Renesas IDT71V416VL12Y

Overview

IDT71V416VL12Y from Integrated Device Technology is a 256K × 16-bit (4 Mbit), 3.3V CMOS asynchronous static RAM with 12 ns access time, JEDEC-compliant center-power/ground pinout, and dual byte enable (BHE/BLE) for 8-bit subword access-used in legacy industrial control, telecom line cards, and FPGA configuration memory buffers.

For engineers reviewing the IDT71V416VL12Y datasheet, IDT71V416VL12Y pinout, IDT71V416VL12Y application, or IDT71V416VL12Y equivalent, key selection criteria include 12 ns read cycle time, LVTTL-compatible I/O, single 3.3V supply operation, industrial temperature range (–40°C to +85°C), and SOJ/TSOP/BGA package compatibility in embedded memory subsystems.

Technical Context

The IDT71V416VL12Y implements fully static asynchronous circuitry-no clocks or refresh required-and uses high-reliability CMOS fabrication optimized for low-noise, high-speed random access. Its address decoding supports A0–A17 (18-bit addressing), enabling direct 256K-word mapping without external logic.

Control architecture includes independent Chip Select (CS), Output Enable (OE), Write Enable (WE), and byte-select pins (BHE/BLE), allowing flexible word/byte read-write operations with guaranteed tAA ≤ 12 ns, tRC = 12 ns, and tOE ≤ 6 ns under industrial conditions at VDD = 3.0–3.6 V.

Key Specifications

Pinout & Package

Available in 44-pin, 400-mil plastic SOJ (SO44-1) and TSOP Type II (SO44-2) packages; pinout conforms to JEDEC standard with center VDD/VSS 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 asynchronous SRAM applications.

Compared with CY62148EV30LL-45ZAXI and AS6C4008-12BIN, the IDT71V416VL12Y uniquely delivers industrial temperature rating, JEDEC noise-optimized pinout, and dual byte enables within a 12 ns timing envelope-making it irreplaceable for deterministic real-time embedded memory subsystems.

Availability

IDT71V416VL12Y is available at Aetrix Electronics and suitable for industrial PLC memory buffers, telecom line card data caches, and FPGA configuration stores requiring stable component supply across extended lifecycle programs.

Supply support for IDT71V416VL12Y 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 U.S.-based semiconductor company specializing in timing, memory interface, RF, and high-performance interconnect solutions before its acquisition by Renesas in 2019.

The IDT71V416VL12Y belongs to IDT's legacy 3.3V high-speed SRAM product line, engineered for deterministic, low-latency memory interfacing in industrial and telecom infrastructure where refresh-free operation and noise immunity are critical.

FAQ

What is the maximum clock frequency supported by IDT71V416VL12Y?

IDT71V416VL12Y is an asynchronous SRAM and does not use a clock signal. Its performance is defined by access and cycle times: tAA ≤ 12 ns and tRC = 12 ns, enabling reliable operation with bus frequencies up to 83 MHz (1/12 ns) when interfaced to controllers with appropriate timing margins. The IDT71V416VL12Y requires no clock input or synchronization logic.

Does IDT71V416VL12Y support byte-level writes?

Yes, IDT71V416VL12Y supports independent byte-level writes via dedicated BHE (high-byte enable) and BLE (low-byte enable) inputs. When only BHE is asserted, I/O8–I/O15 are written while I/O0–I/O7 remain unchanged; asserting only BLE writes I/O0–I/O7. This functionality is confirmed in the truth table and timing diagrams of the official datasheet for IDT71V416VL12Y.

What package types are offered for IDT71V416VL12Y?

IDT71V416VL12Y is available in three package variants: 44-pin, 400-mil plastic SOJ (SO44-1), 44-pin TSOP Type II (SO44-2), and 48-ball BGA (9 mm × 9 mm). The "Y" suffix in IDT71V416VL12Y specifically denotes the 44-pin SOJ package per IDT's ordering nomenclature in the datasheet.

Is IDT71V416VL12Y compatible with 5V TTL logic levels?

No, IDT71V416VL12Y is strictly LVTTL-compatible with VIH(min) = 2.0 V and VIL(max) = 0.8 V at VDD = 3.3 V. It is not 5V-tolerant: absolute maximum input voltage is VDD + 0.5 V (≤ 4.1 V), and applying 5V signals risks permanent damage. Level translation is required for interfacing with 5V systems, unlike some older 5V SRAMs.

What is the standby current specification for IDT71V416VL12Y?

IDT71V416VL12Y specifies ISB1 ≤ 10 mA (max) for full standby current when CS > VHC and no address or control transitions occur (f = 0). This value is guaranteed across the industrial temperature range (–40°C to +85°C) and represents static leakage only-distinct from dynamic standby current ISB, which is ≤ 45 mA at fMAX. Both values are documented in Table 8 of the IDT71V416VL12Y datasheet.