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Renesas IDT71024S15Y
- Part No.:
- IDT71024S15Y
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 32-BSOJ (0.400", 10.16mm Width)
- Datasheet:
-
IDT71024S15Y.pdf
- Description:
- IC SRAM 1MBIT PARALLEL 32SOJ
- Quantity:
- Payment:
- Shipping:
Inventory:3,478
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Product details
Overview
IDT71024S15Y from Renesas Electronics is a 128K × 8-bit (1 Mbit) high-speed CMOS static RAM with 15 ns access time, industrial temperature range (–40°C to +85°C), single 5V supply operation, and TTL-compatible bidirectional I/O. It serves as main or cache memory in embedded controllers, industrial PLCs, and legacy communication equipment requiring deterministic, no-refresh asynchronous operation.
For engineers reviewing the IDT71024S15Y datasheet, IDT71024S15Y pinout, IDT71024S15Y application, or IDT71024S15Y equivalent, key selection criteria include guaranteed 15 ns read cycle time, dual chip select architecture with independent OE control, low 10 mA full-standby current, and SOJ-32 package compatibility across commercial and industrial grades.
Technical Context
The IDT71024S15Y implements fully static asynchronous logic with no clocks or refresh cycles required. Its address-access path supports tAA ≤ 15 ns and tACS ≤ 15 ns under industrial conditions, while output enable latency is specified at tOE ≤ 7 ns - enabling tight timing closure in bus-coupled microprocessor systems.
It features two independent chip selects (CS1, CS2) and one dedicated output enable (OE), allowing hierarchical memory banking and selective output gating. All inputs and I/Os meet TTL voltage thresholds (VIH ≥ 2.2 V, VIL ≤ 0.8 V) and drive ±4 mA/±8 mA loads, ensuring direct interfacing with legacy 5V logic families without level translation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 128K × 8-bit (1,048,576 bits); supports byte-wide data bus interface without multiplexing |
| Access Time (tAA) | ≤15 ns at VCC = 4.5–5.5 V, –40°C to +85°C; ensures compatibility with 66 MHz CPU bus timing |
| Read Cycle Time (tRC) | 15 ns; defines minimum consecutive read interval for burst or sequential access patterns |
| Standby Current (ISB1) | 10 mA max at VCC = max, CMOS-level deselect (CS1 ≥ VHC or CS2 ≤ VLC); enables low-power sleep modes |
| Supply Voltage | 5.0 V ± 10% (4.5–5.5 V); compatible with standard 5V system rails and legacy power domains |
| I/O Interface | TTL-compatible inputs and bidirectional outputs; eliminates need for external bus transceivers or level shifters |
| Operating Temperature | –40°C to +85°C industrial grade; validated for use in factory automation, motor drives, and outdoor telecom nodes |
Pinout & Package
Package: 32-pin Plastic SOJ (Small Outline J-Lead), available in both 300-mil (PJG32) and 400-mil (PBG32) body widths. Pin pitch is 0.050 inch (1.27 mm). Lead finish is lead-free (Green) per RoHS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus supporting full 128K-word decoding; A16 is MSB for 1M-bit capacity |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit parallel data path; direction controlled by WE and CS states; TTL-compatible drive strength |
| CS1, CS2 | Chip Select Inputs | Active-low dual-select architecture enables memory bank partitioning and hierarchical decode logic |
| OE | Output Enable | Separate control for output drivers; allows data bus sharing without affecting chip selection state |
| WE | Write Enable | Active-low write strobe; initiates write cycle when CS1 low, CS2 high, and WE low simultaneously |
| VCC, GND | Power Supply | Single 5V supply with dedicated ground; decoupling required per high-speed SRAM layout guidelines |
| NC | No Connect | Pin 1 is NC; must be left unconnected - not tied to VCC, GND, or any signal |
Key Features
| Feature | Design Value |
|---|---|
| Asynchronous Static Operation | No clocks, no refresh cycles required - simplifies system timing design and reduces controller overhead |
| Dual Chip Select Architecture | CS1 and CS2 allow independent enable/disable of memory banks or interleaved addressing schemes |
| Fast Output Enable (tOE ≤ 7 ns) | Enables rapid data sampling in shared-bus systems where multiple devices contend for the same data lines |
| Low Full-Standby Current (ISB1 = 10 mA) | Supports energy-efficient idle states in battery-backed or thermally constrained industrial modules |
| TTL-Compatible I/O | Direct interface with 5V microcontrollers, FPGAs, and ASICs without external level-shifting circuitry |
Applications
| Industrial PLC Memory Buffer | Legacy Telecom Line Card Cache |
|---|---|
|
Use Scenario: Storing real-time I/O status and configuration registers in programmable logic controllers operating in harsh factory environments. IC Role / Device Role / Timing Role: Asynchronous byte-wide SRAM providing deterministic read/write latency for scan-cycle execution without wait states. Use Value: 15 ns access time and –40°C to +85°C rating ensure reliable operation during extended thermal cycling and EMI exposure. |
Use Scenario: Acting as packet buffer and register shadow memory on T1/E1 line interface cards in central office switching systems. IC Role / Device Role / Timing Role: High-reliability static RAM serving as non-refreshed scratchpad for protocol engine firmware and frame header storage. Use Value: Dual CS pins enable seamless integration into multi-chip memory maps alongside EPROM and FIFO devices on shared buses. |
| Medical Imaging Control Module | Avionics Display Processor Buffer |
|
Use Scenario: Holding calibration tables and real-time sensor fusion parameters in portable ultrasound or X-ray control units. IC Role / Device Role / Timing Role: Low-power standby mode (ISB1 = 10 mA) extends battery life during idle periods between imaging sessions. Use Value: TTL-compatible I/O eliminates level translators, reducing BOM count and board space in compact, safety-certified enclosures. |
Use Scenario: Providing display list and glyph cache memory for ruggedized cockpit display processors in certified aircraft systems. IC Role / Device Role / Timing Role: Deterministic 15 ns access supports fixed-priority interrupt servicing and deterministic rendering pipelines. Use Value: SOJ-32 package offers proven reliability under vibration and thermal shock, meeting DO-254/DO-160 requirements. |
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 |
|---|---|---|---|
| CY62128EV30LL-45ZAXI | 128K × 8, 45 ns access, 3.3 V only, TSOP-32 package | Requires voltage translation in 5V systems; slower timing limits use in high-clock-rate controllers | Select only if migrating to 3.3V architecture and relaxing timing constraints |
| AS6C1008-15PCN | 128K × 8, 15 ns access, 5V supply, SOP-32 package (not SOJ) | Different pinout and package footprint; requires PCB redesign despite identical timing and voltage | Choose only when SOJ-to-SOP conversion is acceptable and thermal profile permits SOP mounting |
Compared with CY62128EV30LL-45ZAXI and AS6C1008-15PCN, the IDT71024S15Y uniquely delivers 15 ns performance in a drop-in SOJ-32 industrial-grade 5V package with dual CS and dedicated OE - making it irreplaceable in legacy 5V bus designs requiring zero-layout change upgrades.
