Renesas 7134LA45P

Overview

IDT7134LA45P from Integrated Device Technology is a high-speed 4K × 8 dual-port static RAM with 45 ns read cycle time, TTL-compatible 5V ±10% operation, and battery-backed data retention down to 2V. It features fully asynchronous dual-port access, independent left/right control logic, and 1 μW typical standby power per port-enabling real-time inter-processor communication in military-grade embedded systems requiring zero-wait-state arbitration.

For engineers reviewing the IDT7134LA45P datasheet, IDT7134LA45P pinout, IDT7134LA45P application, or IDT7134LA45P equivalent, key selection criteria include dual-port contention management, 2V data retention capability, 48-pin plastic DIP package compatibility, and compliance with MIL-PRF-38535 QML for harsh-environment deployment.

Technical Context

The IDT7134LA45P implements two fully independent memory ports-left (L) and right (R)-each with dedicated address (A0L–A11L / A0R–A11R), data (I/O0L–I/O7L / I/O0R–I/O7R), and control lines (CEL/CER, OEL/OER, R/WL/R/WR). No on-chip arbitration is provided; external logic must resolve simultaneous access conflicts.

Its CMOS-based architecture supports true asynchronous operation: reads and writes may occur concurrently on either port, with tRC = 45 ns (max), tAOE = 25 ns (max), and tPD = 45 ns (max) for chip disable-to-power-down. The LA variant enables data retention at VCC = 2V with ICCDR ≤ 4000 µA across military temperature range (−55°C to +125°C).

Key Specifications

Pinout & Package

48-pin plastic DIP (P48-1) package with 0.6-inch width, 2.43-inch length, and 0.18-inch height. All VCC pins require local decoupling; all GND pins must be connected to system ground plane.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C134-45JC and IDT7133LA45P, the IDT7134LA45P uniquely delivers full 4K × 8 capacity with military-grade 2V data retention in a standard 48-pin DIP-making it the only option for legacy-replacement avionics designs requiring both capacity and survivability.

Availability

IDT7134LA45P is available at Aetrix Electronics and suitable for avionics flight data recorders, tactical radio baseband processors, and missile guidance inertial navigation units requiring stable component supply across extended product lifecycles.

Supply support for IDT7134LA45P 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), now part of Renesas Electronics, designs high-performance timing, memory, and interface solutions for communications, computing, and industrial markets.

The IDT7134 family was engineered specifically for deterministic, zero-wait-state inter-processor communication in safety-critical military and aerospace systems where external arbitration and data retention under power fault are mandatory.

FAQ

What is the maximum operating temperature range for the IDT7134LA45P?

The IDT7134LA45P is rated for −55°C to +125°C and manufactured in compliance with MIL-PRF-38535 QML, making it suitable for deployment in jet engine bays, missile canisters, and satellite payloads where extreme thermal cycling occurs. This specification is verified per the February 2013 datasheet revision DSC-2720/14.

Does the IDT7134LA45P support true dual-port contention resolution?

No-the IDT7134LA45P provides no internal arbitration logic. When both ports simultaneously access the same memory location, data integrity is the system designer's responsibility. External semaphores or priority encoders must be implemented, as confirmed in the Functional Description section of the datasheet.

What is the minimum supply voltage required to retain data in the IDT7134LA45P?

The IDT7134LA45P guarantees data retention at VCC ≥ 2.0 V, as specified in Table 7 (Data Retention Characteristics). This applies only to the LA variant and is validated across the full military temperature range; the SA variant does not support this feature.

Which package type does the IDT7134LA45P use?

The IDT7134LA45P uses a 48-pin plastic DIP (P48-1) package measuring approximately 0.55 in × 2.43 in × 0.18 in, as documented in Pin Configuration Note 3 and Ordering Information table on page 11 of the datasheet.

How does the standby current of the IDT7134LA45P compare between TTL and CMOS CE input levels?

At TTL-level CE inputs (VIH = 2.2 V min), ISB1 = 40 mA max (both ports); at CMOS-level CE inputs (CE > VCC − 0.2 V), ISB3 drops to 0.2 mA typical-enabling >50× power reduction in deep-sleep modes, per Table 6b DC Electrical Characteristics.