention |
Pinout & Package
Package: 44-pin Plastic SOJ (SO44-1) or 44-pin TSOP Type II (SO44-2), JEDEC-compliant, 400-mil body width.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A15 | Address Inputs | 16-bit address bus interface; selects one of 64K memory locations |
| CS | Chip Select | Active-low global enable; places device in active or high-Z standby based on logic level |
| OE | Output Enable | Active-low control for output drivers; enables read data only when CS and OE are low |
| WE | Write Enable | Active-low signal initiating write cycle; latches data on I/O pins when CS and BHE/BLE are asserted |
| BHE / BLE | High/Low Byte Enable | Independent 8-bit write controls; permits byte-granular writes without external gating logic |
| I/O0–I/O7 / I/O8–I/O15 | Bidirectional Data I/O | 16-bit TTL-compatible data bus; direction controlled by WE and CS state |
| VCC / VSS | Power / Ground | Single 5 V supply; decoupling required per JEDEC SOJ/TSOP layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Asynchronous Static Operation | No clocks or refresh needed - simplifies system timing design and eliminates DRAM controller overhead |
| Dual Byte Write Enable (BHE/BLE) | Enables independent 8-bit writes to upper or lower half of 16-bit word - reduces bus arbitration complexity |
| Three Standby Power Modes | Supports TTL-level (60 mA), CMOS-level (10 µA), and dynamic low-power states - adaptable to varying sleep requirements |
| 15 ns Access with 5 V Supply | Meets timing constraints of 66 MHz Z80, 80C188, and early ARM7-based controllers without wait states |
| TTL-Compatible I/O | Direct interface to legacy 5 V microprocessors and peripherals - no level translation required |
Applications
| Industrial PLC Data Buffers | Legacy Communication Protocol Adapters |
|---|---|
|
Use Scenario: Storing real-time I/O scan data and command queues in programmable logic controllers operating in harsh environments. IC Role / Device Role / Timing Role: Asynchronous SRAM buffer between CPU and fieldbus interface ASICs, providing deterministic 15 ns read/write latency. Use Value: Enables deterministic scan-cycle execution under –40°C to +85°C conditions with no refresh overhead or timing jitter. |
Use Scenario: Supporting HDLC, SDLC, or X.25 frame assembly/disassembly in telecom line cards with legacy 5 V bus architecture. IC Role / Device Role / Timing Role: Dual-port-capable SRAM acting as frame buffer and descriptor table storage for UART/DMA co-processors. Use Value: Byte-enable functionality allows efficient header/payload separation without external multiplexing logic. |
| Embedded Controller Boot Memory | Test Equipment Pattern Generators |
|
Use Scenario: Holding boot code and runtime variables for 8/16-bit microcontrollers during cold start and firmware update sequences. IC Role / Device Role / Timing Role: Non-volatile boot shadow RAM mapped into CPU address space via fixed decode logic. Use Value: 5 V TTL compatibility ensures reliable initialization with minimal support components on cost-sensitive boards. |
Use Scenario: Storing stimulus and expected response vectors in automated test equipment requiring precise timing alignment. IC Role / Device Role / Timing Role: High-speed pattern memory synchronized to test clock via address counter and WE-controlled write strobes. Use Value: 15 ns tRC supports >66 MHz pattern rates while maintaining deterministic setup/hold margins. |
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 |
|---|---|---|---|
| Cypress CY7C1019DV33-15ZXC | 3.3 V supply, 15 ns access, 48-pin TSOP; not pin-compatible with IDT71016S15Y | Requires level-shifting for 5 V systems; suited for newer low-voltage designs | Select only if migrating to 3.3 V infrastructure and redesigning power delivery and I/O interfaces |
| ISSI IS61LV25616AL-15TQLI | 3.3 V core, 5 V tolerant I/O, 15 ns access, 44-pin TSOP; pinout differs in address pin order and BHE/BLE placement | Compatible with mixed-voltage systems but requires PCB layout revision for pin mapping | Consider for new designs needing extended lifecycle support and RoHS compliance; not drop-in replaceable |
Compared with IDT71016S15Y, both alternatives operate at 3.3 V and require voltage translation or board redesign for 5 V legacy integration - whereas IDT71016S15Y delivers native 5 V TTL compatibility, byte-enable flexibility, and proven reliability in long-lifecycle industrial deployments.
