BU8307CS Rohm Semiconductor, BU8307CS Datasheet
BU8307CS
Specifications of BU8307CS
Related parts for BU8307CS
BU8307CS Summary of contents
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... Pulse / tone dialer for telephone set BU8307CS / BU8307CF The BU8307CS and BU8307CF are large scale integrated circuits with a pulse dialer and tone dialer integrated on a single chip. These products are capable of dialing in either pulse or tone mode, and can redial digits. FApplications ...
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... Communication ICs FAbsolute maximum ratings (Ta = 25_C) FRecommended operating conditions (Ta = 25_C) 164 BU8307CS / BU8307CF ...
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... Communication ICs FElectrical characteristics (unless otherwise noted 25_C, V BU8307CS / BU8307CF = 3.0V) DD 165 ...
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... Communication ICs FElectrical AC characteristics (unless otherwise noted 25_C, V 166 BU8307CS / BU8307CF = 3.0V) DD ...
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... Communication ICs FElectrical characteristic curves BU8307CS / BU8307CF 167 ...
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... Communication ICs FMeasurement circuit 168 BU8307CS / BU8307CF ...
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... This is used to switch from pulse mode to tone mode. It also serves as a “break pause” key when redialing. R This is used in both redial and inhibit redial op- erations. When redialing, it also serves as a “break pause” key. H Pressing this key initiates on-hook operation. key switches the unit BU8307CS / BU8307CF 169 ...
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... The hooking operation is not written to the memory. While the hooking operation is in prog- ress, the only key input which is not accepted is the key. All other key input is accepted. BU8307CS / BU8307CF ) (MODEIN = i key writes the data required ) key while the dial ...
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... Communication ICs FCircuit operation BU8307CS / BU8307CF 171 ...
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... Communication ICs 172 BU8307CS / BU8307CF ...
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... Communication ICs BU8307CS / BU8307CF 173 ...
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... CST3.58MGWU300AB) is con- nected between OSCIN and OSCOUT. If CSA3.58 MGU300AB is connected, a CH-type 30 pF capacitor should be connected between each of these pins and V 174 BU8307CS / BU8307CF (7) KEYTONE This is the pin which outputs keytones. It has a CMOS 4 output. When off-hook, this pin outputs a key-press con- ...
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... Communication ICs BU8307CS / BU8307CF 175 ...
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... Communication ICs 176 BU8307CS / BU8307CF ...
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... To avoid problems, we recommend ad- ding a circuit to the HS pin, as shown in the diagram be- low. (There is no need for this circuit, however, if the HS pin momentarily goes HIGH by some other means, for example, by CPU control.) FApplication example BU8307CS / BU8307CF 177 ...
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... Communication ICs FAttached components 178 BU8307CS / BU8307CF ...
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... Communication ICs FExternal dimensions (Units: mm) BU8307CS / BU8307CF 179 ...