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Renesas IDT71124S12Y8
- Part No.:
- IDT71124S12Y8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 32-BSOJ (0.400", 10.16mm Width)
- Datasheet:
-
IDT71124S12Y8.pdf
- Description:
- IC SRAM 1MBIT PARALLEL 32SOJ
- Quantity:
- Payment:
- Shipping:
Inventory:4,626
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Product details
Overview
IDT71124S12Y8 from Renesas Electronics is a 128K × 8-bit (1 Mbit) high-speed CMOS static RAM with 12 ns access time, JEDEC center-power/GND pinout for noise reduction, TTL-compatible bidirectional I/O, and single 5 V supply operation. It serves as main or cache memory in embedded controllers, industrial PLCs, and legacy communication interface cards requiring deterministic, no-refresh asynchronous operation.
For engineers reviewing the IDT71124S12Y8 datasheet, IDT71124S12Y8 pinout, IDT71124S12Y8 application, or IDT71124S12Y8 equivalent, key selection criteria include its 12 ns commercial-grade read timing, 32-pin 400-mil SOJ package, JEDEC-compliant power/GND placement, low 160 mA dynamic ICC, and full TTL-level compatibility without level-shifting.
Technical Context
The IDT71124S12Y8 implements fully static asynchronous logic with no clocks or refresh cycles required. Its architecture features independent chip select (CS) and output enable (OE) controls, enabling fast read access (tAA = 12 ns) and rapid output disable (tOHZ = 5 ns), while supporting both CS-controlled and WE-controlled write cycles.
It uses high-reliability CMOS fabrication with input/output capacitance limited to 8 pF each, operates across 0°C to +70°C, and guarantees VIH ≥ 2.2 V and VIL ≤ 0.8 V under 5.0 V ±10% supply - ensuring robust interfacing with legacy TTL bus systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 128K × 8-bit (1,048,576 bits), byte-wide parallel interface |
| Access Time (tAA) | 12 ns max - enables sub-83 MHz bus read throughput without wait states |
| Supply Voltage | 4.5 V to 5.5 V - compatible with standard 5 V TTL/CMOS logic rails |
| I/O Compatibility | TTL-input and TTL-output levels - direct connection to 74LS/ALS logic without buffers |
| Standby Current (ISB) | 40 mA max - low-power deselected state for system-level power gating |
| Operating Temperature | 0°C to +70°C - qualified for commercial-grade industrial control and instrumentation |
| Package | 32-pin 400-mil Plastic SOJ (PBG32) - surface-mount, JEDEC-standard footprint |
Pinout & Package
Package: 32-pin 400-mil Plastic SOJ (PBG32), JEDEC-standard center-power/GND configuration reducing simultaneous switching noise.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus for full 128K-word decoding; A16 enables 1-Mbit addressing |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit TTL-compatible data path; high-impedance when OE or CS inactive |
| CS | Chip Select | Active-low enable for device selection; controls tACS (12 ns) and tPD (12 ns) |
| OE | Output Enable | Active-low control of output drivers; enables tOE = 6 ns read latency |
| WE | Write Enable | Active-low write strobe; defines tWP = 8 ns minimum pulse width |
| VCC | Power Supply | +5 V supply pin; located at center-right (Pin 24 & Pin 11) per JEDEC pinout |
| GND | Ground | Reference ground; located at center-left (Pin 12 & Pin 23) for balanced noise rejection |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC Center-Power/GND Pinout | Reduces simultaneous switching noise by symmetrically distributing VCC/GND pins across center rows |
| Asynchronous Static Operation | No clock, no refresh, no hidden timing constraints - simplifies timing-critical control logic design |
| Dual Control Enables (CS + OE) | Allows independent gating of chip selection and output driver activation for multi-drop bus arbitration |
| TTL-Compatible I/O | Eliminates need for level translators when interfacing with legacy 74-series or microcontroller GPIOs |
| Low-Standby Power (ISB1 = 10 mA) | Enables deep-sleep modes in battery-backed or energy-sensitive systems without memory loss |
Applications
| Industrial PLC Memory Buffer | Legacy Network Interface Card (NIC) |
|---|---|
Use Scenario: Storing real-time I/O mapping tables and firmware scratchpad in programmable logic controllers with 5 V backplane buses. IC Role / Device Role / Timing Role: Asynchronous byte-wide SRAM providing zero-wait-state data exchange between CPU and field I/O modules. Use Value: 12 ns tAA ensures deterministic response within tight scan-cycle deadlines; center-GND/VCC layout suppresses noise in electrically noisy factory environments. | Use Scenario: Acting as packet buffer and descriptor memory in ISA-bus Ethernet adapters using 80186/80286 host processors. IC Role / Device Role / Timing Role: Parallel-accessed local memory for DMA-based frame buffering and register shadowing. Use Value: TTL-compatible I/O and 5 V operation eliminate interface logic; 32-pin SOJ fits constrained PCB layouts typical of vintage expansion cards. |
| Medical Instrument Data Logger | Avionics Display Controller Cache |
Use Scenario: Capturing high-resolution sensor waveforms (ECG, EEG) at up to 1 MS/s in portable diagnostic devices with battery backup. IC Role / Device Role / Timing Role: High-reliability volatile storage for pre-processing buffers before flash transfer. Use Value: ISB1 = 10 mA enables ultra-low-power retention during standby; 0°C to +70°C rating covers clinical ambient ranges. | Use Scenario: Serving as display list cache in ruggedized cockpit display units interfacing with MIL-STD-1553B host processors. IC Role / Device Role / Timing Role: Low-latency frame metadata store synchronized to raster timing signals. Use Value: 12 ns tAA supports pixel-rate updates without pipeline stalls; SOJ package withstands thermal cycling in sealed avionics enclosures. |
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-12ZXI | 128K × 8, 12 ns, 3.3 V core (5 V tolerant I/O), 32-pin TSOP II | Requires level translation for pure 5 V systems; lower ICC (55 mA) but incompatible VCC range | Select only if migrating to mixed-voltage designs with 3.3 V logic domains |
| AS6C1008-12ZIN | 128K × 8, 12 ns, 5 V, 32-pin SOJ, but with standard corner VCC/GND pinout | Lacks JEDEC center-power/GND; higher noise susceptibility in dense layouts | Prefer when board layout already uses conventional SOJ routing and noise margin is sufficient |
Compared with CY62128EV30LL-12ZXI and AS6C1008-12ZIN, the IDT71124S12Y8 uniquely delivers 5 V-native operation with JEDEC-optimized pinout for noise immunity - making it the only choice for legacy 5 V systems where signal integrity and drop-in compatibility are mandatory.
