2:1 Broadband Digital Multiplexer / Selector

High speed broadband 2:1 Multiplexer/Selector (MUX)
Exhibits low jitter and limited temperature variation over industrial temperature range
Ideal for use as a high isolation selector switch or as a high speed 2-to-1 serializer
Ideal for high speed proof-of-concept prototyping
Fully differential CML input interface
Fully differential CML output interface with 600mV single-ended swing
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Frequency (min): DC
Frequency (max): 64 Gbps
Power: 415 mW
Package: 24-pin CQFP
Price: Request

Product Details


Fig. 1 Functional Block Diagram

The temperature stable and broadband ASNT5151-KMC SiGe IC can be utilized as either a high isolation selector switch or a high speed 2:1 serializer and is intended for use in high-speed measurement / test equipment. When employed as a selector switch, ASNT5151-KMC can route one of its differential data input signals d0p/d0n or d1p/d1n to its differential output qp/qn while effectively blocking the other data input. Selection of a specific data input is achieved through appropriate external DC biasing of the selector signal inputs cp/cn. As a 2:1 serializer, ASNT5151-KMC can receive high speed input data signals into d0p/d0n and d1p/d1n and effectively multiplex them into a double frequency rate NRZ output data signal to its differential output qp/qn by using a high speed input clock signal on its selector signal inputs cp/cn. The common-mode voltage levels of the input clock signals can be adjusted using the analog control inputs dcp/dcn.


The part’s I/Os support the CML logic interface with on chip 50Ω termination to vcc and may be used differentially, AC/DC coupled, single-ended, or in any combination. In the DC-coupling mode, the input signal’s common mode voltage should apply with the specifications shown within the electrical characteristics section within the part’s datasheet. In the AC-coupling mode, the input termination provides the required common mode voltage automatically. The differential DC signaling mode is recommended for optimal performance.