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Renesas IDT71024S15TYI
- Part No.:
- IDT71024S15TYI
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 32-BSOJ (0.300", 7.62mm Width)
- Datasheet:
-
IDT71024S15TYI.pdf
- Description:
- IC SRAM 1MBIT PARALLEL 32SOJ
- Quantity:
- Payment:
- Shipping:
Inventory:3,252
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Product details
Overview
IDT71024S15TYI 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 300-mil Plastic SOJ. It features dual chip select (CS1/CS2), TTL-compatible bidirectional I/O, and output enable (OE) for fast 7 ns read access - used in real-time embedded controllers and legacy industrial memory subsystems requiring deterministic asynchronous operation.
For engineers reviewing the IDT71024S15TYI datasheet, IDT71024S15TYI pinout, IDT71024S15TYI application, or IDT71024S15TYI equivalent, key selection criteria include guaranteed 15 ns tAA and tRC timing across industrial temperature, low 10 µA ISB1 standby current, SOJ-32 mechanical compatibility, and direct replacement capability in legacy SRAM-based address/data bus architectures.
Technical Context
The IDT71024S15TYI implements fully static asynchronous logic with no clocks or refresh cycles required. Its dual CS architecture 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 the device operates from a single 5.0 V ±10% supply. 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 data valid within 15 ns of address/CS assertion for synchronous bus interfacing |
| Read Cycle Time (tRC) | 15 ns max - defines minimum interval between successive read operations |
| Supply Voltage | 5.0 V ±10% (4.5–5.5 V) - compatible with legacy 5 V TTL/CMOS system rails |
| Operating Temperature | –40°C to +85°C - qualified for industrial environments without derating |
| Standby Current (ISB1) | 10 µA max - enables ultra-low-power hold mode when CS1 ≥ VHC or CS2 ≤ VLC |
| I/O Capacitance | CI/O = 8 pF max - ensures signal integrity on stub-loaded buses up to 10 MHz |
Pinout & Package
Package: 32-pin Plastic SOJ (300-mil width, PJG32 footprint), surface-mount, gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus (A0 LSB to A16 MSB) selects one of 131,072 bytes |
| 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 active for access |
| OE | Output Enable | Active-Low control of output drivers; enables bus sharing without external tri-state logic |
| WE | Write Enable | Active-Low write strobe; latches data on falling edge when CS1/CS2 active |
| VCC, GND | Power Supply | Single 5 V supply; decoupling required within 10 mm of VCC pin per JEDEC standards |
Key Features
| Feature | Design Value |
|---|---|
| Asynchronous Static Operation | No clocks, no refresh cycles - eliminates timing controller overhead in microcontroller co-processor interfaces |
| Dual Threshold Standby Modes | ISB1 = 10 µA (CMOS-level CS deassertion) vs ISB = 40 mA (TTL-level) - enables power-aware sleep/wake sequencing |
| TTL-Compatible I/O | VIH = 2.2 V min, VIL = 0.8 V max - interoperable with legacy 5 V logic families without level shifters |
| Fast Output Enable | tOE = 7 ns max - supports burst-mode reads with minimal bus turnaround delay |
| SOJ-32 Mechanical Standardization | PJG32 footprint (300-mil width) - matches industry-standard socket and rework tooling for legacy board repair |
Applications
| Industrial PLC Memory Buffer | Legacy Telecom Line Card Cache |
|---|---|
|
Use Scenario: Real-time I/O scanning in programmable logic controllers where deterministic memory latency is critical for cycle-time compliance. IC Role / Device Role / Timing Role: Asynchronous byte-wide SRAM providing zero-wait-state data storage for ladder logic execution buffers. Use Value: 15 ns tAA ensures sub-20 ns memory response under full industrial temperature range, eliminating pipeline stalls in 10–20 µs scan cycles. |
Use Scenario: Packet header buffering in TDM-based telecom line cards using Motorola 68K or Zilog Z80 derivatives. IC Role / Device Role / Timing Role: Non-refreshed, pin-compatible SRAM replacing older 2K×8 or 8K×8 devices in backplane-addressed memory maps. Use Value: Dual CS inputs allow seamless integration into multi-slot chassis addressing schemes without additional decode logic. |
| Military Avionics Display Frame Buffer | Medical Imaging Control Subsystem |
|
Use Scenario: Rasterized display list storage in ruggedized cockpit displays requiring extended temperature qualification. IC Role / Device Role / Timing Role: Static frame buffer memory accessed by dedicated graphics DMA engines with fixed burst patterns. Use Value: –40°C to +85°C rating and 10 µA ISB1 support cold-soak startup and low-power standby during non-display periods. |
Use Scenario: Configuration and calibration parameter storage in FDA-cleared diagnostic imaging equipment with long service life requirements. IC Role / Device Role / Timing Role: Non-volatile shadow RAM holding EEPROM-backed settings, accessed during boot initialization sequences. Use Value: 5 V single-supply operation simplifies power architecture versus mixed-voltage alternatives, reducing BOM count. |
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 | 128K × 8, 45 ns speed grade, 3.3 V core (with 5 V tolerant I/O), SOJ-32 | Requires level translation or dual-supply design; not drop-in for 5 V-only systems | Select only if migrating to lower-voltage logic; verify VIH/VIL compatibility with host MCU |
| AS6C1008-15PCN | 128K × 8, 15 ns, 5 V, SOJ-32, but uses single CS and no OE pin | Lacks OE-controlled output disable - requires external bus transceivers for shared-data-bus designs | Use where simplified decode is acceptable and bus contention is managed externally |
Compared with CY62128EV30LL-45ZSXIT and AS6C1008-15PCN, the IDT71024S15TYI uniquely delivers 5 V-native operation with dual CS + OE for flexible bus arbitration, making it irreplaceable in legacy 5 V industrial backplanes without redesign.
