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Renesas 72V05L25JGI8
- Part No.:
- 72V05L25JGI8
- Manufacturer:
- Renesas
- Category:
- FIFOs Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
72V05L25JGI8.pdf
- Description:
- IC FIFO ASYNC 8KX9 25NS 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:3,185
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Product details
Overview
72V05L25JGI8 from Renesas Electronics (formerly IDT) is a 3.3 V CMOS asynchronous FIFO memory with 8,192 × 9-bit depth and width, 25 ns access time, industrial temperature range (–40°C to +85°C), and 32-pin PLCC package. It supports simultaneous read/write, auto-retransmit, and status flags (Empty, Full, Half-Full), used in rate-matching buffers for data communications and multiprocessing systems.
For engineers reviewing the 72V05L25JGI8 datasheet, 72V05L25JGI8 pinout, 72V05L25JGI8 application, or 72V05L25JGI8 equivalent, key selection criteria include its 8,192-word depth, 9-bit data path, 25 ns timing, industrial-grade reliability, and compatibility with legacy 720x-family designs requiring asynchronous buffering without address management.
Technical Context
The 72V05L25JGI8 implements dual-port ring-pointer architecture with no external address bus-data flows strictly FIFO via Write (W) and Read (R) control signals. Its internal RAM array is 8,192 × 9 bits, enabling parity or control bit inclusion across the 9-bit data path (D0–D8/Q0–Q8).
It features three dedicated status flags (EF, FF, XO/HF), expansion logic for unlimited depth/width scalability, and retransmit capability (FL/RT pin) that resets the read pointer without affecting write pointer position-critical for packet retransmission in serial protocols.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Depth × Width | 8,192 × 9 bits - supports full 9-bit words including parity/control bits for error-checked data comms |
| Access Time (tA) | 25 ns max - enables ≤40 MHz shift frequency in high-speed buffering applications |
| Supply Voltage | 3.0 V to 3.6 V - compatible with 3.3 V system rails; low-power alternative to 5 V 720x family |
| Operating Temperature | –40°C to +85°C - qualified for industrial environments without derating |
| Power Consumption | Active: 60 mA max (180 mW); Power-down: 5 mA max (18 mW) - suitable for power-sensitive embedded buffering |
| Status Flags | EF, FF, XO/HF - provide real-time buffer state monitoring without software polling or address decoding |
| Pin Count & Package | 32-pin PLCC (J32-1) - surface-mount compatible with standard industrial PCB assembly processes |
Pinout & Package
32-pin Plastic Leaded Chip Carrier (PLCC, order code J), JEDEC standard J32-1 footprint, lead-finish SnPb (EOL as of June 2018).
| Pin/Terminal | 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 |
| Q0–Q8 | Data Output Bus | 9-bit parallel output path; three-state when R = HIGH; valid after tA from falling R edge |
| W | Write Enable | Falling-edge triggered write; blocks if FF = LOW; initiates sequential storage without address lines |
| R | Read Enable | Falling-edge triggered read; blocks if EF = LOW; outputs data independent of concurrent writes |
| RS | Reset | Active-Low synchronous reset; initializes both read/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; not available in depth expansion |
| XI | Expansion In | Grounded for single-device mode; tied to XO of prior device in daisy-chain depth expansion |
| XO/HF | Expansion Out / Half-Full Flag | In single mode: HF indicates ≥50% fill; in expansion: pulse to next device at last location |
| EF | Empty Flag | Active-Low; inhibits further reads when read pointer = write pointer |
| FF | Full Flag | Active-Low; inhibits further writes when write pointer = read pointer – 1 |
| VCC, GND | Power Supply | 3.3 V ±0.3 V supply; decoupling required per high-speed CMOS layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Asynchronous Dual-Port Operation | Independent read/write clocks not required-simplifies interface to mismatched bus speeds in bridge or protocol converter designs |
| Auto-Retransmit Capability | Pulsing FL/RT LOW resets read pointer to origin while preserving write pointer-enables deterministic packet resend without host CPU intervention |
| Expandable Architecture | Unlimited depth via daisy-chained XI/XO; unlimited width via parallel D/Q buses-scalable from 8K×9 to multi-Mbit buffers |
| 9-Bit Data Path | Supports 8-bit data + 1 parity bit or 9-bit control word-essential for UART, HDLC, or custom serial link implementations |
| Status Flag Logic | EF/FF/HF drive standard TTL levels (VOH ≥2.4 V, VOL ≤0.4 V) - directly interfaces to FPGA/CPLD I/O without level-shifting |
Applications
| Industrial Serial Bridge | Multi-Processor Data Exchange |
|---|---|
Use Scenario: Bridging RS-485 fieldbus to PCI Express host with mismatched throughput rates. IC Role / Device Role / Timing Role: Asynchronous rate buffer absorbing bursty sensor data while feeding steady stream to host DMA engine. Use Value: Eliminates software-managed circular buffers; 8,192-word depth absorbs >100 ms of peak traffic at 1 Mbps without overflow. | Use Scenario: Shared-memory interconnect between two ARM cores running different RTOS instances. IC Role / Device Role / Timing Role: Dual-port FIFO decouples write-heavy producer core from read-heavy consumer core without arbitration logic. Use Value: Enables lock-free communication with guaranteed ordering; 25 ns access ensures <100 ns round-trip latency for critical control messages. |
| Telecom Line Card Buffer | Legacy Protocol Adapter |
