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Texas Instruments SN65C3221DBR — Sensors & Transducers
Texas Instruments

SN65C3221DBR RS-232 Transceiver 1/1 Full Duplex 1Mbps

MPNSN65C3221DBR
End of Life

Texas Instruments SN65C3221DBR, RS-232 transceiver, 1 driver / 1 receiver, full duplex, 1 Mbps data rate, 3 V to 5.5 V supply, 16-SSOP package, -40°C to 85°C operation.

$2.7Ref. price · indicative, final on quote
SN65C3221DBR datasheet
Packaging16-SSOP (0.209", 5.30mm Width)
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
  • PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.

Specifications

SN65C3221DBR Technical Specifications
ParameterValue
TypeTransceiver
Mounting typeSurface Mount
Voltage3V ~ 5.5V
ProtocolRS232
Operating temperature-40°C ~ 85°C
DuplexFull
PackageTape & Reel (TR); Cut Tape (CT)
Data rate1Mbps
Case16-SSOP (0.209\", 5.30mm Width)
Receiver hysteresis500 mV
Number of drivers (Receivers)1/1

Product details

It handles full-duplex communication at data rates up to 1 Mbps, making it suitable for point-to-point serial links in industrial and consumer equipment.

Supply voltage range and logic compatibility

The receiver hysteresis of 500 mV provides noise immunity on the RS-232 bus, reducing false triggering on long cable runs.

Temperature grade and package

The 16-SSOP package (5.30 mm body width) is a surface-mount footprint that suits compact PCB layouts, though the 0.209-inch (5.30 mm) width requires careful routing on dense boards.

Lifecycle and sourcing posture

Sourcing is straightforward — quoted per RFQ against the BOM quantity.

Frequently asked questions

What is the difference between SN65C3221DBR and SN65C3221DB?

The SN65C3221DBR is the tape-and-reel (TR) packaging variant of the SN65C3221DB, which is typically supplied in tubes or cut tape. The electrical specifications and package (16-SSOP) are identical. The 'R' suffix indicates reel packaging for automated assembly.

Does SN65C3221DBR require external charge pump capacitors?

Yes, like most RS-232 transceivers, the SN65C3221DBR needs external charge pump capacitors to generate the RS-232 voltage levels. The datasheet specifies typical values (0.1 µF to 1 µF) and connection pins — consult the TI datasheet for the exact schematic.