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Analog Devices LT1039CN#PBF — Sensors & Transducers

LT1039CN#PBF RS232 Transceiver 3/3 Full Duplex 18-DIP

MPNLT1039CN#PBF
End of Life

Analog Devices LT1039CN#PBF, RS232 Transceiver, Full Duplex, 3 Drivers / 3 Receivers, 5V ~ 15V Supply, 400 mV Receiver Hysteresis, 0°C ~ 70°C, 18-DIP (0.300", 7.62mm), Tube

$7.95Ref. price · indicative, final on quote
Analog Devices LT1039CN#PBF datasheet (PDF)
Packaging18-DIP (0.300", 7.62mm)
RoHSROHS3 Compliant
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

LT1039CN#PBF specifications
ParameterValue
TypeTransceiver
MountingThrough Hole
Voltage5V ~ 15V
ProtocolRS232
Operating temperature0°C ~ 70°C
DuplexFull
PackageTube
Case18-DIP (0.300\", 7.62mm)
Receiver hysteresis400 mV
Number of drivers (Receivers)3/3

Product details

RS232 transceiver with three full channels

The LT1039CN#PBF is an RS232 transceiver from Analog Devices, offering three drivers and three receivers in a full-duplex configuration — one more channel than the common 2/2 parts like the ADM202JNZ. That extra channel saves a second transceiver when the BOM calls for three RS232 ports.

Supply flexibility and receiver noise margin

Receiver hysteresis is specified at 400 mV, which filters out line noise on long RS232 cables without external schmitt triggers. Compared to the ADM202JNZ (2/2) or the ADM233LJNZ (2/2), the LT1039CN#PBF's 3/3 channel count and wider supply range are the deciding factors when the system needs three RS232 ports on a single DIP package.

Active production and through-hole package

The 18-pin DIP through-hole package is suitable for prototyping, legacy board repairs, or designs where socketed ICs are preferred for field service.

Frequently asked questions

Is LT1039CN#PBF a drop-in replacement for LT1039CN (non-#PBF)?

The #PBF suffix indicates ROHS3 compliance. Electrically the part is identical to the non-#PBF version; the lead finish is the only difference. Confirm your board's solder profile accepts the ROHS-compliant finish before substituting.

Can LT1039CN#PBF replace a MAX232?

The MAX232 is a 2/2 RS232 transceiver. The LT1039CN#PBF has three drivers and three receivers, so it is not a direct pin-for-pin replacement. If the design uses only two channels, the extra driver and receiver float, but the pinout differs — a board layout change is required.