My Inquiry
My Account
Renesas 71024S20TYG8
- Part No.:
- 71024S20TYG8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 32-BSOJ (0.300", 7.62mm Width)
- Datasheet:
-
71024S20TYG8.pdf
- Description:
- IC SRAM 1MBIT PARALLEL 32SOJ
- Quantity:
- Payment:
- Shipping:
Inventory:2,777
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
71024S20TYG8 from Renesas Electronics is a 128K × 8-bit (1 Mbit) high-speed CMOS static RAM with 20 ns access and cycle times, TTL-compatible I/O, dual chip select (CS1/CS2), and output enable (OE). It operates from a single +5.0 V ±10% supply across commercial temperature range (0°C to +70°C), packaged in 32-pin 300-mil plastic SOJ (PJG32), and targets memory buffering in legacy industrial controllers and instrumentation systems.
For engineers reviewing the 71024S20TYG8 datasheet, 71024S20TYG8 pinout, 71024S20TYG8 application, or 71024S20TYG8 equivalent, key selection considerations include its 20 ns read/write timing, standby current of 40 mA (ISB) and 10 mA (ISB1), TTL-level interface compatibility, and SOJ-32 footprint - critical for drop-in replacement in aging 5 V microprocessor bus designs.
Technical Context
The 71024S20TYG8 implements fully static asynchronous operation with no clocks or refresh required. Its bidirectional I/O architecture supports direct connection to 8-bit data buses, while independent CS1/CS2 enables hierarchical memory decoding in multi-chip systems.
Timing control relies on overlapping active-low WE with active CS1 (low) and CS2 (high); OE allows output gating without affecting internal state. All inputs meet TTL voltage thresholds (VIH ≥ 2.2 V, VIL ≤ 0.8 V), ensuring interoperability with legacy logic families.
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 - defines minimum address-to-data delay in read cycles |
| Cycle Time (tRC) | 20 ns max - sets shortest interval between successive read/write operations |
| Supply Voltage | +5.0 V ±10% - compatible with standard 5 V TTL/CMOS logic rails |
| Operating Temperature | 0°C to +70°C - validated for commercial-grade embedded systems |
| Standby Current (ISB) | 40 mA max - power draw when CS1 ≥ VIH or CS2 ≤ VIL, outputs high-Z |
| Full Standby (ISB1) | 10 mA max - achieved only when CS1 ≥ VHC (CMOS high) and CS2 ≤ VLC (CMOS low) |
Pinout & Package
71024S20TYG8 is housed in a 32-pin plastic SOJ (Small Outline J-lead) package, 300 mil body width (PJG32), with gull-wing J-leads suitable for wave or reflow soldering. Pin 1 is marked by a notch or dot; top-view orientation matches JEDEC MS-012.
| 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 I/O | 8-bit data path; direction controlled by WE and CS states |
| CS1, CS2 | Chip Select Inputs | Active-low CS1 and active-high CS2 must both be asserted for device enable |
| OE | Output Enable | Active-low; gates outputs to high-Z without affecting internal memory state |
| WE | Write Enable | Active-low; initiates write when CS1/CS2 are active; controls I/O direction |
| VCC, GND | Power Supply | Single +5 V supply and ground; decoupling required per high-speed RAM layout rules |
| NC | No Connect | Pin 1 is NC - must remain unconnected per datasheet |
Key Features
| Feature | Design Value |
|---|---|
| 20 ns access/cycle timing | Enables integration into 50 MHz CPU bus systems with no wait states |
| Dual chip select (CS1/CS2) | Supports banked memory decoding and partial address decoding in multi-SRAM systems |
| TTL-compatible I/O levels | Eliminates level-shifting requirements when interfacing with 74LS/74F logic or microcontrollers |
| Two standby modes (ISB/ISB1) | Reduces power to 10 mA in deep sleep (ISB1) when both CS signals meet CMOS thresholds |
| SOJ-32 (300-mil) package | Provides proven reliability and repairability in through-hole and surface-mount legacy PCBs |
Applications
| Industrial PLC Memory Buffer | Legacy Test Equipment Data Cache |
|---|---|
Use Scenario: Storing real-time I/O scan data and program variables in programmable logic controllers based on 80C188 or Z80 derivatives. IC Role / Device Role / Timing Role: Byte-addressable SRAM providing zero-wait-state read/write access to CPU via 8-bit data bus and discrete address/control lines. Use Value: 20 ns timing ensures full-speed operation with 50 MHz bus clocks; SOJ-32 footprint allows field replacement without redesign. | Use Scenario: Holding waveform samples and calibration tables in benchtop oscilloscopes and signal generators from the 1990s–2000s era. IC Role / Device Role / Timing Role: Non-refreshing memory buffer for ADC/DAC data transfer, synchronized by discrete control logic (not clocked interface). Use Value: ISB1 standby current of 10 mA extends uptime in battery-backed modules; TTL compatibility avoids interface glue logic. |
| Medical Diagnostic Instrument RAM | Avionics Display Controller Frame Buffer |
Use Scenario: Temporary storage of image buffers and configuration parameters in ultrasound or ECG front-end units requiring long-term reliability. IC Role / Device Role / Timing Role: Static memory node in safety-critical subsystems where DRAM refresh failure is unacceptable. Use Value: Fully static operation eliminates timing-critical refresh circuitry; commercial-grade temp range suffices for climate-controlled enclosures. | Use Scenario: Supporting rasterized display updates in cockpit multifunction displays using discrete video timing generators. IC Role / Device Role / Timing Role: Dual-port-capable (via external control) frame buffer for overlay graphics and status text rendering. Use Value: Bidirectional I/O and fast OE (8 ns tOE) allow rapid pixel block transfers without bus contention. |
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 | 45 ns access time, 3.3 V supply, TSOP-32 package | Requires level translation and voltage regulation for 5 V systems; smaller footprint but not drop-in | Select only if migrating to 3.3 V architecture and accepting slower timing |
| AS6C4008-20TIN | 20 ns access, +5 V supply, SOJ-32 (Pb-free), same pinout | Direct physical and electrical replacement; identical timing and DC specs per datasheet | Preferred for RoHS-compliant replacements where green compliance is mandatory |
Compared with CY62128EV30LL-45ZSXIT, 71024S20TYG8 delivers 2.25× faster access at 5 V without voltage conversion; versus AS6C4008-20TIN, it shares identical speed and package but differs in manufacturer-specific reliability testing and qualification scope.