Availability
IDT71024S15TYI is available at Aetrix Electronics and suitable for industrial PLCs, legacy telecom line cards, military avionics displays, and medical imaging subsystems requiring stable component supply and long-term obsolescence management.
Supply support for IDT71024S15TYI 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 IDT71024S15TYI belongs to Renesas' legacy high-speed parallel SRAM product line, designed specifically for deterministic, low-latency memory expansion in 5 V embedded control and communications systems.
FAQ
What is the operating voltage range for the IDT71024S15TYI?
The IDT71024S15TYI operates from a single 5.0 V supply with a tolerance of ±10%, meaning its valid range is 4.5 V to 5.5 V. This specification is strictly defined in the DC Operating Conditions table of the official Renesas datasheet, and operation outside this range may cause data corruption or permanent damage. The IDT71024S15TYI does not support 3.3 V or mixed-voltage operation.
Does the IDT71024S15TYI require a clock or refresh signal?
No, the IDT71024S15TYI is a fully static asynchronous SRAM and requires neither a clock nor periodic refresh cycles. Its internal circuitry maintains data indefinitely as long as power and valid control signals (CS1/CS2/OE/WE) are applied. This eliminates timing controller overhead and makes the IDT71024S15TYI ideal for simple microprocessor or FPGA-based memory interfaces.
What is the function of the two chip select pins (CS1 and CS2) on the IDT71024S15TYI?
CS1 is an active-low chip select and CS2 is an active-high chip select; both must be asserted simultaneously (CS1 = L, CS2 = H) for the IDT71024S15TYI to respond to address and data activity. This dual-CS architecture enables hierarchical memory decoding in systems with multiple SRAM devices or complex address mapping, reducing external logic compared to single-CS alternatives.
Can the IDT71024S15TYI be used in place of faster or slower speed grades like IDT71024S12TYI or IDT71024S20TYI?
Yes - the IDT71024S15TYI is pin-compatible with other IDT71024Sxx speed grades (e.g., S12, S20) in the same package (PJG32 SOJ). However, timing margins must be verified: substituting a slower grade may violate setup/hold times in high-frequency systems, while a faster grade offers no functional benefit unless the host interface demands tighter tAA/tRC.
Is the IDT71024S15TYI RoHS-compliant and lead-free?
Yes, the "G" suffix in IDT71024S15TYI indicates a green (RoHS-compliant, lead-free) device per Renesas' ordering nomenclature. This is confirmed in the Datasheet Document History (v3/30/21) and Ordering Information section, which explicitly lists "Green" availability for all speed/package combinations including IDT71024S15TYI.
IDT71024S15TYI 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-SOJ
IDT71024S15TYI FAQ
1.How can I place an order for IDT71024S15TYI through Aetrix?
Please submit a Request for Quotation (RFQ) for IDT71024S15TYI 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 IDT71024S15TYI reliable?
The price and inventory of IDT71024S15TYI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IDT71024S15TYI is usually 5 days.
3.What payment methods are accepted for IDT71024S15TYI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IDT71024S15TYI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IDT71024S15TYI?
IDT71024S15TYI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IDT71024S15TYI 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 IDT71024S15TYI?
For technical support, including IDT71024S15TYI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IDT71024S15TYI requirements.
6.How does Aetrix verify that IDT71024S15TYI is sourced from the original manufacturer or authorized distributors?
All IDT71024S15TYI 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 IDT71024S15TYI meets industry standards.
7.What is the process for return or replacement of IDT71024S15TYI?
All IDT71024S15TYI units undergo pre-shipment inspection (PSI). If there is an issue with IDT71024S15TYI, 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 IDT71024S15TYI part is unused and in its original packaging.
Return procedure for IDT71024S15TYI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
IDT71024S15TYI Tags
-
M24C02-WMN6TP
STMicroelectronics
-
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
-
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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