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Renesas 7164S20TPGI
- Part No.:
- 7164S20TPGI
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 28-DIP (0.300", 7.62mm)
- Datasheet:
-
7164S20TPGI.pdf
- Description:
- IC SRAM 64KBIT PARALLEL 28DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,645
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Product details
Overview
7164S20TPGI 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, three-state outputs, and industrial temperature range (–40°C to +85°C). It operates from a single 5V supply and supports low-power standby mode via chip select control, used in real-time data buffering for industrial controllers and legacy embedded systems.
For engineers reviewing the 7164S20TPGI datasheet, 7164S20TPGI pinout, 7164S20TPGI application, or 7164S20TPGI equivalent, key selection criteria include verified 20 ns read/write timing, industrial-grade reliability, 28-pin PDIP package compatibility, and battery backup capability (not supported in S-version), critical for deterministic memory subsystems in avionics test equipment and programmable logic controllers.
Technical Context
The 7164S20TPGI implements fully static asynchronous operation-no clocks or refresh required-and uses dual chip select (CS1/CS2) logic where CS2 powers down CS1 but not vice versa. Its control architecture enables automatic entry into low-power standby when CS1 is HIGH or CS2 is LOW, reducing active current to ≤20 mA and standby current to ≤5 µA at 5V.
It features TTL-compatible input thresholds (VIH ≥ 2.2 V, VIL ≤ 0.8 V), output drive strength of ±8 mA (IOL/IOH), and guaranteed data retention during power loss only in L-versions-not applicable to the S-series 7164S20TPGI. All timing parameters-including tAA = 20 ns, tRC = 20 ns, and tWP = 15 ns-are specified across the full industrial temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 8K × 8-bit (65,536 bits), enabling byte-wide data bus interfacing without external demultiplexing |
| Access Time (tAA) | 20 ns max - guarantees deterministic read latency for cycle-accurate timing in microcontroller co-processor interfaces |
| Supply Voltage | 4.5 V to 5.5 V - compatible with standard 5V TTL logic rails and tolerant of ±10% regulation variation |
| Operating Temperature | –40°C to +85°C - qualified for industrial environments including factory automation and railway signaling |
| Package | 28-pin plastic DIP (PTG28), 0.6-inch width - supports through-hole prototyping and legacy PCB rework |
| Power Consumption | ICC ≤ 20 mA (active), ISB ≤ 5 µA (standby) - enables energy-efficient operation in always-on monitoring systems |
| I/O Interface | TTL-compatible inputs and three-state outputs - eliminates level-shifting circuitry when interfacing with 80Cxx, Z80, or 68000-family processors |
Pinout & Package
28-pin plastic dual in-line package (PDIP), 0.6-inch body width, standard through-hole mounting with pin 1 marked by dot orientation per Renesas drawing 2967 drw 02.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A12 | Address Inputs | 13-bit address bus supporting full 8K-word decoding; no internal latching - requires stable address before CS activation |
| I/O0–I/O7 | Bidirectional Data Bus | Three-state CMOS outputs with ±8 mA drive; high-impedance when CS inactive or OE HIGH during write |
| CS1, CS2 | Chip Select Inputs | Active-LOW CS1 and active-HIGH CS2 enable hierarchical memory mapping; CS2 override disables CS1 |
| WE | Write Enable | Active-LOW control for write cycles; overlapping WE LOW with CS1 LOW/CS2 HIGH initiates write per AC timing waveforms |
| OE | Output Enable | Active-LOW control for read data assertion; independent of WE, allowing read-modify-write sequences |
| VCC, GND | Power Supply | Single 5V supply with dedicated ground pin; decoupling recommended within 1 cm of VCC/GND pair |
Key Features
| Feature | Design Value |
|---|---|
| Fully static asynchronous operation | Eliminates need for clock generation or refresh circuitry, simplifying system timing design for microprocessor-based controllers |
| Dual chip select with priority logic | CS2 can force standby regardless of CS1 state, enabling flexible memory banking and power-gating in multi-SRAM systems |
| TTL-compatible voltage thresholds | Direct interface with legacy 5V logic families without level shifters, reducing BOM count and signal integrity risk |
| Guaranteed 20 ns performance over full temperature range | Ensures consistent timing margin in industrial thermal environments where ambient swings exceed consumer-grade specs |
| Low standby current (≤5 µA) | Supports battery-backed operation in maintenance mode for systems requiring nonvolatile context preservation |
Applications
| Industrial PLC Data Buffer | Avionics Test Equipment Memory |
|---|---|
Use Scenario: Real-time acquisition of sensor data streams in programmable logic controllers with deterministic scan-cycle deadlines. IC Role / Device Role / Timing Role: High-speed parallel SRAM providing zero-wait-state read/write access for CPU instruction/data caching and I/O register shadowing. Use Value: 20 ns tAA ensures sub-microsecond response to interrupt-driven I/O events, meeting IEC 61131-3 cycle time requirements under worst-case thermal conditions. | Use Scenario: Storing calibration tables and transient waveform snapshots in airborne diagnostic test sets operating in extended temperature zones. IC Role / Device Role / Timing Role: Standalone static RAM interfaced to FPGA-based bus controllers for burst-mode data capture and replay. Use Value: Industrial-grade temperature qualification (–40°C to +85°C) and MIL-STD-883-compliant manufacturing process ensure reliability during altitude-induced thermal cycling. |
| Railway Signaling Controller | Legacy Medical Imaging Subsystem |
Use Scenario: Fault-tolerant memory storage for interlocking logic states in wayside signaling cabinets exposed to outdoor rail yard environments. IC Role / Device Role / Timing Role: Primary working memory for safety-critical microcontrollers executing SIL-2 certified firmware. Use Value: Dual CS architecture allows hot-swap isolation of memory banks during field upgrades, maintaining operational continuity per EN 50126/128/129 standards. | Use Scenario: Frame buffer memory in ultrasound front-end processors where EMI resilience and long-term component availability are mandatory. IC Role / Device Role / Timing Role: Asynchronous SRAM serving as pixel line buffer between ADC and DSP pipelines in analog-domain imaging chains. Use Value: 28-pin PDIP package enables manual rework on aging PCBs, while 5V TTL compatibility avoids redesign of legacy 1990s-era backplane interfaces. |
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 | 32M-bit density, 45 ns access, 3.3V core, SOIC-44 package | Higher density and lower voltage, but incompatible pinout and voltage domain | Select only if migrating to modern 3.3V systems with PCB redesign and density scaling requirements |
| IS61LV25616AL-10TLI | 256K × 16-bit organization, 10 ns access, 3.3V supply, TQFP-48 | Wider data bus, faster speed, different voltage and packaging - no drop-in replacement | Choose when upgrading throughput in new designs where footprint and voltage compliance allow full redesign |
Compared with CY62167EV30LL-45ZSXIT and IS61LV25616AL-10TLI, the 7164S20TPGI offers verified 5V TTL interoperability, industrial temperature support in legacy PDIP form factor, and deterministic 20 ns timing-making it irreplaceable for sustaining production of fielded 5V embedded systems without hardware revision.
