3-V To 5.5-V Multichannel RS-232 Line Driver/Receiver

The SN65C3221 and SN75C3221 consist of one Line Driver one line receiver, and a dual charge-pump circuit with 15-kV ESD protection pin to pin (serial-port connection pins, including GND). These devices provide the electrical Interface between an asynchronous Communication controller and the serial-port connector. The Charge Pump and four small external capacitors allow operation from a single 3-V to 5.5-V supply. These devices operate at data signaling rates up to 1 Mbit/s and a driver output slew rate of 24 V/s to 150 V/s.
Flexible control options for Power Management are available when the serial port is inactive. The auto-powerdown feature functions when FORCEON is low and FORCEOFF is high. During this mode of operation, if the devices do not sense a valid RS-232 signal on the receiver input, the driver output is disabled. If FORCEOFF is set low and EN is high, both the driver and receiver are shut off, and the supply current is reduced to 1 A. Disconnecting the serial port or turning off the peripheral drivers causes the auto-powerdown condition to occur. Auto-powerdown CAN be disabled when FORCEON and FORCEOFF are high. With auto-powerdown enabled, the device is activated automatically when a valid signal is applied to the receiver input. The INVALID output notifies the user if an RS-232 signal is present at the receiver input. INVALID is high (valid data) if the receiver input voltage is greater than 2.7 V or less than ?2.7 V, or has been between ?0.3 V and 0.3 V for less than 30 s. INVALID is low (invalid data) if the receiver input voltage is between ?0.3 V and 0.3 V for more than 30 s. Refer to Figure 5 for receiver input levels.
By Texas Instruments
Part Manufacturer Description Datasheet Samples
SN75C3221DBR Texas Instruments 3-V To 5.5-V Multichannel RS-232 Line Driver/Receiver 16-SSOP 0 to 70
SN75C3221PWRG4 Texas Instruments 3-V To 5.5-V Multichannel RS-232 Line Driver/Receiver 16-TSSOP 0 to 70
SN75C3221EPWRG4 Texas Instruments LINE TRANSCEIVER, PDSO16, GREEN, PLASTIC, TSSOP-16
SN75C3221DW Texas Instruments 3-V To 5.5-V Multichannel RS-232 Line Driver/Receiver 16-SOIC 0 to 70
SN75C3221EDBR Texas Instruments 3-V To 5.5-V Single Channel RS-232 1 Mbit/s Line Driver/Receiver 16-SSOP 0 to 70
SN75C3221EDBRG4 Texas Instruments LINE TRANSCEIVER, PDSO16, GREEN, PLASTIC, SSOP-16
SN75C3221PWR Texas Instruments 3-V To 5.5-V Multichannel RS-232 Line Driver/Receiver 16-TSSOP 0 to 70
SN75C3221EPWR Texas Instruments 3-V To 5.5-V Single Channel RS-232 1 Mbit/s Line Driver/Receiver 16-TSSOP 0 to 70
SN75C3221PWRE4 Texas Instruments LINE TRANSCEIVER, PDSO16, GREEN, PLASTIC, TSSOP-16
SN75C3221EPWRE4 Texas Instruments LINE TRANSCEIVER, PDSO16, GREEN, PLASTIC, TSSOP-16
SN75C3221 's PackagesSN75C3221 's pdf datasheet
SN75C3221DB SSOP
SN75C3221DBR SSOP
SN75C3221DBRE4 SSOP
SN75C3221DBRG4 SSOP
SN75C3221DW SOIC
SN75C3221DWR SOIC
SN75C3221PW TSSOP
SN75C3221PWE4 TSSOP
SN75C3221PWG4 TSSOP
SN75C3221PWR TSSOP
SN75C3221PWRE4 TSSOP
SN75C3221PWRG4 TSSOP




SN75C3221 Pinout, Pinouts
SN75C3221 pinout,Pin out
This is one package pinout of SN75C3221,If you need more pinouts please download SN75C3221's pdf datasheet.

SN75C3221 Application circuits
SN75C3221 circuits
This is one application circuit of SN75C3221,If you need more circuits,please download SN75C3221's pdf datasheet.


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