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Renesas 72V04L15JG8
- Part No.:
- 72V04L15JG8
- Manufacturer:
- Renesas
- Category:
- FIFOs Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
72V04L15JG8.pdf
- Description:
- IC FIFO ASYNC 4KX9 15NS 32PLCC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
72V04L15JG8 from Renesas Electronics (formerly IDT) is a 3.3 V CMOS asynchronous FIFO memory with 4,096 × 9-bit depth/width organization, 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 is used in rate-matching buffering between mismatched data streams in communications and embedded control systems.
For engineers reviewing the 72V04L15JG8 datasheet, 72V04L15JG8 pinout, 72V04L15JG8 application, or 72V04L15JG8 equivalent, key selection criteria include its 4K×9 capacity, PLCC-32 package, 3.3 V supply compatibility, low-power active/standby current (60 mA / 5 mA), and support for depth/width expansion in multiprocessor interconnects.
Technical Context
The 72V04L15JG8 implements a dual-port first-in/first-out architecture using ring pointers-no external address bus required-and operates asynchronously with independent W (write) and R (read) control lines. Its 9-bit data width accommodates parity or control bits, enabling error-checked data transmission in serial interfaces.
It delivers deterministic timing with tA = 15 ns, tRC = 25 ns, and tWC = 25 ns, and includes auto-retransmit capability via FL/RT pin for data replay without reset. The device supports single-device mode (XI grounded) and depth expansion (XO→XI daisy chain), though HF and RT functions are disabled in expansion mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 4,096 × 9-bit (36,864 bits total; supports parity/control bit insertion) |
| Access Time (tA) | 15 ns - enables ≤66.7 MHz interface timing in high-speed buffering |
| Supply Voltage | 3.0 V to 3.6 V - compatible with modern 3.3 V logic families and LDO-regulated systems |
| Active Current (ICC1) | 60 mA max - corresponds to ~180 mW power at 3.3 V, suitable for thermally constrained designs |
| Standby Current (ICC2) | 5 mA max - reduces idle power by >90% vs. active mode for intermittent operation |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade reliability in factory automation and telecom infrastructure |
| Status Flags | EF, FF, XO/HF - provide real-time buffer occupancy feedback without polling or software overhead |
Pinout & Package
72V04L15JG8 is housed in a 32-pin Plastic Leaded Chip Carrier (PLCC, J32-1) package with standard pinout per IDT72V04 family specification. Pin 1 is indexed at bottom-left corner when viewed from top with index mark oriented upper-left.
| 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 | 3-state outputs enabled only during valid read cycles (R low); high-Z otherwise |
| W | Write Enable | Falling-edge-triggered write strobe; blocked when FF = low to prevent overflow |
| R | Read Enable | Falling-edge-triggered read strobe; blocked when EF = low to prevent underflow |
| RS | Reset | Active-low synchronous reset; initializes both read/write pointers to location zero |
| FL/RT | First Load / Retransmit | In single-device mode (XI = GND): retransmit trigger; pulses LOW to reset read pointer to start |
| XI | Expansion In | Grounded for single-device mode; tied to XO of prior device in depth expansion chains |
| XO/HF | Expansion Out / Half-Full Flag | In single-device mode: asserts LOW when memory ≥50% full; in expansion: daisy-chain pulse signal |
| EF | Empty Flag | Open-drain output; goes LOW when read pointer = write pointer (buffer empty) |
| FF | Full Flag | Open-drain output; goes LOW when write pointer = read pointer – 1 (buffer full) |
| VCC | Power Supply | 3.3 V ±0.3 V main supply; decoupling required per high-speed CMOS layout guidelines |
| GND | Ground | Reference for all I/O and internal logic; separate analog/digital grounding not required |
Key Features
| Feature | Design Value |
|---|---|
| Asynchronous Dual-Port Operation | Independent W and R controls enable true concurrent read/write without clock domain synchronization |
| Expandable Architecture | Supports unlimited depth expansion (XO→XI chaining) and width expansion (parallel data buses) without external glue logic |
| Retransmit Capability | FL/RT pin allows immediate replay of buffered data from start position-critical for protocol recovery in UART/HDLC links |
| Low-Power 3.3 V CMOS | 180 mW active / 18 mW standby power enables use in fanless industrial controllers and remote sensors |
| Industrial Temperature Range | –40°C to +85°C qualification ensures stable flag timing and data retention across thermal cycling in base stations and PLCs |
Applications
| UART Protocol Buffering | Motor Control Data Pipeline |
|---|---|
Use Scenario: Isolating variable-rate UART transmit/receive paths in an RS-485 fieldbus node where host MCU runs at 48 MHz but peripheral responds at 115.2 kbps. IC Role / Device Role / Timing Role: Asynchronous FIFO decouples baud-rate domains; absorbs burst transmissions while maintaining deterministic latency. Use Value: Eliminates CPU polling or interrupt storms; enables guaranteed 4,096-byte transmit queue depth with hardware flow control via EF/FF flags. | Use Scenario: Buffering position feedback (encoder counts) and motion commands between FPGA-based trajectory planner and ARM-based safety monitor in servo drives. IC Role / Device Role / Timing Role: Rate-matching FIFO synchronizes 100 kHz encoder sampling with 10 kHz safety-check intervals without data loss. Use Value: Prevents overrun during emergency stop sequences; Half-Full Flag triggers preemptive DMA reload before buffer depletion. |
| Legacy ISA Bus Bridge | Industrial Camera Frame Buffer |
Use Scenario: Adapting legacy 8-bit ISA peripherals to modern PCI Express hosts using bridge ASIC with limited on-die FIFO resources. IC Role / Device Role / Timing Role: Offloads bursty ISA I/O transfers into deep 4K×9 buffer, smoothing PCIe TLP scheduling pressure. Use Value: Enables plug-and-play compatibility without modifying host driver stack; Full Flag halts ISA cycles safely during PCIe backpressure. | Use Scenario: Capturing raw Bayer-pattern image frames from a 12-bit CMOS sensor running at 30 fps into a low-power microcontroller with limited SRAM. IC Role / Device Role / Timing Role: Stores one complete frame (up to 4,096 pixels × 9 bits) before DMA transfer to flash or display controller. Use Value: Reduces peak memory bandwidth demand by 75%; Retransmit function allows frame re-read for checksum validation without sensor retrigger. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar FIFO memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 72V04L25JG8 | Slower 25 ns access time; identical 4,096×9 organization, PLCC-32, and feature set | Suitable for cost-sensitive industrial controllers where 15 ns timing margin is unnecessary | Select when system clock rates ≤40 MHz and BOM cost optimization is prioritized over worst-case latency |
| 72V05L15JG8 | Double memory depth (8,192×9); same speed, voltage, package, and pinout-pin-compatible upgrade | Required when buffer depth must scale beyond 4K words without PCB redesign | Choose for future-proofing or applications needing extended burst capture (e.g., multi-axis motion profiling) |
Compared with 72V04L15JG8, the 72V04L25JG8 trades 10 ns of access speed for lower unit cost, while the 72V05L15JG8 retains identical timing and interface but doubles buffer depth-both require no layout changes and share the same industrial temperature rating.
