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Renesas IDT71024MS15Y
- Part No.:
- IDT71024MS15Y
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 32-BSOJ (0.400", 10.16mm Width)
- Datasheet:
-
IDT71024MS15Y.pdf
- Description:
- IC SRAM 1MBIT PARALLEL 32SOJ
- Quantity:
- Payment:
- Shipping:
Inventory:1,238
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Product details
Overview
IDT71024MS15Y 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 selects (CS1/CS2), TTL-compatible bidirectional I/O, and output enable (OE) for fast 7 ns read access - used in real-time control buffers, legacy industrial PLC memory expansion, and embedded instrumentation data logging.
For engineers reviewing the IDT71024MS15Y datasheet, IDT71024MS15Y pinout, IDT71024MS15Y application, or IDT71024MS15Y equivalent, key selection considerations include its 15 ns tAA/tRC timing, industrial-grade reliability, SOJ-32 package compatibility, low 40 mA ISB standby current, and direct replacement capability in legacy 5 V SRAM designs requiring no refresh or clocking.
Technical Context
The IDT71024MS15Y implements fully static asynchronous operation with no clocks or refresh cycles required. Its architecture supports independent chip select control (CS1 active-low, CS2 active-high) and separate OE-driven output gating, enabling flexible memory mapping in multi-bus systems.
All inputs and outputs are TTL-compatible with VIH ≥ 2.2 V and VIL ≤ 0.8 V at VCC = 5.0 V ± 0.5 V. The device draws 155 mA dynamic current (ICC) under maximum cycling conditions and drops to 10 mA full standby current (ISB1) when both CS1 ≥ VHC and CS2 ≤ VLC.
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 - determines minimum read latency in CPU or FPGA memory interfaces |
| Cycle Time (tRC) | 15 ns max - sets maximum sustained read/write throughput rate |
| Supply Voltage | 5.0 V ± 0.5 V - compatible with legacy 5 V logic families without level shifting |
| Operating Temperature | –40°C to +85°C - qualified for industrial control and transportation electronics |
| Standby Current (ISB1) | 10 mA max - enables low-power hold mode during processor sleep or bus arbitration |
| I/O Capacitance | CI/O ≤ 8 pF - minimizes signal integrity impact on high-speed address/data buses |
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) selecting 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 | Chip Select 1 (Active Low) | Primary enable; must be LOW with CS2 HIGH for valid read/write operations |
| CS2 | Chip Select 2 (Active High) | Secondary enable; complements CS1 to form AND-gated chip enable logic |
| WE | Write Enable | LOW initiates write cycle; HIGH enables read or high-impedance output state |
| OE | Output Enable | LOW enables output drivers; allows output gating independent of CS/WE |
| VCC | Power Supply | +5 V supply pin; decoupling required within 10 mm of pin per layout guidelines |
| GND | Ground | Signal reference plane; requires low-inductance connection to system ground |
Key Features
| Feature | Design Value |
|---|---|
| Fast Output Enable | tOE = 7 ns max - enables precise timing control for burst-mode reads in microcontroller peripherals |
| Dual Chip Select Logic | CS1 (active-low) + CS2 (active-high) - supports hierarchical memory decoding without external logic |
| Low-Power Standby Modes | ISB = 40 mA (TTL-level deselect), ISB1 = 10 mA (CMOS-level full standby) - reduces system power in idle states |
| TTL-Compatible I/O | VIH ≥ 2.2 V, VIL ≤ 0.8 V - ensures interoperability with 5 V microcontrollers, FPGAs, and ASICs |
| No Refresh Required | Fully static CMOS design - eliminates DRAM controller overhead and timing complexity |
Applications
| Industrial PLC Data Buffer | Legacy Test Equipment Memory |
|---|---|
|
Use Scenario: Storing real-time sensor samples and control setpoints in programmable logic controllers operating in factory-floor environments. IC Role / Device Role / Timing Role: Byte-accessible scratchpad memory interfaced directly to 8-bit microcontrollers via parallel bus; provides deterministic 15 ns read latency. Use Value: Industrial temperature rating (–40°C to +85°C) and 10 mA ISB1 ensure reliable operation during thermal cycling and extended unpowered storage. |
Use Scenario: Expanding onboard RAM in automated test equipment for waveform capture and pattern generation buffers. IC Role / Device Role / Timing Role: High-speed static RAM replacing slower EPROM or battery-backed RAM in legacy 5 V instrument designs. Use Value: 15 ns tAA and tRC support sustained 66.7 MHz bus transfers, enabling real-time digitizer buffering without wait states. |
| Avionics Maintenance Terminal | Medical Imaging Control Board |
|
Use Scenario: Storing configuration tables and diagnostic logs in portable avionics line-replaceable units (LRUs) certified to DO-160 environmental stress levels. IC Role / Device Role / Timing Role: Non-refreshing memory for deterministic boot-time parameter loading and fault history retention. Use Value: SOJ-32 package and 300-mil width match legacy PCB footprints; green (Pb-free) variant complies with aerospace RoHS requirements. |
Use Scenario: Supporting real-time image processing pipelines in ultrasound or X-ray control boards where memory coherency and predictability are critical. IC Role / Device Role / Timing Role: Dual-CS-controlled memory enabling isolated buffer partitioning between acquisition and display subsystems. Use Value: Independent OE pin allows concurrent CPU access and DMA engine reads without bus contention or added glue logic. |
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-45ZSXI | 128K × 8, 45 ns access, 3.3 V supply, SOJ-32 | Requires voltage translation for 5 V systems; slower timing but lower power | Select only if migrating to 3.3 V architecture and timing budget allows ≥45 ns latency |
| AS6C1008-15PIN | 128K × 8, 15 ns access, 5 V supply, PDIP-32 and SOJ-32 options | Same speed and voltage, but PDIP variant available for prototyping; different manufacturer qualification | Drop-in replacement for IDT71024MS15Y in SOJ-32 layouts; verify ISB1 (15 mA vs. 10 mA) in ultra-low-power modes |
Compared with CY62128EV30LL-45ZSXI and AS6C1008-15PIN, the IDT71024MS15Y delivers tighter 15 ns timing at 5 V with lowest full-standby current (10 mA), making it optimal for legacy industrial systems where voltage compatibility and power-constrained hold modes are critical.
