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Analog Devices MAX3109ETJ+T — Interface & Transceivers
Analog Devices

MAX3109ETJ+T Dual UART, 24Mbps, 128-Byte FIFO, TQFN

MPNMAX3109ETJ+T
End of Life

Analog Devices MAX3109ETJ+T dual UART, 2-channel DUART, 24Mbps max data rate, 128-byte FIFO, RS232/RS485 protocol, 1.71-3.6V supply, 32-TQFN (5x5) surface-mount package.

$13.64Ref. price · indicative, final on quote
Packaging32-WFQFN Exposed Pad
StockContact for availability
Lead timeIn Stock wk
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

MAX3109ETJ+T Technical Specifications
ParameterValue
Mounting typeSurface Mount
Voltage1.71V ~ 3.6V
ProtocolRS232, RS485
FIFO's128 Byte
PackageTape & Reel (TR); Cut Tape (CT)
FeaturesInternal Oscillator
Case32-WFQFN Exposed Pad
Data rate24Mbps
Number of channels2, DUART
With auto flow controlYes
With IrDA encoder (Decoder)Yes
With false start bit detectionYes

Product details

Dual UART with 128-byte FIFO and 24 Mbps throughput

The MAX3109ETJ+T is a 2-channel DUART from Analog Devices, supporting RS232 and RS485 protocols at a maximum data rate of 24 Mbps. Each channel includes a 128-byte FIFO, which reduces host interrupt overhead by buffering received data until a threshold is reached, and the part integrates an internal oscillator to generate the baud clock without an external crystal. With auto flow control, IrDA encoder/decoder, and false start bit detection on board, this UART handles the full RS232 handshake and infrared communication without glue logic.

It is ROHS3 compliant, meeting the current EU restriction on hazardous substances directive.

Frequently asked questions

What is the FIFO size on the MAX3109ETJ+T?

The MAX3109ETJ+T has a 128-byte FIFO per channel, which buffers received data to reduce the interrupt service routine frequency on the host processor.

What protocols does the MAX3109ETJ+T support?

It supports RS232 and RS485 protocols, with integrated auto flow control for hardware handshake and an IrDA encoder/decoder for infrared serial communication.