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Renesas 7164L20TPG
- Part No.:
- 7164L20TPG
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 28-DIP (0.300", 7.62mm)
- Datasheet:
-
7164L20TPG.pdf
- Description:
- IC SRAM 64KBIT PARALLEL 28DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,871
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Product details
Overview
7164L20TPG 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 battery backup data retention down to 2V. It features dual chip select (CS1/CS2) for low-power standby mode and three-state outputs, used in legacy industrial controllers and military avionics memory subsystems.
For engineers reviewing the 7164L20TPG datasheet, 7164L20TPG pinout, 7164L20TPG application, or 7164L20TPG equivalent, key selection criteria include industrial temperature support (–40°C to +85°C), 28-pin plastic DIP package compatibility, 2V data retention capability, and CS-controlled write timing compliance.
Technical Context
The 7164L20TPG implements fully static asynchronous logic with no clock or refresh required. Its dual chip select architecture enables automatic entry into low-power standby when CS1 is HIGH or CS2 is LOW, reducing ICCSB to 5 µA typical at 25°C.
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 (IOL = 8 mA, VOL ≤ 0.4 V). The L-version specifically supports data retention at VCC = 2.0 V with ICCDR ≤ 60 µA over full industrial temperature range.
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 - determines minimum read cycle time in CPU bus interfacing |
| Supply Voltage | 5.0 V ±10% - compatible with standard TTL logic rails without level shifting |
| Data Retention Voltage | 2.0 V min - enables battery backup operation during main power loss |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded systems |
| Package | 28-pin plastic DIP (PTG28) - through-hole mounting, 600 mil width, RoHS-compliant |
| Standby Current (ISB) | 5 µA typical - enables ultra-low-power hold mode in energy-constrained systems |
Pinout & Package
7164L20TPG is housed in a 28-pin plastic dual in-line package (PTG28), 600 mil width, with 0.3 inch row spacing and standard DIP footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A12 | Address Inputs | 13-bit address bus for selecting one of 8K memory locations |
| I/O0–I/O7 | Bi-directional Data Bus | 8-bit parallel data path; high-impedance when CS inactive or OE disabled |
| CS1, CS2 | Chip Select Inputs | Active-LOW CS1 and active-HIGH CS2 enable memory access; either signal deactivates device into standby |
| WE | Write Enable | Active-LOW control for write cycles; latches data on falling edge when CS enabled |
| OE | Output Enable | Active-LOW control for output drivers; disables I/O pins to prevent bus contention |
| VCC, GND | Power Supply | Single 5V supply with dedicated ground; decoupling required per high-speed RAM layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| 20 ns access time | Enables direct interface with 25 MHz Z80, 8086, and 68000-based systems without wait states |
| Battery backup retention at 2V | Preserves memory contents during brown-out or main power failure using coin-cell backup |
| Dual chip select with auto-standby | Reduces system power by >99% when memory is idle; eliminates need for external power gating |
| TTL-compatible I/O | Direct connection to legacy microprocessor buses without level translators or pull-ups |
| Three-state outputs | Prevents bus contention in multi-device parallel memory architectures |
Applications
| Industrial PLC Memory Expansion | Military Avionics Data Logging |
|---|---|
Use Scenario: Adding non-volatile scratchpad memory to programmable logic controller backplanes operating in harsh factory environments. IC Role / Device Role / Timing Role: Byte-accessible SRAM buffer for real-time I/O state storage and firmware variable retention. Use Value: 20 ns access ensures deterministic scan-cycle timing; –40°C to +85°C rating guarantees reliability across thermal cycling. |
Use Scenario: Storing flight parameter snapshots in airborne black box recorders where power interruption is probable. IC Role / Device Role / Timing Role: Battery-backed memory holding critical telemetry during engine shutdown or electrical fault. Use Value: 2V data retention allows operation from backup lithium cell; MIL-STD-883 Class B traceability supports DO-160 compliance. |
| Legacy Medical Imaging Buffer | Test Equipment Pattern Memory |
Use Scenario: Frame buffering in early digital ultrasound systems using discrete 8-bit microcontrollers. IC Role / Device Role / Timing Role: High-speed parallel memory for digitized A-scan line storage prior to DSP processing. Use Value: TTL compatibility simplifies integration with 74LS logic; 28-pin DIP fits existing PCB layouts with zero redesign. |
Use Scenario: Storing stimulus/response patterns in automated circuit testers requiring deterministic read/write timing. IC Role / Device Role / Timing Role: Static pattern store accessed synchronously with test clock edges via CS/WE/OE handshaking. Use Value: 20 ns tAA and tight AC specs (tWP = 15 ns) ensure sub-microsecond test vector execution repeatability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar static RAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY62167EV30LL-20ZSXI | 512K × 8-bit, 3.3V core, 20 ns access, SOIC-32 package | Higher density and lower voltage; requires level translation for 5V bus systems | Select when upgrading capacity and power efficiency is prioritized over pin compatibility |
| AS6C1008-20PCN | 128K × 8-bit, 5V, 20 ns, 28-pin PDIP, no battery retention | Same package and voltage but lacks 2V data retention; higher density only | Select for cost-sensitive industrial designs where battery backup is unnecessary |
Compared with CY62167EV30LL-20ZSXI and AS6C1008-20PCN, the 7164L20TPG uniquely delivers industrial-temperature-rated 2V data retention in a legacy 28-pin 5V DIP form factor-critical for drop-in replacement in fielded equipment.
