Renesas 72265LA10PFG

Overview

IDT72265LA10PFG from Integrated Device Technology, Inc. is a high-speed, synchronous CMOS First-In-First-Out (FIFO) memory with 16,384 × 18-bit depth and 10 ns read/write cycle time. It supports independent read/write clocks, FWFT or IDT Standard timing modes, and programmable almost-empty/empty flags - used in telecom data buffering, video streaming interfaces, and network packet alignment where deterministic latency and deep buffering are critical.

For engineers reviewing the IDT72265LA10PFG datasheet, IDT72265LA10PFG pinout, IDT72265LA10PFG application, or IDT72265LA10PFG equivalent, key selection considerations include its 16,384-word depth, dual-clock domain operation, programmable flag offsets, industrial temperature range (–40°C to +85°C), and TQFP-64 package compatibility with legacy SuperSync FIFO designs.

Technical Context

This FIFO eliminates clock frequency dependency between RCLK and WCLK - no FS pin required - enabling fully asynchronous clock domains up to 100 MHz. Its fixed first-word latency (3 RCLK cycles in FWFT mode) and retransmit function support real-time replay of buffered data without pointer corruption.

The device integrates dual offset registers for PAE/PAF flags, configurable via serial (28-bit stream) or parallel load during Master Reset. Flag logic is mode-aware: EF/OR and FF/IR share pins but behave differently in IDT Standard vs. FWFT mode, with triple-buffered OR output and double-buffered IR/EF/FF for noise immunity.

Key Specifications

Pinout & Package

64-pin Thin Quad Flat Pack (TQFP), PN64 order code PF, JEDEC MO-152 compliant. Body size 10 mm × 10 mm, 0.5 mm lead pitch, exposed pad not present.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IDT72265LA10PFG, the IDT72265LA15PFG trades 33% lower bandwidth for improved noise immunity and lower ICC1, while the NB3N502DG shifts to a different voltage and signaling standard - making it suitable only for greenfield LVDS-based systems, not legacy 5 V TTL designs.

Availability

IDT72265LA10PFG is available at Aetrix Electronics and suitable for telecom infrastructure, broadcast video equipment, industrial automation controllers, and network test instrumentation requiring stable component supply across extended product lifecycles.

Supply support for IDT72265LA10PFG 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, Inc. (IDT) is a fabless semiconductor company specializing in timing, memory interface, RF, and high-performance interconnect solutions for communications and computing markets.

IDT72265LA10PFG belongs to the SuperSync FIFO™ family, engineered for deterministic, low-latency data buffering in multi-clock-domain systems such as telecom switches, video processors, and protocol accelerators.

FAQ

What is the memory organization of the IDT72265LA10PFG?

The IDT72265LA10PFG implements a 16,384 × 18-bit synchronous FIFO memory array. This equates to 294,912 total bits of storage, organized as 16,384 addressable 18-bit words. The architecture supports independent read and write pointers, enabling simultaneous full-duplex operation across asynchronous clock domains without external arbitration logic.

Does the IDT72265LA10PFG support both IDT Standard and FWFT timing modes?

Yes, the IDT72265LA10PFG supports both timing modes. The mode is selected during Master Reset (MRS) based on the logic level of the FWFT/SI pin: LOW selects IDT Standard mode (EF/FF flags, REN required for all reads), HIGH selects First Word Fall Through mode (OR/IR flags, first word appears after 3 RCLK edges without REN). Both modes are fully supported in the IDT72265LA10PFG datasheet and functional block diagram.

What package type is used for the IDT72265LA10PFG?

The IDT72265LA10PFG is packaged in a 64-pin Thin Quad Flat Pack (TQFP) with order code PF, per JEDEC MO-152. It measures 10 mm × 10 mm with 0.5 mm lead pitch and is RoHS-compliant. The "PFG" suffix explicitly denotes this green (lead-free) TQFP variant, distinct from legacy SnPb versions now in EOL.

Can the programmable almost-empty and almost-full flags be customized on the IDT72265LA10PFG?

Yes, the IDT72265LA10PFG supports full customization of PAE and PAF flag thresholds. Default offsets of 127 or 1,023 words are selected at Master Reset via the LD pin. These can be overwritten via serial programming (28-bit stream via SI/FWFT-SI pin) or parallel programming (via D0–D17), allowing runtime adjustment of buffer watermarking for adaptive flow control in protocol stacks.

Is the IDT72265LA10PFG suitable for industrial temperature operation?

Yes, the IDT72265LA10PFG is rated for industrial temperature operation from –40°C to +85°C. This specification is explicitly stated in the datasheet's "Commercial and Industrial Temperature Ranges" header and confirmed in the Recommended DC Operating Conditions table. It is qualified for use in base stations, factory automation controllers, and outdoor video encoders requiring extended thermal resilience.