CD74HCT151MT

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

A logic-signal switch, multiplexer, or decoder is a device that passes an incoming signal from one or more inputs to one or more outputs based on certain logic or input conditions. In this article, we discuss the application field and working principle of CD74HCT151MT.

Application Field

CD74HCT151MT is a high-speed CMOS 16-channel multiplexer/demultiplexer. It is a high-speed device and it is similar to CD74HCT151MT, but it is specified to operate at lower voltage levels, down to 4.5V. The original 4.75V–5.25V operating range for TTL circuits and devices can still be met by CD74HCT132MT.

CD74HCT151MT is suitable for applications such as asynchronous memory timing, communication lines, processor–to–peripheral communication and logic control. It is also suitable for multiplexing data, address and control bits in microprocessor and computer systems.

Logic Schematics

CD74HCT151MT is a 16-channel multiplexer/demultiplexer consisted of 8 multiplexers. It can be used to select one of the 16 possible basic data channels. The selection of any individual device is accomplished by applying a four bit binary address to the address lines A, B, C, and D. The common active-low enable of the multiplexer (STROBE/E) must be enabled for the multiplexer to operate properly. When the enable input to the multiplexer is inactive, the common active-low output enable (OE) is enabled and all 16 of the output channels will be disabled.

Operation

CD74HCT151MT can be used to select one of 16 basic data channels provided by the device inputs I0 through I15. The selection of any individual device is accomplished by applying a 4-bit binary address (A, B, C, D) to the multiplexer. The multiplexer will then pass data present at its select input to its output. The device must be enabled (STROBE/E) before internal logic operations will be performed. When the device is not enabled, the common active-low output enable (OE) is enabled, forcing all 16 output channels to the inactive state.

CD74HCT151MT includes an active-low input override (OR) pin to facilitate testability. When this pin is enabled, each multiplexer output is forced to its inactive state, regardless of the active address lines or enable inputs. The OR pin functionality is provided to allow each channel of the multiplexer to be individually tested.

Conclusion

CD74HCT151MT is a high-speed CMOS 16-channel multiplexer/demultiplexer. It is suitable for applications such as asynchronous memory timing, communication lines, processor–to–peripheral communication and logic control. The selection of any individual device is accomplished by applying a four bit binary address to the address lines A, B, C, and D and the device must be enabled (STROBE/E) before internal logic operations will be performed.

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