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Renesas 7202LA12JG8
- Part No.:
- 7202LA12JG8
- Manufacturer:
- Renesas
- Category:
- FIFOs Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
7202LA12JG8.pdf
- Description:
- IC FIFO ASYNC 1KX9 12NS 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:3,543
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Product details
Overview
IDT7202LA12JG8 from Renesas Electronics (formerly IDT) is a 1,024 × 9-bit asynchronous CMOS FIFO memory IC used for rate buffering and data synchronization between mismatched clock domains or bus protocols. It features 12 ns access time, ultra-low active power (440 mW max), full/half-full/empty status flags, and retransmit capability - deployed in industrial communications controllers and legacy military avionics data interfaces.
For engineers reviewing the IDT7202LA12JG8 datasheet, IDT7202LA12JG8 pinout, IDT7202LA12JG8 application, or IDT7202LA12JG8 equivalent, key selection criteria include its 1,024-word depth, 9-bit data width with parity support, TSSOP-32 package compatibility, 5 V single-supply operation, and EOL status requiring last-time-buy planning.
Technical Context
This FIFO implements dual-port, first-in/first-out data flow using ring-pointer architecture - eliminating external address management. Read and write operations are fully asynchronous and can occur simultaneously without arbitration logic.
It supports three operating modes: single-device (XI grounded), depth expansion (daisy-chained via XI/XO), and width expansion (parallel devices). Retransmit (RT) resets the read pointer to zero without affecting the write pointer, enabling repeat transmission of buffered data - critical in serial protocol recovery applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Depth × Width | 1,024 × 9 bits - supports up to 1,024 data words with optional parity/control bit per word |
| Access Time (tA) | 12 ns - enables reliable operation at up to 50 MHz shift frequency in commercial/industrial temp ranges |
| Supply Voltage | 4.5 V to 5.5 V - compatible with standard 5 V TTL/CMOS logic families and legacy industrial power rails |
| Power Consumption | Active: ≤440 mW; Power-down: ≤28 mW - reduces thermal load in dense PCB layouts and extends system-level power budget |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded systems including factory automation and telecom line cards |
| Status Flags | EF (Empty), FF (Full), XO/HF (Half-Full or Expansion Out) - provides real-time buffer occupancy feedback without polling overhead |
| Retransmit Function | RT input pulses reset read pointer to start - enables deterministic retransmission of buffered packets after error detection |
Pinout & Package
Package: 32-pin Plastic Leaded Chip Carrier (PLCC), J-lead variant (J32-1), body size 13.97 mm × 13.97 mm, lead pitch 1.27 mm, RoHS-compliant green finish (G suffix).
| 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 at user discretion |
| Q0–Q8 | Data Output Bus | 9-bit tristate outputs enabled only during active read cycle (R low); high-impedance otherwise |
| 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; sets both read/write pointers to location zero; required before first write after power-up |
| FL/RT | First Load / Retransmit | Dual-function: LOW = first device in depth chain; HIGH + pulse = retransmit (read pointer reset) |
| 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 goes LOW when ≥512 words stored; in depth mode: pulses to next device at last location |
| EF, FF | Status Outputs | Open-drain, active-low flags: EF = LOW when empty; FF = LOW when full (write blocked) |
| VCC, GND | Power Supply | Single 5 V supply; decoupling required near pins due to fast switching transients |
Key Features
| Feature | Design Value |
|---|---|
| Asynchronous Dual-Port Architecture | Enables independent, concurrent read/write without clock domain crossing logic or external arbitration |
| Expandable Memory Depth | Unlimited depth via daisy-chained XI/XO signals - e.g., three IDT7202LA devices yield 3,072 × 9 FIFO |
| 9-Bit Data Width with Parity Support | Extra bit allows hardware-level error checking in serial communication links (e.g., RS-422/485, MIL-STD-1553) |
| Retransmit Capability | RT pulse restores read pointer to origin - eliminates software overhead for packet retransmission in protocol stacks |
| Industrial Temperature Range | Validated operation from –40°C to +85°C - suitable for uncontrolled environments like base station cabinets or rail-side controllers |
| MIL-STD-883 Class B Compliance | Qualified for military applications per drawing #5962-89536 - includes burn-in, hermeticity, and radiation tolerance testing |
Applications
| Industrial Serial Protocol Bridge | Military Avionics Data Buffer |
|---|---|
Use Scenario: Bridging UARTs operating at different baud rates in programmable logic controller (PLC) backplanes. IC Role / Device Role / Timing Role: Asynchronous FIFO decouples transmit/receive clocks while maintaining data integrity across timing boundaries. Use Value: Eliminates data loss during burst transfers; 1,024-word depth accommodates worst-case latency spikes in Modbus RTU polling cycles. | Use Scenario: Buffering sensor telemetry between flight computer and analog-to-digital converter in tactical UAVs. IC Role / Device Role / Timing Role: Rate-matching FIFO synchronizes 1 MHz ADC sampling with 100 kHz flight control loop processing. Use Value: MIL-STD-883 qualification ensures reliability under vibration, temperature cycling, and EMI stress encountered in airborne platforms. |
| Legacy Telecom Line Card | Automated Test Equipment (ATE) Pattern Memory |
