Keyboard Controller with PS/2

General Description The HT6542B is a keyboard controller developed by Holtek with a 4-bit microprocessor. It is pin-to-pin compatible with Intel 8042 keyboard controller used in IBM PC’s. PC manufacturers need not modify any printed wiring layout when using the HT6542B in lieu of the Intel 8042 b

Keyboard Controller with PS/2

Recifier Diode

FEATURES ■Double Side Cooling ■High Surge Capability APPLICATIONS ■Rectification ■Freewheel Diode ■DC Motor Control ■Power Supplies ■Welding ■Battery Chargers

Silicon NPN epitaxial planer transistor

Silicon NPN epitaxial planer transistor For high frequency amplification, oscillation, and mixing (Tr1), For medium-frequency amplification (Tr2) ■ Features ● Two elements incorporated into one package. ● Reduction of the mounting area and assembly cost by one half.

Push-Pull Output Sub-Microamp Comparators

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Dual N- and P-Channel 20-V (D-S) MOSFET

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