Availability
7164L20TPG is available at Aetrix Electronics and suitable for industrial PLC memory expansion, military avionics data logging, legacy medical imaging buffers, and test equipment pattern memory requiring stable component supply across extended product lifecycles.
Supply support for 7164L20TPG 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 7164L20TPG belongs to Renesas' legacy CMOS SRAM product line, designed specifically for long-lifecycle industrial and defense applications requiring proven reliability, wide temperature operation, and backward-compatible packaging.
FAQ
What is the operating temperature range for the 7164L20TPG?
The 7164L20TPG is rated for industrial temperature operation from –40°C to +85°C. This specification is confirmed in the "Recommended Operating Temperature and Supply Voltage" table (2967 tbl 03) and applies specifically to the TPG package variant ordered with industrial grade marking. It does not support military or commercial-only temperature ranges.
Does the 7164L20TPG support battery backup data retention?
Yes, the 7164L20TPG supports battery backup data retention at VCC = 2.0 V minimum, as specified in the "Data Retention Characteristics" table (2967 tbl 10). This function is exclusive to the "L" version and is validated across the full industrial temperature range with ICCDR ≤ 60 µA.
What package type is used for the 7164L20TPG?
The 7164L20TPG uses a 28-pin plastic dual in-line package (PTG28), 600 mil width, as defined in the Ordering Information section (2967 drw 11). Pin configuration matches standard 28-pin DIP footprints with pin 1 marked by a dot, and it is RoHS-compliant per Renesas green part designation.
How does chip select work on the 7164L20TPG?
The 7164L20TPG uses two independent chip selects: CS1 (active-LOW) and CS2 (active-HIGH). The device is selected only when CS1 = LOW and CS2 = HIGH. If CS1 goes HIGH or CS2 goes LOW, the device enters low-power standby mode with ISB ≤ 5 µA, as verified in DC Electrical Characteristics (2967 tbl 07).
Is the 7164L20TPG pin-compatible with other 7164 variants?
Yes, all 7164 family members-including 7164S and 7164L variants in PTG28 package-share identical 28-pin DIP pinout and signal definitions per the "Pin Configurations" diagram (2967 drw 02). However, the L-version adds 2V data retention capability not present in S-version parts.
7164L20TPG 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 28-PDIP
7164L20TPG FAQ
1.How can I place an order for 7164L20TPG through Aetrix?
Please submit a Request for Quotation (RFQ) for 7164L20TPG 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 7164L20TPG reliable?
The price and inventory of 7164L20TPG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7164L20TPG is usually 5 days.
3.What payment methods are accepted for 7164L20TPG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7164L20TPG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7164L20TPG?
7164L20TPG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7164L20TPG 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 7164L20TPG?
For technical support, including 7164L20TPG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7164L20TPG requirements.
6.How does Aetrix verify that 7164L20TPG is sourced from the original manufacturer or authorized distributors?
All 7164L20TPG 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 7164L20TPG meets industry standards.
7.What is the process for return or replacement of 7164L20TPG?
All 7164L20TPG units undergo pre-shipment inspection (PSI). If there is an issue with 7164L20TPG, 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 7164L20TPG part is unused and in its original packaging.
Return procedure for 7164L20TPG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7164L20TPG Tags
-
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
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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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