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Renesas IDT71024S20TY
- Part No.:
- IDT71024S20TY
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 32-BSOJ (0.300", 7.62mm Width)
- Datasheet:
-
IDT71024S20TY.pdf
- Description:
- IC SRAM 1MBIT PARALLEL 32SOJ
- Quantity:
- Payment:
- Shipping:
Inventory:1,820
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Product details
Overview
IDT71024S20TY from Renesas Electronics is a 128K × 8-bit (1 Mbit) high-speed CMOS static RAM with 20 ns read/write cycle time, TTL-compatible I/O, and dual chip select plus output enable control. It operates from a single +5.0 V ±10% supply across commercial (0°C to +70°C) and industrial (–40°C to +85°C) temperature ranges, and is used in real-time data buffering for legacy industrial controllers and telecom line cards.
For engineers reviewing the IDT71024S20TY datasheet, IDT71024S20TY pinout, IDT71024S20TY application, or IDT71024S20TY equivalent, key selection criteria include access time (tAA ≤ 20 ns), standby current (ISB1 = 10 mA), SOJ-32 package compatibility, and direct replacement feasibility in 5 V memory subsystems requiring no refresh or clocking.
Technical Context
The IDT71024S20TY implements fully static asynchronous operation-no clocks, no refresh cycles-using high-reliability CMOS technology. Its bidirectional I/O pins are TTL-compatible (VIH ≥ 2.2 V, VIL ≤ 0.8 V), and it supports two independent chip select inputs (CS1, CS2) with separate output enable (OE) for flexible memory banking and bus isolation.
Power management includes three distinct operating states: active (ICC = 140 mA at fMAX), TTL-level standby (ISB = 40 mA), and CMOS-level full standby (ISB1 = 10 mA). Timing is defined by guaranteed AC parameters including tRC = 20 ns, tOE = 8 ns, and tWHZ = 8 ns, all validated over full temperature and voltage ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 128K × 8-bit (1,048,576 bits), byte-wide parallel interface |
| Access Time (tAA) | 20 ns max - determines minimum address hold before valid data appears on I/O |
| Read Cycle Time (tRC) | 20 ns max - sets shortest interval between successive read operations |
| Supply Voltage | +5.0 V ±10% - compatible with legacy 5 V logic families without level shifting |
| Operating Temperature | –40°C to +85°C - qualified for industrial embedded environments |
| Standby Current (ISB1) | 10 mA max - enables low-power sleep mode when both CS1 ≥ VHC and CS2 ≤ VLC |
| I/O Compatibility | TTL - interfaces directly with 74LS/ALS logic without buffers or translators |
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 supporting full 128K address space (A16 is MSB) |
| 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 memory decoding |
| OE | Output Enable | Active-low control of I/O drivers; allows shared bus operation with other devices |
| WE | Write Enable | Active-low signal initiating write cycle; latches data on falling edge when CS active |
| VCC, GND | Power Supply | Single +5 V supply; decoupling required per JEDEC SOJ layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Zero-refresh static architecture | Eliminates external refresh circuitry and timing constraints in microcontroller-based systems |
| Dual chip select with independent polarity | Enables seamless integration into multi-bank memory maps using standard address decode logic |
| 6 ns OE-to-output delay (tOE) | Supports tight timing margins in high-speed CPU bus interfacing (e.g., Motorola 68000 derivatives) |
| CMOS-level full standby (ISB1 = 10 mA) | Reduces power by >75% vs. active mode while retaining data integrity during idle periods |
| Green (RoHS-compliant) packaging | Meets EU Directive 2011/65/EU without lead or halogen restrictions affecting reliability |
Applications
| Industrial PLC Data Buffer | Telecom Line Card Memory |
|---|---|
Use Scenario: Real-time I/O scanning and register mirroring in programmable logic controllers with deterministic scan cycles. IC Role / Device Role / Timing Role: High-speed scratchpad memory holding input/output image tables and intermediate calculation results. Use Value: 20 ns access ensures sub-10 µs register update latency under worst-case 5 V bus loading, meeting IEC 61131-3 cycle time requirements. | Use Scenario: Frame buffering and protocol translation in T1/E1 line interface units handling multiple DS0 channels. IC Role / Device Role / Timing Role: Dual-port accessible storage for incoming/outgoing frame payloads with simultaneous read/write arbitration. Use Value: Bidirectional TTL I/O and 20 ns cycle time support concurrent HDLC receive/transmit DMA bursts without wait states. |
| Legacy Avionics Display Controller | Medical Imaging Acquisition Buffer |
Use Scenario: Pixel data staging between analog video digitizers and raster display engines in certified cockpit displays. IC Role / Device Role / Timing Role: Synchronous frame store synchronized to horizontal sync and pixel clock domains. Use Value: No-refresh operation prevents memory corruption during EMI transients common in aircraft electrical environments. | Use Scenario: Raw sensor data capture from CCD/CMOS arrays prior to FPGA-based compression in portable ultrasound systems. IC Role / Device Role / Timing Role: Burst-mode write buffer accepting high-throughput ADC streams with minimal host CPU overhead. Use Value: 140 mA dynamic current and 20 ns tWC enable sustained 50 MB/s write throughput matching 14-bit × 40 MSPS imaging sensors. |
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-45ZXI | 45 ns access, 3.3 V core (with 5 V tolerant I/O), 32-pin TSOP-II | Requires level-shifting for pure 5 V systems; lower power but slower timing | Select when migrating to 3.3 V infrastructure and timing budget allows ≥45 ns latency |
| AS6C1008-20PCN | 20 ns access, +5 V only, 32-pin SOP (not SOJ), ISB1 = 25 mA | Same speed and voltage, but different package footprint and higher standby current | Choose for through-hole prototyping or where SOJ rework capability is unavailable |
Compared with CY62128EV30LL-45ZXI and AS6C1008-20PCN, the IDT71024S20TY delivers identical 20 ns performance in a legacy-qualified SOJ package with lowest full-standby current (10 mA), making it optimal for drop-in replacement in fielded 5 V industrial hardware where PCB layout and thermal profile are fixed.
