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ST16C554DIQ64-F
ST16C554DIQ64-F
| Part Number | ST16C554DIQ64-F |
|---|---|
| Manufacturer | MaxLinear / Exar |
| Category | Integrated Circuits (ICs) > Interface – UARTs (Universal Asynchronous Receiver Transmitter) |
| Description | High-performance, Quad Universal Asynchronous Receiver and Transmitter (UART) featuring independent 16-byte FIFO buffers, integrated full modem control signaling, and Intel data bus interface for multi-channel serial installations. |
| Stock Status | In Stock |
| Origin | Original Factory |
Product Overview
The ST16C554DIQ64-F is a high-performance quad-channel UART IC from MaxLinear (Exar) for high-density multi-channel serial communication. It integrates four independent enhanced UART channels with dedicated programmable baud rate generators and full modem control signals (CTS#, RTS#, DSR#, DTR#, CD#, RI#). Per-channel 16-byte transmit/receive FIFOs reduce CPU load and avoid data overflow. The 64-pin TQFP variant only supports Intel bus interface, directly compatible with mainstream MCUs without extra external logic. Housed in a compact 10mm × 10mm TQFP-64 SMD package, it delivers stable long-running serial transmission for multi-port serial adapters, industrial gateways and data acquisition systems.
Core Advantages
Four Independent Full-Duplex Channels
Integrates four complete UART channels on a single silicon die, reducing PCB layout area and simplifying routing compared to deploying multiple single-channel UART devices separately.
Integrated 16-Byte Hardware FIFOs
Each channel has dedicated 16-byte transmit and receive FIFO storage, buffering burst serial data to lower CPU interrupt frequency and avoid data packet loss.
Optimized Intel Host Bus Interface
This 64-pin package version adopts fixed Intel bus control logic, compatible with most mainstream embedded microprocessors to simplify hardware design of industrial serial communication boards.
Complete Modem Control Signaling
Full hardware modem handshake signals are available on every channel, supporting seamless connection with RS-232/RS-485 transceivers, cellular modules and automated industrial fieldbus systems.
Key Specifications
| Brand | MaxLinear / Exar |
|---|---|
| RoHS Status | RoHS Compliant / Lead-Free Standard (Green Material Matrix) |
| EDA/CAD Model | 3D Model & PCB Footprint Available upon request |
| Warranty | 1-Year Standard Factory Warranty |
| Package / Case | TQFP-64 (10mm x 10mm) |
| Package Pin Count | 64 Pins |
| Mounting Type | Surface Mount Technology (SMD/SMT) |
| Surface Marking / Silkscreen | ST16C554DIQ Marking |
| Number of Channels | 4 Independent UART Channels (Quad Configuration) |
| FIFO Buffer Depth | 16 Bytes of Transmit FIFO and 16 Bytes of Receive FIFO per channel |
| Maximum Data Rate | Up to 1.5 Mbps at 5V operating conditions |
| Interface Standard | RS-232 Compatible UART |
| Data Bits Configuration | Programmable 5, 6, 7, 8 data bits |
| Parity Control | Odd, Even, No Parity selectable |
| Stop Bit Mode | 1 or 2 stop bits configurable |
| Operating Voltage Supply | +2.97V to +5.5V Multi-Voltage Architecture Compatibility |
| Host Interface Mode | Fixed Intel Microprocessor Bus Layout (Motorola mode only available on 68-pin PLCC variant) |
| Modem Hardware Control | Full modem handshaking signals (TX, RX, RTS, CTS, DTR, DSR, CD, RI) across all channels |
| Interrupt Function | Independent interrupt signal generation per channel |
| Internal Clock Support | Programmable Baud Rate Generator with Crystal Oscillator inputs or External Clock Line Feeds |
| Operating Temperature Range | -40°C to +85°C (Industrial System Reliability Grade Envelope) |
Typical Applications
- Multi-Port Serial Communication Boards, Edge-Computing Gateways, and Industrial Router Expansion Hubs
- Factory Automation Control Systems, Programmable Logic Controllers (PLCs), and SCADA Communication Links
- Point-of-Sale (POS) Terminal Stations, Multi-Channel Barcode Scanning Systems, and Retail Ticket Printers
- Remote Telemetry Data Accumulators, Environmental Monitoring Enclosures, and Security Access Panels
- Embedded Networking Infrastructure Equipment, Telecom System Concentrators, and Diagnostic Hardware Platforms
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: Is your currently available stock of the ST16C554DIQ64-F component fully genuine and original?
A: Yes, we guarantee that all ST16C554DIQ64-F UART chips in our stock are 100% brand-new, factory-original products from MaxLinear (Exar). They are kept inside climate-regulated facilities and handled strictly following standard anti-static ESD safety measures.
Q2: What is the main structural benefit of the “D” indicator inside the part number (ST16C554D)?
A: The “D” variant represents an enhanced revision with upgraded internal register architecture. Motorola bus switching pin is only present on the 68-pin PLCC version; the 64-pin TQFP ST16C554DIQ64-F permanently uses Intel bus mode without hardware selection pin.
Q3: Can the four individual channels run at different baud rates simultaneously?
A: Yes, every channel features its own fully isolated, programmable baud rate generator and configuration register set. This allows you to communicate with four separate peripheral devices at completely different transmission speeds at the same time.
Q4: How can our technical division request register mapping sheets, hardware evaluation footprint files, or bulk volume pricing tiers?
A: Please complete our Quick Inquiry web form on this page with details about your processing parameters. Our application support desk will process your inquiry and dispatch the available technical documentation package within 24 hours.
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