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Renesas 7284L12PAG
- Part No.:
- 7284L12PAG
- Manufacturer:
- Renesas
- Category:
- FIFOs Memory
- Package:
- 56-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
7284L12PAG.pdf
- Description:
- IC FIFO ASYNC 4KX9X2 56TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,885
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Product details
Overview
IDT7284L12PAG from Integrated Device Technology (IDT) is a CMOS dual asynchronous FIFO memory IC comprising two independent 4,096 × 9-bit FIFOs in a single TSSOP-56 package. It supports simultaneous, asynchronous read/write operations with 12 ns access time, 5 V supply, and industrial temperature range (–40°C to +85°C). Used in bidirectional buffering, bus-matching, and data sorting between mismatched-speed subsystems.
For engineers reviewing the IDT7284L12PAG datasheet, IDT7284L12PAG pinout, IDT7284L12PAG application, or IDT7284L12PAG equivalent, key selection considerations include dual-FIFO depth (4,096 × 9 per channel), status flag behavior (Empty/Full/Half-Full), retransmit capability, and TSSOP-56 pin compatibility for legacy IDT72xx designs.
Technical Context
The IDT7284L12PAG implements two fully independent FIFO channels (A and B), each with dedicated 9-bit data buses (DA0–DA8/QA0–QA8 and DB0–DB8/QB0–QB8), control lines (WA/RA/WB/RB), and status flags (EFA/FFA/HFA and EFB/FFB/HFB). Internal ring pointers eliminate address management, enabling true first-in/first-out operation without external address logic.
It supports three primary operating modes: Single Device (XI grounded), Width Expansion (parallel FIFOs for wider data paths), and Depth Expansion (daisy-chained via XI/XO for extended depth). Retransmit (RT) resets the read pointer to zero without affecting the write pointer, enabling repeat data delivery-functional only in Single Device mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Depth per FIFO | 4,096 × 9 bits - provides 4K words of 9-bit data storage per channel, supporting parity or control bit allocation. |
| Access Time (tA) | 12 ns max - enables high-speed interfacing with 50 MHz systems (tS = 50 MHz max) without wait states. |
| Supply Voltage | 4.5 V to 5.5 V - compatible with standard 5 V TTL/CMOS logic families and legacy industrial power rails. |
| Operating Temperature | –40°C to +85°C - qualified for industrial environments including factory automation and transportation electronics. |
| Power Consumption | 685 mW max active, 83 mW max power-down - low static current supports energy-sensitive embedded buffering. |
| Status Flags | Empty (EF), Full (FF), Half-Full (HF) per channel - enables precise flow control without polling or software overhead. |
| Retransmit Function | RT input resets read pointer to start - allows deterministic retransmission of buffered data after partial reads. |
Pinout & Package
Package: 56-pin Thin Shrink SOIC (TSSOP-56, order code PA), lead finish SnPb (EOL as of June 15, 2018).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DA0–DA8, DB0–DB8 | Data Inputs (two 9-bit buses) | Independent parallel inputs for FIFO A and B; support parity/control bit assignment in 9-bit format. |
| QA0–QA8, QB0–QB8 | Data Outputs (two 3-state buses) | High-impedance outputs enabled only during active read cycles; isolated per channel. |
| WA, WB | Write Enable (active-low) | Falling-edge-triggered write strobes; inhibit writes when corresponding FF = LOW. |
| RA, RB | Read Enable (active-low) | Falling-edge-triggered read strobes; inhibit reads when corresponding EF = LOW. |
| EFA, EFB | Empty Flag (active-low) | Indicates FIFO A/B is empty; used to gate RA/RB to prevent underflow. |
| FFA, FFB | Full Flag (active-low) | Indicates FIFO A/B is full; used to gate WA/WB to prevent overflow. |
| HFA, HFB / XOA, XOB | Half-Full Flag / Expansion Out (dual-purpose) | In Single Device mode: HF asserts at 50% fill; in Depth Expansion: XO pulses on last write to chain next device. |
| FLA/RTA, FLB/RTB | First Load / Retransmit (dual-purpose) | In Single Device mode: RTA/RTB enables read-pointer reset; in Depth Expansion: FLA/FLB selects first device. |
| XIA, XIB | Expansion In (dual-purpose) | Grounded in Single Device mode; connected to XO of prior device in Depth Expansion daisy chain. |
| RS | Reset (active-low) | Synchronously resets both read/write pointers to location zero; required before initial write. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent FIFO architecture | Enables concurrent buffering of two data streams (e.g., TX/RX, master/slave) without arbitration or shared resources. |
| Asynchronous read/write with no address bus | Eliminates need for external address generation logic; simplifies PCB layout and reduces MCU GPIO usage. |
| Retransmit (RT) capability | Allows deterministic restart of data transmission from buffer start without resetting write pointer or losing new data. |
| Expandable depth and width | Supports scalable memory capacity: width expansion (parallel FIFOs for >9-bit data) and depth expansion (daisy-chain up to N devices). |
| Industrial temperature qualification | Guaranteed operation from –40°C to +85°C ensures reliability in harsh environments such as motor drives and PLCs. |
Applications
| Industrial Data Acquisition | Legacy Bus Interface Bridging |
|---|---|
|
Use Scenario: Buffering sensor data from multiple analog-to-digital converters sampling at different rates into a centralized microcontroller. IC Role / Device Role / Timing Role: Dual FIFO acts as rate-matching buffer: one channel accepts variable-rate ADC samples, the other feeds synchronized packets to the MCU. Use Value: Prevents data loss during burst transfers and eliminates CPU polling overhead via EF/FF flag-driven interrupt handling. |
Use Scenario: Interfacing an 8-bit microcontroller with a 16-bit peripheral using mismatched clock domains. IC Role / Device Role / Timing Role: IDT7284L12PAG serves as bidirectional width-expansion bridge: two 9-bit FIFOs combined as 18-bit path with handshaking. Use Value: Enables seamless 8→16-bit and 16→8-bit data conversion without custom glue logic or FPGA resources. |
| Serial Communication Repeater | Real-Time Control Loop Buffering |
|
