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Renesas 7202LA50JG8
- Part No.:
- 7202LA50JG8
- Manufacturer:
- Renesas
- Category:
- FIFOs Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
7202LA50JG8.pdf
- Description:
- IC FIFO ASYNC 1KX9 35NS 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,319
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Product details
Overview
7202LA50JG8 from Renesas Electronics (formerly IDT) is a 1,024 × 9-bit CMOS asynchronous FIFO memory IC used for rate buffering and data synchronization between mismatched clock domains or bus protocols. It features 50 ns access time, ultra-low power consumption (max 440 mW active / 28 mW power-down), and dual-port first-in/first-out operation with Empty, Full, and Half-Full status flags - deployed in industrial communications and legacy multiprocessing systems.
For engineers reviewing the 7202LA50JG8 datasheet, 7202LA50JG8 pinout, 7202LA50JG8 application, or 7202LA50JG8 equivalent, key selection criteria include its 50 ns tA, 9-bit data width with parity support, retransmit capability, TSSOP-32 package compatibility, and MIL-STD-883 Class B compliance for extended temperature operation.
Technical Context
The 7202LA50JG8 implements a ring-pointer architecture with no external address bus required - data flows sequentially via Write (W) and Read (R) strobes. Its internal logic maintains independent read/write pointers, enabling true asynchronous and simultaneous read/write operations without arbitration overhead.
It supports three operating modes: Single Device (XI grounded), Depth Expansion (daisy-chained via XO/XI), and Width Expansion (parallel devices). Retransmit (RT) resets the read pointer to zero without affecting the write pointer, while FL/RT serves dual roles depending on mode - critical for deterministic data replay in protocol stacks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Depth × Width | 1,024 × 9 bits - supports full-word buffering of 1K 9-bit frames, including parity bit for error-checked serial links |
| Access Time (tA) | 50 ns max - defines minimum time between write strobe and valid output during read-after-write flow-through |
| Supply Voltage | 4.5 V to 5.5 V - compatible with legacy 5 V TTL/CMOS logic families and industrial power rails |
| Operating Temperature | –40°C to +85°C - qualified for industrial environments without derating |
| Power Consumption | Max 440 mW active / 28 mW power-down - enables low-heat operation in dense backplane or embedded controller designs |
| Status Flags | EF, FF, XO/HF - provide real-time buffer occupancy feedback without polling; HF enables mid-buffer interrupt triggers |
Pinout & Package
7202LA50JG8 is housed in a 32-pin Plastic Leaded Chip Carrier (PLCC) package with J-lead configuration (J32-1), lead finish SnPb (EOL as of June 2018), and 0.050" pitch. The package is surface-mount compatible and supports standard reflow profiles for industrial assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| D0–D8 | Data Input Bus | 9-bit parallel input path; D8 may be used as parity bit in serial communication protocols |
| Q0–Q8 | Data Output Bus | Three-state outputs enabled only when R = LOW; high-impedance otherwise to avoid bus contention |
| W | Write Enable | Falling-edge triggered write strobe; initiates storage into next sequential location if FF = HIGH |
| R | Read Enable | Falling-edge triggered read strobe; outputs next sequential word if EF = HIGH |
| RS | Reset Input | Active-LOW synchronous reset that sets both read/write pointers to location zero at power-up or fault recovery |
| FL/RT | First Load / Retransmit | In single-device mode: RT pulse resets read pointer to start; in depth expansion: FL selects first device in chain |
| 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 = LOW when ≥512 words stored; in depth expansion: XO pulses to next device at last location |
| EF, FF | Status Outputs | EF = LOW when empty (read blocked); FF = LOW when full (write blocked); both are open-drain compatible |
| VCC, GND | Power Supply | Single 5 V supply; decoupling required per datasheet layout guidelines to maintain 50 ns timing integrity |
Key Features
| Feature | Design Value |
|---|---|
| Asynchronous Dual-Port Operation | Enables independent read/write clocks - eliminates need for clock domain crossing logic in mixed-speed systems |
| Auto-Retransmit Capability | RT pulse restores read pointer to origin without disturbing write pointer - essential for retry-based protocols like HDLC or UART framing |
| Expandable Architecture | Supports unlimited depth (via XI/XO daisy chain) and width (parallel devices) - scales from 1K×9 to multi-Mbit buffers without redesign |
| 9-Bit Data Path with Parity Option | D8 configurable as parity bit - simplifies implementation of error-detecting serial interfaces without external XOR logic |
| MIL-STD-883 Class B Compliance | Qualified for ruggedized industrial and defense applications requiring extended temperature range and reliability screening |
Applications
| Industrial Serial Bridge | Legacy Multiprocessor Bus Interface |
|---|---|
Use Scenario: Bridging RS-485 fieldbus nodes to a 5 V microcontroller with mismatched baud rates and bursty traffic patterns. IC Role / Device Role / Timing Role: Asynchronous rate-matching FIFO that absorbs transmit/receive jitter and prevents overrun/underrun during CPU interrupt latency. Use Value: Eliminates software flow control and guarantees lossless frame delivery using hardware EF/FF flags for deterministic handshaking. | Use Scenario: Interfacing two 5 V Z80 or 8086 CPUs sharing memory-mapped I/O over a common bus with different clock speeds. IC Role / Device Role / Timing Role: Dual-port buffer isolating read/write cycles across clock domains while preserving data ordering. Use Value: Enables lock-free inter-processor messaging with no arbitration logic - reduces PCB area and firmware complexity. |
| Protocol Stack Replay Buffer | Military Data Link Controller |
