My Inquiry
My Account
Renesas 7201LA12TPG
- Part No.:
- 7201LA12TPG
- Manufacturer:
- Renesas
- Category:
- FIFOs Memory
- Package:
- 28-DIP (0.300", 7.62mm)
- Datasheet:
-
7201LA12TPG.pdf
- Description:
- IC FIFO ASYNC 512X9 12NS 28DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,607
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
7201LA12TPG from Renesas Electronics (formerly IDT) is a 512 x 9-bit CMOS asynchronous FIFO memory IC used for rate buffering and data synchronization between mismatched clock domains or bus protocols. It features 12 ns access time, ultra-high-speed operation, active power consumption ≤80 mA (440 mW max), and supports single-device, depth-expansion, and width-expansion configurations. It is deployed in industrial communications interfaces requiring deterministic latency and overflow/underflow protection.
For engineers reviewing the 7201LA12TPG datasheet, 7201LA12TPG pinout, 7201LA12TPG application, or 7201LA12TPG equivalent, key selection criteria include its 512-word depth with 9-bit data width (supporting parity), dual asynchronous read/write ports, status flag behavior (EF/FF/HF), retransmit capability, and TSSOP-28 package compatibility with legacy PCB footprints.
Technical Context
The 7201LA12TPG implements a ring-pointer architecture with no external address bus - data flows strictly FIFO via internal sequential pointers controlled by W (write) and R (read) strobes. Its 9-bit data path enables user-configurable parity bit handling, critical for error-checked serial communications links.
It operates across commercial (0°C to +70°C), industrial (–40°C to +85°C), and military (–55°C to +125°C) temperature ranges, with full MIL-STD-883 Class B compliance for military-grade versions. The device supports auto-retransmit (RT) to reset the read pointer without affecting the write pointer, and includes expansion logic for unlimited depth/width scalability using XI/XO daisy-chaining.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 512 × 9-bit FIFO (4,608 bits total; 9-bit width supports 8 data + 1 parity bit) |
| Access Time (tA) | 12 ns - defines minimum time from W/R edge to valid Q/D output; enables ≤50 MHz shift frequency |
| Supply Voltage (VCC) | 4.5 V to 5.5 V - compatible with standard 5 V TTL/CMOS logic rails; no 3.3 V operation |
| Active Current (ICC1) | ≤80 mA (max) at 5 V - corresponds to ≤440 mW active power, enabling thermal management in dense layouts |
| Status Flags | EF (Empty), FF (Full), XO/HF (Half-Full or Expansion Out) - provide real-time buffer occupancy feedback without polling |
| Retransmit Pulse Width (tRT) | ≥12 ns - minimum low pulse width on FL/RT pin to reliably reset read pointer to start of memory |
| Operating Temperature | –40°C to +85°C (industrial grade) - validated for use in factory automation and telecom infrastructure |
Pinout & Package
7201LA12TPG is housed in a 28-pin Thin Plastic DIP (TP) package - 0.3-inch body width, through-hole mounting, lead finish SnPb (EOL per PDN# SP-17-02). Pinout matches industry-standard 28-pin FIFO footprint.
| 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 |
| Q0–Q8 | Data Output Bus | 9-bit high-impedance tri-state outputs enabled only during active R low; data valid after tA |
| W | Write Enable | Falling-edge-triggered write strobe; initiates storage into next FIFO location if FF = HIGH |
| R | Read Enable | Falling-edge-triggered read strobe; outputs next FIFO word if EF = HIGH; drives Q0–Q8 low-Z |
| RS | Reset | Active-low synchronous reset; sets both read/write pointers to location zero; required before first write |
| FL/RT | First Load / Retransmit | Dual-function input: grounded for first device in depth expansion; pulsed LOW to reset read pointer to start |
| EF | Empty Flag | Open-drain output; goes LOW when read pointer = write pointer - prevents underflow reads |
| FF | Full Flag | Open-drain output; goes LOW when write pointer = (read pointer – 1); blocks further writes to prevent overflow |
| XO/HF | Expansion Out / Half-Full Flag | Dual-function: in single mode, indicates ≥50% fill (HF); in depth expansion, signals end-of-memory to next device (XO) |
| XI | Expansion In | Configures mode: grounded = single-device mode; tied to XO of prior device = depth expansion |
| VCC, GND | Power Supply | Single 5 V supply; decoupling required near pins 14 (GND) and 27 (VCC) per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Asynchronous Dual-Port Operation | Independent W and R clocks enable seamless bridging between unrelated timing domains (e.g., UART ↔ microcontroller) |
| Auto-Retransmit Capability | Pulsing FL/RT LOW resets read pointer to start without disturbing write pointer - essential for protocol retransmission (e.g., HDLC) |
| Expandable Architecture | Supports unlimited depth (via XI/XO daisy-chain) and width (parallel devices) - scales from 512×9 to multi-kiloword buffers without redesign |
| 9-Bit Data Path with Parity Support | Native 9-bit width allows dedicated parity bit - eliminates need for external XOR logic in error-detecting serial links |
| MIL-STD-883 Class B Compliance | Qualified for military applications including avionics and ruggedized comms; meets screening, burn-in, and environmental test requirements |
Applications
| Industrial Serial Bridge | Avionics Data Buffer |
|---|---|
|
Use Scenario: Isolating RS-485 fieldbus nodes from a central controller operating at different baud rates and clock domains. IC Role / Device Role / Timing Role: Asynchronous FIFO acting as a rate-matching buffer between UART peripherals and host MCU; absorbs jitter and burst traffic. Use Value: Prevents UART overrun/underrun errors; eliminates software flow control overhead; enables deterministic latency ≤12 ns + tRC. |
Use Scenario: Buffering ARINC 429 receive data streams in flight control computers where timing predictability and EMI resilience are critical. IC Role / Device Role / Timing Role: MIL-STD-883 qualified FIFO providing deterministic, non-blocking data staging between ARINC receiver and safety-critical processor. Use Value: Guarantees no data loss under transient voltage spikes; supports retransmit for lost-frame recovery; meets DO-254 hardware assurance level. |
