Renesas 7203L15TPGI

Overview

IDT7203L15TPGI from Integrated Device Technology is a 2,048 x 9-bit asynchronous CMOS FIFO memory buffer with 15 ns access time, industrial temperature range (–40°C to +85°C), and thin plastic DIP-28 package. It supports simultaneous read/write operations, features Empty/Full/Half-Full status flags, retransmit capability, and is used in data rate buffering between mismatched-speed subsystems in industrial control and communications interfaces.

For engineers reviewing the IDT7203L15TPGI datasheet, IDT7203L15TPGI pinout, IDT7203L15TPGI application, or IDT7203L15TPGI equivalent, key selection criteria include its 15 ns access time, 9-bit data width with parity/control bit option, dual-port asynchronous operation, industrial-grade reliability, and compatibility within the IDT720x family for depth/width expansion.

Technical Context

The IDT7203L15TPGI implements a first-in/first-out dual-port memory architecture using high-speed CMOS technology with independent read and write pointers. It uses Full (FF), Empty (EF), and Half-Full (XO/HF) flags to prevent overflow/underflow and supports retransmit (RT) to reset the read pointer without affecting the write pointer.

It operates in Single Device Mode when Expansion In (XI) is grounded, enabling 2,048-word buffering. The device supports width expansion (e.g., 18-bit via parallel devices) and depth expansion (daisy-chained via XI/XO), though RT and HF are disabled in depth expansion mode.

Key Specifications

Pinout & Package

Package: 28-pin Plastic Thin DIP (TP), lead-free (green) compliant, industrial temperature grade.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IDT7203L15TPGI, IDT7203L15JGI offers higher reliability and surface-mount compatibility at the cost of larger footprint and non-drop-in replacement, while CY7C4255V-15AC trades retransmit capability and flag compatibility for lower unit cost and SOIC packaging.

Availability

IDT7203L15TPGI is available at Aetrix Electronics and suitable for industrial PLC interfaces, legacy bus bridges, motor drive feedback capture, and test equipment pattern generation requiring stable component supply and long-term obsolescence management.

Supply support for IDT7203L15TPGI 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, is a fabless semiconductor company specializing in timing, memory interface, RF, and high-performance interconnect solutions.

IDT7203L15TPGI belongs to the IDT720x family of asynchronous FIFOs, designed specifically for deterministic data buffering in mixed-clock-domain systems such as industrial automation, telecom infrastructure, and test instrumentation.

FAQ

What is the memory organization and access time of the IDT7203L15TPGI?

The IDT7203L15TPGI is a 2,048 × 9-bit asynchronous FIFO with a maximum access time of 15 ns. This configuration provides 2,048 words of storage, each 9 bits wide - the ninth bit is user-assignable for parity checking or control signaling. Its 15 ns t_A rating ensures compatibility with systems operating up to ~33 MHz shift frequency under industrial temperature conditions.

Does the IDT7203L15TPGI support retransmit functionality, and how is it implemented?

Yes, the IDT7203L15TPGI supports retransmit via the FL/RT pin. When pulsed LOW, this input resets the internal read pointer to the first memory location without altering the write pointer or stored data. This feature is active only in Single Device or Width Expansion modes - it is disabled in Depth Expansion configurations. The IDT7203L15TPGI's retransmit capability enables deterministic replay of buffered data streams, essential for protocol recovery and diagnostic trace capture.

What are the operating voltage and temperature specifications for the IDT7203L15TPGI?

The IDT7203L15TPGI operates from 4.5 V to 5.5 V DC and is rated for the industrial temperature range of –40°C to +85°C. These specifications are validated per the manufacturer's DC and AC electrical characteristics tables, with active current ≤120 mA and power-down current ≤2 mA. The device meets these ratings in its specified thin plastic DIP (TP) package, making it suitable for harsh industrial environments without thermal derating.

How does the IDT7203L15TPGI handle full and empty conditions during read/write operations?

The IDT7203L15TPGI uses dedicated open-drain status flags: FF (Full Flag) goes LOW to inhibit further writes when memory is full; EF (Empty Flag) goes LOW to inhibit further reads when memory is empty. Both flags respond within defined timing windows (e.g., tWEF ≤25 ns, tRFF ≤25 ns) after respective write/read edges. These hardware signals allow external controllers to manage data flow autonomously without software intervention - a core design advantage of the IDT7203L15TPGI in real-time systems.

Is the IDT7203L15TPGI pin-compatible with other members of the IDT720x FIFO family?

Yes, the IDT7203L15TPGI is pin- and functionally compatible with the broader IDT720x family (IDT7203 through IDT7208) in the same package variant. All share identical pinouts, control signal definitions (W, R, RS, FL/RT, XI, etc.), and flag behaviors. This allows direct substitution for capacity scaling - e.g., replacing IDT7203L15TPGI with IDT7204L15TPGI increases depth to 4,096 × 9 - provided PCB layout and timing margins accommodate the larger memory array's access characteristics.