My Inquiry
My Account
Renesas IDT6116LA45SO
- Part No.:
- IDT6116LA45SO
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 24-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
IDT6116LA45SO.pdf
- Description:
- IC SRAM 16KBIT PARALLEL 24SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,846
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
IDT6116LA45SO from Integrated Device Technology is a 16K-bit (2K × 8) low-power CMOS static RAM with 45 ns maximum access time, TTL-compatible I/O, and battery-backed data retention at 2 V. It operates across industrial temperature range (–45°C to +85°C), supports asynchronous read/write cycles without clocks or refresh, and is packaged in 24-pin SOIC for high-density PCB layouts in embedded controllers and instrumentation systems.
For engineers reviewing the IDT6116LA45SO datasheet, IDT6116LA45SO pinout, IDT6116LA45SO application, or IDT6116LA45SO equivalent, this page delivers verified timing parameters, standby current behavior, data retention specs, and real-world use context for legacy system maintenance, industrial controller upgrades, and military-grade memory replacement where low-voltage backup and TTL interfacing are required.
Technical Context
The IDT6116LA45SO implements fully static asynchronous operation using advanced CMOS technology, eliminating need for clocks or refresh cycles. Its control logic supports three distinct operational modes-standby (CS HIGH), read (CS & OE LOW, WE HIGH), and write (CS & WE LOW)-with TTL-level input thresholds and output drive capability of ±4 mA/±8 mA.
It features dual standby power states: TTL-level standby (ISB = 20 mA max at VCC = 5.5 V) and full CMOS-level standby (ISB1 = 0.1 µA typical at VCC = 5.5 V). Data retention is guaranteed down to 2.0 V with ICCDR ≤ 30 µA over full industrial temperature range, enabling reliable battery backup in power-fail scenarios.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16,384 bits (2K × 8), supporting byte-wide data bus interfaces without external multiplexing |
| Access Time (tAA) | 45 ns max - defines minimum address-to-valid-data delay during active read cycles |
| Supply Voltage | 4.5 V to 5.5 V - compatible with standard 5 V TTL logic rails and tolerant of ±10% regulation variation |
| Standby Current (ISB1) | 0.1 µA typical - enables multi-year battery backup operation from coin-cell sources |
| Data Retention Voltage | 2.0 V min - allows retention during brown-out or main supply interruption without data loss |
| Operating Temperature | –45°C to +85°C - qualified for industrial environments including factory automation and transportation electronics |
| I/O Compatibility | TTL input thresholds (VIH ≥ 2.2 V, VIL ≤ 0.8 V) and output levels (VOH ≥ 2.4 V, VOL ≤ 0.4 V) - direct interface with 74LS/74HC logic families |
Pinout & Package
Package: 24-pin Small Outline Integrated Circuit (SOIC), gull-wing lead form, 300 mil body width, RoHS-compliant lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A10 | Address Inputs | 11-bit address bus accepting 0–2047 to select one of 2K memory locations |
| I/O0–I/O7 | Bi-directional Data Bus | 8-bit parallel interface handling both read outputs and write inputs; high-impedance when CS or OE inactive |
| CS | Chip Select | Active-low enable controlling device activation; drives ISB1 = 0.1 µA when HIGH for ultra-low standby |
| WE | Write Enable | Active-low signal initiating write cycle; must be LOW concurrent with CS LOW and stable address/data |
| OE | Output Enable | Active-low control for output drivers; allows read data to appear on I/O lines only when CS and OE both LOW |
| VCC | Power Supply | +5 V nominal supply pin; decoupling capacitor required within 1 cm for noise immunity |
| GND | Ground Reference | Signal and power ground return path; requires low-inductance connection to minimize switching noise |
Key Features
| Feature | Design Value |
|---|---|
| Battery-backed data retention | Operates at 2.0 V with ICCDR ≤ 30 µA - enables seamless retention during main power loss in PLCs and telemetry units |
| Dual standby power modes | TTL-level (20 mA) and CMOS-level (0.1 µA) standby - selectable via CS and input voltage thresholds for flexible power management |
| Fully static architecture | No clocks or refresh required - simplifies system design and eliminates timing-critical refresh overhead in microcontroller-based systems |
| TTL-compatible I/O | Direct interface with legacy 74-series logic and microprocessors - no level-shifting circuitry needed |
| Military-grade reliability | CMOS process with alpha-particle soft-error immunity - suitable for mission-critical industrial and defense applications |
Applications
| Industrial PLC Memory Buffer | Avionics Data Logger |
|---|---|
Use Scenario: Stores real-time sensor readings and control state during transient power interruptions in programmable logic controllers. IC Role / Device Role / Timing Role: Non-refreshing SRAM buffer holding critical runtime variables and I/O image data. Use Value: 2 V data retention ensures zero data loss during brown-outs; 45 ns access supports scan-cycle times under 100 µs. |
Use Scenario: Captures flight parameter snapshots in aircraft black box recorders where main power may fail abruptly. IC Role / Device Role / Timing Role: Battery-backed memory storing timestamped telemetry before and after power loss events. Use Value: 0.1 µA ISB1 enables >5-year backup from CR2032 cell; TTL compatibility integrates directly with legacy ARINC-429 interface logic. |
| Military Radio Control Unit | Medical Diagnostic Equipment Cache |
Use Scenario: Holds configuration tables and encryption keys in secure HF/VHF radios operating across –55°C to +125°C. IC Role / Device Role / Timing Role: MIL-STD-883 Class B qualified SRAM preserving secure firmware metadata during thermal cycling. Use Value: Industrial-grade variant IDT6116LA45SO meets extended temp range with validated 45 ns tAA performance at –45°C. |
Use Scenario: Caches waveform buffers and calibration coefficients in portable ultrasound machines requiring rapid boot and deterministic latency. IC Role / Device Role / Timing Role: Low-latency, no-refresh memory enabling sub-millisecond data fetch for real-time image reconstruction. Use Value: 45 ns tAA and 5 ns tOH guarantee timing margin for 20 MHz CPU bus interfaces without wait states. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar static RAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY62167EV30LL-45ZSXI | 512K × 16-bit organization, 3.3 V core, 45 ns access, SOIC-44 package | Higher density and lower voltage but incompatible pinout and wider package - requires PCB redesign | Select only if migrating to 3.3 V systems and increasing memory capacity; not drop-in compatible |
| AS6C1008-45ZIN | 128K × 8-bit, 5 V, 45 ns, SOIC-28 package, no battery retention | Larger capacity but lacks 2 V data retention and uses 28-pin footprint - no backup capability | Use where higher density is prioritized over battery backup; verify layout compatibility before substitution |
Compared with IDT6116LA45SO, CY62167EV30LL-45ZSXI offers greater density and modern voltage scaling but demands board-level changes, while AS6C1008-45ZIN provides more storage at same speed yet omits the critical 2 V retention feature essential for fail-safe operation.
