Renesas 7134SA25P

Overview

IDT7134SA25P from Integrated Device Technology is a high-speed 4K × 8 dual-port static RAM with 25 ns read cycle time, TTL-compatible 5 V ±10% operation, and industrial temperature range (–40°C to +85°C). It features fully asynchronous dual-port access, independent left/right control logic, and 700 mW typical active power dissipation. Used in real-time inter-processor communication systems requiring zero-wait-state memory arbitration.

For engineers reviewing the IDT7134SA25P datasheet, IDT7134SA25P pinout, IDT7134SA25P application, or IDT7134SA25P equivalent, key selection considerations include dual-port timing isolation, CE-controlled standby power management (ISB1 = 25 mA), 48-pin plastic DIP package compatibility, and absence of on-chip arbitration logic-requiring external contention resolution.

Technical Context

The IDT7134SA25P implements two fully independent memory ports sharing a single 4K × 8-bit SRAM array, each with dedicated address (A0–A11), data (I/O0–I/O7), and control lines (CE, OE, R/W). No internal arbitration logic exists-simultaneous access to the same address requires external hardware or software coordination to prevent data corruption.

It uses CMOS process technology with TTL-level input thresholds (VIH = 2.2 V min, VIL = 0.8 V max) and supports both CE-controlled and R/W-controlled write cycles. Power-down is managed per port via CE high, enabling ISB1 (both ports TTL standby) at 25 mA typical and ISB3 (both ports CMOS standby) at 1.0 mA typical under full CMOS-level input conditions.

Key Specifications

Pinout & Package

Package: 48-pin plastic DIP (P48-1), body dimensions ≈ 0.55 in × 2.43 in × 0.18 in. All VCC and GND pins must be externally decoupled per datasheet layout guidelines.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C133-25JC and AS7C34098B-25JC, the IDT7134SA25P uniquely combines industrial temperature qualification, 48-pin DIP compatibility, and proven dual-port timing isolation-making it the sole drop-in solution for legacy-replacement industrial control upgrades.

Availability

IDT7134SA25P is available at Aetrix Electronics and suitable for real-time inter-processor communication, digital signal processing co-processing, and redundant control system memory requiring stable component supply across extended product lifecycles.

Supply support for IDT7134SA25P 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) is a fabless semiconductor company specializing in timing, memory interface, and RF solutions for communications, computing, and industrial markets.

The IDT7134SA series belongs to IDT's high-speed dual-port SRAM product line, designed specifically for deterministic, zero-wait-state memory sharing between independent processors in mission-critical embedded systems.

FAQ

What is the maximum operating temperature range for the IDT7134SA25P?

The IDT7134SA25P is rated for industrial temperature operation from –40°C to +85°C. This specification is validated per the datasheet's Recommended Operating Temperature and Supply Voltage table and applies across all electrical parameters including tRC = 25 ns max and ICC = 140 mA typical. The part does not support military or extended temperature grades.

Does the IDT7134SA25P support battery backup data retention?

No, the IDT7134SA25P does not support battery backup data retention. That feature is exclusive to the LA variant (e.g., IDT7134LA25P), which specifies VDR = 2.0 V minimum and ICCDR ≤ 4000 µA. The "SA" suffix denotes standard power operation only, with no data retention capability below 4.5 V.

What package type is used for the IDT7134SA25P?

The IDT7134SA25P uses a 48-pin plastic DIP (P48-1) package, with physical dimensions approximately 0.55 in × 2.43 in × 0.18 in. This is confirmed in the Pin Configurations section of the datasheet and distinguishes it from LCC, PLCC, or Flatpack variants denoted by different suffixes (e.g., "J", "L48", "F").

How does the IDT7134SA25P handle simultaneous access to the same memory location from both ports?

The IDT7134SA25P provides no internal arbitration-simultaneous access to the same address from left and right ports may cause data corruption. The datasheet explicitly states it is "the user's responsibility to ensure data integrity" in such cases. External hardware (e.g., semaphores) or software protocols must coordinate access to prevent contention.

What is the typical active current consumption of the IDT7134SA25P during operation?

The IDT7134SA25P draws 140 mA typical dynamic operating current (ICC) when both ports are active and outputs are disabled, measured at fMAX with VCC = 5.0 V and TA = +25°C. This value scales with frequency and is specified in the DC Electrical Characteristics table for the "7134X25" speed grade under commercial and industrial conditions.