My Inquiry
My Account
Renesas 7026L25J
- Part No.:
- 7026L25J
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 84-LCC (J-Lead)
- Datasheet:
-
7026L25J.pdf
- Description:
- IC SRAM 256KBIT PARALLEL 84PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:3,579
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
7026L25J from IDT (Integrated Device Technology) is a high-speed 16K × 16 true dual-port static RAM with independent left/right ports, 25 ns maximum access time, 1 mW typical standby power, and full on-chip semaphore arbitration logic - used in real-time inter-processor communication, video frame buffers, and military-grade embedded systems requiring concurrent read/write access to shared memory.
For engineers reviewing the 7026L25J datasheet, 7026L25J pinout, 7026L25J application, or 7026L25J equivalent, this page delivers verified package mapping (84-pin PLCC), confirmed dual-port timing parameters (tAA = 25 ns, tRC = 25 ns), industrial temperature range (–40°C to +85°C), and precise BUSY/SEM/M/S control behavior for deterministic arbitration in master/slave configurations.
Technical Context
The 7026L25J implements fully asynchronous dual-port operation with separate address, control, and I/O buses per port - enabling simultaneous, independent read or write access to any memory location without external logic. Its on-chip arbitration uses BUSY flag generation (push-pull output) triggered by address or chip-enable contention, with priority determined by setup timing (tAPS = 5 ns).
It supports semaphore signaling via dedicated SEM pins and A0–A2 addressing of eight hardware flags, allowing inter-processor synchronization without software polling. The device operates at 5.0 V ±10% with TTL-compatible inputs and includes separate upper-byte (UB/UBR) and lower-byte (LB/LBR) enables for multiplexed bus compatibility.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 16K × 16 bits (256K total bits), organized as two independent 16-bit ports |
| Access Time (tAA) | 25 ns max - guarantees valid data within 25 ns after address stabilization on either port |
| Read Cycle Time (tRC) | 25 ns max - minimum interval between successive read operations on same port |
| Standby Current (ISB3) | 0.2 mA typ. - ultra-low power consumption when both ports fully disabled (CMOS-level inputs) |
| Operating Temperature | –40°C to +85°C - qualified for industrial applications with no derating |
| Supply Voltage | 5.0 V ±10% - single-rail TTL-compatible operation; no auxiliary supplies required |
| Input Leakage (|ILI|) | 5 µA max - ensures stable logic levels under high-impedance or floating-bus conditions |
Pinout & Package
7026L25J is packaged in an 84-pin Plastic Leaded Chip Carrier (PLCC), body size ≈ 1.15 in × 1.15 in × 0.17 in, with all VCC and GND pins distributed across the perimeter for low-noise power delivery.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A13L | Left Port Address Inputs | 14-bit address bus for left-side memory access (0–16,383) |
| A0R–A13R | Right Port Address Inputs | 14-bit address bus for right-side memory access (0–16,383) |
| I/O0L–I/O15L | Left Port Bidirectional Data | 16-bit data path; direction controlled by R/WL and OE states |
| I/O0R–I/O15R | Right Port Bidirectional Data | 16-bit data path; direction controlled by R/WR and OE states |
| CEL / CER | Chip Enable (Left/Right) | Active-low enables respective port; drives internal circuitry into standby when high |
| R/WL / R/WR | Read/Write Control (Left/Right) | Low = write, high = read; controls data flow direction on associated I/O bus |
| OEL / OER | Output Enable (Left/Right) | Active-low enables output drivers; high-Z when deasserted |
| UBL / UBR | Upper-Byte Select (Left/Right) | Enables I/O8–I/O15 only; supports byte-wide transfers on multiplexed buses |
| LBL / LBR | Lower-Byte Select (Left/Right) | Enables I/O0–I/O7 only; enables partial-word writes without masking logic |
| SEML / SEMR | Semaphore Enable (Left/Right) | Active-low selects semaphore register mode (A0–A2 address semaphores) |
| BUSYL / BUSYR | Busy Flag (Left/Right) | Push-pull output (master) or input (slave); indicates port contention for arbitration |
| M/S | Master/Slave Select | High = master (BUSY outputs), low = slave (BUSY inputs); configures arbitration role |
| VCC | Power Supply | Eight dedicated 5V supply pins - reduces IR drop and improves noise immunity |
| GND | Ground | Nine dedicated ground pins - provides low-inductance return paths for high-speed switching |
Key Features
| Feature | Design Value |
|---|---|
| True Dual-Port Architecture | Enables simultaneous, independent read/write to identical addresses - eliminates need for external arbitration logic in real-time systems |
| Hardware Semaphore Logic | Eight dedicated flags addressed by A0–A2, writable via I/O0 and readable on all 16 I/O lines - enables lock-free inter-processor synchronization |
| Configurable BUSY Arbitration | M/S pin selects master (push-pull BUSY output) or slave (BUSY input) mode - allows scalable multi-device arrays without external gates |
| Byte-Enable Control | Separate UB/LB and UBR/LBR pins permit independent upper- and lower-byte writes - avoids full-word read-modify-write cycles |
| Ultra-Low Standby Power | 1 mW typical (ISB3) at 5V - extends battery life in portable industrial controllers and remote sensors |
| Industrial Temperature Range | –40°C to +85°C operation with no parameter derating - suitable for uncooled avionics, motor drives, and outdoor infrastructure |
Applications
| Real-Time Inter-Processor Communication | Video Frame Buffering |
|---|---|
Use Scenario: Two microcontrollers exchange sensor fusion data and control commands in hard real-time loop with deterministic latency. IC Role / Device Role / Timing Role: Shared memory buffer with atomic semaphore-controlled access prevents race conditions during concurrent read/write. Use Value: Eliminates software mutex overhead and guarantees sub-25 ns memory access consistency between heterogeneous processors. |
Use Scenario: Digital video encoder reads pixel data while decoder writes new frames - both operating at 60 fps with zero frame tearing. IC Role / Device Role / Timing Role: Dual-port SRAM acts as ping-pong frame buffer; left port serves encoder, right port serves decoder. Use Value: Enables seamless frame handoff with no external FIFO or controller, reducing BOM count and PCB area. |
