
Allicdata Part #: | 296-33107-5-ND |
Manufacturer Part#: |
CD74HC540M |
Price: | $ 0.64 |
Product Category: | Integrated Circuits (ICs) |
Manufacturer: | Texas Instruments |
Short Description: | IC BUFFER INVERT 6V 20SOIC |
More Detail: | Buffer, Inverting 1 Element 8 Bit per Element 3-St... |
DataSheet: | ![]() |
Quantity: | 583 |
1 +: | $ 0.58590 |
10 +: | $ 0.51534 |
100 +: | $ 0.39526 |
500 +: | $ 0.31248 |
1000 +: | $ 0.24998 |
Series: | 74HC |
Packaging: | Tube |
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: | -55°C ~ 125°C (TA) |
Mounting Type: | Surface Mount |
Package / Case: | 20-SOIC (0.295", 7.50mm Width) |
Supplier Device Package: | 20-SOIC |
Base Part Number: | 74HC540 |
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CD74HC540M is a 5V tolerant 8-bit high-speed parallel-to-serial converter with non-inverting 3-state output logic. It belongs to the logic buffer, driver, receiver, transceiver family and has a wide range of applications in different fields. This article will discuss the application field and working principle of the CD74HC540M.
Application Field of CD74HC540M
CD74HC540M can be used in computers, servers and storage systems such as RAIDs (Redundant Array of Inexpensive Disks) where high data rates and high performance are required. It can also be used in processors and memories for fast data manipulation. In addition, CD74HC540M can be used in communication systems such as spread spectrum systems, cell phones, ADSL/VDSL, etc. In consumer electronics, CD74HC540M is used in set-top boxes, digital cameras, MP3 players and other products.
In automotive applications, CD74HC540M can be used for in-vehicle entertainment systems, engine control systems, and safety systems. Moreover, it can be used in medical instruments such as patient monitors, CT scanners, and X-ray machines. CD74HC540M can also be used in industrial equipment such as factory automation, railway signaling, and robotics.
Working Principle of CD74HC540M
CD74HC540M is an 8-bit, high-speed, parallel-to-serial conversion device. It is operated with a supply voltage of 2 to 5.5V and has a maximum frequency of 20 MHz in 3.3V supply and 30 MHz in 5V supply. The clock-to-output propagation delay is typically 15 ns (max).
CD74HC540M is a fully synchronous device; each bit starts shifting at the rising edge of the clock pulse. The 8 parallel data (D0 through D7) is converted to serial data at the Q serial output pin. The inputs have D-type flip flop to latch the data on the rising edge of the clock and a 3-state outputs with non-inverting logic. The device has an asynchronous active low reset and an active high enable input.
CD74HC540M has an 8-bit wide parallel data with 8 latched outputs that can accept 3.3V and 5V logic levels. The serial output is implemented with a 3-state buffer which allows the user to connect multiple devices to the same data lines. The device has an active low reset input to reset the 8 bits of data and an active high enable input to start the data shifting process. Additionally, the device has an active low direct enable, which allows the device to be directly connected to the other logic devices without the need for lots of buffering and logic gates.
CD74HC540M also has an active low output-enable/load enable that can be used to enable/disable the outputs. This feature allows the user to selectively inhibit some of the outputs if required. This feature can be used to limit the amount of current used in the 3-state outputs.
Overall, CD74HC540M is an 8-bit, high-speed, non-inverting 3-state parallel-to-serial converter with wide applications in different fields. It has an active low reset, an active high enable, 8-bit parallel data, a 3-state serial output and an active low direct enable and output-enable/load enable.
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