Renesas 7026L15JG8

Overview

7026L15JG8 from IDT (Integrated Device Technology) is a high-speed 16K × 16 true dual-port static RAM with independent left/right ports, 15 ns maximum read cycle time, 5 V ±10% single-supply operation, and integrated hardware semaphore logic for inter-port synchronization - used in real-time DSP co-processing, military-grade avionics data buffers, and master/slave memory expansion systems.

For engineers reviewing the 7026L15JG8 datasheet, 7026L15JG8 pinout, 7026L15JG8 application, or 7026L15JG8 equivalent, key selection criteria include its 15 ns commercial-grade access timing, 1 mW typical standby power, 84-pin PLCC package with full BUSY arbitration and semaphore flag support, and compatibility with TTL-level control signals.

Technical Context

The 7026L15JG8 implements fully asynchronous dual-port architecture with separate address, control, and I/O buses per port, enabling simultaneous read/write to identical memory locations under hardware-managed contention via push-pull BUSY outputs. Its on-chip arbitration logic resolves port conflicts using chip enable and address match detection, not R/W state.

It supports two operational modes: MASTER (BUSYL/BUSYR as outputs, M/S = H) for automatic busy-flag generation during address contention, and SLAVE (M/S = L) where BUSY pins become write-inhibit inputs. Semaphore access uses dedicated SEM, A0–A2, and I/O0 for eight shared flags, isolated from main memory array access.

Key Specifications

Pinout & Package

7026L15JG8 is housed 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 requiring direct connection to respective supply rails per datasheet Note 1–2.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-port SRAM applications.

Compared with CY7C136-15VC and IDT70V26S15PF, the 7026L15JG8 uniquely delivers integrated semaphore logic and push-pull BUSY in a 5 V, 84-pin PLCC package - making it the only option for retrofitting hardware-synchronized dual-processor memory without modifying PCB layout or adding discrete logic.

Availability

7026L15JG8 is available at Aetrix Electronics and suitable for real-time DSP co-processing, military avionics data buffering, and industrial PLC memory expansion requiring stable component supply across extended production lifecycles.

Supply support for 7026L15JG8 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 timing, memory, and interface solutions, now part of Renesas Electronics since 2019.

The IDT7026 family was designed specifically for deterministic, low-latency dual-processor memory sharing in aerospace, defense, and industrial automation - prioritizing hardware arbitration, semaphore support, and 5 V robustness over density or cost scaling.

FAQ

What is the maximum operating temperature range for the 7026L15JG8?

The 7026L15JG8 is rated for commercial operation from 0°C to +70°C. It is not qualified for industrial (−40°C to +85°C) or military temperature ranges - those require distinct speed-grade variants like 7026L20JG8 or 7026L25JG8 explicitly specified for wider ambient conditions.

Does the 7026L15JG8 support true simultaneous read/write to the same memory address?

Yes, the 7026L15JG8 implements true dual-port cells that permit concurrent access to identical addresses. When contention occurs, its on-chip arbitration logic asserts BUSYL or BUSYR to stall one port while allowing the other to complete - ensuring data integrity without external logic.

How does the M/S pin affect BUSY pin functionality on the 7026L15JG8?

When M/S = HIGH, the 7026L15JG8 operates as MASTER: BUSYL and BUSYR are push-pull outputs indicating port contention. When M/S = LOW, it operates as SLAVE: BUSYL and BUSYR become write-inhibit inputs, allowing external priority control - no internal arbitration is performed.

Can the 7026L15JG8 be used in a 32-bit data path configuration?

Yes, the 7026L15JG8 supports 32-bit expansion via MASTER/SLAVE cascading. One device is configured as MASTER (M/S = H), another as SLAVE (M/S = L); their BUSY signals coordinate access, and combined I/O0–I/O31 provide full 32-bit width without additional logic.

What is the standby power consumption of the 7026L15JG8 in full sleep mode?

In full standby (ISB3 mode), with both ports disabled and all inputs at valid CMOS levels, the 7026L15JG8 draws just 0.2 mA typical - equivalent to 1 mW at 5 V - making it suitable for battery-backed or energy-sensitive applications where background memory retention is required.