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AL422B-PBF
AL422B-PBF
| Part Number | AL422B-PBF |
|---|---|
| Manufacturer | AverLogic Technologies |
| Category | Integrated Circuits (ICs) > Memory > FIFO Memories |
| Description | 3M-Bit High-Speed Video FIFO Memory, 384K × 8-Bit Configuration, 5V/3.3V Tolerant, 28-SOP Package. |
| Stock Status | In Stock |
| Origin | Original Factory |
Product Overview
The AL422B-PBF is a high-speed 3M-bit video FIFO buffer from AverLogic, built with 384K × 8-bit memory array. It features fully asynchronous independent read/write ports to separate different clock domains, supporting up to 50 MHz (15 ns cycle). Packaged in lead-free 28-SOP, it works as frame/line buffer for surveillance cameras, video converters and MCU camera modules under 3.3V~5V power supply.
Core Advantages
True Asynchronous Dual-Port Operation
Separate read and write clock inputs, allowing data writing and reading at different frequencies without conflict.
Optimized Video Frame Capacity
3M-bit storage (384,000 bytes), perfectly matched for single-frame buffering of NTSC/PAL standard video signals.
Ultra-Low Latency and High Bandwidth
Max 50 MHz operating frequency, delivering stable real-time video buffering without frame loss.
Simplified Hardware Control Interface
No DRAM refresh or complex address logic, lowering MCU resource occupation and simplifying PCB layout.
Key Specifications
| Brand | AverLogic |
|---|---|
| Device Type | Synchronous FIFO Video Frame Buffer |
| RoHS Status | RoHS Compliant / Lead-Free (PBF) |
| EDA/CAD Model | Schematic symbols and 28-pin SOP landing pads are available upon request |
| Warranty | 1-Year Standard Quality Warranty |
| Package / Case | 28-SOP (300 mil width ,18.11mm × 8.38mm) |
| Pin Count | 28 Pins |
| Mounting Type | Surface Mount (SMT / SMD) |
| Surface Marking / Silkscreen | AL422B-PBF Marking |
| Memory Density | 3M-Bit (384K × 8-Bit configuration, Total 393,216 Bytes) |
| Maximum Clock Frequency | 50 MHz |
| Access Time | 15 ns Maximum Access Time |
| Data Bus Width | 8-Bit Parallel Input / 8-Bit Parallel Output |
| Control Pins | Write Enable (WE), Read Enable (RE), Write Reset (WRST), Read Reset (RRST), Output Enable (OE) |
| Supply Voltage (Vcc) | 3.3V Standard Operating, Tolerant to 4.5V~5.25V Input |
| Signal Tolerance | 5V Input Signal Tolerance under 3.3V Power Supply |
| Internal Structure | Integrated DRAM array with automatic address pointer control circuit |
| Operating Temperature Range | 0°C to +70°C (Commercial / Extended stability screening options available) |
Typical Applications
- Video format conversion pipelines (e.g., NTSC-to-PAL, Interlaced-to-Progressive scan converters)
- Digital CCTV security cameras, video recording buffers, and quad-split display monitors
- Microcontroller camera interfaces (e.g., buffering OV7670 camera module sensor outputs to slow MCUs)
- Digital frame grabbers, image processing acceleration cards, and video signal test equipment
- Time Base Correctors (TBC), digital mixers, and multimedia display matrix panels
Order & Shipping Info
| Minimum Order Quantity (MOQ) | 1 Piece |
|---|---|
| Shipping Time | Shipped within 1-2 business days |
| Delivery Time | 3-7 working days worldwide |
| Shipping Methods | DHL, UPS, FedEx, EMS |
| Payment Methods | T/T (Bank Transfer), PayPal, Credit Card, Western Union |
Technical Support
For datasheet, sample requests, stock check, or bulk pricing, please use the Quick Inquiry form. We will reply within 24 hours.
Frequently Asked Questions
Q1: What does PBF suffix mean for AL422B-PBF?
A: PBF means Pb-Free, fully RoHS compliant for lead-free SMT production.
Q2: Why match AL422B with OV7670 camera sensors?
A: It buffers fast pixel data from sensors, letting low-speed MCUs read full image frames stably.
Q3: How to reset AL422B-PBF internal memory pointers?
A: Pull WRST low to reset write pointer; pull RRST low to reset read pointer.
Q4: Can AL422B-PBF connect 3.3V and 5V circuits?
A: Yes, wide voltage tolerance works as level matching buffer for mixed 3.3V/5V systems.
Q5: What’s the maximum operating clock of AL422B-PBF?
A: Max 50MHz, with 15ns maximum access time.
Q6: Is sample order available for AL422B-PBF?
A: Yes, MOQ is 1 piece, small sample orders are supported.
Q7: What package does AL422B-PBF adopt?
A: 28-pin SOP surface mount package, size 18.11mm × 8.38mm.
Q8: Can I get schematic & PCB footprint files?
A: Submit inquiry form, we provide CAD symbols and landing pads for free.
Q9: What’s the warranty period for this chip?
A: 1-year standard quality warranty for all original parts.
Q10: What video devices use AL422B-PBF?
A: CCTV cameras, video format converters, frame grabbers and display matrix panels.
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