Availability
IDT71124S12Y8 is available at Aetrix Electronics and suitable for industrial PLCs, legacy network interface cards, and medical data loggers requiring stable component supply, long-lifecycle support, and verified 5 V TTL interoperability.
Supply support for IDT71124S12Y8 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 infrastructure markets.
The IDT71124S12Y8 belongs to Renesas' legacy high-speed parallel SRAM product line, designed specifically for backward-compatible replacement of aging 5 V memory subsystems in mission-critical industrial and communications equipment.
FAQ
What is the maximum operating frequency supported by the IDT71124S12Y8?
The IDT71124S12Y8 does not use a clock and therefore has no operating frequency specification. Its performance is defined by timing parameters: tRC = 12 ns read cycle time supports effective bus rates up to ~83 MHz in ideal conditions. Real-world throughput depends on system-level address/data setup/hold margins and bus arbitration overhead - not a clock domain.
Is the IDT71124S12Y8 pin-compatible with other speed grades in the same family?
Yes, the IDT71124S12Y8 shares identical pinout and package (32-pin PBG32 SOJ) with IDT71124S15Y8 and IDT71124S20Y8. All variants use the same JEDEC center-power/GND layout, identical address/data/control pin assignments, and TTL-compatible signaling - enabling direct substitution where timing margins allow.
Does the IDT71124S12Y8 require external pull-up or pull-down resistors on control pins?
No, the IDT71124S12Y8 does not require external biasing on CS, OE, or WE. Its inputs meet TTL voltage thresholds (VIH ≥ 2.2 V, VIL ≤ 0.8 V) and exhibit low leakage (<5 µA). Pull-ups are only needed if driving from open-collector sources or to enforce known states during reset - not inherent to the IDT71124S12Y8's operation.
Can the IDT71124S12Y8 be used in industrial temperature applications?
No - the IDT71124S12Y8 is specified only for the commercial temperature range (0°C to +70°C). Industrial-grade variants exist only for 15 ns and 20 ns speed grades (e.g., IDT71124S15YGI8). Using the IDT71124S12Y8 outside 0°C to +70°C violates its guaranteed AC/DC specifications and may result in timing violations or data corruption.
What is the meaning of "Y8" in the part number IDT71124S12Y8?
The "Y8" suffix in IDT71124S12Y8 indicates tape-and-reel packaging (8 = 8 mm carrier tape) in the 32-pin SOJ (PBG32) format. It denotes that the device ships in EIA-481-compliant 8 mm tape, optimized for automated SMT placement - distinct from the "YG" variant which uses tube packaging.
IDT71124S12Y8 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:
- 12ns
- Access Time:
- 12 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
IDT71124S12Y8 FAQ
1.How can I place an order for IDT71124S12Y8 through Aetrix?
Please submit a Request for Quotation (RFQ) for IDT71124S12Y8 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 IDT71124S12Y8 reliable?
The price and inventory of IDT71124S12Y8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IDT71124S12Y8 is usually 5 days.
3.What payment methods are accepted for IDT71124S12Y8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IDT71124S12Y8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IDT71124S12Y8?
IDT71124S12Y8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IDT71124S12Y8 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 IDT71124S12Y8?
For technical support, including IDT71124S12Y8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IDT71124S12Y8 requirements.
6.How does Aetrix verify that IDT71124S12Y8 is sourced from the original manufacturer or authorized distributors?
All IDT71124S12Y8 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 IDT71124S12Y8 meets industry standards.
7.What is the process for return or replacement of IDT71124S12Y8?
All IDT71124S12Y8 units undergo pre-shipment inspection (PSI). If there is an issue with IDT71124S12Y8, 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 IDT71124S12Y8 part is unused and in its original packaging.
Return procedure for IDT71124S12Y8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
IDT71124S12Y8 Tags
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M24C02-WMN6TP
STMicroelectronics
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AT24C02C-XHM-T
Microchip Technology
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AT21CS01-STUM10-T
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24LC01BT-I/OT
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M24C02-FMC6TG
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AT24CS02-SSHM-T
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93LC46BT-I/OT
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AT24C04C-SSHM-T
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AT24C08C-STUM-T
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