Renesas 72V241L10PFG

Overview

72V241L10PFG from Integrated Device Technology (IDT) is a 4,096 × 9-bit synchronous FIFO memory IC operating at 3.3 V with 10 ns read/write cycle time, dual-clock operation support, and programmable Almost-Empty/Almost-Full flags. It serves as a high-speed data buffer in interprocessor communication, LAN interfaces, and graphics subsystems where deterministic latency and clock domain bridging are required.

For engineers reviewing the 72V241L10PFG datasheet, 72V241L10PFG pinout, 72V241L10PFG application, or 72V241L10PFG equivalent, key selection criteria include its 9-bit bidirectional data width, industrial temperature range (–40°C to +85°C), 5 V-tolerant inputs, zero fall-through time architecture, and configurable flag offsets for system-level flow control.

Technical Context

The 72V241L10PFG implements a dual-ported, clocked FIFO architecture with independent WCLK/RCLK domains and synchronized status flags (EF/FF aligned to RCLK/WCLK respectively). Its internal RAM array holds exactly 4,096 words of 9-bit data, and it supports both single-clock (RCLK = WCLK) and asynchronous dual-clock modes.

Flag logic includes two fixed outputs (EF, FF) and two programmable flags (PAE, PAF), each configurable via a 4-byte offset register loaded using the WEN2/LD pin during reset-initiated state machine sequencing. The device defaults PAE to Empty+7 and PAF to Full−7, and supports 5 V-tolerant inputs while powered from a 3.3 V supply.

Key Specifications

Pinout & Package

72V241L10PFG is packaged in a 32-pin plastic Thin Quad FlatPack (TQFP), PR32-1 footprint, with 0.8 mm lead pitch and exposed thermal pad (not electrically connected). Pin numbering follows standard TQFP top-view orientation with index mark at Pin 1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar FIFO memory applications.

Compared with IDT72V241L15PFG and CY7C4255V-10ASC, the 72V241L10PFG delivers the highest guaranteed speed (100 MHz), native 5 V tolerance for mixed-voltage systems, and flexible flag configuration via WEN2/LD-making it optimal for new designs requiring maximum bandwidth and interface flexibility.

Availability

72V241L10PFG is available at Aetrix Electronics and suitable for interprocessor communication, LAN interface buffering, and graphics subsystems requiring stable component supply across extended product lifecycles.

Supply support for 72V241L10PFG 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 signal conditioning solutions before its acquisition by Renesas Electronics in 2019.

The IDT72V2xx family was designed specifically for high-reliability, low-latency data buffering in industrial and communications infrastructure-emphasizing deterministic timing, wide temperature operation, and robust flag signaling for real-time systems.

FAQ

What is the memory organization of the 72V241L10PFG?

The 72V241L10PFG features a 4,096 × 9-bit synchronous FIFO memory array, meaning it stores up to 4,096 words, each 9 bits wide. This configuration supports applications requiring moderate-depth buffering-such as Ethernet frame storage or video line buffering-without external memory expansion. The 9-bit width accommodates parity or control bits alongside 8-bit data.

Does the 72V241L10PFG support asynchronous clock domains?

Yes, the 72V241L10PFG fully supports asynchronous operation: its WCLK and RCLK inputs may run at different frequencies and phases. The EF and PAE flags are synchronized to RCLK, while FF and PAF are synchronized to WCLK-ensuring reliable status reporting in each domain. This eliminates metastability concerns in clock-domain-crossing scenarios.

How are the programmable Almost-Empty and Almost-Full flags configured on the 72V241L10PFG?

The 72V241L10PFG uses the WEN2/LD pin in conjunction with WEN1 and WCLK to load 4-byte offset values into internal registers during reset-initiated sequences. Default offsets are Empty+7 and Full−7. Configuration requires asserting WEN2/LD = LOW at reset, then toggling WCLK four times to write LSB/MSB of Empty and Full offsets-enabling precise buffer watermark control.

Is the 72V241L10PFG compatible with 5 V logic systems?

Yes-the 72V241L10PFG has 5 V-tolerant inputs (D0–D8, WCLK, RCLK, WEN1, WEN2/LD, REN1, REN2, RS, OE), allowing direct connection to 5 V microcontrollers or FPGAs while operating from a 3.3 V supply. No external level shifters are needed, simplifying interface design and reducing board area and cost.

What package options are available for the 72V241L10PFG?

The 72V241L10PFG is offered in a 32-pin plastic Thin Quad FlatPack (TQFP) with order code PF, designated PR32-1 footprint. An equivalent PLCC-32 (J32-1, order code J) variant exists for the same family, but the PFG suffix confirms the TQFP packaging-suitable for automated SMT assembly and high-density layouts.