SN75LP1185DWG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock

Name: SN75LP1185DWG4
Brand: Texas Instruments
SKU: SN75LP1185DWG4
Availability: InStock

Texas Instruments SN75LP1185DWG4 is a multichannel RS-232 line transceiver with 3 transmitters, 5 receivers, and 3 transceivers in a 20-pin SOIC package. It complies with EIA/TIA-232-F and V.28 standards and features Schmitt-trigger inputs for enhanced noise immunity. Available from stock with worldwide shipping.

OBSOLETEIntegrated CircuitVerified May 2026

Package / Visual Reference

SN75LP1185DWG4Small Outline Packages

Quick Facts

Manufacturer: Texas Instruments
Package: Small Outline Packages
Pin Count: 20
Lifecycle: OBSOLETE
Datasheet: SN75LP1185DWG4 Datasheet PDF
Category: Integrated Circuit
Temp Range: ?°C to 70.0°C
RoHS: Compliant
Lead Time: 3–7 business days
Shipping: DHL Express · Worldwide

What are the key features of SN75LP1185DWG4?

3 drivers + 5 receivers + 3 transceivers in a single 20-pin SOIC, maximizing channel density per IC
Schmitt-trigger inputs reject slow or noisy signal transitions on RS-232 lines without external components
Full EIA/TIA-232-F and V.28 compliance enables drop-in replacement in legacy serial port designs

What is SN75LP1185DWG4 used for?

SN75LP1185DWG4 is suited for industrial control panels, embedded computing boards, and legacy serial-port adapters where multiple RS-232 channels must be handled in a compact footprint. Its integrated transceiver channels simplify half-duplex bus implementations such as point-of-sale terminals and serial printer interfaces. The Schmitt-trigger input stage improves reliability in electrically noisy factory environments.

What are the specifications of SN75LP1185DWG4?

YTEOL	0
Additional Feature	ALSO REQUIRES -9 TO -15 SUPPLY
Differential Output	NO
Driver Number of Bits	3
High Level Input Current-Max	0.000001A
Input Characteristics	SCHMITT TRIGGER
Interface IC Type	LINE TRANSCEIVER
Interface Standard	EIA-232-F; TIA-232-F; V.28
JESD-30 Code	R-PDSO-G20
JESD-609 Code	e4
Number of Functions	3
Out Swing-Min	10V
Output Low Current-Max	0.000001A
Output Polarity	TRUE
Package Body Material	PLASTIC/EPOXY
Package Equivalence Code	SOP20,.4
Package Shape	RECTANGULAR
Package Style	SMALL OUTLINE
Peak Reflow Temperature (Cel)	260
Qualification Status	Not Qualified
Receive Delay-Max	900ns
Receiver Number of Bits	5
Supply Current-Max	1mA
Supply Voltage-Max	5.25V
Supply Voltage-Min	4.75V
Supply Voltage-Nom	5V
Supply Voltage1-Max	15V
Supply Voltage1-Min	9V
Supply Voltage1-Nom	12V
Surface Mount	YES
Technology	BIPOLAR
Temperature Grade	COMMERCIAL
Terminal Finish	NICKEL PALLADIUM GOLD
Terminal Form	GULL WING
Terminal Pitch	1.27mm
Terminal Position	DUAL
Time@Peak Reflow Temperature-Max (s)	30
Transmit Delay-Max	1600ns
Package	Small Outline Packages

Compliance & Regulatory

RoHS Status	Compliant
Lead-Free	Yes (Pb-Free)
Moisture Sensitivity Level	MSL 1
ECCN	EAR99
HTS Code	8542.39.00.60

Where can I find the SN75LP1185DWG4 datasheet?

SN75LP1185DWG4 Datasheet Download

Official datasheet from Texas Instruments

What are equivalent replacements for SN75LP1185DWG4?

Compatible alternatives and drop-in replacements for SN75LP1185DWG4:

SN75LP1185DWTexas Instruments

Line Transceiver, 3 Func, 3 Driver, 5 Rcvr, BIPolar, PDSO20

View Part →

Compare all alternatives & request quotes →

Frequently Asked Questions

How many independent RS-232 channels does SN75LP1185DWG4 integrate, and what is the channel breakdown?

SN75LP1185DWG4 integrates 11 RS-232 channels in one 20-pin SOIC: 3 dedicated transmitters, 5 dedicated receivers, and 3 bidirectional transceivers. This combination allows designers to handle asymmetric bus topologies common in industrial serial communication without adding a second device.

Why are Schmitt-trigger inputs on SN75LP1185DWG4 important for industrial RS-232 designs?

Schmitt-trigger inputs add approximately 0.2 V to 0.8 V of hysteresis, so slow-rising or noisy transitions on RS-232 lines up to ±15 V do not cause false toggling. This reduces the need for external filtering capacitors and improves bit-error rates in electrically noisy factory or automotive environments where ground loops are common.

When would an engineer choose SN75LP1185DWG4 over a simpler 2-driver / 3-receiver RS-232 transceiver?

SN75LP1185DWG4 is the better choice when a design needs to interface with 3 or more bidirectional ports simultaneously, such as a multi-port serial PLC controller or a modem card that handles up to 5 receive channels at once. Its 20-pin SOIC package keeps board area under roughly 125 mm² while covering all 11 signal paths.

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About Texas Instruments

Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.

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SN75LP1185DWG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock

What are the key features of SN75LP1185DWG4?

What is SN75LP1185DWG4 used for?

What are the specifications of SN75LP1185DWG4?

Compliance & Regulatory

Where can I find the SN75LP1185DWG4 datasheet?

What are equivalent replacements for SN75LP1185DWG4?

Frequently Asked Questions

How many independent RS-232 channels does SN75LP1185DWG4 integrate, and what is the channel breakdown?

Why are Schmitt-trigger inputs on SN75LP1185DWG4 important for industrial RS-232 designs?

When would an engineer choose SN75LP1185DWG4 over a simpler 2-driver / 3-receiver RS-232 transceiver?

Related Guides

STM32H725IGT3 Selection Guide: Memory, Package, Temperature, and Supply

STM32H725IGT3 High-Performance MCU Design Guide

150141VS73100 Violet SMD LED Selection Guide: Color, Drive, and Sourcing

STEF05SGR 5 V eFuse Protection Design Guide

Why Buy from FindMyChip

About Texas Instruments

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