Renesas IDT71V416VL15BE

Overview

IDT71V416VL15BE from Integrated Device Technology is a 4-Mbit (256K × 16) high-speed CMOS static RAM with 15 ns access time, single 3.3 V supply operation, and LVTTL-compatible bidirectional I/O. It features separate byte enable (BHE/BLE), output enable (OE), and chip select (CS) for flexible memory control in embedded controllers and communication buffers.

For engineers reviewing the IDT71V416VL15BE datasheet, IDT71V416VL15BE pinout, IDT71V416VL15BE application, or IDT71V416VL15BE equivalent, key selection criteria include 15 ns read cycle time, industrial temperature range (–40°C to +85°C), SOJ-44 package compatibility, and low-power standby current of 10 mA max.

Technical Context

The IDT71V416VL15BE implements fully static asynchronous circuitry-no clocks or refresh required-and uses JEDEC-standard center power/ground pinout to minimize switching noise. Its dual-byte enable architecture supports independent high- and low-byte writes without external logic.

Address decoding is internal and fully decoded across A0–A17; all control inputs (CS, OE, WE, BHE, BLE) are active-low and LVTTL-compatible. Output drivers support 8 mA sink and –4 mA source capability at VDD = 3.0 V, ensuring robust signal integrity in bus-shared environments.

Key Specifications

Pinout & Package

44-pin plastic SOJ (SO44-1) package with JEDEC-standard center power/ground layout for noise reduction. Pin 28 is NC or optionally tied to VSS.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed SRAM applications.

Compared with CY62167EV30LL-15ZSXI and AS6C4008-15TIN, the IDT71V416VL15BE offers native LVTTL-compliant byte enables and SOJ-44 packaging optimized for legacy industrial board layouts, reducing interface complexity and layout risk.

Availability

IDT71V416VL15BE is available at Aetrix Electronics and suitable for industrial PLCs, telecom line cards, medical imaging subsystems, and avionics display controllers requiring stable component supply across extended lifecycles.

Supply support for IDT71V416VL15BE 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 IDT71V416VL15BE belongs to IDT's legacy 3.3 V SRAM product line, engineered specifically for deterministic, low-latency memory expansion in noise-sensitive industrial and telecom equipment.

FAQ

What is the operating temperature range for the IDT71V416VL15BE?

The IDT71V416VL15BE is rated for industrial temperature operation from –40°C to +85°C. This specification is guaranteed across all AC and DC parameters in the datasheet, including access time, standby current, and I/O drive strength. The "I" suffix in the part number explicitly denotes industrial qualification, making IDT71V416VL15BE suitable for deployment in factory automation, outdoor telecom cabinets, and transportation control systems where ambient conditions exceed commercial limits.

Does the IDT71V416VL15BE require a refresh clock or external timing control?

No, the IDT71V416VL15BE uses fully static CMOS design and requires no refresh clock, timing controller, or periodic access to retain data. All operations are asynchronous and governed solely by CS, OE, WE, and byte enable signals. This eliminates refresh-related timing constraints and simplifies integration into FPGA-, MCU-, or ASIC-based systems where deterministic latency is critical - a key advantage of IDT71V416VL15BE over DRAM or pseudo-SRAM alternatives.

What package type does the IDT71V416VL15BE use, and is it RoHS compliant?

The IDT71V416VL15BE uses a 44-pin, 400-mil plastic SOJ (SO44-1) package. Per the ordering information in the datasheet, the "BE" suffix indicates lead-free (RoHS-compliant) construction. The package features JEDEC-standard center VDD/VSS placement to suppress ground bounce, and its SOJ form factor supports wave-soldering and rework-friendly hand assembly - both validated for IDT71V416VL15BE in production environments.

How does the byte enable functionality work on the IDT71V416VL15BE?

The IDT71V416VL15BE provides two independent active-low byte enable inputs: BHE (high byte, I/O8–I/O15) and BLE (low byte, I/O0–I/O7). When only one is asserted with CS and WE low, only the corresponding 8-bit half-word is written; both must be low for full 16-bit writes. This native hardware support eliminates external AND gates or FPGA logic for partial writes - a defining feature of IDT71V416VL15BE that improves timing margin and reduces BOM count.

What is the maximum output drive capability of the IDT71V416VL15BE I/O pins?

The IDT71V416VL15BE I/O pins deliver guaranteed LVTTL-compatible drive: VOH ≥ 2.4 V at IOH = –4 mA (high-level source), and VOL ≤ 0.4 V at IOL = 8 mA (low-level sink), tested at VDD = 3.0 V and TA = +85°C. These values ensure robust noise margins and bus loading capability across the full industrial temperature range - a verified performance metric for IDT71V416VL15BE, not derived from typical-only characterization.