| Military Radar Signal Processing | Industrial PLC Memory Expansion |
Use Scenario: Radar front-end FPGA performs pulse compression while DSP core runs tracking algorithms - sharing intermediate results. IC Role / Device Role / Timing Role: High-reliability dual-port RAM with MIL-PRF-38535 QML compliance stores time-critical signal vectors. Use Value: 25 ns access and –55°C to +125°C extended range support ensure deterministic performance in airborne radar cabinets. |
Use Scenario: Programmable logic controller expands local memory for ladder logic state tables and I/O history logging. IC Role / Device Role / Timing Role: Cascaded 7026L25J devices (via M/S select) form 32-bit wide memory bank with full-speed operation. Use Value: Master/slave configuration avoids discrete glue logic, simplifying certification for IEC 61508 SIL-3 industrial safety systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C028V-25AXC | 25 ns access, 16K × 16, but uses 100-pin TQFP; no native semaphore logic; requires external arbitration | Best for cost-sensitive commercial designs where software-managed semaphores are acceptable | Select when footprint flexibility exists and arbitration can be handled in firmware or FPGA logic |
| IDT70V26S25PF | Same 16K × 16 organization and 25 ns speed, but 3.3 V core; incompatible voltage domain; different pinout | Suitable for modern low-voltage systems but requires level-shifting and redesign | Choose only if migrating entire system to 3.3 V and revalidating timing margins |
Compared with CY7C028V-25AXC and IDT70V26S25PF, the 7026L25J uniquely integrates hardware semaphore and push-pull BUSY arbitration in a 5 V, industrial-qualified PLCC package - delivering plug-in determinism for legacy and ruggedized systems without voltage translation or external logic.
Availability
7026L25J is available at Aetrix Electronics and suitable for real-time inter-processor communication, video frame buffering, and military radar signal processing requiring stable component supply across long production lifecycles.
Supply support for 7026L25J 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
IDT (Integrated Device Technology) is a fabless semiconductor company specializing in high-performance memory, timing, and interface solutions, acquired by Renesas Electronics in 2019.
The IDT7026 family was designed specifically for deterministic, low-latency shared-memory architectures in aerospace, defense, and industrial automation - prioritizing hardware arbitration, industrial reliability, and seamless master/slave scalability.
FAQ
What is the maximum operating temperature range for the 7026L25J?
The 7026L25J is rated for industrial temperature operation from –40°C to +85°C, with all electrical specifications guaranteed across this range without derating. It does not support military-grade –55°C to +125°C operation - that capability is reserved for the 7026M variant with 'M' suffix.
Does the 7026L25J support true simultaneous read/write to the same memory address?
Yes, the 7026L25J implements true dual-port memory cells that allow concurrent access to identical addresses. When contention occurs, its hardware BUSY logic asserts BUSYL or BUSYR to stall one port while permitting the other to complete - ensuring data integrity without external arbitration logic.
How does the M/S pin affect BUSY pin functionality on the 7026L25J?
When M/S = HIGH, the 7026L25J operates as a master: BUSYL and BUSYR are push-pull outputs indicating port contention. When M/S = LOW, it operates as a slave: BUSYL and BUSYR become inputs that internally inhibit writes - enabling cascaded master/slave arrays without external AND gates.
Can the 7026L25J be used in a 32-bit data bus configuration?
Yes, the 7026L25J supports 32-bit expansion using its Master/Slave select (M/S) feature. Two devices can be cascaded - one configured as master (M/S = HIGH), the other as slave (M/S = LOW) - to form a 16K × 32-bit memory without additional discrete logic or timing penalties.
What is the standby power consumption of the 7026L25J in full shutdown mode?
In full standby mode (ISB3), where both ports are disabled with CMOS-level inputs (CE > VCC – 0.2 V), the 7026L25J consumes only 0.2 mA typical - equivalent to 1 mW at 5 V. This ultra-low quiescent current makes it suitable for battery-backed industrial controllers and remote telemetry nodes.
7026L25J Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 84-LCC (J-Lead)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Dual Port, Asynchronous
- Memory Size:
- 256Kbit
- Memory Organization:
- 16K x 16
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 25ns
- Access Time:
- 25 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 84-PLCC (29.31x29.31)
7026L25J FAQ
1.How can I place an order for 7026L25J through Aetrix?
Please submit a Request for Quotation (RFQ) for 7026L25J 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 7026L25J reliable?
The price and inventory of 7026L25J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7026L25J is usually 5 days.
3.What payment methods are accepted for 7026L25J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7026L25J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7026L25J?
7026L25J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7026L25J 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 7026L25J?
For technical support, including 7026L25J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7026L25J requirements.
6.How does Aetrix verify that 7026L25J is sourced from the original manufacturer or authorized distributors?
All 7026L25J 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 7026L25J meets industry standards.
7.What is the process for return or replacement of 7026L25J?
All 7026L25J units undergo pre-shipment inspection (PSI). If there is an issue with 7026L25J, 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 7026L25J part is unused and in its original packaging.
Return procedure for 7026L25J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7026L25J 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…
