Description : Triple 2-channel Analog Multiplexers/Demultiplexers
Manufactures : Hitachi Semiconductor
HD74HC4053: This device contains 6 switches whose outputs are connected together in pairs, thus
implementing a triple 2 channel multiplexer, or the equivalent of 3 single-pole-double throw configuration.
Each of the A, B, or C select lines independently controls one pair of switches, selecting one of the two
switches to be “on”.
• High Speed Operation
• Wide Operating Voltage
• Low Quiescent Supply Current
Function : Fixed Frequency Current Mode PWM Controller.
Pakcage : DIP, SOP 8 Pin
Manufacturers : Hooyi Semiconductor
The HY3842D-N / 3843D-N / 3844D-N / 3845D-N, are fixed frequency current mode PWM controller. Theyare speciallydesigned for OFF−Line and DC to DC converter applications with a minimal externalcomponents. Internallyimplemented circuits include a trimmed oscillator for precise duty cycle control, a temperature compensated reference, high gain error amplifier, current sensing comparator, and a high current totem pole output ideally suited for driving a power MOSFET. Protection circuitry includes built under voltage lockout and current limiting.