TP8485E

± 12K ESD Protection, Full Fail-Safe RS-485 Transceiver

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Overview
Development Resources
Application
Ordering Detail

Overview

The TP8485E are 3V~5.5V powered transceivers that meet the RS-485 and RS-422 standards for balanced communication. Driver outputs and receiver inputs are protected against ±12kV ESD strikes without latch-up.

Transmitters in this family deliver exceptional differential output voltages (2.5V min/5Vcc), into the RS-485 required 54Ω load, for better noise immunity, or to allow up to eight 120Ω terminations in “star” topologies. These devices have very low bus currents so they present a true “1/8 unit load” to the RS-485 bus. This allows up to 256 transceivers on the network without using repeaters. Receiver (Rx) inputs feature a “Full Fail-Safe” design, which ensures a logic high Rx output if Rx inputs are floating, shorted, or on a terminated but undriven bus. Rx outputs feature high drive levels - typically 25mA @ VOL = 1V (to ease the design of optocoupled isolated interfaces).

The TP8485E is available in an SOIC-8 and MSOP-8 package, and is characterized from –40°C to 125°C.

Status

Production
Rating

Industrial
Drivers Per Package

1
Receivers Per Package

1
VCC (Min) (V)

3
VCC (Max) (V)

5.5
Data Rate (Max) (kBPS)

250
ICC (Max) (mA)

0.93
ESD HBM (kV)

18
IEC-61000-4-2 Contact (kV)

Yes
Operating Temperature Range (℃)

-40 to +125
Package

SOP8, MSOP8

Development Resources

Documentation

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Documentation
- Data Sheet
- Selection Guide
- Application Note
- Technical Note
- User Guide
- Test Report
- Document Name
- Type
- Language
- Date
- Datasheet_TP8485E
  
  Data Sheet
  
  English
  
  02/02/2024
  
  ±12K ESD Protection, Full Fail-Safe RS-485 Transceiver
- Introduction to Latch-up and the Preventive Measures
  
  Technical Note
  
  English
  
  01/19/2024
- Automatic Correction Scheme of RS-485 Communication Bus Cross-Wire Fault
  
  Technical Note
  
  English
  
  01/19/2024
- Application Tips on ESD-EOS
  
  Technical Note
  
  English
  
  01/19/2024
- 3PEAK Analog Products Selection Guide
  
  Selection Guide
  
  English
  
  01/19/2024

Application

• E-Metering Networks

• Industrial Automation

• HVAC Systems

• Process Control

• DMX512-Networks

• Battery-Powered Applications

Ordering Detail

Order Part Number	Buy	Samples	Rating	Feature	Status	1ku Price	Release Date	Package	Lead time (week)	MSL	Packing	MPQ	CPQ
TP8485E-SR	Buy now	Request	Industrial Grade	/	Released	$0.345	2015-03-01	SOP8	8	MSL3	T&R	4000	20000
TP8485E-VR	Buy now	Request	Industrial Grade	/	Released	$0.345	2015-10-01	MSOP8	8	MSL3	T&R	3000	15000