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.
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Telephones, telephone answering machines, cordless telephones
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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 = 580A) 2. IN1 OUT1 and IN2 OUT2 only are on3) Serial binary data input.4) Low voltage and current consumption.
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| Parameter |
Symbol |
Limits |
Unit |
| Power supply voltage |
VDD |
7 |
V |
| Input voltage |
VIN |
GND-0.3~VDD+0.3 |
V |
| Output voltage |
VOUT |
GND-0.3~VDD+0.3 |
V |
| Power dissipation |
Pd |
550 (BU8241F/BU8242F)*1 |
mW |
| 800 (BU8241FS) *2 |
| 500 (BU8244F) *3 |
| Operating temperature |
Topr |
-25~+75 |
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| Storage temperature |
Tstg |
-55~+125 |
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*1 Reduced by 5.5mW for each increase in Ta of 1 over 25.
*2 Reduced by 8mW for each increase in Ta of 1 over 25.
*3 Reduced by 5mW for each increase in Ta of 1 over 25.
Post a Buying Lead
Required Field 
