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Renesas IDT71024S15TY
- Part No.:
- IDT71024S15TY
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 32-BSOJ (0.300", 7.62mm Width)
- Datasheet:
-
IDT71024S15TY.pdf
- Description:
- IC SRAM 1MBIT PARALLEL 32SOJ
- Quantity:
- Payment:
- Shipping:
Inventory:2,369
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Product details
Overview
IDT71024S15TY from Renesas Electronics is a 128K × 8-bit (1 Mbit) high-speed CMOS static RAM with 15 ns access and cycle times, operating from a single 5.0 V ±10% supply across commercial (0°C to +70°C) and industrial (–40°C to +85°C) temperature ranges. It features dual chip selects (CS1, CS2), TTL-compatible bidirectional I/Os, and an output enable (OE) pin enabling 7 ns output valid timing - used in embedded controllers, instrumentation buffers, and real-time data acquisition systems requiring deterministic memory access.
For engineers reviewing the IDT71024S15TY datasheet, IDT71024S15TY pinout, IDT71024S15TY application, or IDT71024S15TY equivalent, key selection considerations include its 32-pin 300-mil SOJ package, 128K × 8 organization, 15 ns read/write timing, low-power standby modes (ISB = 40 mA, ISB1 = 10 mA), and compatibility with legacy 5 V TTL bus interfaces without level translation.
Technical Context
The IDT71024S15TY implements fully static asynchronous architecture-no clocks or refresh required-and uses dual-level chip select logic (CS1 active-low, CS2 active-high) to enable hierarchical memory banking. Its OE-controlled output timing allows interleaved read cycles independent of write control, supporting burst-mode data streaming in microcontroller peripherals.
All inputs and outputs are TTL-compatible (VIH = 2.2 V min, VIL = 0.8 V max), and bidirectional I/O pins drive ±8 mA (IOL = 8 mA, IOH = –4 mA) while maintaining VOL ≤ 0.4 V and VOH ≥ 2.4 V under worst-case VCC = 4.5 V. Standby current drops to 10 mA (ISB1) when both CS1 ≥ VHC and CS2 ≤ VLC, enabling deep power-down in battery-backed systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 128K × 8-bit (1,048,576 bits); supports byte-wide parallel data interface without address multiplexing |
| Access Time (tAA) | 15 ns max at VCC = 4.5 V, TA = +85°C; enables CPU wait-state-free operation with 66 MHz bus clocks |
| Read Cycle Time (tRC) | 15 ns max; matches tAA for equal access/cycle timing - simplifies timing budgeting in synchronous designs |
| Supply Voltage | 5.0 V ±10% (4.5–5.5 V); compatible with legacy 5 V logic families without regulation overhead |
| Operating Temperature | –40°C to +85°C (industrial grade); validated for use in automotive body control modules and industrial PLC I/O buffers |
| Standby Current (ISB1) | 10 mA max at VCC = 5.5 V, f = 0; enables <100 µW sleep power when CS1/CS2 held at CMOS threshold levels |
| I/O Capacitance | CI/O = 8 pF max (SOJ package); limits signal integrity degradation on 50 Ω traces up to ~100 MHz edge rates |
Pinout & Package
Package: 32-pin Plastic SOJ (300 mil width, PJG32 footprint), gull-wing leads, RoHS-compliant green variant available.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus (A0 LSB to A16 MSB); decodes 128K locations; no internal latching - requires stable address during CS1/CS2 assertion |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit TTL-compatible data path; high-impedance when CS1 high or CS2 low or OE high; drives ±8 mA |
| CS1 | Chip Select 1 | Active-low primary enable; must be low with CS2 high for device selection; controls power-up timing (tPU = 0 ns) |
| CS2 | Chip Select 2 | Active-high secondary enable; complements CS1 for bank selection or hierarchical decoding; enables ISB1 mode when ≤ VLC |
| WE | Write Enable | Active-low write control; initiates write cycle only when CS1 low AND CS2 high; tWP = 12 ns min ensures data setup before WE deassertion |
| OE | Output Enable | Active-low output gate; tOE = 7 ns max defines earliest valid read data window after OE assertion; overrides WE state during reads |
