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Renesas 72V04L25JGI8
- Part No.:
- 72V04L25JGI8
- Manufacturer:
- Renesas
- Category:
- FIFOs Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
72V04L25JGI8.pdf
- Description:
- IC FIFO ASYNC 4KX9 25NS 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,202
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Product details
Overview
72V04L25JGI8 from Renesas Electronics (formerly IDT) is a 3.3 V CMOS asynchronous FIFO memory with 4,096 × 9-bit depth/width organization, 25 ns access time, industrial temperature range (–40°C to +85°C), and PLCC-32 package. It supports simultaneous read/write, auto-retransmit, and status flags (Empty, Full, Half-Full), used in rate-matching buffers for serial communication interfaces.
For engineers reviewing the 72V04L25JGI8 datasheet, 72V04L25JGI8 pinout, 72V04L25JGI8 application, or 72V04L25JGI8 equivalent, key selection considerations include its 4,096-word depth, 9-bit data width with parity support, 25 ns timing grade, industrial-grade reliability, and compatibility with legacy IDT720x systems requiring asynchronous buffering without clock domain synchronization.
Technical Context
This device implements a dual-port, first-in/first-out architecture using ring pointers-no external address bus required-and operates fully asynchronously with independent read (R) and write (W) control lines. Its internal RAM array is 4,096 × 9 bits, enabling storage of 4,096 words with 9-bit data paths for payload plus parity.
It features three status flags (EF, FF, XO/HF) driven directly by pointer comparison logic, supports single-device and depth/width expansion modes via XI/XO pins, and includes retransmit (FL/RT) functionality that resets the read pointer without affecting the write pointer-enabling repeat transmission from buffer start.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Depth × Width | 4,096 × 9 bits - supports up to 4,096 data words with 9-bit parallel I/O, suitable for UART/RS-485 protocol framing with embedded parity bit. |
| Access Time (tA) | 25 ns max - defines minimum cycle time for valid data output after read enable assertion; enables operation at ≤28.5 MHz shift frequency. |
| Supply Voltage | 3.0 V to 3.6 V - compatible with 3.3 V logic systems; eliminates need for level-shifting in modern low-voltage digital designs. |
| Power Consumption | Active: 60 mA max (198 mW at 3.3 V); Power-down: 5 mA max - reduces thermal load in dense PCB layouts and extends battery life in portable rate-buffering applications. |
| Operating Temperature | –40°C to +85°C - qualified for industrial environments including factory automation, motor control, and outdoor communications equipment. |
| Package | 32-pin PLCC (J32-1) - surface-mount compatible with standard reflow profiles; provides mechanical robustness and thermal dissipation for long-term reliability. |
| Status Flags | EF (Empty), FF (Full), XO/HF (Expansion Out / Half-Full) - hardware-signaled boundary conditions eliminate software polling overhead in real-time systems. |
Pinout & Package
72V04L25JGI8 is housed in a 32-pin Plastic Leaded Chip Carrier (PLCC, order code J) with gull-wing leads and index corner marking. The package is RoHS-compliant (Green, G-suffix), lead-free, and rated for industrial temperature operation.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| D0–D8 | Data Input Bus | 9-bit parallel input path; accepts data on falling edge of W; supports parity bit assignment per system requirement. |
| Q0–Q8 | Data Output Bus | 9-bit tristate outputs enabled during active read; high-impedance when R = HIGH to prevent bus contention. |
| W | Write Enable | Falling-edge triggered write strobe; initiates sequential storage into RAM array without address management. |
| R | Read Enable | Falling-edge triggered read strobe; outputs next word in FIFO sequence; EF flag disables further reads when asserted. |
| RS | Reset Input | Active-Low synchronous reset; initializes both read and write pointers to location zero; required before first write. |
| FL/RT | First Load / Retransmit | In single-device mode: Retransmit (RT) resets read pointer to start; in depth expansion: First Load (FL) configures master device. |
| XI | Expansion In | Grounded in single-device mode; tied to XO of prior device in daisy-chain depth expansion configurations. |
| XO/HF | Expansion Out / Half-Full Flag | In single-device mode: HF asserts LOW when ≥50% full; in expansion mode: pulses to next device upon reaching last location. |