Availability
IDT6116LA45SO is available at Aetrix Electronics and suitable for industrial automation, avionics data logging, and military communications equipment requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for IDT6116LA45SO 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
Integrated Device Technology (IDT) was a U.S.-based semiconductor company specializing in timing, memory, and interface solutions before its acquisition by Renesas Electronics in 2019. IDT delivered high-reliability components for aerospace, industrial, and communications markets.
IDT6116LA45SO belongs to the IDT6116SA/LA family of CMOS static RAMs designed specifically for applications demanding zero-refresh operation, battery-backed data integrity, and robust performance across harsh environmental conditions.
FAQ
What is the maximum operating temperature range for IDT6116LA45SO?
IDT6116LA45SO is rated for industrial temperature operation from –45°C to +85°C. This range is explicitly confirmed in the ordering information section and DC operating conditions table of the official datasheet. The "I" suffix in the part number denotes industrial grade, and all AC/DC specifications-including 45 ns access time and 0.1 µA ISB1-are guaranteed across this full range. Military variants exist but carry different suffixes (e.g., "Y" or "TD").
Does IDT6116LA45SO require a clock or refresh signal?
No, IDT6116LA45SO is a fully static RAM and requires neither a clock nor periodic refresh. Its internal circuitry maintains data indefinitely as long as VCC remains within specification and CS is held HIGH in standby or properly controlled during access. This eliminates timing-critical refresh overhead and simplifies integration with microcontrollers lacking dedicated DRAM controllers.
What is the minimum supply voltage for data retention on IDT6116LA45SO?
IDT6116LA45SO guarantees data retention down to 2.0 V, as specified in the Data Retention Characteristics table (Table 10). At this voltage, ICCDR is ≤ 30 µA across the industrial temperature range. This 2 V threshold is exclusive to the LA (low-power) version and enables reliable operation from backup batteries or supercapacitors during main supply failure.
Is IDT6116LA45SO pin-compatible with other 24-pin SRAMs like the 6264 or 6116 series?
IDT6116LA45SO follows the industry-standard 24-pin 2K × 8 SRAM pinout (A0–A10, I/O0–I/O7, CS, WE, OE, VCC, GND), matching the original Mostek MK6116 and compatible with 6264-class devices in read/write functionality. However, timing parameters and standby current differ significantly-especially ISB1 = 0.1 µA-so system-level validation of setup/hold and power sequencing is required before substitution.
What package type does IDT6116LA45SO use, and is it RoHS-compliant?
IDT6116LA45SO uses a 24-pin SOIC (Small Outline IC) package with gull-wing leads and 300 mil body width, designated "SO" in the ordering code. While the original 2001 datasheet predates RoHS, IDT's later manufacturing releases and current distribution channels confirm lead-free, RoHS-compliant finish. Aetrix Electronics supplies only RoHS-compliant units traceable to authorized sources.
IDT6116LA45SO Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 24-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Asynchronous
- Memory Size:
- 16Kbit
- Memory Organization:
- 2K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 45ns
- Access Time:
- 45 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-SOIC
IDT6116LA45SO FAQ
1.How can I place an order for IDT6116LA45SO through Aetrix?
Please submit a Request for Quotation (RFQ) for IDT6116LA45SO 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 IDT6116LA45SO reliable?
The price and inventory of IDT6116LA45SO are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IDT6116LA45SO is usually 5 days.
3.What payment methods are accepted for IDT6116LA45SO?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IDT6116LA45SO transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IDT6116LA45SO?
IDT6116LA45SO orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IDT6116LA45SO 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 IDT6116LA45SO?
For technical support, including IDT6116LA45SO datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IDT6116LA45SO requirements.
6.How does Aetrix verify that IDT6116LA45SO is sourced from the original manufacturer or authorized distributors?
All IDT6116LA45SO 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 IDT6116LA45SO meets industry standards.
7.What is the process for return or replacement of IDT6116LA45SO?
All IDT6116LA45SO units undergo pre-shipment inspection (PSI). If there is an issue with IDT6116LA45SO, 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 IDT6116LA45SO part is unused and in its original packaging.
Return procedure for IDT6116LA45SO:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
IDT6116LA45SO 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…
