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Renesas IDT71124S15YI
- Part No.:
- IDT71124S15YI
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 32-BSOJ (0.400", 10.16mm Width)
- Datasheet:
-
IDT71124S15YI.pdf
- Description:
- IC SRAM 1MBIT PARALLEL 32SOJ
- Quantity:
- Payment:
- Shipping:
Inventory:1,962
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Product details
Overview
IDT71124S15YI from Renesas Electronics is a 128K × 8 (1 Mbit) high-speed CMOS static RAM with JEDEC center-power/ground pinout, 15 ns access time, industrial temperature range (–40°C to +85°C), and TTL-compatible bidirectional I/O-used in real-time control buffers, legacy industrial PLCs, and embedded instrumentation memory subsystems.
For engineers reviewing the IDT71124S15YI datasheet, IDT71124S15YI pinout, IDT71124S15YI application, or IDT71124S15YI equivalent, key selection criteria include guaranteed 15 ns read cycle time at industrial temperature, SOJ-32 package compatibility, low standby current (10 mA ISB1), and dual chip select/output enable control for asynchronous memory interfacing.
Technical Context
The IDT71124S15YI implements fully static asynchronous operation-no clocks or refresh required-and uses high-reliability CMOS fabrication optimized for deterministic timing across –40°C to +85°C. Its architecture integrates address decoding, I/O control, and TTL-level input/output drivers on a single die.
JEDEC-compliant center-power/ground pinout reduces simultaneous switching noise; the device supports both CS-controlled and WE-controlled write cycles, with tCLZ ≤ 3 ns and tOHZ ≤ 5 ns under AC test load conditions.
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 at VCC = 4.5–5.5 V, TA = –40°C to +85°C |
| Read Cycle Time (tRC) | 15 ns max-defines minimum interval between successive reads |
| Standby Current (ISB1) | 10 mA max at CMOS-level chip deselect (CS > VHC)-enables ultra-low-power hold mode |
| Supply Voltage | 4.5 V to 5.5 V-compatible with legacy 5 V TTL logic rails |
| I/O Compatibility | TTL-input thresholds (VIH ≥ 2.2 V, VIL ≤ 0.8 V) and output drive (VOH ≥ 2.4 V @ –4 mA, VOL ≤ 0.4 V @ 8 mA) |
| Operating Temperature | –40°C to +85°C-qualified for industrial control and avionics support systems |
Pinout & Package
Package: 32-pin 400-mil Plastic SOJ (Renesas package code PBG32), surface-mount, gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus supporting full 128K-word decode |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit TTL-compatible data path; high-impedance when OE = H or CS = H |
| CS | Chip Select | Active-low enable; controls power-down (ISB1) when driven above VHC |
| OE | Output Enable | Active-low; enables outputs independently of CS-supports multiplexed bus sharing |
| WE | Write Enable | Active-low; initiates write cycle when CS = L; disables outputs during write (tWHZ ≤ 5 ns) |
| VCC | Power Supply | Two pins (pins 24 & 11)-centered per JEDEC pinout to minimize IR drop and noise coupling |
| GND | Ground | Two pins (pins 12 & 25)-symmetrically placed opposite VCC for balanced return path |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC center-power/ground pinout | Reduces simultaneous switching noise by 30–40% vs. conventional SOJ layouts-critical for mixed-signal industrial backplanes |
| Asynchronous static operation | Eliminates need for clock distribution or refresh circuitry-simplifies FPGA/CPU memory interface design |
| Dual control enable (CS + OE) | Enables independent output gating without deselection-supports shared-bus arbitration in multi-master systems |
| CMOS-level standby (ISB1) | 10 mA max current at VCC = 5.5 V and CS > VHC-extends hold time in battery-backed applications |
| Industrial-grade AC timing | All AC parameters (tRC, tAA, tOE, tWHZ) fully specified and tested over –40°C to +85°C-not derated |
Applications
| Industrial PLC Data Buffers | Avionics Sensor Loggers |
|---|---|
Use Scenario: Real-time acquisition of analog sensor inputs in programmable logic controllers with deterministic scan-cycle timing. IC Role / Device Role / Timing Role: High-speed scratchpad memory holding intermediate process values between scan cycles. Use Value: 15 ns tAA ensures data availability within tight 50 µs I/O update windows; ISB1 < 10 mA enables safe retention during brown-out events. | Use Scenario: Buffered storage of inertial measurement unit (IMU) samples during transient power loss in flight control units. IC Role / Device Role / Timing Role: Non-refreshing volatile buffer preserving last-valid sensor frame until power recovery. Use Value: Fully static operation eliminates refresh-induced jitter; –40°C to +85°C qualification matches aircraft environmental envelopes. |
| Legacy Medical Imaging Controllers | Ruggedized Test Equipment Memory |
Use Scenario: Frame buffering in ultrasound front-end processors using aging 5 V microcontrollers with no DRAM controller. IC Role / Device Role / Timing Role: Parallel byte-access memory mapped directly to CPU address space via simple glue logic. Use Value: TTL-compatible I/O eliminates level-shifter components; 32-pin SOJ footprint fits legacy PCB layouts. | Use Scenario: Configuration and calibration data storage in portable oscilloscopes and signal analyzers deployed in factory floors. IC Role / Device Role / Timing Role: Fast-access nonvolatile shadow RAM holding instrument setup tables and firmware patches. Use Value: Centered VCC/GND pins suppress EMI in high-noise test environments; tCHZ ≤ 7 ns prevents bus contention during state transitions. |
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 |
|---|---|---|---|
| CY62128ELL-15ZXI | 128K × 8, 15 ns, 32-pin TSOP-II (not SOJ); VCC = 4.5–5.5 V; ISB = 25 µA typical | Lower standby current but incompatible SOJ footprint-requires PCB redesign | Select only if board layout allows TSOP-II replacement and µA-level ISB is critical |
| AS6C1008-15TIN | 128K × 8, 15 ns, 32-pin SOJ; VCC = 2.7–3.6 V only; not 5 V tolerant | Requires full voltage rail change-cannot interoperate with 5 V TTL buses | Not suitable for direct replacement; consider only in new 3.3 V designs with level-shifting constraints |
Compared with CY62128ELL-15ZXI and AS6C1008-15TIN, the IDT71124S15YI uniquely retains 5 V TTL compatibility, SOJ-32 mechanical fit, and industrial-temperature AC timing-all without requiring PCB or voltage-rail changes.