Availability
IDT71024S20TY is available at Aetrix Electronics and suitable for industrial PLC data buffering, telecom line card memory, and legacy avionics display controllers requiring stable component supply and long-term lifecycle support.
Supply support for IDT71024S20TY 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 IoT applications.
The IDT71024S20TY belongs to Renesas' legacy high-speed parallel SRAM product line, designed specifically for 5 V embedded systems requiring zero-refresh, TTL-compatible memory with industrial temperature resilience and long-lifecycle availability.
FAQ
What is the maximum operating frequency supported by the IDT71024S20TY?
The IDT71024S20TY does not use a clock and therefore has no operating frequency specification. Its performance is defined by timing parameters: maximum read/write cycle time (tRC) is 20 ns, corresponding to an effective maximum burst rate of 50 MHz in ideal conditions. System-level throughput depends on bus arbitration, address setup, and controller timing margins-not a clock signal.
Does the IDT71024S20TY require external refresh circuitry?
No, the IDT71024S20TY is a fully static RAM and requires no external refresh circuitry or periodic access to retain data. Its CMOS latch-based memory cells maintain state indefinitely as long as VCC is applied within specification (4.5 V to 5.5 V) and ambient temperature remains within the industrial range (–40°C to +85°C).
Can the IDT71024S20TY be used in a 3.3 V system?
No-the IDT71024S20TY is specified only for +5.0 V ±10% operation (4.5 V to 5.5 V). Its input thresholds (VIH ≥ 2.2 V, VIL ≤ 0.8 V) and output drive levels are optimized for 5 V TTL logic. Using it with a 3.3 V supply violates absolute maximum ratings and will result in undefined behavior or permanent damage.
What is the function of the CS2 pin on the IDT71024S20TY?
The CS2 pin on the IDT71024S20TY is an active-high chip select that-when asserted high alongside CS1 low-enables memory access. It provides hierarchical decoding flexibility: CS1 alone can disable the device (high-Z), while CS2 allows fine-grained bank selection in multi-SRAM configurations without changing address decode logic.
Is the IDT71024S20TY RoHS compliant?
Yes, the IDT71024S20TY is a green (RoHS-compliant) device, meeting EU Directive 2011/65/EU. The "G" suffix in the orderable part number (e.g., IDT71024S20TYG) explicitly denotes compliance with lead-free and halogen-free manufacturing standards, verified per Renesas' material declarations.
IDT71024S20TY 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:
- 20ns
- Access Time:
- 20 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
IDT71024S20TY FAQ
1.How can I place an order for IDT71024S20TY through Aetrix?
Please submit a Request for Quotation (RFQ) for IDT71024S20TY 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 IDT71024S20TY reliable?
The price and inventory of IDT71024S20TY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IDT71024S20TY is usually 5 days.
3.What payment methods are accepted for IDT71024S20TY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IDT71024S20TY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IDT71024S20TY?
IDT71024S20TY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IDT71024S20TY 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 IDT71024S20TY?
For technical support, including IDT71024S20TY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IDT71024S20TY requirements.
6.How does Aetrix verify that IDT71024S20TY is sourced from the original manufacturer or authorized distributors?
All IDT71024S20TY 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 IDT71024S20TY meets industry standards.
7.What is the process for return or replacement of IDT71024S20TY?
All IDT71024S20TY units undergo pre-shipment inspection (PSI). If there is an issue with IDT71024S20TY, 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 IDT71024S20TY part is unused and in its original packaging.
Return procedure for IDT71024S20TY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
IDT71024S20TY 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
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
Microchip Technology
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24AA02UIDT-I/OT
Microchip Technology
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AT24C08C-STUM-T
Microchip Technology
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