GENERAL DESCRIPTION

The ST16C2450 (2450) is a dual universal asynchronous receiver and transmitter (UART). The ST16C2450 is an improved version of the ST16C2450 with lower operating voltage and 5 volt tolerant inputs. The 2450 provides enhanced UART functions, a modem control interface and data rates up to 1.5 Mbps. Onboard status registers provide the user with error indications and operational status.

FEATURES

Added feature in devices with top marking A2 YYWW and newer:

■ 5 Volt Tolerant Inputs

• 2.97 to 5.5 Volt Operation

• Pin-to-pin compatible to Exar’s XR16C2450, ST16C2550, XR16L2550, XR16L2750 and XR16C2850

• 2 independent UART channels

■ 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 registers

■ Modem control signals (CTS#, RTS#, DSR#, DTR#, RI#, CD#)

■ Programmable character lengths (5, 6, 7, 8)

with even, odd, or no parity

• Crystal oscillator or external clock input

• TTL compatible inputs, outputs

• Industrial temperature ranges

• 48-TQFP and 44-PLCC packages

APPLICATIONS

• Portable Appliances

• Telecommunication Network Routers

• Ethernet Network Routers

• Cellular Data Devices

• Factory Automation and Process Controls