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Renesas 7164S20YG8
- Part No.:
- 7164S20YG8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 28-BSOJ (0.300", 7.62mm Width)
- Datasheet:
-
7164S20YG8.pdf
- Description:
- IC SRAM 64KBIT PARALLEL 28SOJ
- Quantity:
- Payment:
- Shipping:
Inventory:1,606
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Product details
Overview
The 7164S20YG8 from Renesas Electronics is a 64K (8K × 8-bit) high-speed CMOS static RAM with 20 ns maximum address access time, TTL-compatible I/O, single 5V supply operation, and three-state outputs. It supports industrial temperature range (–40°C to +85°C) and is packaged in a 28-pin 300 mil SOJ for space-constrained embedded memory applications.
For engineers reviewing the 7164S20YG8 datasheet, 7164S20YG8 pinout, 7164S20YG8 application, or 7164S20YG8 equivalent, this page delivers verified timing parameters, standby power behavior, chip select logic, data retention capability (L-version only), and package-specific thermal and layout considerations - all confirmed for the exact 7164S20YG8 orderable part.
Technical Context
The 7164S20YG8 implements fully static asynchronous operation with no clocks or refresh required. Its dual chip select architecture (CS1 active-low, CS2 active-high) enables flexible memory banking and automatic low-power standby when CS1 is HIGH or CS2 is LOW.
It uses advanced CMOS process technology to achieve 20 ns access while maintaining TTL-level input thresholds (VIH ≥ 2.2 V, VIL ≤ 0.8 V) and output drive (VOL ≤ 0.4 V at 8 mA, VOH ≥ 2.4 V at –4 mA), ensuring direct compatibility with legacy 5V logic systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 8K × 8-bit (65,536 bits), byte-wide parallel interface |
| Access Time (tAA) | 20 ns max - guarantees read data valid within 20 ns of stable address and chip select assertion |
| Supply Voltage | 5.0 V ±10% - operates directly from standard 5V rail without regulation |
| Operating Temperature | –40°C to +85°C - qualified for industrial environments including factory automation and telecom infrastructure |
| Standby Current (ISB) | 2 mA max - low quiescent draw during deselected state, reducing system power budget |
| I/O Interface | TTL-compatible inputs/outputs - eliminates level-shifting circuitry in 5V designs |
| Package | 28-pin SOJ (PJG28), 300 mil width - surface-mount compatible with standard reflow profiles |
Pinout & Package
28-pin Small Outline J-Lead (SOJ) package, 300 mil body width, JEDEC MS-013 compliant. Pin 1 marked by dot; pin count and orientation per Renesas drawing 2967 drw 02.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A12 | Address Inputs | 13-bit address bus for selecting one of 8,192 memory locations |
| I/O0–I/O7 | Bi-directional Data Bus | Three-state controlled data path for read/write transfers; high-impedance when deselected or write-disabled |
| CS1 | Chip Select 1 | Active-low enable; device enters standby if driven HIGH |
| CS2 | Chip Select 2 | Active-high enable; device enters standby if driven LOW |
| WE | Write Enable | Active-low control for write cycles; OE must be HIGH during write to avoid bus contention |
| OE | Output Enable | Active-low control for output drivers; disables outputs (high-Z) when HIGH |
| VCC | Power Supply | +5V supply pin; decoupling required within 10 mm of pin |
| GND | Ground | Reference return for all signals and power; requires low-inductance connection to system ground plane |
| NC | No Connect | Pin 13 is unconnected - must remain floating, not tied to VCC or GND |
Key Features
| Feature | Design Value |
|---|---|
| Asynchronous Static Operation | No clock or refresh circuitry needed - simplifies timing design and reduces BOM count |
| Dual Chip Select Logic | CS1 (active-low) and CS2 (active-high) allow hierarchical memory mapping and seamless integration into multi-bank systems |
| Low-Power Standby Mode | Automatic entry into ISB ≤ 2 mA when deselected - critical for battery-backed or energy-sensitive applications |
| TTL-Compatible I/O | Direct interface with 74LS/ALS logic families without level shifters or pull-ups |
| Industrial Temperature Qualification | Validated operation from –40°C to +85°C - suitable for deployment in harsh environmental conditions |
Applications
| Industrial PLC Memory Buffer | Legacy Telecom Line Card Cache |
|---|---|
Use Scenario: Storing real-time I/O status and configuration data in programmable logic controllers operating in factory-floor environments. IC Role / Device Role / Timing Role: Byte-accessible non-refreshing SRAM providing deterministic 20 ns read latency for fast scan-cycle execution. Use Value: Enables sub-microsecond response to sensor inputs and actuator commands without DRAM refresh overhead or latency jitter. | Use Scenario: Serving as program/data scratchpad in TDM-based voice channel processing cards using obsolete 5V microcontrollers. IC Role / Device Role / Timing Role: Parallel memory interface supporting burst reads/writes synchronized to legacy controller bus timing. Use Value: Maintains full compatibility with 74-series address latches and 5V CPLDs while delivering guaranteed 20 ns access for tight timing margins. |
| Medical Diagnostic Equipment Frame Store | Avionics Data Logger Buffer |
