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Renesas IDT71024S15YI8
- Part No.:
- IDT71024S15YI8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 32-BSOJ (0.400", 10.16mm Width)
- Datasheet:
-
IDT71024S15YI8.pdf
- Description:
- IC SRAM 1MBIT PARALLEL 32SOJ
- Quantity:
- Payment:
- Shipping:
Inventory:3,928
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Product details
Overview
IDT71024S15YI8 from Renesas Electronics is a 128K × 8-bit (1 Mbit) high-speed CMOS static RAM operating at 5 V, with 15 ns access time and industrial temperature range (–40°C to +85°C), packaged in 32-pin 400-mil Plastic SOJ. It features dual chip selects (CS1, CS2), TTL-compatible bidirectional I/O, and output enable (OE) for fast 7 ns read access - used in real-time embedded controllers requiring deterministic memory latency.
For engineers reviewing the IDT71024S15YI8 datasheet, IDT71024S15YI8 pinout, IDT71024S15YI8 application, or IDT71024S15YI8 equivalent, key selection criteria include guaranteed 15 ns tAA/tRC timing across industrial temperature, low 10 µA ISB1 standby current, and SOJ-32 package compatibility with legacy board layouts in avionics data loggers, industrial PLCs, and telecom line cards.
Technical Context
The IDT71024S15YI8 implements fully static asynchronous architecture with no clocks or refresh required. Its dual-chip-select logic enables hierarchical memory decoding, while OE-controlled output gating supports bus sharing without external transceivers.
All inputs and outputs are TTL-compatible (VIH = 2.2 V min, VIL = 0.8 V max), and operation is specified over VCC = 4.5–5.5 V. Standby modes include TTL-level ISB (40 mA) and CMOS-level ISB1 (10 mA), activated via voltage-threshold detection on CS1/CS2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 128K × 8-bit (1,048,576 bits), byte-wide parallel interface |
| Access Time (tAA) | 15 ns max - guarantees deterministic read latency for real-time interrupt service routines |
| Cycle Time (tRC) | 15 ns max - enables maximum 66.7 MHz burst read/write throughput |
| Supply Voltage | 4.5 V to 5.5 V - compatible with standard 5 V logic rails and tolerant of ±10% regulation |
| Operating Temperature | –40°C to +85°C - qualified for industrial control and outdoor base station environments |
| Standby Current (ISB1) | 10 µA max - enables ultra-low-power sleep mode in battery-backed systems |
| I/O Capacitance | CI/O = 8 pF max - limits signal integrity degradation on high-speed address/data buses |
Pinout & Package
Package: 32-pin Plastic SOJ (400-mil body width, PBG32 footprint), surface-mount, gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus supporting full 128K address space; A16 is MSB |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit TTL-compatible data path; direction controlled by WE and CS states |
| CS1, CS2 | Chip Select Inputs | Active-Low (CS1) and Active-High (CS2) enable hierarchical decoding; both required for active mode |
| WE | Write Enable | Active-Low control for write cycles; high during reads; controls I/O driver direction |
| OE | Output Enable | Active-Low control for output drivers; allows bus sharing without external tri-state logic |
| VCC, GND | Power Supply | Single 5 V supply; decoupling required per JEDEC SOJ layout guidelines |
| NC | No Connect | Pin 1 is NC - must be left unconnected; not internally bonded |
Key Features
| Feature | Design Value |
|---|---|
| 15 ns access with industrial temp guarantee | Ensures timing compliance in harsh environments without derating or margining |
| Dual threshold chip select (TTL/CMOS) | Supports both legacy TTL decode logic and low-power CMOS controllers without level shifters |
| 7 ns OE-to-output valid (tOE) | Enables tight timing closure in multiplexed bus architectures with shared address/data lines |
| 10 µA CMOS-level standby (ISB1) | Reduces system quiescent power by >75% vs. TTL-level standby in always-on monitoring nodes |
| SOJ-32 (PBG32) package | Provides proven reliability and reworkability in high-vibration industrial assemblies |
Applications
| Industrial PLC Memory Buffer | Avionics Data Logger |
|---|---|
|
Use Scenario: Stores real-time sensor acquisition buffers and program stack in modular I/O modules. IC Role / Device Role / Timing Role: Byte-wide SRAM providing zero-wait-state access for ARM7-based controller instruction fetch and data caching. Use Value: 15 ns tAA ensures deterministic response to 10 kHz analog input interrupts without pipeline stalls. |
Use Scenario: Captures flight parameter snapshots during transient events in black box recorders. IC Role / Device Role / Timing Role: Non-refresh volatile buffer holding pre-trigger telemetry before flash transfer. Use Value: –40°C to +85°C rating and 10 µA ISB1 enable cold-soak operation and extended battery life between uploads. |
| Telecom Line Card Frame Buffer | Medical Imaging Control Module |
|
Use Scenario: Buffers TDM channel data between framer and DSP in E1/T1 interface cards. IC Role / Device Role / Timing Role: Parallel SRAM interfacing directly to TI C64x+ EMIF with no glue logic. Use Value: Dual CS pins allow banked addressing across multiple IDT71024S15YI8 devices for 2 MB frame storage. |
Use Scenario: Holds calibration lookup tables and real-time motion control coefficients in MRI gantry controllers. IC Role / Device Role / Timing Role: Deterministic-access memory for safety-critical servo loop execution. Use Value: Fully static operation eliminates refresh-induced jitter in sub-microsecond position update cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed parallel SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY62128EV30LL-45ZAXI | 128K × 8, 45 ns speed grade, 3.3 V core, SOJ-32 but different pinout (no NC at Pin 1) | Requires voltage translation and PCB redesign; suited for 3.3 V systems with relaxed timing | Select only if migrating to lower-voltage platform and redesigning layout. |
| AS6C1008-15PIN | 128K × 8, 15 ns, 5 V, SOJ-32, but single CS and no OE pin - uses CS-only output control | Lacks independent OE; requires external bus arbitration in shared-bus designs | Prefer when simplifying decode logic and accepting reduced bus flexibility. |
Compared with CY62128EV30LL-45ZAXI and AS6C1008-15PIN, the IDT71024S15YI8 uniquely delivers 15 ns performance at 5 V with dual CS and dedicated OE - preserving legacy 5 V system timing margins and enabling drop-in replacement in existing SOJ-32 layouts where Pin 1 is NC.
