My Inquiry
My Account
Renesas 7202LA12JG
- Part No.:
- 7202LA12JG
- Manufacturer:
- Renesas
- Category:
- FIFOs Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
7202LA12JG.pdf
- Description:
- IC FIFO ASYNC 1KX9 12NS 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,128
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
IDT7202LA12JG 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), and status flags (Empty, Full, Half-Full) for overflow/underflow protection - deployed in industrial communications controllers and legacy military avionics interfaces.
For engineers reviewing the IDT7202LA12JG datasheet, IDT7202LA12JG pinout, IDT7202LA12JG application, or IDT7202LA12JG equivalent, key selection criteria include its 1,024-word depth, 9-bit data width with parity support, 5 V operation, TSSOP-32 package compatibility, and retransmit capability for protocol recovery in serial data links.
Technical Context
This FIFO implements dual-port, first-in/first-out operation using ring-pointer logic with no external address bus required. Read and write operations are fully asynchronous and can occur simultaneously, enabling real-time buffering in multiprocessing systems without arbitration overhead.
It supports three operating modes: single-device (XI grounded), depth expansion (daisy-chained via XI/XO), and width expansion (parallel devices). The FL/RT pin serves dual roles - First Load in depth expansion and Retransmit enable in single mode - while HF flag functionality is disabled in expanded configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Depth × Width | 1,024 × 9 bits - supports full buffering of one 9-bit frame per word, ideal for UART/HDLC packet payloads with parity bit. |
| Access Time (tA) | 12 ns max - enables ≤83 MHz effective throughput in flow-through read/write scenarios. |
| Supply Voltage | 4.5–5.5 V - compatible with legacy 5 V TTL/CMOS logic families and industrial power rails. |
| Power Consumption | Active: 440 mW max; Power-down: 28 mW max - suitable for thermally constrained embedded modules. |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade applications including factory automation and transportation control. |
| Status Flags | EF (Empty), FF (Full), XO/HF (Half-Full or Expansion Out) - provides real-time buffer occupancy feedback without polling overhead. |
| Retransmit Capability | RT pulse resets read pointer to start - enables deterministic retransmission of buffered data after error detection in serial protocols. |
Pinout & Package
The IDT7202LA12JG is housed in a 32-pin Plastic Leaded Chip Carrier (PLCC) package with J32-1 footprint, lead finish SnPb (EOL), and standard 0.050" pitch. It is not available in SOIC or DIP variants per ordering guide.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| D0–D8 | Data Input Bus | 9-bit parallel input path; supports parity bit assignment at user discretion for error-checked comms. |
| Q0–Q8 | Data Output Bus | Three-state outputs enabled only during active read (R = LOW); high-Z otherwise prevents bus contention. |
| W | Write Enable | Falling-edge triggered write; initiates storage into next sequential location independent of read activity. |
| R | Read Enable | Falling-edge triggered read; outputs valid data on Q0–Q8 after tA, then returns to high-Z on R rising edge. |
| RS | Reset | Active-LOW synchronous reset; forces both read/write pointers to location zero - mandatory before first write. |
| FL/RT | First Load / Retransmit | In single mode: RT pulse resets read pointer; in depth expansion: FL = LOW designates 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 asserts when ≥512 words stored; in depth expansion: pulses to next device upon last-location write. |
| EF, FF | Status Flags | Open-drain outputs; EF = LOW indicates empty; FF = LOW blocks further writes to prevent overflow. |
| VCC, GND | Power Supply | Single 5 V supply; decoupling required near pins due to fast switching transients (CIN/COUT = 8 pF). |
Key Features
| Feature | Design Value |
|---|---|
| Asynchronous Dual-Port Architecture | Enables independent read/write clocks - eliminates need for clock domain crossing logic in heterogeneous systems. |
| Auto-Retransmit Function | RT pulse restores read pointer to start without affecting write pointer - critical for ARQ-based serial protocols like MIL-STD-1553B. |
| Expandable Memory Depth & Width | Supports unlimited depth via XI/XO chaining and arbitrary width via parallel data buses - scales from 1k×9 to multi-Mbit buffers without redesign. |
| 9-Bit Data Path with Parity Option | Extra bit allows user-defined parity generation/checking - directly supports error-detection in RS-232/RS-422/HDLC implementations. |
| MIL-STD-883 Class B Compliance | Qualified for military temperature range (–55°C to +125°C) and reliability testing - used in flight-critical subsystems where commercial parts are prohibited. |
Applications
| Industrial Serial Gateway | Military Avionics Interface |
|---|---|
Use Scenario: Bridging legacy RS-422 fieldbus to modern CAN FD controller in factory PLC backplane. IC Role / Device Role / Timing Role: Asynchronous FIFO buffers variable-length command packets between mismatched 1.25 Mbps RS-422 and 5 Mbps CAN FD domains. Use Value: Prevents data loss during burst transfers; EF/FF flags enable software-controlled throttling without hardware handshaking. | Use Scenario: Buffering telemetry frames between MIL-STD-1553B remote terminal and onboard DSP processor. IC Role / Device Role / Timing Role: Rate-matching FIFO absorbs timing jitter between 1 Mbps 1553B bus and 100 MHz DSP memory interface. Use Value: RT function enables guaranteed retransmission of corrupted frames; HF flag triggers early DMA prefetch to reduce latency. |
| Telecom Line Card Buffer | Test Equipment Pattern Generator |
Use Scenario: Storing E1/T1 framing sync words and payload in telecom line interface unit. IC Role / Device Role / Timing Role: 1,024-word depth holds >125 µs of 2.048 Mbps E1 data - sufficient for full frame alignment window. Use Value: 12 ns access time ensures sub-cycle latency for real-time CRC insertion; 9-bit width accommodates 8-bit data + parity bit. | Use Scenario: Holding stimulus patterns for automated boundary-scan test system with variable clock rates. IC Role / Device Role / Timing Role: FIFO acts as pattern sequencer between slow host CPU and high-speed pattern generator clock. Use Value: Retransmit capability allows repeat execution of failed test sequences without reloading from host memory. |
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, 3.3 V core, 12 ns access, TQFP-100 package | Higher density and lower voltage but incompatible pinout and power domain; requires level-shifting for 5 V systems | Select if migrating to 3.3 V architecture and needing wider data path; not drop-in replacement. |
| IDT7202LA15JG | Same 1,024 × 9 organization and PLCC-32 package, but 15 ns access time and higher power budget (ICC1 ≤ 80 mA) | Lower performance margin; acceptable where 12 ns timing is not required, e.g., <66 MHz clock domains | Drop-in substitute for cost-sensitive designs where 12 ns timing headroom is unnecessary. |
Compared with SN74V293-12PAG and IDT7202LA15JG, the IDT7202LA12JG delivers optimal balance of speed, 5 V compatibility, and industrial temperature range - making it preferred for legacy 5 V systems requiring deterministic 12 ns latency and MIL-STD-883 qualification.
