XR16L2450 - Exar Corporation

XR16L2450 2.25V TO 5.5V DUART

The XR16L2450 (L2450) is a dual universal asynchronous receiver and transmitter (UART). The XR16L2450 is an improved version of the ST16C2450 with lower operating voltage and 5 volt tolerant inputs. The L2450 provides enhanced UART functions, a modem control interface and data rates up to 1.5 Mbps. Onboard status registers provide the user with error indicat.

Features

• 2.25 to 5.5 Volt Operation
• 5 Volt Tolerant Inputs
• Pin-to-pin compatible to Exar’s ST16C2450, ST16C2550, XR16C2850 TQFP package XR16L2550, XR16L2750 and
• Pin-to-pin compatible to TI’s TL16C752B on the 48
• 2 independent UART channels
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• Portable Appliances
• Telecommunication Network Routers
• Ethernet Network Routers
• Cellular Data Devices
• Factory Automation and Process Controls FIGURE 1. XR16L2450 BLOCK DIAGRAM Up to 1.5 Mbps data rate with a 24 MHz crystal oscillator or external clock frequency 1 byte Transmit FIFO 1 byte Receive FIFO with error tags Status report reg.