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Renesas 7200L15SOGI
- Part No.:
- 7200L15SOGI
- Manufacturer:
- Renesas
- Category:
- FIFOs Memory
- Package:
- 28-SOIC (0.345", 8.77mm Width)
- Datasheet:
-
7200L15SOGI.pdf
- Description:
- IC FIFO ASYNC 256X9 15NS 28SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:100
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Product details
Overview
IDT7200L15SOGI from Renesas Electronics (formerly IDT) is a 256 x 9-bit asynchronous CMOS FIFO memory IC used for rate buffering and data synchronization between mismatched clock domains or bus protocols. It features 15 ns access time, 5 V single-supply operation, industrial temperature range (–40°C to +85°C), and status flags (Empty, Full, Half-Full) for overflow/underflow protection - deployed in telecom line cards, industrial PLC backplanes, and legacy military avionics data interfaces.
For engineers reviewing the IDT7200L15SOGI datasheet, IDT7200L15SOGI pinout, IDT7200L15SOGI application, or IDT7200L15SOGI equivalent, key selection criteria include verified 15 ns tA, confirmed SOIC-28 package with 9-bit bidirectional data flow-through capability, industrial-grade reliability, and compatibility with depth/width expansion architectures requiring precise flag timing (tREF, tRFF, tWHF).
Technical Context
The IDT7200L15SOGI implements a dual-port ring-buffer architecture with independent read/write pointers managed entirely internally - no external address lines required. Data flows first-in/first-out via edge-triggered Write (W) and Read (R) controls, with status flags generated from pointer arithmetic rather than address decoding.
It supports three operating modes: Single Device (XI grounded), Depth Expansion (daisy-chained via XI/XO), and Width Expansion (parallel devices sharing control lines). Retransmit (RT) resets the read pointer without affecting write pointer, enabling repeat transmission of buffered data - critical in serial protocol recovery applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 256 words × 9 bits - provides 256-byte buffer with dedicated parity/control bit slot for UART/RS-485 error checking. |
| Access Time (tA) | 15 ns max - enables reliable operation at up to 40 MHz shift frequency in industrial environments. |
| Supply Voltage | 4.5 V to 5.5 V - compatible with legacy 5 V TTL/CMOS logic families without level-shifting. |
| Operating Temperature | –40°C to +85°C - qualified for industrial control cabinets and outdoor base station enclosures. |
| Power Consumption | Active: ≤80 mA (440 mW), Power-down: ≤5 mA (28 mW) - suitable for thermally constrained embedded systems. |
| Status Flags | EF (Empty), FF (Full), XO/HF (Half-Full) - real-time hardware handshaking signals eliminate software polling overhead. |
| Retransmit Capability | RT input resets read pointer to zero on falling edge - enables deterministic retransmission of burst data without CPU intervention. |
Pinout & Package
Package: 28-pin SOIC (SO28-3), surface-mount, 300-mil width, Pb-free (Green) finish per ordering suffix "G".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| W | Write Enable | Falling-edge triggered write strobe; initiates storage of D0–D8 into next FIFO location if FF = HIGH. |
| R | Read Enable | Falling-edge triggered read strobe; outputs Q0–Q8 from current read pointer location if EF = HIGH. |
| D0–D8 | Data Inputs | 9-bit parallel input bus; accepts data during active W cycle; latched on W falling edge. |
| Q0–Q8 | Data Outputs | 9-bit parallel output bus; driven only when R = LOW; high-impedance otherwise. |
| EF | Empty Flag Output | Open-drain active-low signal indicating read pointer = write pointer - blocks further reads. |
| FF | Full Flag Output | Open-drain active-low signal indicating write pointer = (read pointer – 1) mod 256 - blocks further writes. |
| XO/HF | Expansion Out / Half-Full Flag | In single-device mode (XI = GND): active-low HF asserts when ≥128 locations filled; in depth expansion: pulse to next device on last write. |
| FL/RT | First Load / Retransmit Input | In single-device mode: RT resets read pointer to zero on falling edge; in depth expansion: FL selects first device in chain. |
| RS | Reset Input | Active-low synchronous reset - sets both read/write pointers to zero; required before initial write after power-up. |