Availability
IDT71124S15YI is available at Aetrix Electronics and suitable for industrial PLCs, avionics loggers, and legacy medical imaging controllers requiring stable component supply, long-lifecycle support, and verified industrial-temperature performance.
Supply support for IDT71124S15YI 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 trusted embedded solutions for automotive, industrial, infrastructure, and IoT applications.
The IDT71124S15YI belongs to Renesas' legacy high-speed parallel SRAM product line-designed specifically for deterministic, low-latency memory interfacing in 5 V industrial control and instrumentation systems.
FAQ
What is the maximum operating temperature range for the IDT71124S15YI?
The IDT71124S15YI is rated for industrial temperature operation from –40°C to +85°C. This range is fully validated across all AC and DC electrical specifications-including 15 ns access time, 10 mA ISB1, and TTL-compatible I/O thresholds-making it suitable for deployment in harsh environments such as factory automation and outdoor telemetry systems. The "I" suffix in IDT71124S15YI explicitly denotes this industrial qualification.
Does the IDT71124S15YI require a clock or refresh signal to retain data?
No, the IDT71124S15YI is a fully static RAM and requires neither a clock nor periodic refresh. Data retention is maintained as long as VCC remains within 4.5 V to 5.5 V and the device is not deselected beyond its specified ISB1 leakage limits. This eliminates timing-critical refresh overhead in microcontroller-based systems and simplifies integration with FPGAs lacking dedicated DRAM controllers. The IDT71124S15YI operates purely on address, CS, OE, and WE assertion.
What package type does the IDT71124S15YI use, and is it lead-free?
The IDT71124S15YI uses a 32-pin 400-mil Plastic SOJ (Renesas package code PBG32). Per Renesas ordering information, the "Y" suffix indicates RoHS-compliant, lead-free construction. The package features center-placed VCC and GND pins per JEDEC standard to reduce noise-critical for stable operation in electrically noisy industrial settings where the IDT71124S15YI is commonly deployed.
Can the IDT71124S15YI be used with a 3.3 V microcontroller interface?
No-the IDT71124S15YI is strictly a 5 V device with TTL-compatible input thresholds (VIH ≥ 2.2 V, VIL ≤ 0.8 V) and 4.5–5.5 V supply requirement. Direct connection to 3.3 V logic risks violating VIH min and may cause unreliable reads/writes. If interfacing with 3.3 V systems, level translation (e.g., TXB0108 or discrete MOSFET translators) is mandatory. The IDT71124S15YI was designed for legacy 5 V architectures, not mixed-voltage domains.
What is the significance of the "S15" in IDT71124S15YI?
The "S15" in IDT71124S15YI denotes the speed grade: 15 ns access time (tAA) and read cycle time (tRC). This is confirmed in Renesas' AC Electrical Characteristics table, where IDT71124S15YI guarantees tAA ≤ 15 ns and tRC ≤ 15 ns across the full industrial temperature range. It distinguishes the part from slower S20 (20 ns) and faster-but commercially limited-S12 (12 ns) variants. No industrial-grade S12 variant exists for the IDT71124S15YI family.
IDT71124S15YI 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-SOJ
IDT71124S15YI FAQ
1.How can I place an order for IDT71124S15YI through Aetrix?
Please submit a Request for Quotation (RFQ) for IDT71124S15YI 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 IDT71124S15YI reliable?
The price and inventory of IDT71124S15YI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IDT71124S15YI is usually 5 days.
3.What payment methods are accepted for IDT71124S15YI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IDT71124S15YI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IDT71124S15YI?
IDT71124S15YI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IDT71124S15YI 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 IDT71124S15YI?
For technical support, including IDT71124S15YI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IDT71124S15YI requirements.
6.How does Aetrix verify that IDT71124S15YI is sourced from the original manufacturer or authorized distributors?
All IDT71124S15YI 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 IDT71124S15YI meets industry standards.
7.What is the process for return or replacement of IDT71124S15YI?
All IDT71124S15YI units undergo pre-shipment inspection (PSI). If there is an issue with IDT71124S15YI, 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 IDT71124S15YI part is unused and in its original packaging.
Return procedure for IDT71124S15YI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
IDT71124S15YI 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
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24AA02UIDT-I/OT
Microchip Technology
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AT24C08C-STUM-T
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