SN65C3221PW ,3-V To 5.5-V Multichannel RS-232 Line Driver/Receivermaximum ratings” may cause permanent damage to the device. These are stress ratings only, andfuncti ..
SN65C3221PWR ,3-V To 5.5-V Multichannel RS-232 Line Driver/Receiverelectrical characteristics over recommended ranges of supply voltage and operating free-airtemperat ..
SN65C3221PWRE4 ,3-V To 5.5-V Multichannel RS-232 Line Driver/Receiver 16-TSSOP -40 to 85/sc/package.Please be aware that an important notice concerning availability, standard warranty, an ..
SN65C3222DBR ,3-V To 5.5-V Multichannel RS-232 Compatible Line Driver/Receiver SLLS534B − MAY 200 ..
SN65C3222EDB ,3-V to 5.5-V Multichannel RS-232 Line Driver/Receiver With +/-15-kV ESD (HBM) Protection 20-SSOP -40 to 85SLLS725A–JUNE 2006–REVISED JULY 2006ORDERING INFORMATION(1)T PACKAGE ORDERABLE PART NUMBER TOP-SIDE ..
SN65C3222EDBR ,3-V to 5.5-V Multichannel RS-232 Line Driver/Receiver With +/-15-kV ESD (HBM) Protection 20-SSOP -40 to 85FEATURESDB, DW, OR PW PACKAGE• ESD Protection for RS-232 Bus Pins(TOP VIEW)– ±15-kV Human-Body Mode ..
SN74HC245DWR ,Octal Bus Transceivers With 3-State OutputsMaximum Ratings(1)over operating free-air temperature range (unless otherwise noted)MIN MAX UNITV S ..
SN74HC245DWRG4 ,Octal Bus Transceivers With 3-State Outputs 20-SOIC -40 to 85Logic Diagram (Positive Logic)1DIR19OE2A118B1To Seven Other Channels1An IMPORTANT NOTICE at the end ..
SN74HC245N ,Octal Bus Transceivers With 3-State OutputsLogic Diagram (Positive Logic)1DIR19OE2A118B1To Seven Other Channels1An IMPORTANT NOTICE at the end ..
SN74HC245NSR ,Octal Bus Transceivers With 3-State OutputsSample & Support &Product Tools &TechnicalCommunityBuyFolder Documents SoftwareSN54HC245,SN74HC245S ..
SN74HC245PW ,Octal Bus Transceivers With 3-State OutputsElectrical Characteristics....... 512.1 Related Links.. 116.6 Switching Characteristics, C = 50 pF. ..
SN74HC245PW ,Octal Bus Transceivers With 3-State OutputsSample & Support &Product Tools &TechnicalCommunityBuyFolder Documents SoftwareSN54HC245,SN74HC245S ..
SN65C3221DB-SN65C3221DBR-SN65C3221DBRE4-SN65C3221PW-SN65C3221PWR-SN65C3221PWRE4
3-V To 5.5-V Multichannel RS-232 Line Driver/Receiver
Accepts 5-V Logic Input With 3.3-V Supply RS-232 Bus-Pin ESD Protection Exceeds±15 kV Using Human-Body Model (HBM)
Auto-Powerdown Feature Automatically
Disables Drivers for Power Savings Applications
− Battery-Powered, Hand-Held, and
Portable Equipment
− PDAs and Palmtop PCs
− Notebooks, Sub-Notebooks, and Laptops
− Digital Cameras
− Mobile Phones and Wireless Devices
description/ordering informationThe 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/µs to 150 V/µs.
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 µA. 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 µs. INVALID is low (invalid data) if the receiver input voltage is between −0.3 V and
0.3 V for more than 30 µs. Refer to Figure 5 for receiver input levels.
ORDERING INFORMATION†Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
C1−
C2+
C2−
RIN
GND
DOUT
FORCEON
DIN
INVALID
ROUT
