The LT1491A is a high speed, low-power, low-voltage differential line driver from Analog Devices. It is capable of operating over a wide voltage range of 3.2 to 20V and provides data rates up to 400 megabits/sec. The LT1491A is ideally suited for applications such as RS232, RS422, RS485 and EIA/TIA-422, which require high data rates. The LT1491A features internal protective circuitry that helps protect against typical overloads and misapplication of the device. Additionally, the device features a low offset and drift, allowing for reliable operation in varying temperature environments. The LT1491A is available in 8-lead PDIP, 8-lead SOIC or 8-lead TSSOP packages for easy integration into applications.