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UPD4721

RS-232 LINE DRIVER/RECEIVER AT 3.3 V/5 V

SEMICONDUCTORSELECTIONGUIDE Microcomputer ICMemory Semi-CustomIC ParticularPurposeIC GeneralPurposeLinearIC Transistor/Diode/Thyristor MicrowaveDevice/ConsumerUseHighFrequencyDevice OpticalDevice Packages Index(QuickReferencebyTypeN

UPD4721

MOS INTEGRATED CIRCUIT

FEATURES ?ConformstoEIA/TIA-232-E(formername,RS-232C)standards ?Selectable+3.3V/+5Vsinglepowersupply(selectedbyVCHApin) ?Bysettingthestandbypintoalowlevel(standbymode),circuitcurrentcanbereduced.Atsuchtimes, thedriveroutputisinahigh-impedancestate.

UPD4721

RS-232 LINE DRIVER/RECEIVER AT 3.3 V/5 V; ? Conforms to EIA/TIA-232-E (former name, RS-232C) standards\n? Selectable +3.3 V/+5 V single power supply (selected by VCHA pin)\n? By setting the standby pin to a low level (standby mode), circuit current can be reduced. At such times, the driver output is in a high-impedance state.?;

The μPD4721 is a high-breakdown voltage silicon gate CMOS line driver/receiver based on the EIA/TIA-232-E standard. The internal DC/DC converter can switch between multiple voltages, realizing the allowing it to operate with a single +3.3 V or +5 V power supply. It also provides standby function.\nThis IC incorporates 2 driver circuits and 2 receiver circuits. An RS-232 interface circuit can be easily configured by connecting 5 capacitors externally.FEATURES\n? Conforms to EIA/TIA-232-E (former name, RS-232C) standards\n? Selectable +3.3 V/+5 V single power supply (selected by VCHA pin)\n? By setting the standby pin to a low level (standby mode), circuit current can be reduced. At such times, the driver output is in a high-impedance state.

UPD4721GS-GJG

RS-232 LINE DRIVER/RECEIVER AT 3.3 V/5 V

SEMICONDUCTORSELECTIONGUIDE Microcomputer ICMemory Semi-CustomIC ParticularPurposeIC GeneralPurposeLinearIC Transistor/Diode/Thyristor MicrowaveDevice/ConsumerUseHighFrequencyDevice OpticalDevice Packages Index(QuickReferencebyTypeN

UPD4721GS-GJG

MOS INTEGRATED CIRCUIT

FEATURES ?ConformstoEIA/TIA-232-E(formername,RS-232C)standards ?Selectable+3.3V/+5Vsinglepowersupply(selectedbyVCHApin) ?Bysettingthestandbypintoalowlevel(standbymode),circuitcurrentcanbereduced.Atsuchtimes, thedriveroutputisinahigh-impedancestate.

ZM4721

foruseinstabilizingandclippingcircuitswithhighpowerrating.