Use Scenario: Storing outbound packet payloads in a secure comms module where retransmission is mandated after ACK timeout. IC Role / Device Role / Timing Role: Retransmit-capable FIFO holding up to 1,024 bytes of encrypted payload ready for repeat transmission. Use Value: Hardware-accelerated retransmit avoids CPU reload of RAM buffers - cuts retry latency by >90% versus software-managed queues. | Use Scenario: Real-time telemetry aggregation in airborne avionics systems operating from –40°C to +85°C with EMI-hardened 5 V buses. IC Role / Device Role / Timing Role: MIL-STD-883 qualified FIFO buffering sensor data streams before encryption and RF modulation. Use Value: Guaranteed timing (50 ns tA) and radiation-tolerant packaging ensure deterministic latency under vibration and thermal cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar FIFO memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 7202LA35JG8 | 35 ns access time (vs. 50 ns); otherwise identical pinout, function, and package | Better suited for higher-speed 20 MHz+ shift frequency systems requiring tighter timing margins | Select when system timing budget requires <40 ns tA; verify power dissipation increase (ICC1 up to 80 mA vs. 65 mA typical) |
| 7202LA25JG8 | 25 ns access time; same 1,024×9 organization and PLCC-32 footprint | Targeted at legacy high-performance computing boards where 25 ns tA was originally specified | Use only if existing design was validated with 25 ns grade; not recommended for new designs due to EOL status acceleration |
Compared with 7202LA35JG8 and 7202LA25JG8, the 7202LA50JG8 trades raw speed for lower power and broader timing margin - making it optimal for thermally constrained industrial controllers where 50 ns latency is acceptable and robustness outweighs peak bandwidth.
Availability
7202LA50JG8 is available at Aetrix Electronics and suitable for industrial serial bridges, legacy multiprocessor bus interfaces, and military data link controllers requiring stable component supply amid ongoing obsolescence management.
Supply support for 7202LA50JG8 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, infrastructure, and IoT applications.
The IDT7200L/7201LA/7202LA family - now part of Renesas' legacy timing and interface portfolio - was designed specifically for deterministic, low-latency data buffering in asynchronous multiprocessing, telecom line cards, and military-grade serial subsystems.
FAQ
What is the maximum operating temperature range for the 7202LA50JG8?
The 7202LA50JG8 is rated for industrial temperature operation from –40°C to +85°C. It is not qualified for commercial (0°C to +70°C) or military (–55°C to +125°C) ranges - this specific variant uses the "I" temperature suffix per IDT's ordering nomenclature, confirmed in the datasheet's DC Operating Conditions table.
Does the 7202LA50JG8 support automatic retransmission without CPU intervention?
Yes, the 7202LA50JG8 supports hardware retransmission: pulsing the FL/RT pin LOW resets the internal read pointer to location zero while leaving the write pointer unchanged. This allows immediate replay of buffered data - a feature used in HDLC, SDLC, and custom protocol stacks where retry is triggered by external timeout logic, not software.
Can the 7202LA50JG8 be used in depth-expansion configurations?
Yes, the 7202LA50JG8 supports depth expansion via its XI and XO/HF pins. When XI is connected to XO of the prior device in a daisy chain, the device operates in depth-expansion mode - though the Half-Full Flag and Retransmit functions are disabled in this configuration per the datasheet's Operating Modes section.
Is the 7202LA50JG8 pin-compatible with other members of the IDT7200L family?
Yes, all IDT7200L/7201LA/7202LA devices in the same package (e.g., PLCC-32 J32-1) are pin- and functionally compatible across depth variants (256×9, 512×9, 1,024×9). The 7202LA50JG8 shares identical pinout and control logic with 7201LA50JG8 and 7200L50JG8 - enabling drop-in replacement when deeper buffering is needed.
What is the significance of the "G8" suffix in 7202LA50JG8?
The "G8" suffix in 7202LA50JG8 indicates tape-and-reel packaging (8 mm carrier tape, 250 units per reel) per IDT's ordering convention. It does not denote green (RoHS) compliance - green variants use "G" alone; "G8" specifies packaging format only, confirmed in the Ordering Information section of the datasheet.
7202LA50JG8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- 7200
- Package/Case:
- 32-LCC (J-Lead)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Size:
- 9K (1K x 9)
- Function:
- Asynchronous
- Data Rate:
- 15MHz
- Access Time:
- 35ns
- Voltage - Supply:
- 4.5 V ~ 5.5 V
- Current - Supply (Max):
- 80mA
- 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
7202LA50JG8 FAQ
1.How can I place an order for 7202LA50JG8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7202LA50JG8 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 7202LA50JG8 reliable?
The price and inventory of 7202LA50JG8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7202LA50JG8 is usually 5 days.
3.What payment methods are accepted for 7202LA50JG8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7202LA50JG8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7202LA50JG8?
7202LA50JG8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7202LA50JG8 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 7202LA50JG8?
For technical support, including 7202LA50JG8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7202LA50JG8 requirements.
6.How does Aetrix verify that 7202LA50JG8 is sourced from the original manufacturer or authorized distributors?
All 7202LA50JG8 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 7202LA50JG8 meets industry standards.
7.What is the process for return or replacement of 7202LA50JG8?
All 7202LA50JG8 units undergo pre-shipment inspection (PSI). If there is an issue with 7202LA50JG8, 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 7202LA50JG8 part is unused and in its original packaging.
Return procedure for 7202LA50JG8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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