74HC540DB,118 Allicdata Electronics
Allicdata Part #:

74HC540DB,118-ND

Manufacturer Part#:

74HC540DB,118

Price: $ 0.29
Product Category:

Integrated Circuits (ICs)

Manufacturer: Nexperia USA Inc.
Short Description: IC BUFFER INVERT 6V 20SSOP
More Detail: Buffer, Inverting 1 Element 8 Bit per Element 3-St...
DataSheet: 74HC540DB,118 datasheet74HC540DB,118 Datasheet/PDF
Quantity: 1000
1000 +: $ 0.26857
Stock 1000Can Ship Immediately
$ 0.29
Specifications
Series: 74HC
Packaging: Tape & Reel (TR) 
Part Status: Active
Logic Type: Buffer, Inverting
Number of Elements: 1
Number of Bits per Element: 8
Input Type: --
Output Type: 3-State
Current - Output High, Low: 7.8mA, 7.8mA
Voltage - Supply: 2 V ~ 6 V
Operating Temperature: -40°C ~ 125°C (TA)
Mounting Type: Surface Mount
Package / Case: 20-SSOP (0.209", 5.30mm Width)
Supplier Device Package: 20-SSOP
Base Part Number: 74HC540
Description

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This article focuses on the 74HC540DB,118 application field and working principle. It belongs to the logic family including buffers, drivers, receivers and transceivers.

1 The characteristics of buffers, drivers, receivers and transceivers

Logic components such as buffers, drivers, receivers and transceivers are electronic components that can control current flow. In general, they provide an open-collector or open-drain output, as well as a logic-level output. Commonly used in digital and logical circuits, these components are designed to manage and control current.

Buffers, Drivers, Receivers and Transceivers are used in commercial and industrial devices, embedded systems and consumer goods. These components are designed to ensure optimal operational performance in the application areas.

2 The 74HC540DB,118 application field and working principle

The 74HC540DB,118 is part of the family that includes buffers, drivers, receivers and transceivers. It is a 5-stage cascade shift register, which consists of 74HC540DB,118 with a voltage level ranging from 2.0V-6V. It can convert the serial input data into 8 bits of parallel output data.The circuit is designed to generate short duration pulses, with an absolute maximum rating of 22A. It has a maximum frequency of 80MHz and is suitable for applications where quick reaction times are required.The 74HC540DB,118 consists of 5 buffer stages. Each stage consists of a P-channel MOSFET, a logic buffer, and a delay line. The buffer stages are wired in cascade configuration, and each stage has a delay of 1–2ns. The logic buffer connection is a tristate connection. When the input logic is low, the output logic remains low at the same level as the input logic. When the input logic is high, the output logic has the same level as the input logic.The data flow in 74HC540DB,118 is described in the following equations.At the first stage, the first 8 bits of data are converted into 10-bits:

D0 -> D10
D1 -> D11
D2 -> D12
- - -
D7 -> D17

At the second stage, the 10-bit data from the previous stage is further converted into 20-bits.

D10 -> D20
D11 -> D21
D12 -> D22
- - -
D17 -> D27

At the third stage, the 20-bits are converted into 28-bits.

D20 -> D28
D21 -> D29
D22 -> D30
- - -
D27 -> D35

At the fourth stage, the 28-bits are further converted into 36-bits.

D28 -> D36
D29 -> D37
D30 -> D38
- - -
D35 -> D43

At the fifth stage, the 36-bits are converted into 44-bits.

D36 -> D44
D37 -> D45
D38 -> D46
- - -
D43 -> D51

The output of the 74HC540DB,118 is 44 bits of parallel data, which is the parallel output of 8 bits of serial input data.

3 Conclusion

In conclusion, the 74HC540DB,118 is a 5-stage cascade shift register, part of the logic family of buffers, drivers, receivers and transceivers. Its voltage level is ranging from 2.0V-6V. It is applicable for applications that need a quick reaction times, with a maximum frequency of 80MHz and maximum load of 22A. This shift register can convert serial input data into 8 bits of parallel output data.

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

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