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Renesas 7282L15PAI
- Part No.:
- 7282L15PAI
- Manufacturer:
- Renesas
- Category:
- FIFOs Memory
- Package:
- 56-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
7282L15PAI.pdf
- Description:
- IC FIFO ASYNC 1KX9X2 56TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,757
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Product details
Overview
IDT7282L15PAI from Integrated Device Technology is a CMOS dual asynchronous FIFO memory IC with two independent 1,024 × 9-bit data buffers, 5 V supply operation, 15 ns access time, and industrial temperature range (–40°C to +85°C), used in bidirectional buffering and bus-matching between mismatched data rates in embedded communications systems.
For engineers reviewing the IDT7282L15PAI datasheet, IDT7282L15PAI pinout, IDT7282L15PAI application, or IDT7282L15PAI equivalent, key selection considerations include dual-FIFO depth expansion capability, retransmit functionality, half-full flag support, TSSOP-56 package compatibility, and industrial-grade timing reliability under asynchronous read/write conditions.
Technical Context
The IDT7282L15PAI implements two fully independent FIFOs (A and B), each with ring-pointer-based address management, no external address bus required, and simultaneous asynchronous read/write operations enabled by separate control lines (WA/RA/WB/RB). Each FIFO supports 9-bit data width including parity bit allocation.
It features dedicated status flags per FIFO (Empty, Full, Half-Full), auto-retransmit via FL/RT pin, and expansion logic for daisy-chained depth expansion or parallel width expansion - all implemented in high-speed CMOS with internal three-state output drivers and reset-synchronized pointer initialization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Depth | Dual 1,024 × 9-bit FIFOs - provides 1,024 words of storage per channel, suitable for burst-mode data buffering without overflow in moderate-throughput interfaces. |
| Access Time (tA) | 15 ns max - guarantees deterministic latency from write/read enable assertion to valid data on bus, critical for real-time handshake timing. |
| 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 motor control systems. |
| Power Consumption | Active: 685 mW max; Power-down: 83 mW max - enables low-idle-power operation in battery-backed or thermally constrained designs. |
| Pin Count & Package | 56-pin TSSOP (SO56-2) - space-efficient surface-mount footprint with verified thermal and mechanical reliability for automated assembly. |
| Flag Outputs | Per-FIFO Empty (EF), Full (FF), Half-Full (HF) - enables precise buffer-level monitoring without software polling or external logic. |
Pinout & Package
Package: 56-pin Thin Shrink SOIC (TSSOP, SO56-2), lead-finish SnPb (EOL as of June 15, 2018), industrial temperature grade.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DA0–DA8, DB0–DB8 | Data Inputs (A/B) | Two independent 9-bit parallel input buses - supports parity bit insertion or extended control signaling within data word. |
| QA0–QA8, QB0–QB8 | Data Outputs (A/B) | Three-state outputs per FIFO - allows direct connection to shared data buses without external transceivers. |
| WA, WB | Write Enable (A/B) | Falling-edge-triggered write strobes - initiates sequential write into respective FIFO without address generation logic. |
| RA, RB | Read Enable (A/B) | Falling-edge-triggered read strobes - retrieves oldest stored word with automatic pointer advancement. |
| RS | Reset Input | Asynchronous active-low reset - forces both read/write pointers to zero and sets EF=LOW, FF=HIGH, HF=HIGH at power-up or error recovery. |
| FLA/RTA, FLB/RTB | First Load / Retransmit (A/B) | Dual-function pin: grounded for depth expansion master; pulsed LOW for retransmit - resets read pointer to start while preserving write pointer state. |
| XIA, XIB | Expansion In (A/B) | Ground for single-device mode; connects to XO of prior device in daisy chain - enables unlimited depth expansion with external composite flag logic. |
| XOA/HFA, XOB/HFB | Expansion Out / Half-Full Flag (A/B) | In single mode: asserts LOW when FIFO is ≥50% full; in depth mode: pulses to next device at last location - supports cascaded buffer chaining. |
| EFA, EFB | Empty Flag (A/B) | Active-low open-drain output - signals FIFO exhaustion; must be monitored before issuing read to avoid invalid data access. |
| FFA, FFB | Full Flag (A/B) | Active-low open-drain output - blocks further writes when write pointer = read pointer – 1; prevents data overwrite. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent FIFO architecture | Enables true bidirectional data flow between two subsystems (e.g., host ↔ peripheral) without arbitration or shared memory contention. |
| Retransmit (RT) capability | Resets read pointer to initial position on pulse, enabling repeat transmission of buffered data - essential for protocol retransmission or firmware update rollback. |
| Half-Full Flag (HF) | Provides early warning at 50% fill level - allows preemptive action (e.g., DMA trigger, interrupt service) before full/empty conditions occur. |
| Width and depth expansion support | Permits scalable memory configuration: parallel width expansion up to 18+ bits, daisy-chained depth expansion beyond 8,192 words using external logic. |
| Industrial temperature qualification | Validated operation from –40°C to +85°C - ensures reliability in uncontrolled ambient environments such as transportation electronics or outdoor industrial controllers. |
Applications
| UART Bridge Buffering | Motor Control Data Pipeline |
|---|---|
Use Scenario: Isolating UART peripherals with mismatched baud rates in PLC backplanes, preventing data loss during burst transmissions. IC Role / Device Role / Timing Role: Dual FIFO acts as rate-matching buffer: one channel absorbs variable-rate serial input, the other feeds fixed-rate controller interface. Use Value: Eliminates software flow control overhead and guarantees deterministic latency ≤15 ns per word transfer under worst-case timing. | Use Scenario: Storing motion command sequences and feedback telemetry in servo drive modules with real-time safety constraints. IC Role / Device Role / Timing Role: FIFO A buffers position setpoints from motion controller; FIFO B streams encoder counts back - both operate asynchronously with independent clocks. Use Value: Enables jitter-free command execution and synchronized diagnostics capture without CPU intervention or shared bus arbitration. |
