SP1404BW

The SP1404 operates as a power amplifier interfacing from a voltage-level sensitive input to a high-current output switch.The input threshold is TTL compatible, with a low input current requirement enabling one standard TTL output to drive many interfaces. The low input current requirement also makes it possible to use series current-limiting resistors to protect the SP1404 inputs.

Each element of the SP1404BW device performs as inverting function,i.e. a low voltage level on the input causes a high current in the output. If the input is left open-circuit, the output will be off and the output current will be zero.

The isolation of the integrated circuit SP1404BW is biased to the more negative of the two earth points by diodes D1 and D2 so that differences of up to (V_CC- 1) volts can be tolerated between the'noisy' exchange earth and the 'quiet' electronic earth.