Use Scenario: Interfacing T1/E1 framers with microcontroller-based channel banks in decommissioned central office switches. IC Role / Device Role / Timing Role: First-in/first-out buffer absorbs jitter between DS1 framing clock and local processor bus. Use Value: 12 ns access time supports 2.048 Mbps E1 data rates with margin; EF/FF flags prevent overrun in bursty traffic scenarios. | Use Scenario: Storing stimulus/response vectors for high-speed digital IC functional testing. IC Role / Device Role / Timing Role: High-speed pattern memory staging data between test controller and DUT interface logic. Use Value: Retransmit (RT) function enables rapid vector replay without reloading from host memory - reducing test cycle time by >15%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar FIFO memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74V293-12PAG | 1,024 × 18-bit, 12 ns, 3.3 V supply; wider data bus, lower voltage, no RT pin | Requires level-shifting for 5 V systems; lacks retransmit for protocol recovery | Choose when migrating to 3.3 V designs and needing wider word width |
| IDT7202LA15JG8 | Same 1,024 × 9 organization but 15 ns access time; higher temperature margin (–55°C to +125°C available) | Slower timing margin; military-grade version supports extended temperature range | Choose when prioritizing extended temperature operation over speed |
Compared with SN74V293-12PAG and IDT7202LA15JG8, the IDT7202LA12JG8 uniquely balances 12 ns speed, 5 V compatibility, retransmit functionality, and industrial temperature rating - making it optimal for legacy 5 V systems requiring deterministic packet recovery.
Availability
IDT7202LA12JG8 is available at Aetrix Electronics and suitable for industrial serial protocol bridges, military avionics data buffers, and legacy telecom line cards requiring stable component supply during end-of-life transition periods.
Supply support for IDT7202LA12JG8 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 specializing in microcontrollers, analog, power, and timing solutions - formed through the merger of NEC Electronics and Renesas Technology.
IDT7202LA12JG8 belongs to the IDT7200L/7201LA/7202LA family of asynchronous FIFOs designed for rate buffering, clock domain isolation, and data synchronization in industrial, telecom, and defense systems.
FAQ
What is the memory organization and data width of the IDT7202LA12JG8?
The IDT7202LA12JG8 is a 1,024 × 9-bit asynchronous FIFO memory. Its 9-bit width supports eight data bits plus one parity or control bit - enabling hardware-level error checking in serial communication applications. This configuration is fixed and not programmable.
Does the IDT7202LA12JG8 support retransmission of buffered data?
Yes, the IDT7202LA12JG8 supports retransmission via its FL/RT pin. When pulsed LOW in single-device mode, the RT function resets the internal read pointer to the first location while preserving the write pointer - allowing repeat reads of the entire buffer without reloading. This is essential for protocol recovery in serial data links.
What package type and lead finish does the IDT7202LA12JG8 use?
The IDT7202LA12JG8 uses a 32-pin Plastic Leaded Chip Carrier (PLCC) package (J32-1), with green RoHS-compliant finish indicated by the "G" suffix. It is not offered in SnPb lead finish, which was discontinued per PDN# SP-17-02 with last-time-buy ending June 15, 2018.
Is the IDT7202LA12JG8 suitable for industrial temperature applications?
Yes, the IDT7202LA12JG8 is rated for industrial temperature operation from –40°C to +85°C. This qualification is explicitly stated in the datasheet's "Recommended DC Operating Conditions" table and applies to all speed grades including the 12 ns variant.
How does the IDT7202LA12JG8 handle full and empty conditions during read/write operations?
The IDT7202LA12JG8 uses dedicated open-drain EF (Empty Flag) and FF (Full Flag) outputs. EF goes LOW when the read pointer equals the write pointer - blocking further reads. FF goes LOW when the write pointer is one location behind the read pointer - blocking further writes. Both flags update within specified timing windows (e.g., tREF, tRFF) after respective control edges.
7202LA12JG8 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:
- 50MHz
- Access Time:
- 12ns
- 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 (14x11.46)
7202LA12JG8 FAQ
1.How can I place an order for 7202LA12JG8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 7202LA12JG8 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 7202LA12JG8 reliable?
The price and inventory of 7202LA12JG8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7202LA12JG8 is usually 5 days.
3.What payment methods are accepted for 7202LA12JG8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7202LA12JG8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7202LA12JG8?
7202LA12JG8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7202LA12JG8 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 7202LA12JG8?
For technical support, including 7202LA12JG8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7202LA12JG8 requirements.
6.How does Aetrix verify that 7202LA12JG8 is sourced from the original manufacturer or authorized distributors?
All 7202LA12JG8 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 7202LA12JG8 meets industry standards.
7.What is the process for return or replacement of 7202LA12JG8?
All 7202LA12JG8 units undergo pre-shipment inspection (PSI). If there is an issue with 7202LA12JG8, 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 7202LA12JG8 part is unused and in its original packaging.
Return procedure for 7202LA12JG8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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