| XI | Expansion In | Grounded for single-device operation; tied to XO of prior device in depth expansion daisy chain. |
| VCC, GND | Power Supply | Single 5 V supply; decoupling capacitor required within 10 mm of VCC pin per layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| Asynchronous Dual-Port Operation | Independent read/write clocks not required - eliminates clock domain crossing logic and simplifies interface to microcontrollers with non-synchronous peripherals. |
| Hardware Flow Control Flags | EF, FF, and HF are fully decoded and timed per AC specs (e.g., tREF ≤15 ns, tRFF ≤15 ns), enabling cycle-accurate handshaking without firmware delay loops. |
| Retransmit Function | RT input allows immediate restart of read sequence from beginning - essential for HDLC/SDLC frame retransmission and protocol stack recovery. |
| Expandable Architecture | Supports unlimited depth (daisy-chain) and width (parallel) expansion using only standard control signals - no external decode logic needed for multi-kiloword buffers. |
| 9-Bit Data Width | Dedicated ninth bit accommodates parity, CRC, or control flags - directly supports legacy serial protocols (e.g., MIL-STD-1553, ARINC 429) without external XOR logic. |
Applications
| Telecom Line Interface Buffering | Industrial PLC Backplane Synchronization |
|---|---|
Use Scenario: Buffering asynchronous data streams between T1/E1 framers and DSP-based channel banks where write clock (framer) and read clock (DSP) operate at slightly different frequencies. IC Role / Device Role / Timing Role: Asynchronous FIFO providing elastic store to absorb jitter and prevent bit slips; EF/FF flags drive DMA request logic. Use Value: Eliminates need for complex PLL-based clock recovery; 15 ns tA ensures sub-microsecond latency for real-time voice packet handling. | Use Scenario: Interfacing multiple I/O modules with differing scan rates on a Modbus RTU or Profibus DP backplane, preventing overrun during master-slave handshaking delays. IC Role / Device Role / Timing Role: Rate-matching buffer isolating slow serial control bus from fast sensor acquisition subsystems; HF flag triggers early warning interrupts. Use Value: Prevents loss of critical sensor alarms during transient bus congestion; industrial temp rating ensures reliability in uncooled control cabinets. |
| Military Avionics Data Recorder | Legacy Test Equipment Protocol Bridge |
Use Scenario: Capturing high-speed MIL-STD-1553B bus traffic for post-flight analysis, where bus activity is bursty and recorder sampling is periodic. IC Role / Device Role / Timing Role: First-in/first-out capture buffer with RT capability to replay captured frames for validation; RS ensures deterministic startup state. Use Value: Enables deterministic retransmission of flight-critical command sequences without host CPU involvement; –40°C to +85°C rating meets DO-160E environmental requirements. | Use Scenario: Bridging GPIB-controlled instruments to modern USB/Ethernet test hosts, converting parallel byte-wide transfers into packetized streams. IC Role / Device Role / Timing Role: Parallel-to-serial staging buffer allowing GPIB controller to complete full 8-bit handshake before host initiates USB IN transaction. Use Value: Resolves timing mismatch between GPIB's 1 µs strobe and USB's 125 µs frame boundary; 9-bit width accommodates GPIB's ATN/DAV handshaking bits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar FIFO memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74V293-15PGG | 256 × 18-bit, 15 ns, 3.3 V supply, TSSOP-56 package | Higher density and lower voltage; requires level translation for 5 V systems | Select when migrating to 3.3 V designs or needing wider word size; not drop-in compatible due to voltage and pinout mismatch. |
| IDT7200L15JGI | Same 256 × 9 organization and 15 ns speed, but PLCC-32 package with leaded construction | Offers through-hole or socketed option for prototyping or repair scenarios | Choose for manual assembly, field-replaceable modules, or legacy board rework where SOIC footprint is unavailable. |
Compared with SN74V293-15PGG and IDT7200L15JGI, the IDT7200L15SOGI delivers verified industrial-temperature 5 V operation in compact SOIC-28, making it optimal for cost-sensitive, space-constrained upgrades of legacy 5 V systems where pin compatibility and thermal robustness are prioritized over voltage scaling or density.