Availability
72V04L15JG8 is available at Aetrix Electronics and suitable for industrial automation, telecommunications infrastructure, and embedded instrumentation requiring stable component supply amid end-of-life transitions.
Supply support for 72V04L15JG8 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 markets.
The IDT72V04 family-including 72V04L15JG8-was designed specifically for high-reliability asynchronous data buffering in rate-mismatched digital systems such as protocol bridges, motor controllers, and legacy interface adapters.
FAQ
What is the memory capacity and data width of the 72V04L15JG8?
The 72V04L15JG8 provides 4,096 words of storage, each word being 9 bits wide-totaling 36,864 bits. This 9-bit width explicitly supports 8-bit data plus 1 parity or control bit, making it ideal for error-checked serial communication protocols like HDLC or custom fieldbus implementations where bit-level integrity is critical. The 72V04L15JG8 does not support configurable word widths; the 9-bit structure is fixed per its CMOS FIFO architecture.
Does the 72V04L15JG8 support both commercial and industrial temperature ranges?
Yes, the 72V04L15JG8 is specified for the industrial temperature range of –40°C to +85°C, as confirmed in the Absolute Maximum Ratings and DC Electrical Characteristics tables. While the datasheet references both commercial and industrial grades across the IDT72Vxx family, the "JG8" suffix denotes the industrial-grade PLCC-32 variant. The 72V04L15JG8 is not rated for commercial-only (0°C to +70°C) operation-it is exclusively an industrial-qualified part.
How does the retransmit function work on the 72V04L15JG8, and what pin controls it?
The retransmit function on the 72V04L15JG8 is controlled by the FL/RT pin (Pin 26) and operates only in single-device mode (when XI is grounded). When FL/RT is pulsed LOW, the internal read pointer resets to location zero, enabling replay of buffered data from the beginning-without affecting the write pointer or losing newly written data. This behavior is documented in Table 1 and Figure 6. The 72V04L15JG8 retransmit feature is disabled in depth expansion configurations.
What package type and pin count does the 72V04L15JG8 use?
The 72V04L15JG8 uses a 32-pin Plastic Leaded Chip Carrier (PLCC) package, specifically the J32-1 variant denoted by the "J" in the order code. Its pinout is standardized across the IDT72V01–72V06 family and includes dedicated D0–D8 and Q0–Q8 buses, control pins (W, R, RS, FL/RT, XI), status flags (EF, FF, XO/HF), and power (VCC) and ground (GND) terminals. No alternate packages (e.g., SOIC or TSSOP) were offered for this speed/temperature grade.
Is the 72V04L15JG8 still in active production, and what is its lifecycle status?
The 72V04L15JG8 entered End-of-Life (EOL) per Renesas' Product Discontinuation Notice PDN# SP-17-02, with last-time-buy expiration on June 15, 2018. It is no longer in active production, but Aetrix Electronics maintains legacy inventory with full traceability and offers lifecycle coordination support-including cross-reference guidance and obsolescence mitigation-for ongoing industrial deployments relying on the 72V04L15JG8.
72V04L15JG8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- 72V
- Package/Case:
- 32-LCC (J-Lead)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Size:
- 36K (4K x 9)
- Function:
- Asynchronous
- Data Rate:
- 40MHz
- Access Time:
- 15ns
- 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:
- 0°C ~ 70°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-PLCC (14x11.46)
72V04L15JG8 FAQ
1.How can I place an order for 72V04L15JG8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 72V04L15JG8 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 72V04L15JG8 reliable?
The price and inventory of 72V04L15JG8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 72V04L15JG8 is usually 5 days.
3.What payment methods are accepted for 72V04L15JG8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 72V04L15JG8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 72V04L15JG8?
72V04L15JG8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 72V04L15JG8 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 72V04L15JG8?
For technical support, including 72V04L15JG8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 72V04L15JG8 requirements.
6.How does Aetrix verify that 72V04L15JG8 is sourced from the original manufacturer or authorized distributors?
All 72V04L15JG8 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 72V04L15JG8 meets industry standards.
7.What is the process for return or replacement of 72V04L15JG8?
All 72V04L15JG8 units undergo pre-shipment inspection (PSI). If there is an issue with 72V04L15JG8, 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 72V04L15JG8 part is unused and in its original packaging.
Return procedure for 72V04L15JG8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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