Use Scenario: T1/E1 framer interfacing to DSP-based channel bank with variable processing latency. IC Role / Device Role / Timing Role: First-in/first-out temporary storage for framed voice packets during jitter compensation. Use Value: Half-full flag triggers early fetch to prevent underflow; 9-bit width accommodates 8-bit samples + sync bit. | Use Scenario: Converting proprietary 9-bit serial protocol to USB CDC ACM on microcontroller-based gateway. IC Role / Device Role / Timing Role: Hardware FIFO isolating slow USB stack from deterministic serial receive timing. Use Value: Retransmit function allows restart of partial frame after CRC failure-no host firmware overhead for resync. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar FIFO memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 72V05L25JI | Same 8,192×9 organization and 25 ns speed, but in 32-pin PQFP (JI) instead of PLCC (J) | Requires PCB redesign due to different footprint and thermal profile; better for automated SMT vs hand-soldered PLCC | Select 72V05L25JI only when migrating to fine-pitch surface-mount assembly and thermal management permits PQFP |
| 72V2113L25JG | Higher density (32,768×9), same 25 ns access, identical PLCC-32 package and pinout | Direct drop-in replacement with 4× deeper buffer-ideal when application requires extended latency tolerance or burst absorption | Choose 72V2113L25JG when existing board layout supports larger memory depth and system firmware can handle extended flag timing |
Compared with 72V05L25JGI8, 72V05L25JI offers identical functionality in a different package requiring layout change, while 72V2113L25JG provides quadrupled depth with true pin-to-pin compatibility-making it the preferred upgrade path for enhanced buffering without redesign.
Availability
72V05L25JGI8 is available at Aetrix Electronics and suitable for industrial serial bridges, multi-processor data exchange, and telecom line card buffering requiring stable component supply through end-of-life transition support.
Supply support for 72V05L25JGI8 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 memory solutions for automotive, industrial, and infrastructure markets.
The IDT72Vxx family-including 72V05L25JGI8-was originally developed by Integrated Device Technology (acquired by Renesas in 2019) to provide low-voltage, high-speed asynchronous FIFOs for rate-adaptive buffering in communications and real-time embedded systems.
FAQ
What is the memory capacity and data width of the 72V05L25JGI8?
The 72V05L25JGI8 is an 8,192 × 9-bit asynchronous FIFO, providing 73,728 bits (9,216 bytes) of buffer memory. Its 9-bit data path supports 8-bit data plus 1 parity or control bit-commonly used in serial communications protocols requiring error detection or framing information.
Does the 72V05L25JGI8 support industrial temperature operation?
Yes, the 72V05L25JGI8 is rated for industrial temperature range (–40°C to +85°C) and is specified for this range at 3.3 V supply. The "I" suffix in the part number confirms industrial qualification, making it suitable for deployment in harsh environments such as factory automation and outdoor telecom equipment.
What is the function of the FL/RT pin on the 72V05L25JGI8?
On the 72V05L25JGI8, the FL/RT pin serves as Retransmit (RT) in single-device mode: pulsing it LOW resets the internal read pointer to the first memory location while leaving the write pointer unchanged. This enables deterministic retransmission of buffered data without host CPU involvement or buffer clearing.
Can multiple 72V05L25JGI8 devices be cascaded for greater depth?
Yes, the 72V05L25JGI8 supports depth expansion via its XI (Expansion In) and XO/HF (Expansion Out) pins. In daisy-chain configuration, XO of one device connects to XI of the next, allowing scalable buffer depth beyond 8,192 words-though EF/FF must be OR-combined externally and RT/HF functions are disabled in this mode.
Is the 72V05L25JGI8 pin-compatible with older 5 V FIFOs like the 7205?
No, the 72V05L25JGI8 is functionally compatible with the 7205 but not pin-compatible-it operates at 3.3 V and uses different DC and AC specifications. While logic behavior and pin functions match, voltage levels, timing margins, and power requirements differ; direct replacement requires board-level voltage translation and timing validation.
72V05L25JGI8 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:
- 72K (8K x 9)
- Function:
- Asynchronous
- Data Rate:
- 28.5MHz
- Access Time:
- 25ns
- Voltage - Supply:
- 3 V ~ 3.6 V
- Current - Supply (Max):
- 75mA
- 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)
72V05L25JGI8 FAQ
1.How can I place an order for 72V05L25JGI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 72V05L25JGI8 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 72V05L25JGI8 reliable?
The price and inventory of 72V05L25JGI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 72V05L25JGI8 is usually 5 days.
3.What payment methods are accepted for 72V05L25JGI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 72V05L25JGI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 72V05L25JGI8?
72V05L25JGI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 72V05L25JGI8 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 72V05L25JGI8?
For technical support, including 72V05L25JGI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 72V05L25JGI8 requirements.
6.How does Aetrix verify that 72V05L25JGI8 is sourced from the original manufacturer or authorized distributors?
All 72V05L25JGI8 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 72V05L25JGI8 meets industry standards.
7.What is the process for return or replacement of 72V05L25JGI8?
All 72V05L25JGI8 units undergo pre-shipment inspection (PSI). If there is an issue with 72V05L25JGI8, 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 72V05L25JGI8 part is unused and in its original packaging.
Return procedure for 72V05L25JGI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
72V05L25JGI8 Tags
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