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Analog Devices LT1781CN#PBF — Sensors & Transducers

LT1781CN#PBF RS-232 Transceiver, 250 kBd, 16-PDIP

MPNLT1781CN#PBF
End of Life

Analog Devices LT1781CN#PBF, RS-232 Transceiver, Full Duplex, 2/2 Drivers/Receivers, 250 kBd, 4.5V–5.5V Supply, 0°C–70°C, 16-PDIP (0.300", 7.62mm), Tube

$7.42Ref. price · indicative, final on quote
Packaging16-DIP (0.300", 7.62mm)
RoHSROHS3 Compliant
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

LT1781CN#PBF specifications
ParameterValue
TypeTransceiver
MountingThrough Hole
Voltage4.5V ~ 5.5V
ProtocolRS232
Operating temperature0°C ~ 70°C
DuplexFull
PackageTube
Data rate250KBd
Case16-DIP (0.300\", 7.62mm)
Receiver hysteresis400 mV
Number of drivers (Receivers)2/2

Product details

RS-232 Interface IC in 16-PDIP

It operates from a single 4.5V to 5.5V supply and supports a data rate of 250 kBd, making it suitable for legacy serial ports, industrial control panels, and test equipment that still use DB-9 or DB-25 connectors.

Commercial Temperature Range and Through-Hole Mounting

The 16-DIP (0.300", 7.62mm) package with through-hole mounting simplifies prototyping and field replacement compared to surface-mount packages, but occupies more board area and limits placement density on high-volume boards. Among RS-232 transceivers in similar DIP packages, the ADM233LJNZ runs at 120 Kbps (roughly half the data rate) and the ADM222ANZ offers 200 Kbps with a wider -40°C to 85°C temperature range, so the LT1781CN#PBF sits in the middle on speed but is limited to commercial temperature.

Frequently asked questions

Where can I buy LT1781CN#PBF?

Buyers need immediate sourcing options to place orders.

What is the price of LT1781CN#PBF?

Price determines purchase decisions and budget planning.

Is LT1781CN#PBF obsolete?

Lifecycle status affects availability and long-term reliability for designs.

What are the alternatives to LT1781CN#PBF?

Engineers and buyers need drop-in replacements or cross references for sourcing flexibility.

Does LT1781CN#PBF require external capacitors?

RS232 transceivers often need charge pump capacitors; missing this spec can cause design failures.

What is the pinout of LT1781CN#PBF?

Designers need pin mapping to ensure correct PCB layout and circuit integration.