Use Scenario: Extending RS-485 network distance by repeating frames between segments with timing isolation. IC Role / Device Role / Timing Role: One FIFO stores incoming frames; second FIFO transmits them after CRC validation and delay compensation. Use Value: Breaks ground loops and isolates timing jitter between segments while preserving frame integrity via retransmit on error. |
Use Scenario: Storing motion control commands from a host PC and feeding them deterministically to a servo drive. IC Role / Device Role / Timing Role: IDT7284L12PAG holds command queue (FIFO A) and feedback response buffer (FIFO B) in real-time closed loop. Use Value: Guarantees bounded latency (<12 ns access + flag propagation) and prevents command starvation during high-priority interrupts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual asynchronous FIFO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IDT7284L15PAG | 15 ns access time (vs. 12 ns); otherwise identical pinout, function, and specs. | Lower maximum clock rate (40 MHz vs. 50 MHz); suitable where timing margin exceeds requirement. | Select when system timing budget allows relaxed access time and cost optimization is prioritized. |
| ON Semiconductor NB3N502DG | Single 2,048 × 9 FIFO, 3.3 V supply, LVCMOS I/O; no retransmit or half-full flag. | Limited depth and voltage compatibility; requires level-shifting and dual ICs to match IDT7284L12PAG's dual 4K×9 capacity. | Consider only for new 3.3 V designs where footprint and power savings outweigh reduced feature set and depth. |
Compared with IDT7284L12PAG, IDT7284L15PAG trades 3 ns speed for broader availability and lower cost, while NB3N502DG requires redesign for voltage, depth, and feature parity-making it a functional alternative only in constrained 3.3 V applications.
Availability
IDT7284L12PAG is available at Aetrix Electronics and suitable for industrial data acquisition, legacy bus interface bridging, serial communication repeaters, and real-time control loop buffering requiring stable component supply across extended product lifecycles.
Supply support for IDT7284L12PAG 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) was a fabless semiconductor company specializing in timing, memory interface, RF, and sensor signal processing solutions before its acquisition by Renesas Electronics in 2019.
IDT7284L12PAG belongs to the IDT728x dual asynchronous FIFO family, designed specifically for high-reliability, low-latency data buffering in industrial, communications, and embedded control systems requiring deterministic flow control.
FAQ
What is the memory configuration of the IDT7284L12PAG?
The IDT7284L12PAG contains two independent 4,096 × 9-bit FIFO memories-one designated as FIFO A and the other as FIFO B-each with separate 9-bit data buses, control signals, and status flags. This dual-channel structure enables simultaneous, isolated buffering of two data streams without resource contention or arbitration logic.
Does the IDT7284L12PAG support retransmission of buffered data?
Yes, the IDT7284L12PAG supports retransmission via its Retransmit (RT) input. When RT is pulsed LOW in Single Device mode, the internal read pointer resets to the first location while the write pointer remains unchanged-enabling repeat delivery of the same data sequence without disrupting ongoing writes or requiring a full reset.
What package type and pin count does the IDT7284L12PAG use?
IDT7284L12PAG uses a 56-pin Thin Shrink SOIC (TSSOP-56) package, designated as order code PA. Its pinout is fully compatible with other members of the IDT728x family (e.g., IDT7280–IDT7285) and matches the physical layout shown in the official IDT datasheet Figure 2 (TSSOP top view).
Can the IDT7284L12PAG operate in industrial temperature conditions?
Yes, IDT7284L12PAG is rated for industrial temperature operation from –40°C to +85°C. This qualification is explicitly stated in the datasheet's "Commercial and Industrial Temperature Ranges" section and confirmed in the Recommended DC Operating Conditions table, making it suitable for factory automation, motor control, and outdoor embedded systems.
How does depth expansion work with the IDT7284L12PAG?
Depth expansion with IDT7284L12PAG is achieved by daisy-chaining multiple devices: Expansion Out (XO) of one device connects to Expansion In (XI) of the next. The first device has FL grounded; others have FL high. External logic ORs all EF and FF outputs to generate composite flags, while RT and HF functions are disabled in this mode.
7284L12PAG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- 7200
- Package/Case:
- 56-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Size:
- 72K (4K x 9 x 2)
- Function:
- Asynchronous
- Data Rate:
- 50MHz
- Access Time:
- 12ns
- Voltage - Supply:
- 4.5 V ~ 5.5 V
- Current - Supply (Max):
- 125mA
- 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:
- 56-TSSOP
7284L12PAG FAQ
1.How can I place an order for 7284L12PAG through Aetrix?
Please submit a Request for Quotation (RFQ) for 7284L12PAG 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 7284L12PAG reliable?
The price and inventory of 7284L12PAG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7284L12PAG is usually 5 days.
3.What payment methods are accepted for 7284L12PAG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7284L12PAG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7284L12PAG?
7284L12PAG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7284L12PAG 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 7284L12PAG?
For technical support, including 7284L12PAG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7284L12PAG requirements.
6.How does Aetrix verify that 7284L12PAG is sourced from the original manufacturer or authorized distributors?
All 7284L12PAG 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 7284L12PAG meets industry standards.
7.What is the process for return or replacement of 7284L12PAG?
All 7284L12PAG units undergo pre-shipment inspection (PSI). If there is an issue with 7284L12PAG, 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 7284L12PAG part is unused and in its original packaging.
Return procedure for 7284L12PAG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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