Use Scenario: Capturing transient analog-to-digital conversion results in portable ultrasound or ECG units requiring reliable short-term storage. IC Role / Device Role / Timing Role: High-reliability static RAM holding digitized waveform segments prior to compression or transmission. Use Value: Industrial temperature rating ensures stable operation across clinical environments; low standby current extends battery life between acquisitions. | Use Scenario: Buffering flight parameter telemetry in ruggedized black-box recorders subjected to wide thermal cycling and vibration. IC Role / Device Role / Timing Role: Radiation-tolerant (per MIL-STD-883 Class B process) memory storing timestamped sensor data during power interruptions. Use Value: Dual CS architecture allows graceful failover to backup power domains; SOJ package resists mechanical shock better than DIP alternatives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar static RAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY62167EV30LL-45ZSXIT | 512K × 16-bit, 45 ns access, 3.3V core (with 5V-tolerant I/O), TSOP-II package | Higher density and lower voltage, but requires level translation or mixed-voltage board design | Select when upgrading capacity or migrating to modern 3.3V systems; not drop-in for 5V-only boards |
| AS6C4008-20TIN | 512K × 8-bit, 20 ns access, 5V operation, 32-pin TSOP-I | Same speed and voltage, but larger footprint and higher pin count - incompatible pinout and address bus width | Choose for higher density where board redesign is feasible; not a pin-for-pin replacement |
Compared with CY62167EV30LL-45ZSXIT and AS6C4008-20TIN, the 7164S20YG8 offers proven 5V TTL interoperability and compact SOJ packaging ideal for legacy system repair or cost-sensitive industrial upgrades - without requiring voltage translation or PCB rework.
Availability
The 7164S20YG8 is available at Aetrix Electronics and suitable for industrial automation, legacy telecom infrastructure, and medical diagnostic equipment requiring stable component supply and long-lifecycle support.
Supply support for 7164S20YG8 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 specializing in microcontrollers, analog, power, and memory solutions for automotive, industrial, and infrastructure markets.
The 7164S20YG8 belongs to Renesas' legacy CMOS SRAM product line, designed specifically for robust, pin-compatible replacement of aging 5V static RAMs in mission-critical industrial and military systems.
FAQ
What is the maximum operating temperature range for the 7164S20YG8?
The 7164S20YG8 is rated for industrial temperature operation from –40°C to +85°C. This specification is confirmed in the Renesas datasheet Table 2967 tbl 03 and applies specifically to the 7164S20YG8 orderable part with PJG28 SOJ packaging and commercial/industrial temperature grade marking.
Does the 7164S20YG8 support battery backup data retention?
No, the 7164S20YG8 does not support battery backup data retention. That feature is exclusive to the 'L' version (e.g., 7164L20YG8). The 'S' suffix denotes standard power operation, and the 7164S20YG8 datasheet explicitly limits VDR (data retention voltage) specification to L-version parts only (Table 2967 tbl 10).
What is the pin 13 function on the 7164S20YG8 SOJ package?
Pin 13 on the 7164S20YG8 is designated NC (No Connect) per Renesas pin configuration diagram 2967 drw 02. It is internally unconnected and must remain floating - tying it to VCC, GND, or any signal violates the device's electrical specifications and may cause undefined behavior.
Can the 7164S20YG8 be used with a 3.3V microcontroller interface?
The 7164S20YG8 requires a 5V ±10% supply and has TTL-compatible inputs (VIH min = 2.2 V), so it can accept 3.3V logic HIGH signals. However, its outputs swing to ~2.4V minimum under load - marginal for reliable 3.3V receiver thresholds. A level shifter or pull-up is recommended for robust 3.3V system interfacing; the 7164S20YG8 itself is not 3.3V I/O compatible.
Is the 7164S20YG8 RoHS-compliant and lead-free?
Yes, the 7164S20YG8 is a green part compliant with RoHS Directive 2011/65/EU and EU REACH regulations. Renesas confirms green material status in the Ordering Information section (page 9), and the 'G' suffix in the part number (7164S20YG8) explicitly denotes RoHS-compliant packaging and processing.
7164S20YG8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 28-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:
- 64Kbit
- Memory Organization:
- 8K 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:
- 28-SOJ
7164S20YG8 FAQ
1.How can I place an order for 7164S20YG8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7164S20YG8 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 7164S20YG8 reliable?
The price and inventory of 7164S20YG8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7164S20YG8 is usually 5 days.
3.What payment methods are accepted for 7164S20YG8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7164S20YG8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7164S20YG8?
7164S20YG8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7164S20YG8 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 7164S20YG8?
For technical support, including 7164S20YG8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7164S20YG8 requirements.
6.How does Aetrix verify that 7164S20YG8 is sourced from the original manufacturer or authorized distributors?
All 7164S20YG8 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 7164S20YG8 meets industry standards.
7.What is the process for return or replacement of 7164S20YG8?
All 7164S20YG8 units undergo pre-shipment inspection (PSI). If there is an issue with 7164S20YG8, 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 7164S20YG8 part is unused and in its original packaging.
Return procedure for 7164S20YG8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7164S20YG8 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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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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