Availability
IDT71024S15YI8 is available at Aetrix Electronics and suitable for industrial PLCs, avionics data loggers, and telecom line cards requiring stable component supply with long-lifecycle support and traceable sourcing.
Supply support for IDT71024S15YI8 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 is a global semiconductor leader delivering microcontrollers, analog, power, and memory solutions for automotive, industrial, and infrastructure markets.
The IDT71024S15YI8 belongs to Renesas' legacy high-speed parallel SRAM product line, designed specifically for deterministic-latency, no-refresh memory in 5 V industrial control and communications equipment.
FAQ
What is the operating voltage range for the IDT71024S15YI8?
The IDT71024S15YI8 operates over a supply voltage range of 4.5 V to 5.5 V, with full AC/DC specifications guaranteed across this window at industrial temperatures. This 5 V ±10% tolerance ensures compatibility with standard linear and switching regulators in legacy industrial systems without additional voltage conditioning circuitry. The IDT71024S15YI8 does not support 3.3 V operation.
Does the IDT71024S15YI8 require refresh circuitry or clock signals?
No, the IDT71024S15YI8 uses fully static CMOS design and requires no clocks, timers, or refresh cycles - all memory cells retain data as long as power is applied. This eliminates timing overhead and jitter in real-time control loops. The IDT71024S15YI8 functions purely asynchronously, responding only to address, CS, WE, and OE transitions.
What is the function of Pin 1 (NC) on the IDT71024S15YI8?
Pin 1 on the IDT71024S15YI8 is designated NC (No Connect) and must remain unconnected on the PCB. It is not internally bonded and has no electrical function. Connecting Pin 1 may cause undefined behavior or damage. This distinguishes the IDT71024S15YI8 from functionally similar SRAMs that use Pin 1 for A17 or other signals.
How does the dual chip select (CS1/CS2) logic work on the IDT71024S15YI8?
The IDT71024S15YI8 requires CS1 LOW *and* CS2 HIGH simultaneously to enter active mode; either signal out of spec places the device in standby. This two-signal scheme prevents partial selection glitches and enables hierarchical decoding with minimal external logic. The IDT71024S15YI8 ignores address changes when CS1 or CS2 is inactive, eliminating bus contention risks.
Is the IDT71024S15YI8 RoHS-compliant and halogen-free?
Yes, the IDT71024S15YI8 is a Green (halogen-free, lead-free) device compliant with RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. The "G" suffix in the part number confirms this compliance, and it is documented in Renesas' ordering information table. Traceability documentation is available upon request for IDT71024S15YI8 shipments.
IDT71024S15YI8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 32-BSOJ (0.400", 10.16mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-SOJ
IDT71024S15YI8 FAQ
1.How can I place an order for IDT71024S15YI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for IDT71024S15YI8 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 IDT71024S15YI8 reliable?
The price and inventory of IDT71024S15YI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IDT71024S15YI8 is usually 5 days.
3.What payment methods are accepted for IDT71024S15YI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IDT71024S15YI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IDT71024S15YI8?
IDT71024S15YI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IDT71024S15YI8 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 IDT71024S15YI8?
For technical support, including IDT71024S15YI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IDT71024S15YI8 requirements.
6.How does Aetrix verify that IDT71024S15YI8 is sourced from the original manufacturer or authorized distributors?
All IDT71024S15YI8 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 IDT71024S15YI8 meets industry standards.
7.What is the process for return or replacement of IDT71024S15YI8?
All IDT71024S15YI8 units undergo pre-shipment inspection (PSI). If there is an issue with IDT71024S15YI8, 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 IDT71024S15YI8 part is unused and in its original packaging.
Return procedure for IDT71024S15YI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
IDT71024S15YI8 Tags
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M24C02-WMN6TP
STMicroelectronics
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AT24C02C-XHM-T
Microchip Technology
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AT21CS01-STUM10-T
Microchip Technology
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AT24C02C-SSHM-T
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24LC01BT-I/OT
Microchip Technology
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M24C02-FMC6TG
STMicroelectronics
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AT24CS02-SSHM-T
Microchip Technology
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93LC46BT-I/OT
Microchip Technology
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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
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