| EF | Empty Flag | Open-drain output; goes LOW when read pointer = write pointer, preventing underflow during read operations. |
| FF | Full Flag | Open-drain output; goes LOW when write pointer = (read pointer – 1), blocking writes to prevent overflow. |
| VCC | Power Supply | +3.3 V supply (3.0–3.6 V range); decoupling capacitor required near pin for noise immunity in high-speed operation. |
| GND | Ground Reference | Signal and power ground reference; must be low-impedance connection to minimize ground bounce in simultaneous I/O transitions. |
Key Features
| Feature | Design Value |
|---|---|
| Asynchronous Dual-Port Operation | Independent R and W controls allow concurrent read/write without clock coordination-ideal for bridging mismatched data rates between processors and peripherals. |
| Auto-Retransmit Capability | Pulsing FL/RT LOW resets read pointer to start position while preserving write pointer state-enables error recovery and protocol retransmission without data loss. |
| Expandable Architecture | Supports unlimited depth expansion (via XI/XO daisy chain) and width expansion (parallel devices)-scalable from 4,096×9 to multi-kiloword or 18+ bit systems with minimal external logic. |
| Hardware Status Flag Logic | EF, FF, and HF flags generated internally from pointer comparisons-eliminates need for external monitoring circuitry or firmware polling in real-time interrupt-driven systems. |
| 9-Bit Data Path with Parity Support | Native 9-bit width allows dedicated bit for parity generation/checking-critical for noise-prone industrial serial links (e.g., Modbus RTU, CAN FD auxiliary channels). |
Applications
| Industrial Serial Bridge | Motor Control Feedback Buffer |
|---|---|
Use Scenario: Isolating UART-based PLC-to-HMI communication across galvanically separated domains with variable baud rates. IC Role / Device Role / Timing Role: Asynchronous rate buffer absorbing transmit/receive timing skew between master and slave devices. Use Value: Prevents data loss during burst transmissions by decoupling host processor timing from peripheral response latency using hardware-managed EF/FF signaling. |
Use Scenario: Capturing encoder pulse counts and analog feedback samples from multiple servo drives before batch upload to motion controller. IC Role / Device Role / Timing Role: First-in/first-out temporary storage for time-stamped sensor data streams prior to DMA transfer. Use Value: Enables deterministic sampling intervals despite variable controller interrupt latency; Half-Full Flag triggers early DMA prep to avoid overflow. |
| Legacy System Protocol Adapter | Test Equipment Pattern Generator |
Use Scenario: Adapting obsolete 5 V TTL FIFO-based instrumentation to modern 3.3 V FPGA-based test platforms. IC Role / Device Role / Timing Role: Pin-compatible drop-in replacement for IDT7204 with identical functional behavior and timing margins. Use Value: Eliminates redesign cost by maintaining existing PCB layout and firmware flag-handling logic while upgrading to lower-power 3.3 V operation. |
Use Scenario: Storing precomputed stimulus patterns in automated test equipment for high-speed digital IC validation. IC Role / Device Role / Timing Role: High-reliability pattern memory with retransmit capability for repeated test sequence execution. Use Value: FL/RT pin allows instant restart of pattern playback without reloading from host memory-reducing test cycle time by >40% in looped sequences. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar FIFO memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 72V04L15JGI8 | 15 ns access time (vs. 25 ns); higher ICC1 (75 mA max); same 4,096×9 organization and PLCC-32 package. | Suitable where tighter timing budgets demand faster throughput (≤40 MHz shift rate) and power budget permits higher active current. | Select when system timing margin requires sub-25 ns access; verify thermal design accommodates increased power dissipation. |
| 72V04L35JGI8 | 35 ns access time (vs. 25 ns); lower ICC1 (60 mA max); same organization, package, and industrial temp rating. | Better suited for cost-sensitive, lower-speed applications (e.g., legacy RS-232 bridges) where 25 ns is over-spec. | Choose for reduced BOM cost and lower power in non-critical timing paths; confirm system clock edges align with relaxed timing windows. |
Compared with 72V04L15JGI8 and 72V04L35JGI8, the 72V04L25JGI8 delivers optimal balance of speed (28.5 MHz shift frequency), power (60 mA active), and industrial reliability-making it the default choice for new designs targeting mid-range performance with proven thermal headroom.