Availability
IDT7202LA12JG is available at Aetrix Electronics and suitable for industrial serial gateways, military avionics interfaces, telecom line cards, and test equipment pattern generators requiring stable component supply amid end-of-life transitions.
Supply support for IDT7202LA12JG 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 formed from the merger of NEC Electronics, Renesas Technology, and IDT - specializing in microcontrollers, analog, and legacy interface solutions.
The IDT7200L/7201LA/7202LA family was designed by IDT specifically for high-reliability asynchronous data buffering in industrial, aerospace, and defense systems where deterministic latency and EMI-resilient 5 V operation are essential.
FAQ
What is the maximum operating frequency supported by IDT7202LA12JG?
IDT7202LA12JG does not operate on a fixed clock; its maximum effective throughput is determined by access time and cycle timing. With 12 ns access time and minimum read/write cycle times of 20 ns, it supports up to 50 MHz sustained data transfer in flow-through mode. Actual system frequency depends on external control logic timing margins and load capacitance.
Does IDT7202LA12JG support 3.3 V operation?
No, IDT7202LA12JG is specified only for 4.5–5.5 V operation per DC Electrical Characteristics table. Its input thresholds (VIH = 2.0 V min) and output drive strength are optimized for 5 V TTL/CMOS logic families. Using it with 3.3 V supplies risks unreliable flag assertion and increased ICC2 leakage.
Can IDT7202LA12JG be used in depth expansion mode with mixed speed grades?
No - all devices in a depth-expanded chain must share identical access time (tA) and speed grade. Mixing IDT7202LA12JG (12 ns) with slower variants (e.g., 15 ns or 20 ns) violates timing propagation requirements for XI/XO handshake signals and causes metastability in flag synchronization across the chain.
Is the Half-Full Flag (HF) available in width expansion mode?
Yes, the Half-Full Flag remains functional in width expansion mode because all devices share the same XI ground reference and operate in single-device configuration. HF asserts when any device reaches 512 stored words - providing aggregate buffer occupancy indication without additional logic.
What happens to the write pointer during a Retransmit (RT) pulse on IDT7202LA12JG?
During an RT pulse, only the read pointer resets to location zero; the write pointer remains unchanged and continues incrementing on subsequent W pulses. This preserves un-read data while enabling retransmission from the beginning - a key requirement for protocol recovery in HDLC or MIL-STD-1553B implementations.
7202LA12JG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- 7200
- Package/Case:
- 32-LCC (J-Lead)
- Packaging:
- Tube
- 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)
7202LA12JG FAQ
1.How can I place an order for 7202LA12JG through Aetrix?
Please submit a Request for Quotation (RFQ) for 7202LA12JG 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 7202LA12JG reliable?
The price and inventory of 7202LA12JG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7202LA12JG is usually 5 days.
3.What payment methods are accepted for 7202LA12JG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7202LA12JG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7202LA12JG?
7202LA12JG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7202LA12JG 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 7202LA12JG?
For technical support, including 7202LA12JG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7202LA12JG requirements.
6.How does Aetrix verify that 7202LA12JG is sourced from the original manufacturer or authorized distributors?
All 7202LA12JG 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 7202LA12JG meets industry standards.
7.What is the process for return or replacement of 7202LA12JG?
All 7202LA12JG units undergo pre-shipment inspection (PSI). If there is an issue with 7202LA12JG, 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 7202LA12JG part is unused and in its original packaging.
Return procedure for 7202LA12JG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7202LA12JG Tags
-
7201LA15JGI
Renesas
-
7204L12JG
Renesas
-
72V82L15PAG8
Renesas
-
7205L15JGI
Renesas
-
7208L20JG
Renesas
-
72V2105L10PFG
Renesas
-
72V2111L15PFGI
Renesas
-
72V2113L6PFG
Renesas
-
72V36110L6PFG
Renesas
-
SN74ALVC7804-40DL
Texas Instruments
-
7202LA25JGI
Renesas
-
SN74V245-15PAG
Texas Instruments
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