Availability
IDT71016S15Y is available at Aetrix Electronics and suitable for industrial PLC data buffering, legacy communication protocol adapters, and embedded controller boot memory requiring stable component supply across extended product lifecycles.
Supply support for IDT71016S15Y 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.
The IDT71016 family was designed for high-reliability, fully static memory applications in industrial and communications equipment where zero-refresh operation and 5 V bus compatibility were critical system requirements.
FAQ
What is the operating temperature range for the IDT71016S15Y?
The IDT71016S15Y 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 4) and applies to all AC/DC electrical parameters listed for the S15 speed grade. The Y suffix explicitly denotes industrial temperature qualification per IDT's ordering nomenclature.
Does the IDT71016S15Y require a clock or refresh signal?
No, the IDT71016S15Y uses fully static CMOS circuitry and requires no clock, refresh, or periodic access to retain data. This is stated in the Description section: "Fully static asynchronous circuitry is used, requiring no clocks or refresh for operation." Its operation depends solely on address, control, and data signals - ideal for deterministic real-time systems.
What does the 'Y' suffix mean in IDT71016S15Y?
The 'Y' suffix in IDT71016S15Y indicates industrial temperature range (–40°C to +85°C) qualification. Per the Ordering Information diagram (Figure 11), 'Y' maps to industrial grade, while blank denotes commercial grade (0°C to +70°C). This suffix is part of IDT's standardized nomenclature and confirms thermal rating without requiring external validation.
Can the IDT71016S15Y be used with a 3.3 V microprocessor bus?
No - the IDT71016S15Y is specified for 5 V ±10% operation only and has TTL-compatible I/O thresholds (VIL ≤ 0.8 V, VIH ≥ 2.2 V). Driving it from a 3.3 V bus risks violating input high-level voltage minimums; likewise, its 5 V outputs may damage 3.3 V receivers. Level translation is mandatory for interoperability.
How does byte enable (BHE/BLE) function during a write cycle on the IDT71016S15Y?
During a write, asserting BHE low enables writes to I/O8–I/O15 (high byte), asserting BLE low enables writes to I/O0–I/O7 (low byte), and asserting both enables full 16-bit writes. This is defined in the Truth Table (Table 2): "L X L L H → DATAIN on I/O0–I/O7" and "L X L H L → DATAIN on I/O8–I/O15". No external logic is needed to gate byte lanes.
IDT71016S15Y 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 44-SOJ
IDT71016S15Y FAQ
1.How can I place an order for IDT71016S15Y through Aetrix?
Please submit a Request for Quotation (RFQ) for IDT71016S15Y 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 IDT71016S15Y reliable?
The price and inventory of IDT71016S15Y are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IDT71016S15Y is usually 5 days.
3.What payment methods are accepted for IDT71016S15Y?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IDT71016S15Y transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IDT71016S15Y?
IDT71016S15Y orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IDT71016S15Y 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 IDT71016S15Y?
For technical support, including IDT71016S15Y datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IDT71016S15Y requirements.
6.How does Aetrix verify that IDT71016S15Y is sourced from the original manufacturer or authorized distributors?
All IDT71016S15Y 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 IDT71016S15Y meets industry standards.
7.What is the process for return or replacement of IDT71016S15Y?
All IDT71016S15Y units undergo pre-shipment inspection (PSI). If there is an issue with IDT71016S15Y, 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 IDT71016S15Y part is unused and in its original packaging.
Return procedure for IDT71016S15Y:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
IDT71016S15Y Tags
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M24C02-WMN6TP
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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