Renesas 7132LA35L48B

Overview

IDT7132LA35L48B from Integrated Device Technology (IDT) is a high-speed 2K × 8 dual-port static RAM configured as a MASTER device with on-chip arbitration logic, BUSY output flag, 35 ns maximum read cycle time, 5 V ±10% TTL-compatible supply, and industrial temperature range (–40°C to +85°C). It enables full-speed, error-free 16-bit-or-wider memory expansion when paired with IDT7142 SLAVE devices in real-time embedded control and digital signal processing systems.

For engineers reviewing the IDT7132LA35L48B datasheet, IDT7132LA35L48B pinout, IDT7132LA35L48B application, or IDT7132LA35L48B equivalent, key selection considerations include its open-drain BUSY outputs requiring 270 Ω pull-up resistors, battery-backed data retention at 2 V, 1 mW typical standby power, and 48-pin flatpack package with dedicated left/right port control for asynchronous dual-access memory architectures.

Technical Context

The IDT7132LA35L48B implements independent left and right ports with separate address (A0–A10), data (I/O0–I/O7), and control lines (CEL/CER, OEL/OER, R/WL/R/WR, BUSYL/BUSYR), enabling true asynchronous concurrent read/write access to any memory location. Its on-chip arbitration logic resolves port contention by asserting BUSY outputs when both ports attempt simultaneous access to the same address.

As a MASTER device, it features open-drain BUSYL and BUSYR outputs (requiring external 270 Ω pull-ups), supports battery backup operation down to 2 V for data retention, and enters ultra-low-power standby mode (1 mW typ.) when CE is deasserted. It is not pin-compatible with IDT7142 SLAVE variants due to BUSY pin direction reversal and absence of arbitration logic in slaves.

Key Specifications

Pinout & Package

Package: 48-lead flatpack (FP48), body dimensions ≈ 0.75 in × 0.75 in × 0.11 in, hermetic ceramic construction compliant with MIL-PRF-38535 QML for high-reliability applications.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IDT7132LA35L48B, CY7C1371D-133AXC offers higher bandwidth but adds complexity via external arbitration, while IDT7142LA35L48B provides identical speed and package but lacks MASTER functionality - making it unsuitable as a direct functional replacement.

Availability

IDT7132LA35L48B is available at Aetrix Electronics and suitable for real-time digital signal processing, industrial motion control, and avionics data buffering requiring stable component supply, long-term lifecycle support, and MIL-qualified packaging.

Supply support for IDT7132LA35L48B 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 fabless semiconductor company specializing in timing, memory interface, RF, and sensor solutions before its acquisition by Renesas Electronics in 2019. IDT products remain widely deployed in industrial and aerospace systems.

IDT7132LA35L48B belongs to the IDT7132/7142 dual-port SRAM product line, designed specifically for deterministic, low-latency memory sharing between asynchronous processors, DSPs, or peripheral controllers in mission-critical embedded systems.

FAQ

What is the function of BUSYL and BUSYR on the IDT7132LA35L48B?

BUSYL and BUSYR are open-drain arbitration status outputs on the IDT7132LA35L48B. When asserted low, they indicate that the corresponding port (left or right) has encountered address contention with the opposite port. These signals require external 270 Ω pull-up resistors to VCC and are used to stall external controllers until contention resolves. They are outputs only on the MASTER IDT7132LA35L48B - unlike SLAVE IDT7142 parts where BUSY pins serve as inputs.

Does the IDT7132LA35L48B support battery backup operation?

Yes, the IDT7132LA35L48B supports battery backup operation with guaranteed data retention at VCC = 2.0 V. This LA-series feature allows the device to maintain stored memory contents during main power failure, consuming ≤4000 µA (military/industrial grade) in retention mode. The 2 V threshold is strictly enforced - operation below 2.0 V results in undefined leakage and potential data loss.

What is the difference between IDT7132LA35L48B and IDT7142LA35L48B?

IDT7132LA35L48B is a MASTER dual-port SRAM with on-chip arbitration logic and open-drain BUSY outputs, while IDT7142LA35L48B is a SLAVE device with BUSY inputs and no arbitration capability. The IDT7132LA35L48B can operate standalone or control multiple IDT7142LA35L48B slaves in width-expanded configurations. They share identical speed (35 ns), package (FP48), and voltage specs, but are not pin-compatible due to reversed BUSY pin functionality.

What package type is used for the IDT7132LA35L48B?

IDT7132LA35L48B uses a 48-lead flatpack (FP48) package, a hermetically sealed ceramic package with dimensions approximately 0.75 in × 0.75 in × 0.11 in. It complies with MIL-PRF-38535 QML standards, providing enhanced reliability for high-vibration, high-humidity, or extended-temperature industrial and aerospace applications - distinct from plastic DIP or PLCC variants offered in the same family.

What is the standby current specification for IDT7132LA35L48B?

The IDT7132LA35L48B exhibits 0.2 mA typical full standby current (ISB3) when both ports are disabled with CMOS-level inputs (CE > VCC − 0.2 V), representing ultra-low power consumption ideal for energy-sensitive industrial nodes. In TTL-level standby (ISB1), it draws 25 mA max at industrial temperature - a key differentiator from SA-series parts, which consume up to 65 mA in the same condition.