| Legacy Bus Interface Adapter | Fieldbus Protocol Converter |
Use Scenario: Bridging ISA or PCI-based host processors to modern sensor networks using SPI/I²C, where clock domain isolation is mandatory. IC Role / Device Role / Timing Role: Acts as synchronous-to-asynchronous converter: host writes burst data into FIFO A; microcontroller reads at its own pace from FIFO B. Use Value: Removes timing dependency between host and peripheral clocks, allowing mixed-vendor interoperability without custom ASIC design. | Use Scenario: Translating Modbus RTU frames to CANopen messages in gateway devices deployed across distributed automation nodes. IC Role / Device Role / Timing Role: Stores incoming frame fragments in FIFO A; reassembles and reformats into CAN payload in FIFO B - both buffers managed independently. Use Value: Supports concurrent receive/transmit operations with guaranteed 1,024-byte payload capacity per direction and hardware-level empty/full protection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual asynchronous FIFO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IDT7282L12PAI | 12 ns access time (vs. 15 ns); otherwise identical pinout, function, and specs. | Suitable for higher-speed systems requiring tighter timing margins; not rated for industrial temp unless explicitly ordered with 'I' suffix. | Select when system clock budget demands sub-15 ns latency and commercial temp (0°C to +70°C) suffices. |
| ON Semiconductor NB3N502DR2G | Single 2,048 × 9 FIFO, 3.3 V only, no retransmit or half-full flag; different pinout and control logic. | Limited to single-channel buffering; requires level-shifting and external logic for dual-FIFO emulation. | Consider only if 5 V operation, dual independence, or retransmit capability are non-critical and board redesign is acceptable. |
Compared with IDT7282L15PAI, IDT7282L12PAI offers faster access but lacks industrial temperature rating by default, while NB3N502DR2G sacrifices dual-channel autonomy and 5 V compatibility to reduce cost and footprint - making IDT7282L15PAI the sole choice for robust, drop-in dual-FIFO buffering in harsh environments.
Availability
IDT7282L15PAI is available at Aetrix Electronics and suitable for industrial automation, motor control, and legacy bus interface applications requiring stable component supply, long-term lifecycle support, and verified industrial temperature performance.
Supply support for IDT7282L15PAI 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 high-performance interconnect solutions.
The IDT7282L15PAI belongs to the IDT728x family of dual asynchronous FIFOs, designed specifically for deterministic, low-latency data buffering in industrial, communications, and embedded systems where clock domain isolation and burst-mode resilience are critical.
FAQ
What is the memory configuration of the IDT7282L15PAI?
The IDT7282L15PAI contains two independent 1,024 × 9-bit FIFO memories - each supporting 9-bit data width (e.g., 8 data + 1 parity bit), with separate read/write controls, status flags, and pointer logic. This dual configuration enables true concurrent buffering across two data paths without interference.
Does the IDT7282L15PAI support industrial temperature operation?
Yes, the IDT7282L15PAI is specified for industrial temperature range (–40°C to +85°C), as confirmed in the ordering information and DC electrical characteristics tables. This makes it suitable for deployment in factory automation, transportation, and outdoor industrial equipment where ambient conditions exceed commercial limits.
What is the purpose of the FL/RT pin on the IDT7282L15PAI?
The FL/RT (First Load / Retransmit) pin on the IDT7282L15PAI serves dual roles: in depth expansion mode, it is grounded to designate the first device in a daisy chain; in single-device mode, pulsing it LOW triggers retransmit - resetting the read pointer to the start address while preserving the write pointer and stored data in IDT7282L15PAI.
Can the IDT7282L15PAI be used for width expansion?
Yes, the IDT7282L15PAI supports width expansion by connecting corresponding control inputs (WA/WB, RA/RB, RS, etc.) of multiple units in parallel. For example, two IDT7282L15PAI devices can implement a 1,024 × 18-bit FIFO, with status flags readable from either unit - enabling flexible data path scaling without redesigning the IDT7282L15PAI interface logic.
Is the IDT7282L15PAI still in production?
The IDT7282L15PAI entered End-of-Life (EOL) for SnPb lead finish with Last Time Buy expiring June 15, 2018, per PDN# SP-17-02. However, RoHS-compliant green variants may be available through authorized channels; Aetrix Electronics maintains traceable inventory and supports lifecycle continuity planning for ongoing IDT7282L15PAI deployments.
7282L15PAI 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:
- 18K (1K x 9 x 2)
- Function:
- Asynchronous
- Data Rate:
- 40MHz
- Access Time:
- 15ns
- 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:
- -40°C ~ 85°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 56-TSSOP
7282L15PAI FAQ
1.How can I place an order for 7282L15PAI through Aetrix?
Please submit a Request for Quotation (RFQ) for 7282L15PAI 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 7282L15PAI reliable?
The price and inventory of 7282L15PAI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7282L15PAI is usually 5 days.
3.What payment methods are accepted for 7282L15PAI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7282L15PAI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7282L15PAI?
7282L15PAI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7282L15PAI 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 7282L15PAI?
For technical support, including 7282L15PAI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7282L15PAI requirements.
6.How does Aetrix verify that 7282L15PAI is sourced from the original manufacturer or authorized distributors?
All 7282L15PAI 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 7282L15PAI meets industry standards.
7.What is the process for return or replacement of 7282L15PAI?
All 7282L15PAI units undergo pre-shipment inspection (PSI). If there is an issue with 7282L15PAI, 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 7282L15PAI part is unused and in its original packaging.
Return procedure for 7282L15PAI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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