Renesas 72V01L15JG8

Overview

IDT72V01L15JG8 from Renesas Electronics (formerly IDT) is a 3.3 V CMOS asynchronous FIFO memory with 512 × 9-bit depth, 15 ns access time, and industrial temperature range (–40°C to +85°C). It supports simultaneous read/write operations, features Empty/Full/Half-Full status flags, and operates in single-device or width/depth expansion configurations for data buffering in rate-mismatched systems.

For engineers reviewing the IDT72V01L15JG8 datasheet, IDT72V01L15JG8 pinout, IDT72V01L15JG8 application, or IDT72V01L15JG8 equivalent, this device serves as a low-power, timing-flexible first-in/first-out buffer for serial interface bridging, DSP-to-processor data handshaking, and multi-clock domain synchronization where deterministic latency and flag-driven flow control are required.

Technical Context

The IDT72V01L15JG8 implements a dual-port ring-pointer architecture with no external address bus - data is loaded and unloaded sequentially via Write (W) and Read (R) strobes. Its 9-bit data width supports parity or control bit insertion, enabling error-checked communication protocols.

It delivers 15 ns access time at 3.3 V, with active power consumption ≤60 mA (≤180 mW) and standby current ≤5 mA (≤18 mW). The FL/RT pin serves dual roles: First Load in depth expansion mode and Retransmit in single-device mode, resetting the read pointer without affecting write pointer position.

Key Specifications

Pinout & Package

Package: 32-pin Plastic Leaded Chip Carrier (PLCC, J32-1), lead finish SnPb (EOL as of June 15, 2018).

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74V293-15PGG and 72V2115L15TF, IDT72V01L15JG8 offers unique hardware retransmit and proven PLCC reliability in industrial vibration environments, though it requires SnPb assembly and has higher active current.

Availability

IDT72V01L15JG8 is available at Aetrix Electronics and suitable for industrial serial bridges, DSP-to-microcontroller interfaces, and multi-processor synchronization requiring stable component supply and long-term obsolescence management.

Supply support for IDT72V01L15JG8 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

Renesas Electronics Corporation is a global semiconductor leader delivering microcontrollers, analog, power, and connectivity solutions for automotive, industrial, and IoT applications.

IDT72V01L15JG8 belongs to Renesas' legacy FIFO memory product line, designed specifically for deterministic, low-latency data buffering across asynchronous clock domains in industrial control and communications infrastructure.

FAQ

What is the maximum operating frequency supported by IDT72V01L15JG8?

IDT72V01L15JG8 supports a maximum shift frequency of 40 MHz under commercial conditions, derived from its 15 ns access time and timing margins. This enables reliable operation in systems with 25 ns minimum cycle times, such as those interfacing with 33 MHz PCI or legacy microcontrollers. The device does not require a system clock - timing is controlled entirely by W and R strobes.

Does IDT72V01L15JG8 support parity checking?

Yes, IDT72V01L15JG8 supports parity checking through its 9-bit data width: eight bits carry user data while the ninth bit can be assigned as even or odd parity. This is explicitly enabled by the device's architecture - the RAM array stores all nine bits, and the FIFO logic preserves bit ordering end-to-end without modification.

Can IDT72V01L15JG8 be used in depth expansion mode with other speed grades?

No - depth expansion requires identical access time (t_A) across all daisy-chained devices. Mixing IDT72V01L15JG8 (15 ns) with L25 or L35 variants violates timing closure in the expansion chain, as XO propagation delay and flag synchronization depend on matched internal timing parameters.

Is the FL/RT pin bidirectional or configurable via register?

The FL/RT pin is hardwired for dual functionality based on XI state: when XI = LOW (single-device mode), FL/RT acts as Retransmit (active-Low pulse); when XI = HIGH (depth expansion), it functions as First Load (active-Low). No internal register configures this behavior - it is determined solely by the external XI voltage level.

What happens to the read pointer during a retransmit operation on IDT72V01L15JG8?

During a retransmit operation (FL/RT pulsed LOW while XI = LOW), the internal read pointer is reset to location zero, enabling replay of the entire FIFO contents from the beginning. The write pointer remains unchanged, preserving all buffered data - this allows seamless retry without data loss or host-side buffer management.