HC4053 Datasheet – Multiplexers/Demultiplexers – Hitachi

Part Number : HC4053, HD74HC4053

Description : Triple 2-channel Analog Multiplexers/Demultiplexers

Manufactures : Hitachi Semiconductor

Pinouts :
HC4053 pinout

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

Block Diagram

HC4053 block diagram

HC4053 Datasheet


HY3843 Datasheet – PWM controller

Part Number : HY3843

Function : Fixed Frequency Current Mode PWM Controller.

Pakcage : DIP, SOP 8 Pin

Manufacturers : Hooyi Semiconductor

Pinouts :

HY3843 datasheet

Description :

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.


• Low Start-Up and Operating Current

• High Current Totem Pole Output

• Under voltage Lockout With Hysteresis

• Operating Frequency Up To 500KHz


Other data sheets within the file :

3843D-N, 3844D-N, 3845D-N, HY3842, HY3842D-N

HY3843 Datasheet PDF Download

HY3843 pdf