Renesas 7026L15JG

Overview

IDT7026L15JG from IDT (now Renesas) is a high-speed 16K × 16 true dual-port static RAM with independent left/right ports, 15 ns maximum read cycle time (commercial grade), 5 V ±10% single-supply operation, and on-chip semaphore arbitration logic. It enables simultaneous asynchronous access to the same memory location in real-time inter-processor communication systems.

For engineers reviewing the IDT7026L15JG datasheet, IDT7026L15JG pinout, IDT7026L15JG application, or IDT7026L15JG equivalent, key selection considerations include BUSY flag timing (tBAA ≤ 15 ns), low standby current (1 mA typ.), master/slave cascading capability for 32-bit+ bus expansion, and industrial temperature support (–40°C to +85°C).

Technical Context

The IDT7026L15JG implements fully asynchronous dual-port architecture with separate address, control, and I/O buses per port - enabling concurrent read/write operations without external arbitration logic. Its on-chip hardware semaphore logic supports eight shared flags accessed via A0–A2 and I/O0, with write-to-read latency of 5 ns (tSWRD).

Port arbitration uses push-pull BUSY outputs (BUSYL/BUSYR) in master mode or BUSY inputs in slave mode (M/S = L), with priority determined by setup timing (tAPS = 5 ns). The device supports byte-selectable writes (UBL/LBL, UBR/LBR) and automatic power-down via CE-controlled standby modes.

Key Specifications

Pinout & Package

84-pin Plastic Leaded Chip Carrier (PLCC) package, 1.15 in × 1.15 in footprint, lead-free and RoHS-compliant. Pin 1 marked by corner notch; body height ≈ 0.17 in.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C1362BV18 and AS7C3256B, IDT7026L15JG uniquely delivers 5 V TTL-compatible dual-port operation with integrated hardware arbitration in an industry-standard PLCC package - making it irreplaceable in legacy industrial and avionics upgrades where voltage, timing, and pinout compatibility are mandatory.

Availability

IDT7026L15JG is available at Aetrix Electronics and suitable for industrial PLCs, motor drive controllers, avionics data loggers, and DSP-FPGA co-processing systems requiring stable component supply across extended product lifecycles.

Supply support for IDT7026L15JG 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 (formerly Integrated Device Technology) is a global semiconductor leader specializing in high-performance memory, microcontrollers, and analog solutions for industrial, automotive, and communications markets.

IDT7026L15JG belongs to the legacy IDT7026 dual-port SRAM family, designed specifically for deterministic real-time inter-processor communication in mission-critical embedded systems requiring hardware-enforced memory coherency.

FAQ

What is the maximum operating frequency supported by IDT7026L15JG?

IDT7026L15JG supports a 15 ns read cycle time (tRC), enabling reliable operation at up to 66.7 MHz in commercial-grade systems. Its fully asynchronous design means no clock is required - timing is governed solely by address and control signal propagation, making it ideal for mixed-signal environments where clock distribution is impractical.

Does IDT7026L15JG support industrial temperature range?

Yes, IDT7026L15JG is rated for –40°C to +85°C operation, meeting industrial temperature requirements. This rating is explicitly confirmed in the "Maximum Operating Temperature and Supply Voltage" table (2939 tbl 01) and applies to the JG (PLCC) package variant with L-speed grade.

How does the BUSY arbitration logic function in IDT7026L15JG?

In master mode (M/S = H), IDT7026L15JG asserts BUSYL or BUSYR when both ports attempt access to the same address. The earlier access wins; the later port's write is gated internally. In slave mode (M/S = L), BUSY pins become inputs - allowing daisy-chained arbitration across multiple devices without external logic.

Can IDT7026L15JG be used in a 32-bit data bus configuration?

Yes, IDT7026L15JG supports 32-bit expansion via its Master/Slave select (M/S) pin. Two devices can be cascaded - one as master, one as slave - using BUSY handshaking to coordinate access, eliminating the need for discrete logic and preserving full-speed operation across the combined 32-bit word.

What is the standby current consumption of IDT7026L15JG?

IDT7026L15JG draws 1 mA typical standby current (ISB3) when both ports are disabled with CMOS-level inputs (CE > VCC − 0.2 V). This ultra-low quiescent draw is specified in Table 10 (2939 tbl 10) and makes it suitable for battery-backed or energy-constrained industrial control modules.