It appears you have JavaScript disabled within your browser. Some functions on this page will not work unless you log in.

Return to Search Results

See an Error?

ST4E1240DT

Name: STMicroelectronics ST4E1240DT
Brand: STMicroelectronics
SKU: 511-ST4E1240DT
Price: 2.25 CAD
Availability: InStock

Images are for reference only
See Product Specifications

Mouser #:

511-ST4E1240DT

Mfr. #:

ST4E1240DT

Mfr.:

STMicroelectronics

Description:

RS-485 Interface IC High-speed 3.3V / 5V RS485 trans +- 12 kV IEC 61000-4-2 contact ESD protect

Complete Your Design

Datasheet:

ST4E1240DT Datasheet (PDF)

ECAD Model:

Download the free Library Loader to convert this file for your ECAD Tool. Learn more about ECAD Model.

More Information

Learn more about STMicroelectronics ST4E1240DT

In Stock: 1,927

Stock:: 1,927

Can Ship Immediately

An unexpected error occurred. Please try again later.
On Order:: 2,500

Expected 2026-03-20
Factory Lead-Time:: 16

Weeks Estimated factory production time for quantities greater than shown.

Enter Quantity:

Minimum: 1 Multiples: 1

Unit Price:

$-.--

Ext. Price:

$-.--

Est. Tariff:

Packaging:

Full Reel (Order in multiples of 2500)

Cut Tape

MouseReel™ (+$8.50)

Pricing (CAD)

Qty.	Unit Price	Ext. Price
Cut Tape / MouseReel™ ^†
	$2.25	$2.25
	$1.89	$18.90
	$1.67	$41.75
	$1.63	$163.00
	$1.50	$375.00
	$1.44	$720.00
	$1.42	$1,420.00
Full Reel (Order in multiples of 2500)
	$1.23	$3,075.00
	$1.17	$5,850.00

† $8.50 MouseReel™ fee will be added and calculated in your shopping cart. All MouseReel™ orders are non-cancellable and non-returnable. ↩

.hidden-for-nojs { display: none; } .pull-right-nojs { justify-content: flex-end; }

Product Attribute	Attribute Value	Select Attribute
Manufacturer:	STMicroelectronics
Product Category:	RS-485 Interface IC
RoHS:
Mounting Style:	SMD/SMT
Package / Case:	SO-8
Function:	Transceiver
Data Rate:	40 Mb/s
Number of Drivers:	1 Driver
Number of Receivers:	1 Receiver
Duplex:	Half Duplex
Supply Voltage - Max:	5.5 V
Supply Voltage - Min:	3 V
Operating Supply Current:	1.77 mA
Minimum Operating Temperature:	- 40 C
Maximum Operating Temperature:	+ 85 C
Packaging:	Reel
Packaging:	Cut Tape
Packaging:	MouseReel
Brand:	STMicroelectronics
Input Voltage:	3 V to 5.5 V
Operating Supply Voltage:	3 V to 5.5 V
Output Current:	70 mA
Pd - Power Dissipation:	370 mW
Product:	Transceivers
Product Type:	RS-485 Interface IC
Propagation Delay Time:	20 ns
Shutdown:	Shutdown
Factory Pack Quantity:	2500
Subcategory:	Interface ICs
Type:	High Speed

Products found:

To show similar products, select at least one checkbox

Select at least one checkbox above to show similar products in this category.

Attributes selected: 0

Filter Document:

Datasheet

ST4E1240DT Datasheet (PDF)

PCN

This functionality requires JavaScript to be enabled.

CAHTS:: 8542390000
CNHTS:: 8542399000
USHTS:: 8542390090
MXHTS:: 8542399999
ECCN:: EAR99

ST4E12x High-Speed 3.3V/5V RS485 Transceivers

STMicroelectronics ST4E12x High-Speed 3.3V/5V RS485 Transceivers are low-power differential line transceivers for data transmission in standard RS485 applications in half-duplex mode. ST4E1216 and ST4E1240 are compatible with 3.3V or 5V rail power supplies and operate from 3V to 5.5V. These transceivers operate at data rates up to 16Mbps (ST4E1216) and 40Mbps (ST4E1240). The components are ideal for multipoint applications over extended cable runs and are robust to ESD transients. In particular, the bus pins support ±12kV IEC 61000-4-2 contact discharge. The STMicroelectronics ST4E12x High-Speed RS485 Transceivers also feature robust hot-swap capability during on/off switching or hot insertion. The transceivers are available in the standard SO-8 package and operate with a -40°C to +125°C (ST4E1216) and -40°C to +85°C (ST4E1240) temperature range.

Low-Power High-Speed Transceivers

STMicroelectronics Low-Power, High-Speed Transceivers are designed for RS-485, RS-422, and RS-423 communication applications. They usually contain one driver and one receiver in a half-duplex configuration. Each driver output and receiver input is protected against electrostatic discharge up to ±15kV and has no latch-up. These STMicroelectronics Low-Power, High-Speed Transceivers operate with a 5V supply and draw a very low supply current when unloaded or fully loaded but with disabled drivers. A SERCOS interface controller for industrial control systems enables real-time communication via optical fiber rings, RS-485 rings, and RS-485 buses.

Standard Products

STMicroelectronics Standard Products are a broad range of industry-standard and drop-in replacements for the most popular general-purpose analog ICs, discretes, and serial EEPROMs. The Standard Products are manufactured to the highest quality standards with many AECQ-qualified for automotive applications. A comprehensive set of STMicroelectronics design aids, including SPICE, IBIS models, and simulation tools, is available to make adding to a design-in easy.