Clock Buffers, Drivers

This Product Selection Guide contains information to help select products in the Clock Buffers, Drivers category on

Products in the clock buffer & driver integrated circuit family are used to aid the dissemination of signals throughout a system, most commonly the frequency/time reference signals used to synchronize activity within the system. While the function most commonly performed is that of buffering, the replication of a signal from some source to isolate it from the influence of a driven load, some devices in the family perform additional functions such as selective rerouting of the buffered signals, division of signal frequency by some integer value, or translation of electrical signaling format used.


Type: Indicates the operational mode(s) of a featured IC, which has categorical significance for performance traits such as electrical efficiency.

Number of Circuits: Indicates the number of circuits of similar function that are implemented within the device.

Ratio - Input:Output: Indicates the number of signal inputs and outputs present in each functional circuit within a device.

Differential - Input:Output: Indicates if the clock signal inputs/outputs of a device employ or allow use of a differential signalling scheme.

Input: Enumerates the supported formats for clock/timing signals input to a device.

Output: Indicates the type of electrical signal the device provides, such as CMOS, crystal, or TTL.

Frequency - Max: Describes a device’s maximum operating frequency; the max rate at which an input power source is switched in the course of the conversion process.

Voltage - Supply: Typically represented by a range, this indicates the low and high voltage limits which one can expect standard operation. Voltages outside this range may damage the device and other system components.

Operating Temperature: Recommended operating temperature, typically given in a range or as a maximum. Exceeding these temperatures may affect performance or damage the device and other system components.

Mounting Type: Indicates how the device is attached.

Package / Case: Indicates the type of protective case used on an electronic component to allow easy handling, installation, and protection. This selection was determined to be the closest industry standard applicable to the suppliers device packaging. Typically it is best to check the actual dimensions from the datasheet rather than depend on this terminology when designing your circuit.

Supplier Device Package: This is what the manufacturer calls the package of this device. They are manufacturer specific. It is typically best to use the actual dimensions from the datasheets rather than to go by this terminology when designing your circuit.


64-TQFP Exposed Pad Fanout Buffer (Distribution), Multiplexer, Translator

DIGI-KEY PART # 576-2566-ND
MANUFACTURER Microchip Technology



Schematic symbol courtesy of Scheme-it. Please see their website for more information and symbols.


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Product Training Modules
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If you have any general questions on the specifications for selecting Clock Buffers, Drivers, please reply using the button below. If you have questions on specific Clock Buffers, Drivers please post those questions in the Integrated Circuits (ICs) category.