74LCX841MSAX

Series:	74LCX
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Logic Type:	D-Type Transparent Latch
Circuit:	10:10
Output Type:	Tri-State
Voltage - Supply:	2 V ~ 3.6 V
Independent Circuits:	1
Delay Time - Propagation:	1.5ns
Current - Output High, Low:	24mA, 24mA
Operating Temperature:	-40°C ~ 85°C
Mounting Type:	Surface Mount
Package / Case:	24-SSOP (0.209", 5.30mm Width)
Supplier Device Package:	24-SSOP
Base Part Number:	74LCX841

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Introduction

The 74LCX841MSAX is a static CMOS 8-bit latch designed to store data and control signals. Latches are logic level sensitive devices, typically used to control ports or enable data transfer. They also can be used for logic level stretching and driving feature in embedded applications. This device can be used for general purpose data storage and for controlling access ports and for data bus multiplexers. They are suitable for any application where latching control of data or control signals is required.

Application field

The 74LCX841MSAX is used for data storage and control port latching in applications such as industrial automation, medical instrumentation, automotive, and home automation systems. The 8-bit latching device can be used to control ports, enable data transfer, and drive data bus multiplexers. It is also used in communication systems, digital television, and security systems.The latch can be used in photo-sensitive cells, tilt detectors, temperature and pressure sensors, laser measurement detectors, and infrared sensors. It can also be used in low power circuits, remote controls, sensors, and digital audio and video devices.

Working Principle

The 74LCX841MSAX latch is a static CMOS full-duplex process device which allows data in the form of multibit or single-bit parallel data transfers to be latched and stored. The device itself is composed of four 8-bit latches.The 74LCX841MSAX is composed of two 8-bit latches, each with a dedicated Gated D-Latch and D Flip-Flop. The 8-bit latch provides simultaneous data transfer for 8 lines of data in the form of 8-bit words.The Gated D Latch and D Flip-Flop each have an input that can be used to provide either active-low or active-high data, allowing them to be used in a variety of applications. Additionally, the device contains an Enable signal which also allows for the latching of data.The 8-bit latch features a dual-rail static latch structure with complementary output signals (Q/Q*), which allows for one-hot data handling. When the Enable signal is asserted, the device latches the current data present on the D inputs, and will store the data until the next active edge. When the Enable signal is de-asserted, the current data present on the D inputs will not be latched and the previous data state will remain.

Conclusion

The 74LCX841MSAX static CMOS 8-bit latch is a useful device in applications where latching control of data or control signals is required. It can be used to control ports and enable data transfer, and drive data bus multiplexers. It is also used in low power circuits, remote controls, sensors, and digital audio and video devices. The device consists of two 8-bit latches, each with a dedicated Gated D-Latch and D Flip-Flop, and an Enable signal. The 8-bit latch provides simultaneous data transfer for 8 lines of data in the form of 8-bit words, and the dual-rail static latch structure with complimentary output signals (Q/Q*) allows for one-hot data handling.

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