Cross point mixer
Communication ICs
Cross point mixer for telephones
BU8241F / BU8241FS / BU8242F / BU8244F
The BU8241F, BU8241FS, BU8242...
Description
Communication ICs
Cross point mixer for telephones
BU8241F / BU8241FS / BU8242F / BU8244F
The BU8241F, BU8241FS, BU8242F, and BU8244F are ICs developed for use with cordless telephones, and are equipped with switching and mixing functions. In addition, these ICs are provided with an internal power save function which enables the circuit to be run on line current if the power supply fails, by connecting a switch between the circuit and a new handset, reducing line current consumption. A series of these ICs is also under development, based on the number of circuits.
FApplications Telephones, telephone answering machines, cordless telephones
FFeatures 1) Eight input signals are selected and mixed by a cross-point, and output to eight pins (BU8241F / BU8241FS). 2) A power save mode enables the circuit to run on line current if the power supply fails. 1. Line current consumption reduced (IDD2 = 580µA) 2. IN1 ! OUT1 and IN2 ! OUT2 only are on
3) Serial binary data input. 4) Low voltage and current consumption.
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Communication ICs
FBlock diagram
BU8241F / BU8241FS / BU8242F / BU8244F
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Communication ICs
BU8241F / BU8241FS / BU8242F / BU8244F
FAbsolute maximum ratings (Ta = 25_C)
FRecommended operating range (Ta = 25_C)
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Communication ICs
BU8241F / BU8241FS / BU8242F / BU8244F
FElectrical characteristics (unless otherwise noted, Ta = 25_C, VDD = 5V)
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Communication ICs
FPin descriptions
BU8241F / BU8241FS / BU8242F / BU8244F
FInput / output circuits
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