| VCC | Power Supply | +5.0 V ±10% main supply; powers core logic and I/O drivers; bypass capacitor recommended at pin |
| GND | Ground Reference | Signal and power return; separate ground plane recommended to minimize noise coupling into I/O paths |
Key Features
| Feature | Design Value |
|---|---|
| Dual Chip Select Architecture | CS1 (active-low) and CS2 (active-high) allow 2-chip memory banking or hierarchical decode without external logic |
| TTL-Compatible I/O Interface | No level shifters needed for 5 V microcontrollers, FPGAs, or ASICs - reduces BOM count and layout complexity |
| Equal Access and Cycle Timing | tAA = tRC = 15 ns eliminates timing margin asymmetry - simplifies PCB trace length matching and timing closure |
| Low-Power Standby Modes | ISB1 = 10 mA at CMOS-level deselect (CS1 ≥ VHC, CS2 ≤ VLC) enables energy-efficient buffering in always-on subsystems |
| Industrial Temperature Support | Validated operation from –40°C to +85°C ensures reliability in engine control units, motor drives, and outdoor telecom equipment |
Applications
| Industrial Data Logger | Legacy Microcontroller Buffer |
|---|---|
|
Use Scenario: High-speed cyclic capture of sensor data (e.g., thermocouple arrays, vibration monitors) at 10–100 kHz sample rates with local preprocessing. IC Role / Device Role / Timing Role: Primary scratchpad memory for real-time firmware; provides deterministic 15 ns read/write latency to support interrupt-driven DMA bursts. Use Value: Eliminates wait states for 8051- and Z80-based controllers; 128K depth accommodates multi-channel ring buffers without external DRAM refresh overhead. |
Use Scenario: Interfacing between aging 8-bit CPUs (e.g., Intel 8085, Motorola 6809) and modern peripherals via ISA-style backplanes. IC Role / Device Role / Timing Role: Byte-wide memory-mapped I/O buffer; acts as fast shadow RAM for register staging and command queuing. Use Value: TTL compatibility and 5 V operation avoid level-shifter ICs; dual CS pins simplify address decoding in 64 KB segmented memory maps. |
| Automotive Body Control Module | Test Equipment FIFO Buffer |
|
Use Scenario: Storing transient fault codes, calibration tables, and CAN message queues in door modules and seat controllers. IC Role / Device Role / Timing Role: Nonvolatile shadow RAM (paired with EEPROM) for fast read/write of volatile configuration data during ignition cycles. Use Value: Industrial temp rating (–40°C to +85°C) and 10 mA ISB1 support cold-cranking and under-hood thermal cycling without data loss. |
Use Scenario: Real-time waveform capture in digital storage oscilloscopes and boundary-scan testers requiring >1 MS/s sustained write throughput. IC Role / Device Role / Timing Role: First-in-first-out (FIFO) buffer stage; accepts parallel data from ADC front-ends and feeds serializers or DSP engines. Use Value: 15 ns cycle time enables 66.7 MHz effective throughput (15 ns × 8 bits = 533 Mbps); SOJ package supports compact multilayer PCB layouts. |
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-45ZSXIT | 512K × 8, 45 ns access, 3.3 V core (with 5 V tolerant I/O), 32-pin TSOP II | Higher density but slower speed; requires voltage translation for pure 5 V systems | Select when system migration to 3.3 V logic is planned and longer access time is acceptable |
| AS6C1008-15PCN | 128K × 8, 15 ns access, 5 V operation, 32-pin SOJ - identical timing and voltage, but lower ICC (120 mA vs. 155 mA) | Drop-in replacement in most 5 V designs; same pinout and AC/DC specs except reduced dynamic current | Prefer for new designs where lower power consumption and RoHS compliance are prioritized over legacy IDT branding |
Compared with CY62128EV30LL-45ZSXIT, the IDT71024S15TY delivers 3× faster access for 5 V-only systems; versus AS6C1008-15PCN, it offers identical timing but higher ICC - making the latter preferable for thermally constrained or battery-assisted applications.