Availability
7164S20TPGI is available at Aetrix Electronics and suitable for industrial PLC data buffering, avionics test equipment memory, railway signaling controllers, and legacy medical imaging subsystems requiring stable component supply and long-term obsolescence management.
Supply support for 7164S20TPGI 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 trusted embedded solutions for automotive, industrial, infrastructure, and IoT applications.
The IDT7164 family-now part of Renesas' legacy memory portfolio-was designed specifically for high-reliability, 5V TTL-compatible static RAM applications in industrial control, defense electronics, and telecommunications infrastructure where long-lifecycle support and proven qualification are essential.
FAQ
What is the maximum guaranteed access time for the 7164S20TPGI?
The 7164S20TPGI has a maximum guaranteed address access time (tAA) of 20 ns across its full industrial operating temperature range (–40°C to +85°C), as specified in Renesas datasheet table 2967 tbl 07. This parameter is production-tested and applies to all valid combinations of CS1/CS2 activation and address setup conditions defined in the truth table. The 7164S20TPGI does not support data retention below 4.5V-battery backup is exclusive to L-versions.
Does the 7164S20TPGI support battery backup operation?
No, the 7164S20TPGI does not support battery backup operation. Battery backup with 2V data retention is a feature exclusive to the L-version (e.g., 7164L20TPGI) as explicitly stated in the "Features" section and DC Electrical Characteristics table 2967 tbl 10. The S-version is optimized for standard power consumption and lacks the low-VCC retention circuitry; using it below 4.5V risks data loss.
What package type and pin count does the 7164S20TPGI use?
The 7164S20TPGI uses a 28-pin plastic dual in-line package (PDIP) with 0.6-inch body width, identified by package code PTG28 in Renesas ordering information. Pin 1 is marked by a dot per drawing 2967 drw 02, and the layout matches standard 28-pin DIP footprints used in legacy industrial PCBs. It is not offered in SOJ or CERDIP variants under this specific orderable part number.
Is the 7164S20TPGI compliant with MIL-STD-883?
No, the 7164S20TPGI is not MIL-STD-883 compliant. Only military-grade versions (e.g., those with suffix 'DB' or 'TDB' and temperature grade 'M') are manufactured per MIL-STD-883, Class B, as noted in the "Features" section and Ordering Information. The 7164S20TPGI carries industrial temperature qualification (–40°C to +85°C) and is intended for commercial/industrial applications-not aerospace or defense platforms requiring military screening.
Can the 7164S20TPGI be used with a 3.3V microcontroller interface?
No, the 7164S20TPGI requires a 5V ±10% supply (4.5V–5.5V) and is specified for TTL-compatible signaling-its VIH minimum is 2.2V and VIL maximum is 0.8V. Direct connection to 3.3V logic violates input voltage thresholds and risks unreliable operation. Level-shifting circuitry or a 5V-tolerant I/O buffer is mandatory; Renesas does not characterize or guarantee functionality outside the 5V operating condition.
7164S20TPGI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 28-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 28-PDIP
7164S20TPGI FAQ
1.How can I place an order for 7164S20TPGI through Aetrix?
Please submit a Request for Quotation (RFQ) for 7164S20TPGI 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 7164S20TPGI reliable?
The price and inventory of 7164S20TPGI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7164S20TPGI is usually 5 days.
3.What payment methods are accepted for 7164S20TPGI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7164S20TPGI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7164S20TPGI?
7164S20TPGI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7164S20TPGI 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 7164S20TPGI?
For technical support, including 7164S20TPGI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7164S20TPGI requirements.
6.How does Aetrix verify that 7164S20TPGI is sourced from the original manufacturer or authorized distributors?
All 7164S20TPGI 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 7164S20TPGI meets industry standards.
7.What is the process for return or replacement of 7164S20TPGI?
All 7164S20TPGI units undergo pre-shipment inspection (PSI). If there is an issue with 7164S20TPGI, 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 7164S20TPGI part is unused and in its original packaging.
Return procedure for 7164S20TPGI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7164S20TPGI Tags
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M24C02-WMN6TP
STMicroelectronics
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AT24C02C-XHM-T
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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
Microchip Technology
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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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