ADM5180

a FEATURES Eight Differential Line Receivers in One Package Meets EIA Standard EIA-232E, 423A, 422A and CCITT V.10, V.11, V.28 Single +5 V Supply Differential Inputs Withstand ± 25 V Internal Hysteresis Low Power CMOS –3.5 mA Supply Current TTL/CMOS Compatible Outputs Available in 28-Pin DIP and PLCC Packages Low Power Replacement for UC5180C/NE5180 APPLICATIONS High Speed Communication Computer I-O Ports Peripherals High Speed Modems Printers Logic Level Translation Octal, RS-232/RS-423 Line Receiver ADM5180 FUNCTIONAL BLOCK DIAGRAM ADM5180 A– A A+ AO B– B B+ BO C– C C+ CO D– D D+ FS1 FS2 E– DO GENERAL DESCRIPTION The ADM5180 is an octal differential line receiver suitable for a wide range of digital communication systems with data rates up to 200 kB/s. Input signals conforming to EIA Standards 232-E, 422A and CCITT V.10, V.11, V.28, X.26, and X.27 are accepted and translated into TTL /CMOS output signal levels. The ADM5180 is a superior upgrade for the UC5180C and the NE5180. It is fabricated on an advanced BiCMOS process, allowing high speed bipolar circuitry to be combined with low power CMOS. This minimizes the power consumption to less than 25 mW. A failsafe function ensures a known output state under a variety of input fault conditions as defined in RS-422A and RS-423A. The failsafe function is controlled by FS1 and FS2. Each controls four receivers. With FS = Low and a fault condition the output is forced low while if FS = High, the output is forced high. The dev...