Availability
IDT71024MS15Y is available at Aetrix Electronics and suitable for industrial PLC data buffering, legacy test equipment memory expansion, and avionics maintenance terminal configuration storage requiring stable component supply across long-lifecycle programs.
Supply support for IDT71024MS15Y 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 IDT71024MS15Y belongs to Renesas' legacy high-speed parallel SRAM product line, designed specifically for drop-in replacement of aging 5 V memory in industrial control, instrumentation, and communications equipment.
FAQ
What is the operating voltage range for the IDT71024MS15Y?
The IDT71024MS15Y operates at a nominal supply voltage of 5.0 V with a specified range of 4.5 V to 5.5 V. This 5 V tolerance ensures compatibility with legacy TTL and CMOS logic families without requiring level-shifting circuitry. All DC and AC parameters in the datasheet - including VIH, VIL, ICC, and tAA - are guaranteed across this full voltage range at industrial temperatures.
Does the IDT71024MS15Y require a clock or refresh signal?
No, the IDT71024MS15Y uses fully static CMOS circuitry and requires no clock, refresh, or periodic access to retain data. It maintains stored values indefinitely as long as VCC remains within specification and the device stays powered. This eliminates timing-critical refresh management found in DRAM, simplifying system design for microcontrollers and FPGAs interfacing directly to the parallel bus.
What is the function of the CS1 and CS2 pins on the IDT71024MS15Y?
CS1 (active-low) and CS2 (active-high) together form a two-input AND gate for chip enable: the IDT71024MS15Y is selected only when CS1 is LOW and CS2 is HIGH. This dual-control scheme allows hierarchical memory decoding - for example, using CS2 to select a memory bank and CS1 to enable individual devices - reducing external logic in multi-SRAM systems.
Can the IDT71024MS15Y be used in place of faster or slower speed grades like IDT71024MS12Y or IDT71024MS20Y?
Yes, the IDT71024MS15Y is pin-compatible with other speed grades in the same SOJ-32 package (e.g., IDT71024MS12Y and IDT71024MS20Y), sharing identical pinout, voltage, and interface signaling. However, timing margins differ: substituting the 15 ns grade for a 12 ns part may limit maximum bus frequency, while using it in place of a 20 ns part improves timing slack but offers no functional change.
Is the IDT71024MS15Y compliant with RoHS and lead-free requirements?
Yes, the IDT71024MS15Y is a green (lead-free) device per Renesas' ordering nomenclature - the "G" suffix in the part number confirms compliance with RoHS Directive 2011/65/EU. It uses matte tin terminations and Pb-free molding compound, and is rated for reflow soldering profiles up to 260°C peak temperature, supporting modern lead-free assembly processes.
IDT71024MS15Y Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 32-BSOJ (0.400", 10.16mm 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
IDT71024MS15Y FAQ
1.How can I place an order for IDT71024MS15Y through Aetrix?
Please submit a Request for Quotation (RFQ) for IDT71024MS15Y 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 IDT71024MS15Y reliable?
The price and inventory of IDT71024MS15Y are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IDT71024MS15Y is usually 5 days.
3.What payment methods are accepted for IDT71024MS15Y?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IDT71024MS15Y transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IDT71024MS15Y?
IDT71024MS15Y orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IDT71024MS15Y 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 IDT71024MS15Y?
For technical support, including IDT71024MS15Y datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IDT71024MS15Y requirements.
6.How does Aetrix verify that IDT71024MS15Y is sourced from the original manufacturer or authorized distributors?
All IDT71024MS15Y 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 IDT71024MS15Y meets industry standards.
7.What is the process for return or replacement of IDT71024MS15Y?
All IDT71024MS15Y units undergo pre-shipment inspection (PSI). If there is an issue with IDT71024MS15Y, 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 IDT71024MS15Y part is unused and in its original packaging.
Return procedure for IDT71024MS15Y:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
IDT71024MS15Y 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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AT24C02C-SSHM-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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24LC01BT-I/SN
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24AA02UIDT-I/OT
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AT24C08C-STUM-T
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