Availability
71024S20TYG8 is available at Aetrix Electronics and suitable for industrial PLC memory expansion, legacy test equipment refurbishment, and medical diagnostic instrument repair requiring stable component supply and long-lifecycle support.
Supply support for 71024S20TYG8 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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, power, and memory solutions for industrial, automotive, and infrastructure markets.
The IDT71024 family - acquired from Integrated Device Technology - was designed for cost-effective, high-reliability 5 V parallel SRAM applications in legacy computing and control systems where simplicity, stability, and long-term availability are prioritized over density or low voltage.
FAQ
What is the operating voltage range for the 71024S20TYG8?
The 71024S20TYG8 operates from a single +5.0 V supply with a tolerance of ±10%, meaning the valid range is 4.5 V to 5.5 V. This specification is guaranteed across the full commercial temperature range (0°C to +70°C) and aligns with standard TTL logic supply requirements. The 71024S20TYG8 does not support 3.3 V or mixed-voltage operation.
Does the 71024S20TYG8 require a clock or refresh signal?
No, the 71024S20TYG8 uses fully static CMOS circuitry and requires no clock, refresh, or periodic access to retain data. It maintains stored bits indefinitely as long as VCC is applied within specification and ambient temperature remains within 0°C to +70°C. This eliminates timing-critical support circuitry needed for DRAM, making the 71024S20TYG8 ideal for simple, deterministic memory subsystems.
What is the function of the NC pin on the 71024S20TYG8?
Pin 1 of the 71024S20TYG8 is designated NC (No Connect) and must remain unconnected in the PCB layout. It is not internally bonded and serves no electrical function. Connecting this pin may cause undefined behavior or damage. The 71024S20TYG8 datasheet explicitly prohibits termination of this pin, and its presence is due to package standardization across the IDT71024 family.
How does the dual chip select (CS1/CS2) logic work on the 71024S20TYG8?
The 71024S20TYG8 activates only when CS1 is LOW and CS2 is HIGH simultaneously. If either CS1 is HIGH or CS2 is LOW, the device enters standby mode (ISB), placing all I/O pins in high-impedance state. This two-signal scheme enables flexible memory banking and partial address decoding - for example, using CS2 as a higher-order address decode output and CS1 as a lower-range selector - without external logic gates.
Is the 71024S20TYG8 RoHS compliant and lead-free?
Yes, the 71024S20TYG8 is a green-part variant indicated by the "G" suffix in its orderable part number and conforms to RoHS Directive 2011/65/EU. It uses lead-free terminations and halogen-free molding compound. The "8" suffix denotes tape-and-reel packaging, and full compliance documentation is available from Renesas upon request for the 71024S20TYG8.
71024S20TYG8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 32-BSOJ (0.300", 7.62mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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
71024S20TYG8 FAQ
1.How can I place an order for 71024S20TYG8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 71024S20TYG8 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 71024S20TYG8 reliable?
The price and inventory of 71024S20TYG8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 71024S20TYG8 is usually 5 days.
3.What payment methods are accepted for 71024S20TYG8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 71024S20TYG8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 71024S20TYG8?
71024S20TYG8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 71024S20TYG8 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 71024S20TYG8?
For technical support, including 71024S20TYG8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 71024S20TYG8 requirements.
6.How does Aetrix verify that 71024S20TYG8 is sourced from the original manufacturer or authorized distributors?
All 71024S20TYG8 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 71024S20TYG8 meets industry standards.
7.What is the process for return or replacement of 71024S20TYG8?
All 71024S20TYG8 units undergo pre-shipment inspection (PSI). If there is an issue with 71024S20TYG8, 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 71024S20TYG8 part is unused and in its original packaging.
Return procedure for 71024S20TYG8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
71024S20TYG8 Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
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
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