Availability
IDT71024S15TY is available at Aetrix Electronics and suitable for industrial data loggers, legacy microcontroller buffers, automotive body control modules, and test equipment FIFO buffers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for IDT71024S15TY 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 IDT71024S15TY belongs to Renesas' legacy high-speed parallel SRAM product line, designed specifically for 5 V TTL-based systems requiring deterministic, low-latency memory access without refresh circuitry.
FAQ
What is the maximum clock frequency supported by the IDT71024S15TY?
The IDT71024S15TY is a fully static asynchronous SRAM and does not use a clock signal. Its performance is defined by timing parameters: tRC = 15 ns minimum cycle time corresponds to a maximum effective throughput of 66.7 MHz for consecutive read/write operations. System timing must satisfy tAA ≤ 15 ns, tWP ≥ 12 ns, and tOH ≥ 4 ns per the datasheet's AC characteristics table.
Does the IDT71024S15TY support battery backup operation?
Yes - the IDT71024S15TY retains data under VCC as low as 2.0 V (per absolute maximum ratings), and its ISB1 standby current is only 10 mA at full VCC, scaling downward with supply voltage. When paired with a coin-cell backup and diode-OR circuit, it functions as nonvolatile SRAM for critical configuration storage in power-loss scenarios.
Can the IDT71024S15TY be used with 3.3 V microcontrollers?
No - the IDT71024S15TY requires a 5.0 V ±10% supply and has TTL-compatible input thresholds (VIH ≥ 2.2 V, VIL ≤ 0.8 V). Direct interfacing with 3.3 V logic risks marginal VIH margins and violates VIL spec under noise. A level translator such as the TXB0108 or discrete resistor-divider network is required for reliable operation.
What is the meaning of "TY" in the part number IDT71024S15TY?
In the IDT71024S15TY ordering code, "TY" denotes the 300-mil wide Plastic SOJ package (PJG32) with commercial temperature range (0°C to +70°C). The "S15" indicates 15 ns speed grade, and "TY" specifically identifies the 32-pin SOJ variant - distinct from "YG", which denotes the 400-mil SOJ (PBG32) package.
Is the IDT71024S15TY pin-compatible with other IDT71024 speed grades?
Yes - all IDT71024 variants (e.g., IDT71024S12TY, IDT71024S15TY, IDT71024S20TY) share identical 32-pin SOJ pinouts, DC electrical characteristics, and functional logic. Only AC timing parameters differ: tAA/tRC are 12 ns, 15 ns, or 20 ns respectively. This allows direct speed-grade substitution without PCB changes if timing margins permit.
IDT71024S15TY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 32-BSOJ (0.300", 7.62mm 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
IDT71024S15TY FAQ
1.How can I place an order for IDT71024S15TY through Aetrix?
Please submit a Request for Quotation (RFQ) for IDT71024S15TY 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 IDT71024S15TY reliable?
The price and inventory of IDT71024S15TY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IDT71024S15TY is usually 5 days.
3.What payment methods are accepted for IDT71024S15TY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IDT71024S15TY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IDT71024S15TY?
IDT71024S15TY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IDT71024S15TY 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 IDT71024S15TY?
For technical support, including IDT71024S15TY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IDT71024S15TY requirements.
6.How does Aetrix verify that IDT71024S15TY is sourced from the original manufacturer or authorized distributors?
All IDT71024S15TY 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 IDT71024S15TY meets industry standards.
7.What is the process for return or replacement of IDT71024S15TY?
All IDT71024S15TY units undergo pre-shipment inspection (PSI). If there is an issue with IDT71024S15TY, 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 IDT71024S15TY part is unused and in its original packaging.
Return procedure for IDT71024S15TY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
IDT71024S15TY Tags
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AT24C02C-XHM-T
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