CD40257BPWG4

Series:	4000B
Packaging:	Tube
Part Status:	Obsolete
Type:	Multiplexer
Circuit:	4 x 1:2
Independent Circuits:	1
Current - Output High, Low:	6.8mA, 6.8mA
Voltage Supply Source:	Dual Supply
Voltage - Supply:	3 V ~ 18 V
Operating Temperature:	-55°C ~ 125°C
Mounting Type:	Surface Mount
Package / Case:	16-TSSOP (0.173", 4.40mm Width)
Supplier Device Package:	16-TSSOP
Base Part Number:	40257

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CD40257BPWG4 is a logic chip manufactured by Texas Instruments Incorporated. This chip is a multi-function logic device that serves several different applications and comes in eight different package configurations. The CD40257BPWG4 is a quad single-pole double-throw, two-input multiplexer. It is a four-channel selection device that allows the user to select one of four possible states provided by two digital inputs.The CD40257BPWG4 is typically used as a multiplexer and demultiplexer. In a multiplexer application, the chip can be used to control or switch between two or more logic signals or inputs at a time, allowing for signal multiplexing or higher frequency switching. This can be done by selecting one of the four possible logic states off of the two digital inputs. The chip can also be used as a demultiplexer, which is the opposite of a multiplexer. A demultiplexer will take one signal and then split it into multiple, different signals. In terms of its working principle, the CD40257BPWG4 is a CMOS, or complementary metal-oxide semiconductor, device. It uses an inverted logic technology to operate, meaning that the output is inversely proportional to the input. This chip also has built-in hysteresis which eliminates the need for separate wave shaping components.The CD40257BPWG4 chip is used in a variety of applications, most typically in multiplexing, digital signal processing, waveform analysis, and test instrumentation. The speed and versatility of the device make it useful in applications such as industrial and automotive instrumentation, audio and video equipment and processing, and even computer peripheral devices. The CD40257BPWG4 can also be used in combination with other components in complex functional systems like selector switches, logic switches, and mode converters. It is also used as part of a differential amplifier, where it serves as an input switched gain control. The chip is also highly reliable and can handle up to 20 volts in both the ON and OFF states. In summary, the CD40257BPWG4 is an excellent choice for multiplexing, digital signal processing, waveform analysis, and test instrumentation applications due to its versatility and speed. It has a wide range of uses, from communications and network systems to instrumentation and automotive systems. Thanks to its robust CMOS technology, the chip can handle up to twenty volts in both the ON and OFF states and is highly reliable.

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