74HC257PW,118

Series:	74HC
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Multiplexer
Circuit:	4 x 2:1
Independent Circuits:	1
Current - Output High, Low:	7.8mA, 7.8mA
Voltage Supply Source:	Single Supply
Voltage - Supply:	2 V ~ 6 V
Operating Temperature:	-40°C ~ 125°C
Mounting Type:	Surface Mount
Package / Case:	16-TSSOP (0.173", 4.40mm Width)
Supplier Device Package:	16-TSSOP
Base Part Number:	74HC257

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Introduction

74HC257PW is a CMOS logic device designed to integrate multiple logic functions. Rated to be four to five times faster than LS equivalent, this device is typically used in high speed logic circuits due to its fast switching performance. The 74HC257PW is a four input, non-inverting multiplexer. Its typical applications include signal switching, bit manipulation, and memory decoding. Additionally, its extremely low-power dissipation and CMOS process compatibility makes it suitable for use in battery-powered applications.

Application Field

74HC257PW is typically used in multiplexer mediated signal switching applications such as fast, low-power multiplexer circuits. Its multiplexer capability makes it an ideal solution for applications that require the switching of multiple signals over a short timeframe. Furthermore, the device is capable of reducing static power significantly when compared to conventional logic-based multiplexers.The 74HC257PW is also commonly used in applications that requires complex bit manipulation such as data entry and data storage management. As the device supports logic levels from standard to low-power and even extended voltages, it is suitable for use in a wide range of applications.The device\'s multiplexer function is also particularly advantageous for memory decoding applications such as dynamic RAM decoding and decoder circuit expansions. With the device\'s flexibility and high speed, it is easily integrated in existing design architectures.

Working Principle

The 74HC257PW is a two-channel, non-inverting multiplexer with 4 logic inputs and two select inputs. By accessing either of the two data channels, the multiplexer is capable of selecting any one of four logic inputs to be driven by the output. Selection of the input is determined by the logic value at the two select inputs (A1, A0) which when pulled low accesses a specified input.For example, when input A1, A0 are both pulled low, the output channel S0 will be driven by input D0. Conversely, when A1 and A0 are both pulled low, the output channel S1 will respond to input D1. When input A1 is high and A0 is low, the output will be driven by input D2 and when both inputs A1 and A0 are high, the output channels will be driven by input D3.Using the active low configuration of the select lines, this device can be used to switch between multiple logic signals or can be used as a conventional decoder to decode the input signals of an ROM. Additionally, the device can also be configured to act as an address translator or a signal selecter in a complex processing network.

Conclusion

The 74HC257PW is an excellent device for signal switching, bit manipulation, and memory decoding applications. Its low-power consumption and fast switching speeds make it suitable for low-power and high-speed architectures. Additionally, its flexibility and capability of responding to multiple logic signals make it an ideal solution for complex bit manipulation. Moreover, its active low configuration of select signals enhances its ability to be configured as a decoder in ROMs and address translators in complex processing networks.

The specific data is subject to PDF, and the above content is for reference

Part Number	Manufacturer	Price	Quantity	Description