TL16C750FN – 3.3V/5V Single UART with 64-Byte FIFOs and Auto-Flow Control SMD IC

TL16C750FN – 3.3V/5V Single UART with 64-Byte FIFOs and Auto-Flow Control SMD IC

The TL16C750FN is an Asynchronous Communications Element (ACE), commonly known as a UART, which serves as a crucial interface between a parallel data bus and a serial communication channel. It performs serial-to-parallel conversion on data received from peripheral devices and parallel-to-serial conversion on data transmitted from its central processing unit (CPU). This device is a functional upgrade of earlier models, maintaining full software compatibility while introducing advanced features to reduce CPU overhead and enhance data integrity in serial communication systems.

A key advancement of the TL16C750FN is its integrated buffering system. It incorporates 64-byte FIFOs (First-In, First-Out) for both the receiver and transmitter sections. These FIFOs temporarily store data, allowing the CPU to handle data in blocks rather than on a character-by-character basis. This buffering significantly reduces the number of interrupts the CPU must service, thereby lowering software overhead and increasing overall system efficiency and performance in data-intensive applications.

To further optimize data flow and prevent data loss, the TL16C750FN features a programmable auto-flow control mechanism. This system is composed of auto-RTS (Request To Send) and auto-CTS (Clear To Send). Auto-RTS automatically desserts the RTS signal when the receiver FIFO is nearing capacity, signaling the transmitting device to pause. Conversely, auto-CTS halts the transmitter if the CTS signal is inactive, indicating the receiving device is not ready. This hardware-managed handshake eliminates overrun errors without CPU intervention.

Features:

• Pin-to-Pin Compatible With the Existing TL16C550B/C.
• Programmable 16- or 64-Byte FIFOs to Reduce CPU Interrupts.
• Programmable Auto-RTS and Auto-CTS.
• Capable of Running With All Existing TL16C450 Software.
• Up to 16-MHz Clock Rate for Up to 1-Mbaud Operation.
• Programmable Baud Rate Generator Allows Division of Any Input Reference Clock by 1 to (2¹⁶ – 1).
• 5-V and 3-V Operation.
• Register Selectable Sleep Mode and Low-Power Mode.
• Fully Programmable Serial Interface Characteristics (Data Bits, Parity, Stop Bits).
• Internal Diagnostic Capabilities (Loopback Controls).
• Modem Control Functions (CTS, RTS, DSR, DTR, RI, and DCD).

Specifications:

Pinout Diagram:

Footprint Diagram:

Applications:

• Embedded Systems.
• Industrial Automation and Control.
• Data Acquisition Systems.
• Networking Equipment (Routers, Switches).
• Point-of-Sale (POS) Terminals.
• Medical Instrumentation.

Package Contents:

• 1x TL16C750FN – 3.3V/5V Single UART with 64-Byte FIFOs and Auto-Flow Control SMD IC

Datasheet