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Renesas IDT71024S15TYI8
- Part No.:
- IDT71024S15TYI8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 32-BSOJ (0.300", 7.62mm Width)
- Datasheet:
-
IDT71024S15TYI8.pdf
- Description:
- IC SRAM 1MBIT PARALLEL 32SOJ
- Quantity:
- Payment:
- Shipping:
Inventory:1,247
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Product details
Overview
IDT71024S15TYI8 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 serves as asynchronous main memory or buffer storage in embedded controllers, industrial PLCs, and legacy communication interface cards requiring deterministic timing and zero-refresh operation.
For engineers reviewing the IDT71024S15TYI8 datasheet, IDT71024S15TYI8 pinout, IDT71024S15TYI8 application, or IDT71024S15TYI8 equivalent, key selection criteria include TTL-compatible bidirectional I/O, dual chip select architecture with independent OE control, low standby current (10 mA ISB1), and verified 15 ns read/write cycle performance under industrial thermal conditions.
Technical Context
The IDT71024S15TYI8 implements fully static asynchronous logic with no clocks or refresh cycles required. Its dual CS architecture (CS1 active-low, CS2 active-high) enables hierarchical memory decoding, while OE allows output gating independent of chip selection - critical for bus arbitration in multi-master systems.
All inputs and outputs are TTL-compatible (VIH = 2.2 V min, VIL = 0.8 V max), and the device supports three power states: active read/write (ICC = 155 mA), TTL-level standby (ISB = 40 mA), and deep CMOS-level standby (ISB1 = 10 mA), enabling dynamic power management in battery-sensitive industrial nodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 128K × 8-bit (1,048,576 bits); supports byte-wide data bus without external multiplexing |
| Access Time (tAA) | 15 ns max; guarantees data valid within 15 ns of address/CS assertion - meets 66 MHz bus timing margins |
| 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 control cabinets and outdoor telecom enclosures |
| Standby Current (ISB1) | 10 mA max at VCC max; enables low-power sleep mode during processor idle cycles |
| I/O Capacitance | CI/O = 8 pF max; minimizes signal integrity degradation on high-speed parallel buses |
| Output Enable Delay (tOE) | 7 ns max; ensures fast data release after OE assertion - critical for burst-mode transfers |
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); fully decoded for 128K address space |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit TTL-compatible data path; direction controlled by WE and CS states |
| CS1 | Chip Select 1 (Active Low) | Primary enable; device selected only when CS1 = L and CS2 = H simultaneously |
| CS2 | Chip Select 2 (Active High) | Secondary enable; forms ANDed selection with CS1 - prevents partial decode glitches |
| OE | Output Enable (Active Low) | Gates outputs independently of CS; enables shared-bus contention control |
| WE | Write Enable (Active Low) | Controls write cycle initiation; latches data on falling edge when CS enabled |
| VCC | Power Supply | +5 V supply pin; requires local 0.1 µF ceramic decoupling per JEDEC guidelines |
| GND | Ground | Signal reference plane; dedicated pin adjacent to VCC for low-inductance return path |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent chip selects (CS1/CS2) | Enables hierarchical memory mapping without external logic; eliminates address decoder fanout |
| TTL-compatible I/O with 8 pF max capacitance | Direct interface to 74LS/74ALS logic families; reduces need for level-shifting or bus buffers |
| Three-tier power management (active/ISB/ISB1) | Supports dynamic power scaling: full operation → partial standby → deep sleep (10 mA) |
| 15 ns guaranteed access across industrial temp range | Validated timing at –40°C/+85°C ensures real-time determinism in harsh environments |
| No refresh or clock required | Reduces system complexity - ideal for microcontroller-based designs with limited GPIO resources |
Applications
| Industrial PLC Memory Buffer | Legacy Network Interface Card Cache |
|---|---|
|
Use Scenario: Storing real-time I/O scan data and ladder logic intermediate results in modular programmable logic controllers. IC Role / Device Role / Timing Role: Asynchronous byte-wide SRAM providing zero-latency read/write access for deterministic cyclic execution. Use Value: 15 ns tAA ensures full I/O update within single 10 ms PLC scan cycle, even at –40°C ambient. |
Use Scenario: Acting as packet buffer and descriptor table storage in PCI-based Ethernet or serial communication adapters. IC Role / Device Role / Timing Role: Shared-bus SRAM interfacing directly to 5 V PCI bus via CS1/CS2 decoding and OE-controlled tristate. Use Value: Dual CS architecture prevents bus contention during DMA bursts; ISB1 = 10 mA extends uptime in fanless telecom chassis. |
| Avionics Display Frame Buffer | Medical Imaging Control Board Memory |
|
Use Scenario: Holding rasterized display data for monochrome cockpit instrumentation with MIL-STD-810 thermal cycling. IC Role / Device Role / Timing Role: Non-refreshing frame buffer memory accessed by dedicated graphics controller with fixed address windows. Use Value: Industrial-grade qualification (–40°C to +85°C) and 100% tested 15 ns timing ensure pixel-perfect rendering across flight envelope. |
Use Scenario: Storing calibration tables and real-time sensor fusion coefficients in portable ultrasound or MRI control boards. IC Role / Device Role / Timing Role: Static configuration memory mapped into ARM Cortex-M4's AHB bus using GPIO-driven CS decoding. Use Value: TTL-compatible I/O eliminates level shifters; 8 pF CI/O maintains signal integrity on 10 cm PCB traces routed near analog front-end sections. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed static RAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY62128EV30LL-45ZSXIT | 512K × 8-bit, 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 in pure 5 V systems | Select when board redesign allows 3.3 V supply and longer access latency is acceptable |
| AS6C4008-15PIN | 512K × 8-bit, 15 ns access, 5 V only, 32-pin SOJ (PBG32), ISB1 = 25 µA | Same speed and voltage, but lower standby current and larger capacity; different pinout (no A16) | Select when upgrading capacity without changing timing, and layout supports PBG32 footprint |
Compared with CY62128EV30LL-45ZSXIT and AS6C4008-15PIN, the IDT71024S15TYI8 delivers verified 15 ns industrial-grade performance in the original 300-mil SOJ form factor, making it the only drop-in replacement for legacy 128K × 8 designs requiring unchanged PCB layout and 5 V-only operation.