Availability
IDT7200L15SOGI is available at Aetrix Electronics and suitable for telecom infrastructure, industrial automation, and defense electronics requiring stable component supply amid end-of-life transitions for legacy FIFOs.
Supply support for IDT7200L15SOGI 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 IDT7200L15SOGI belongs to Renesas' legacy IDT FIFO product line, engineered specifically for deterministic, low-latency data buffering in mixed-signal and real-time control systems where asynchronous interface bridging is critical.
FAQ
What is the maximum operating frequency supported by IDT7200L15SOGI?
IDT7200L15SOGI supports a maximum shift frequency of 40 MHz under industrial conditions (–40°C to +85°C), derived from its 15 ns access time and verified AC timing parameters including tRC = 25 ns and tWC = 25 ns. This enables reliable use in high-speed serial interface bridges and real-time data acquisition systems without violating setup/hold margins.
Does IDT7200L15SOGI support 3.3 V operation?
No, IDT7200L15SOGI is specified exclusively for 5 V operation (VCC = 4.5 V to 5.5 V) and is not 3.3 V tolerant. Its input thresholds (VIH = 2.0 V min) and output drive characteristics are optimized for TTL/5 V CMOS logic families. Using it with 3.3 V controllers requires level-shifting circuitry to avoid undefined logic states or excessive current draw.
How does the Half-Full Flag (HF) behave in IDT7200L15SOGI?
In IDT7200L15SOGI, the XO/HF pin functions as the Half-Full Flag when Expansion In (XI) is grounded. HF goes LOW after the 128th write operation and remains LOW until the difference between write and read pointers drops to ≤128 locations, then resets HIGH on the rising edge of the next Read (R) pulse - providing early buffer occupancy warning for proactive data draining.
Can IDT7200L15SOGI be used in depth expansion mode with other FIFO sizes?
No - depth expansion requires identical memory depth across all daisy-chained devices. IDT7200L15SOGI (256 × 9) may only be cascaded with other IDT7200-series parts (e.g., IDT7200L15JGI), not with IDT7201LA or IDT7202LA variants. Mixing depths violates pointer alignment and causes unpredictable flag behavior per the datasheet's Operating Modes section.
Is the Retransmit (RT) function available in all operating modes of IDT7200L15SOGI?
The Retransmit (RT) function is only available in Single Device Mode (XI = GND) and Width Expansion Mode. It is explicitly disabled in Depth Expansion Mode per the datasheet, as RT would conflict with distributed pointer management across chained devices. Attempting RT in depth expansion yields undefined flag states and must be avoided in system design.
7200L15SOGI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- 7200
- Package/Case:
- 28-SOIC (0.345", 8.77mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Size:
- 2.25K (256 x 9)
- Function:
- Asynchronous
- Data Rate:
- 40MHz
- Access Time:
- 15ns
- 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:
- -40°C ~ 85°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-SOIC
7200L15SOGI FAQ
1.How can I place an order for 7200L15SOGI through Aetrix?
Please submit a Request for Quotation (RFQ) for 7200L15SOGI 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 7200L15SOGI reliable?
The price and inventory of 7200L15SOGI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7200L15SOGI is usually 5 days.
3.What payment methods are accepted for 7200L15SOGI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7200L15SOGI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7200L15SOGI?
7200L15SOGI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7200L15SOGI 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 7200L15SOGI?
For technical support, including 7200L15SOGI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7200L15SOGI requirements.
6.How does Aetrix verify that 7200L15SOGI is sourced from the original manufacturer or authorized distributors?
All 7200L15SOGI 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 7200L15SOGI meets industry standards.
7.What is the process for return or replacement of 7200L15SOGI?
All 7200L15SOGI units undergo pre-shipment inspection (PSI). If there is an issue with 7200L15SOGI, 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 7200L15SOGI part is unused and in its original packaging.
Return procedure for 7200L15SOGI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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