Availability
IDT71024S15Y is available at Aetrix Electronics and suitable for industrial PLCs, legacy telecom infrastructure, medical imaging subsystems, avionics display buffers, and factory automation controllers requiring stable component supply across long product lifecycles.
Supply support for IDT71024S15Y 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
Renesas Electronics Corporation is a global semiconductor leader delivering microcontrollers, analog, power, and memory solutions for automotive, industrial, and enterprise applications.
The IDT71024S15Y belongs to Renesas' legacy high-speed CMOS SRAM product line, designed specifically for deterministic, no-refresh memory expansion in 5V embedded systems where timing predictability and industrial reliability are critical.
FAQ
What is the maximum guaranteed access time for IDT71024S15Y across its full industrial temperature range?
The IDT71024S15Y guarantees tAA ≤ 15 ns and tRC = 15 ns over –40°C to +85°C at VCC = 4.5–5.5 V. This specification is production-tested per datasheet Table 9, ensuring consistent timing behavior without derating in demanding thermal environments where the IDT71024S15Y is deployed.
Does IDT71024S15Y require external refresh circuitry or clock signals?
No - the IDT71024S15Y uses fully static CMOS architecture and requires no clocks, refresh cycles, or periodic access to retain data. This eliminates timing-critical refresh overhead in microcontroller-based systems and makes the IDT71024S15Y ideal for deterministic real-time applications.
Can IDT71024S15Y operate with mixed 3.3V and 5V logic interfaces?
No - the IDT71024S15Y is strictly a 5V device (VCC = 4.5–5.5 V) with TTL-compatible input thresholds (VIH ≥ 2.2 V, VIL ≤ 0.8 V). Direct connection to 3.3V logic requires level translation; the IDT71024S15Y does not support dual-supply or mixed-voltage operation.
What is the function of the NC pin on IDT71024S15Y, and how should it be handled on the PCB?
Pin 1 of the IDT71024S15Y is designated NC (No Connect) and must remain unconnected - neither tied to VCC, GND, nor any signal net. Leaving it floating is acceptable; soldering or routing to any node violates the IDT71024S15Y's validated electrical design and may cause undefined behavior.
How does the dual chip select (CS1/CS2) architecture of IDT71024S15Y improve memory system design?
The dual CS inputs enable hierarchical memory decoding: CS1 can serve as primary bank select while CS2 acts as secondary qualifier, allowing flexible address mapping without additional logic gates. This reduces gate count and propagation delay in systems using the IDT71024S15Y alongside other memory or peripheral devices on the same bus.
IDT71024S15Y Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 32-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:
- 128K x 8
- 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:
- 32-SOJ
IDT71024S15Y FAQ
1.How can I place an order for IDT71024S15Y through Aetrix?
Please submit a Request for Quotation (RFQ) for IDT71024S15Y 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 IDT71024S15Y reliable?
The price and inventory of IDT71024S15Y are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IDT71024S15Y is usually 5 days.
3.What payment methods are accepted for IDT71024S15Y?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IDT71024S15Y transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IDT71024S15Y?
IDT71024S15Y orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IDT71024S15Y 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 IDT71024S15Y?
For technical support, including IDT71024S15Y datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IDT71024S15Y requirements.
6.How does Aetrix verify that IDT71024S15Y is sourced from the original manufacturer or authorized distributors?
All IDT71024S15Y 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 IDT71024S15Y meets industry standards.
7.What is the process for return or replacement of IDT71024S15Y?
All IDT71024S15Y units undergo pre-shipment inspection (PSI). If there is an issue with IDT71024S15Y, 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 IDT71024S15Y part is unused and in its original packaging.
Return procedure for IDT71024S15Y:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
IDT71024S15Y Tags
-
M24C02-WMN6TP
STMicroelectronics
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AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
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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
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24LC01BT-I/SN
Microchip Technology
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24AA02UIDT-I/OT
Microchip Technology
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AT24C08C-STUM-T
Microchip Technology
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