XR16L2552 - Exar Corporation

XR16L2552 2.25V TO 5.5V DUART

The XR16L2552 (L2552) is a dual universal asynchronous receiver and transmitter (UART) with 5 volt tolerant inputs. The XR16L2552 is an improved version of the ST16C2552 UART with lower operating voltages and 5 volt tolerant inputs. The L2552 provides enhanced UART functions with 16 byte TX and RX FIFOs, automatic hardware (RTS/CTS) and software (Xon/Xoff) f.

Features

• 2.25 to 5.5 Volt Operation
• 5 Volt Tolerant Inputs
• Pin-to-pin and functionally compatible to National PC16552
• Pin-to-pin Compatible to Exar’s ST16C2552, XR16L2752 and XR16C2852 in the 44-PLCC
• 2 Independent UART Channels
■
■
■
■
■
■
■
■
■
■
■ APPLICATIONS
• Portable Appliances
• Telecommunication Network Routers
• Ethernet Network Routers
• Cellular Data Devices
• Factory Automation and Process Controls FIGURE 1. XR16L2552 BLOCK DIAGRAM Up to 3.125Mbps with external clock of 50 MHz Register Set Compatible to 16C550 16 byte Transmit FIFO to reduce the bandwidth requirement of the .