SN74LVC1G17DCKR Integrated Circuits (ICs)

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The SN74LVC1G17DCKR is a single non-inverting buffer/driver with 3-state output from Texas Instruments featuring low power consumption. It has been designed to drive both low and high capacitance loads. It is specifically designed to meet the needs of various applications such as memory-decoding, level-shifting, clock distribution, and fan-out buffers. The SN74LVC1G17DCKR itself is classified as a logic device, more specifically within that logic field belonging to buffers, drivers, receivers, and transceivers.

Application Field

The SN74LVC1G17DCKR is a single non-inverting buffer/driver with a 3-state output. It is focused in applications such as memory-decoding, level-shifting, clock distribution, and fan-out buffers. Due its 3-state output feature, it has been used in designs for display applications. The configuration of this Buffer/Driver pin- for-pin compatible with the AC/ACT family of products which makes it particularly useful as a line or bus driver for low, medium, or high capacitance loads. The 3-state output of the SN74LVC1G17DCKR makes it particularly useful for driving displays. It works in a similar way to an open-drain type device, where a logic high will power the active-low 3-state output, but will not be present in the visible output. So while the device’s output will be determined by the logic state on the data input, the visible output will remain determined by the active-low output enable line. As it is also compatible with the AC/ACT family of products, this buffer/driver has been used in various system-level memory decoding designs, and makes a great fit for microprocessors, ASICs, per logic, and data-bus applications.

Working Principle

The SN74LVC1G17DCKR takes an input signal and either amplifies or buffers it according to the required application at hand. This amplifier/buffer acts as an interface between a pair of circuits or components and follows the working principle of the Non-Inverting Buffer. A Non-Inverting Buffer (sometimes referred to as a voltage follower) is a circuit that takes the input signal and amplifies it so that the output of the buffer (at its output node) is identical to the input signal at its input node. Essentially the SN74LVC1G17DCKR acts as a signal amplifier, as well as an isolation device- as it takes the signal at its input node, amplifies it, and then sends it to its output node, with the signal being kept from interfering or being interfered from the other signal nodes. It is an open-drain, three-state device that is used in applications with fast switching, low power consumption, and low output propagation times.

Signal Control

The SN74LVC1G17DCKR works in conjunction with two active signals; the data signal (D) and the output enable signal (OE). Depending on the state of the output enable signal, the buffer/driver can be put in one of three states; normal mode (enabled), high impedance (disabled), or in ‘power on’ state (disabled). The active-high output enable signal (OE) provides the ability to control the output of the buffer/driver, with the logic state of OE corresponding to the state of the output. When the output enable signal (OE) is in an active-high state, the buffer/driver enables the output; when the output enable signal (OE) is in an active-low state, the buffer/driver goes into a high-impedance state and the output is disabled. In addition, the active-low data signal (D) determines the output of the driver in normal mode (when the OE is active-high). When the D signal is at a logic high, the output of the buffer/driver is at a logic high, and when the D signal is at a logic low, the output of the buffer/driver is at a logic low. The SN74LVC1G17DCKR pins themselves matches the AC/ACT family of devices, so it can be used in place of them.

Conclusion

The SN74LVC1G17DCKR is a single non-inverting buffer/driver with 3-state output. It can be used for low, medium and high capacitance loads. It is used for applications such as memory-decoding, level-shifting, clock distribution, and fan-out buffers. It is also pin-for-pin compatible with the AC/ACT family of products, allowing easy integration into existing designs. With its active-high output enable signal, it can also be used to create a system-level memory decoding design. The SN74LVC1G17DCKR works in conjunction with two active signals, the data signal (D) and the output enable signal (OE), and is classified as a logic device fitting itself within the field of logic buffers, drivers, receivers, and transceivers.

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