Renesas 7204L12JG8

Overview

IDT7204L12JG8 from Integrated Device Technology is a 4,096 × 9-bit asynchronous CMOS FIFO memory buffer with 12 ns access time, designed for high-speed data buffering in multiprocessing and rate-matching applications. It features dual-port operation, retransmit capability, and status flags (Empty, Full, Half-Full) to prevent overflow/underflow. Used in industrial communication interfaces requiring deterministic latency and reliable handshaking.

For engineers reviewing the IDT7204L12JG8 datasheet, IDT7204L12JG8 pinout, IDT7204L12JG8 application, or IDT7204L12JG8 equivalent, key selection criteria include its 12 ns access time, 5 V supply compatibility, PLCC-32 package, asynchronous read/write independence, and support for depth/width expansion in embedded control and test equipment.

Technical Context

The IDT7204L12JG8 implements a fully asynchronous dual-port architecture with independent write and read pointers managed by internal logic. It supports single-device mode (with XI grounded) and depth expansion (via XO/HF and XI chaining), but disables retransmit and half-full flag in expansion modes.

Its 9-bit data width accommodates 8-bit data plus parity/control bit, and it uses TTL-compatible input thresholds (VIH = 2.0 V min, VIL = 0.8 V max) with CMOS output drive (VOH ≥ 2.4 V at –2 mA, VOL ≤ 0.4 V at 8 mA). Power consumption is 660 mW active max and 44 mW power-down max.

Key Specifications

Pinout & Package

Package: 32-lead Plastic Leaded Chip Carrier (PLCC), J-lead variant, body size 11.43 mm × 11.43 mm, compliant with MIL-STD-883 Class B for industrial reliability.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC100E131FN and 23LC1024-I/P, IDT7204L12JG8 delivers native 5 V asynchronous FIFO functionality with hardware flags and retransmit-reducing firmware complexity and eliminating external glue logic in industrial control and ATE systems.

Availability

IDT7204L12JG8 is available at Aetrix Electronics and suitable for industrial data acquisition, legacy bus bridging, automated test equipment, and serial-to-parallel protocol conversion requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for IDT7204L12JG8 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 real-time interconnect solutions.

IDT7204L12JG8 belongs to the IDT720x family of high-speed asynchronous FIFOs, engineered for deterministic data buffering in industrial, military, and communications systems where clock domain isolation and hardware flow control are critical.

FAQ

What is the operating temperature range of the IDT7204L12JG8?

The IDT7204L12JG8 is rated for industrial temperature operation from –40°C to +85°C. This range is validated per manufacturer specifications and supports deployment in harsh environments such as factory automation controllers and outdoor instrumentation without thermal derating.

Does the IDT7204L12JG8 support simultaneous read and write operations?

Yes, the IDT7204L12JG8 supports fully asynchronous and simultaneous read and write operations. Its dual-port architecture uses independent internal pointers, allowing data to be written via W and read via R concurrently without contention or arbitration logic.

How does the retransmit (RT) function work on the IDT7204L12JG8?

The IDT7204L12JG8's RT function resets the internal read pointer to the first memory location when FL/RT is pulsed LOW. The write pointer remains unchanged, enabling repeat-read of buffered data-valuable for protocol retries and diagnostic replay without rewriting.

What package type is used for the IDT7204L12JG8?

IDT7204L12JG8 uses a 32-lead Plastic Leaded Chip Carrier (PLCC) package, identified by the "J" suffix in the part number. It features gull-wing leads, 11.43 mm × 11.43 mm body size, and is qualified for industrial reliability per MIL-STD-883 Class B.

Can the IDT7204L12JG8 be expanded beyond its native 4,096-word depth?

Yes, the IDT7204L12JG8 supports depth expansion via its XI and XO/HF pins. Multiple devices can be daisy-chained to build larger FIFOs (e.g., 3 × IDT7204L12JG8 = 12,288 × 9), though RT and HF functions are disabled in this mode per datasheet specification.