Availability
IDT71024S15TYI8 is available at Aetrix Electronics and suitable for industrial PLCs, legacy network interface cards, avionics displays, and medical imaging control boards requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for IDT71024S15TYI8 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 IoT applications.
The IDT71024S15TYI8 belongs to Renesas' legacy high-speed CMOS SRAM product line, designed specifically for deterministic, zero-refresh memory needs in 5 V industrial control and communications infrastructure.
FAQ
What is the operating temperature range specified for the IDT71024S15TYI8?
The IDT71024S15TYI8 is rated for industrial temperature operation from –40°C to +85°C. This range is explicitly confirmed in the ordering information ('I' suffix) and validated across all AC/DC electrical parameters in the datasheet, including ICC, ISB, and tAA. The device undergoes full characterization at both extremes, not just burn-in screening.
Does the IDT71024S15TYI8 require a clock or refresh circuit?
No, the IDT71024S15TYI8 uses fully static CMOS design and requires no clock input or periodic refresh cycles. Its operation is purely asynchronous - data retention is maintained as long as VCC is applied and inputs remain within valid logic levels. This eliminates timing-critical refresh overhead in microcontroller-based systems.
What package type and pin count does the IDT71024S15TYI8 use?
The IDT71024S15TYI8 is supplied in a 32-pin Plastic SOJ package with 300-mil body width (PJG32). Pinout matches JEDEC standard SOJ-32, with address lines A0–A16, bidirectional I/O0–I/O7, dual chip selects (CS1, CS2), OE, WE, VCC, and GND - fully documented in the "Pin Configuration" diagram on page 4 of the datasheet.
How does the dual chip select (CS1/CS2) architecture improve system design?
The IDT71024S15TYI8 requires both CS1 LOW and CS2 HIGH to enable the device, preventing partial selection due to noise or slow signal edges. This AND-gated enable logic eliminates false reads/writes in dense memory arrays and simplifies address decoding - especially useful in systems with multiple SRAM devices sharing a common address bus.
Is the IDT71024S15TYI8 RoHS-compliant and lead-free?
Yes, the 'G' suffix in IDT71024S15TYI8 indicates Green (lead-free, halogen-free) compliance per Renesas' updated ordering information (page 7, March 2021 revision). It meets RoHS Directive 2011/65/EU and is marked as a restricted hazardous substance device, with full material declarations available through Renesas' product change notifications.
IDT71024S15TYI8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 32-BSOJ (0.300", 7.62mm 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
IDT71024S15TYI8 FAQ
1.How can I place an order for IDT71024S15TYI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for IDT71024S15TYI8 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 IDT71024S15TYI8 reliable?
The price and inventory of IDT71024S15TYI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IDT71024S15TYI8 is usually 5 days.
3.What payment methods are accepted for IDT71024S15TYI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IDT71024S15TYI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IDT71024S15TYI8?
IDT71024S15TYI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IDT71024S15TYI8 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 IDT71024S15TYI8?
For technical support, including IDT71024S15TYI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IDT71024S15TYI8 requirements.
6.How does Aetrix verify that IDT71024S15TYI8 is sourced from the original manufacturer or authorized distributors?
All IDT71024S15TYI8 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 IDT71024S15TYI8 meets industry standards.
7.What is the process for return or replacement of IDT71024S15TYI8?
All IDT71024S15TYI8 units undergo pre-shipment inspection (PSI). If there is an issue with IDT71024S15TYI8, 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 IDT71024S15TYI8 part is unused and in its original packaging.
Return procedure for IDT71024S15TYI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
IDT71024S15TYI8 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
Microchip Technology
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24LC01BT-I/OT
Microchip Technology
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M24C02-FMC6TG
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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
Microchip Technology
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