3-V To 5.5-V Dual RS-232 Port

The SN65C23243 and SN75C23243 consist of two ports, each containing three Line Drivers and five line receivers, and a dual charge-pump circuit with 15-kV ESD protection pin to pin (serial-port connection pins, including GND). These devices meet the requirements of TIA/EIA-232-F and provide the electrical Interface between an asynchronous Communication controller and the serial-port connector. This combination of drivers and receivers matches that needed for two typical serial ports used in an IBM PC/AT, or compatible. The Charge Pump and four small external capacitors allow operation from a single 3-V to 5.5-V supply. In addition, these devices include an always-active noninverting output (ROUT2) per port, which allows applications using the ring indicator to transmit data while the devices are powered down. The devices operate at data signaling rates up to 250 kbit/s, and a maximum of 30-V/s driver output slew-rate.
Flexible control options for Power Management are available when either or both serial ports are inactive. The auto-powerdown feature functions when FORCEON is low and FORCEOFF is high. During this mode of operation, if the device does not sense a valid RS-232 signal, the driver outputs of its respective port are disabled. If FORCEOFF is set low, both drivers and receivers (except ROUT2) 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, and should be done when driving a serial mouse. With auto-powerdown enabled, the RS-232 port is activated automatically when a valid signal is applied to any respective receiver input. The INV output is used to notify the user if an RS-232 signal is present at any receiver input. INV is high (valid data) if any 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. INV is low (invalid data) if all receiver input voltages are 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
SN75C23243CDGGR Texas Instruments 3-V to 5.5-V Dual RS-232 Port 48-TSSOP
SN75C23243DGGRG4 Texas Instruments HEX LINE TRANSCEIVER, PDSO48, GREEN, PLASTIC, TSSOP-48
SN75C23243DGGRE4 Texas Instruments HEX LINE TRANSCEIVER, PDSO48, GREEN, PLASTIC, TSSOP-48
SN75C23243DGGR Texas Instruments 3-V to 5.5-V Dual RS-232 Port 48-TSSOP 0 to 70
SN75C23243DLR Texas Instruments 3-V to 5.5-V Dual RS-232 Port 48-SSOP 0 to 70
SN75C23243DLRG4 Texas Instruments 3-V to 5.5-V Dual RS-232 Port 48-SSOP 0 to 70
SN75C23243CDLR Texas Instruments 3-V to 5.5-V Dual RS-232 Port 48-SSOP
SN75C23243 's PackagesSN75C23243 's pdf datasheet
SN75C23243DGGR TSSOP
SN75C23243DGGRE4 TSSOP
SN75C23243DGGRG4 TSSOP
SN75C23243DL SSOP
SN75C23243DLG4 SSOP
SN75C23243DLR SSOP
SN75C23243DLRG4 SSOP




SN75C23243 Pinout, Pinouts
SN75C23243 pinout,Pin out
This is one package pinout of SN75C23243,If you need more pinouts please download SN75C23243's pdf datasheet.

SN75C23243 Application circuits
SN75C23243 circuits
This is one application circuit of SN75C23243,If you need more circuits,please download SN75C23243's pdf datasheet.


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