| Legacy System Interfacing | Test Equipment Pattern Memory |
|
Use Scenario: Adapting vintage 8-bit microprocessor systems (e.g., Z80) to modern FPGA-based logic analyzers with higher throughput. IC Role / Device Role / Timing Role: Synchronizing slow CPU write bursts to fast capture engine; uses EF/FF flags for handshaking. Use Value: Enables drop-in replacement of obsolete FIFOs; preserves existing PCB layout (TSSOP-28 footprint); supports 5 V TTL compatibility. |
Use Scenario: Storing stimulus/response patterns in automated test equipment (ATE) for semiconductor wafer probing. IC Role / Device Role / Timing Role: High-reliability 512-word pattern buffer with retransmit support for repeatable test vector playback. Use Value: Ensures bit-accurate pattern replay across temperature extremes (–40°C to +85°C); HF flag enables real-time fill-level monitoring during test execution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar FIFO memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 7201LA15TPG | 15 ns access time (vs. 12 ns); otherwise identical pinout, function, and packaging | Suitable where 12 ns timing margin is unnecessary; lower cost; same industrial temp range | Select when system timing budget allows ≥15 ns latency; reduces risk of marginal timing closure |
| 7201LA20TPG | 20 ns access time; higher noise immunity due to relaxed timing; identical 512×9 organization and flag logic | Better suited for electrically noisy environments (e.g., motor drive cabinets) where setup/hold margins are critical | Prefer in high-EMI industrial settings where robustness outweighs peak speed; maintains full backward compatibility |
Compared with 7201LA12TPG, the 15 ns and 20 ns variants trade deterministic low-latency performance for improved timing margin and noise tolerance - all retain identical pinout, feature set, and industrial temperature rating, making them direct drop-in alternatives where speed headroom permits.
Availability
7201LA12TPG is available at Aetrix Electronics and suitable for industrial serial bridge, avionics data buffering, and legacy system interfacing requiring stable component supply and long-term obsolescence management.
Supply support for 7201LA12TPG 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, and infrastructure markets.
The IDT7200/7201/7202 family - now part of Renesas' legacy timing and interface portfolio - was engineered specifically for deterministic, low-latency data buffering in multiprocessing, communications, and real-time control systems.
FAQ
What is the maximum operating frequency supported by the 7201LA12TPG?
The 7201LA12TPG supports a maximum shift frequency of 50 MHz, derived from its 12 ns access time and associated timing parameters (e.g., tRC = 20 ns min). This enables reliable operation in high-throughput serial interfaces such as T1/E1 framers and packetized data links where precise FIFO latency is critical.
Does the 7201LA12TPG support 3.3 V operation?
No, the 7201LA12TPG requires a 4.5 V to 5.5 V supply (VCC). It is not 3.3 V tolerant and lacks internal level-shifting. Interfacing with 3.3 V logic requires external voltage translators or bus switches to avoid damage and ensure signal integrity on D0–D8, Q0–Q8, and control lines.
How does the retransmit function work on the 7201LA12TPG?
When FL/RT is pulsed LOW while XI is grounded (single-device mode), the 7201LA12TPG resets its internal read pointer to location zero without altering the write pointer. This enables retransmission of buffered data - vital for protocols like HDLC or custom command-response sequences where frame retry is required.
Can the 7201LA12TPG be used in depth-expansion mode with mixed-speed devices?
No - depth expansion requires all cascaded 7201LA12TPG devices to share identical speed grades (e.g., all 12 ns). Mixing access times disrupts XI/XO handshake timing and risks metastability in the expansion chain. Renesas specifies strict timing alignment across the daisy chain for reliable boundary detection.
Is the 7201LA12TPG still in production or subject to obsolescence?
The 7201LA12TPG entered End-of-Life (EOL) per Renesas PDN# SP-17-02, with last-time-buy expiring June 15, 2018. Aetrix Electronics maintains legacy inventory with full traceability and offers lifecycle coordination support, including cross-reference guidance and long-term stocking programs for industrial and defense customers.
7201LA12TPG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- 7200
- Package/Case:
- 28-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Size:
- 4.5K (512 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:
- Through Hole
- Supplier Device Package:
- 28-PDIP
7201LA12TPG FAQ
1.How can I place an order for 7201LA12TPG through Aetrix?
Please submit a Request for Quotation (RFQ) for 7201LA12TPG 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 7201LA12TPG reliable?
The price and inventory of 7201LA12TPG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7201LA12TPG is usually 5 days.
3.What payment methods are accepted for 7201LA12TPG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7201LA12TPG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7201LA12TPG?
7201LA12TPG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7201LA12TPG 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 7201LA12TPG?
For technical support, including 7201LA12TPG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7201LA12TPG requirements.
6.How does Aetrix verify that 7201LA12TPG is sourced from the original manufacturer or authorized distributors?
All 7201LA12TPG 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 7201LA12TPG meets industry standards.
7.What is the process for return or replacement of 7201LA12TPG?
All 7201LA12TPG units undergo pre-shipment inspection (PSI). If there is an issue with 7201LA12TPG, 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 7201LA12TPG part is unused and in its original packaging.
Return procedure for 7201LA12TPG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7201LA12TPG 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…