Availability
72V04L25JGI8 is available at Aetrix Electronics and suitable for industrial serial bridge, motor control feedback buffer, legacy system protocol adapter, and test equipment pattern generator applications requiring stable component supply and long-term lifecycle support.
Supply support for 72V04L25JGI8 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 SoC solutions for automotive, industrial, infrastructure, and IoT markets.
The 72V04L25JGI8 belongs to Renesas' legacy IDT asynchronous FIFO product line, designed specifically for deterministic, clock-domain-independent data buffering in industrial communications and real-time control systems.
FAQ
What is the memory capacity and data width of the 72V04L25JGI8?
The 72V04L25JGI8 provides 4,096 words of storage with a 9-bit data width, totaling 36,864 bits. This configuration supports standard 8-bit data plus one parity bit per word-commonly used in industrial serial protocols like Modbus RTU and Profibus DP for error detection. The 9-bit width is fixed and not configurable.
Does the 72V04L25JGI8 support industrial temperature operation?
Yes, the 72V04L25JGI8 is specified for industrial temperature range (–40°C to +85°C) and is qualified per Renesas' industrial-grade reliability standards. This makes it suitable for deployment in factory automation, motor drives, and outdoor telecom equipment where ambient temperatures exceed commercial limits.
How does the retransmit function work on the 72V04L25JGI8?
The FL/RT pin serves as Retransmit (RT) in single-device mode. When pulsed LOW, it resets the internal read pointer to location zero while leaving the write pointer unchanged. This enables immediate replay of buffered data from the beginning-useful for protocol retries or test pattern looping-without reloading from host memory.
Is the 72V04L25JGI8 pin-compatible with older 5 V IDT7204 devices?
No, the 72V04L25JGI8 is not pin-compatible with the 5 V IDT7204 due to differing supply voltage requirements (3.3 V vs. 5 V) and incompatible I/O voltage thresholds. However, it is functionally compatible-same pin functions, flag behavior, and timing architecture-requiring only VCC and decoupling updates for migration.
What package type and lead finish does the 72V04L25JGI8 use?
The 72V04L25JGI8 uses a 32-pin Plastic Leaded Chip Carrier (PLCC, J32-1) package with lead-free (RoHS-compliant) Green (G) finish. It is not offered with SnPb leads, which were discontinued per PDN# SP-17-02 with last-time-buy ending June 15, 2018.
72V04L25JGI8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- 72V
- Package/Case:
- 32-LCC (J-Lead)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Size:
- 36K (4K x 9)
- Function:
- Asynchronous
- Data Rate:
- 28.5MHz
- Access Time:
- 25ns
- Voltage - Supply:
- 3 V ~ 3.6 V
- Current - Supply (Max):
- 60mA
- Bus Directional:
- Uni-Directional
- Expansion Type:
- Depth, Width
- Programmable Flags Support:
- No
- Retransmit Capability:
- Yes
- FWFT Support:
- No
- Operating Temperature:
- -40°C ~ 85°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-PLCC (14x11.46)
72V04L25JGI8 FAQ
1.How can I place an order for 72V04L25JGI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 72V04L25JGI8 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for 72V04L25JGI8 reliable?
The price and inventory of 72V04L25JGI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 72V04L25JGI8 is usually 5 days.
3.What payment methods are accepted for 72V04L25JGI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 72V04L25JGI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 72V04L25JGI8?
72V04L25JGI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 72V04L25JGI8 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for 72V04L25JGI8?
For technical support, including 72V04L25JGI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 72V04L25JGI8 requirements.
6.How does Aetrix verify that 72V04L25JGI8 is sourced from the original manufacturer or authorized distributors?
All 72V04L25JGI8 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 72V04L25JGI8 meets industry standards.
7.What is the process for return or replacement of 72V04L25JGI8?
All 72V04L25JGI8 units undergo pre-shipment inspection (PSI). If there is an issue with 72V04L25JGI8, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The 72V04L25JGI8 part is unused and in its original packaging.
Return procedure for 72V04L25JGI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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