Linear Technology introduced the LTC2876 and LTC2877, exceptionally rugged, high-voltage tolerant RS-485 transceivers targeted for Profibus-DP (decentralised periphery) master and slave devices.
As with any fieldbus, Profibus-DP systems are prone to installation cross-wiring faults, ground voltage faults or surge, which can cause catastrophic over-voltage conditions that exceed the absolute maximum ratings of typical transceivers. Whether transmitting, receiving, in standby or powered off, the LTC2876 and LTC2877 tolerate ±60 V on their bus pins, eliminating common damage due to transmission line faults.
The devices provide multiple levels of protection that make them suitable for a variety of applications, including discrete manufacturing and process automation. An extended ±25 V input common-mode range and full failsafe operation improve data communications reliability in electrically noisy environments and in the presence of ground loop voltages, which would otherwise cause data errors and possible device damage.
Their incredibly high ESD protection guarantees the LTC2876 and LTC2877 can withstand ±52 kV HBM on the transceiver pins without latchup or damage; all other pins are protected to ±15 kV HBM. Fully symmetric receiver thresholds ensure the devices maintain good duty cycle symmetry at low signal levels and boost receiver noise immunity, while supporting full failsafe operation. Both devices are tested with Profibus IEC 61158-2 and TIA/EIA-485-A (RS-485) loads to ensure compatibility with both standards.
The ICs are offered in commercial, industrial and automotive versions, supporting operating temperature ranges of 0°C to 70°C, -40°C to 85°C, and -40°C to 125°C, respectively. The LTC2876 is available in a RoHS compliant 8-pin 3 x 3 mm DFN or MSOP package, while the LTC2877 includes a logic supply and is available in a RoHS compliant 10-pin 3 x 3 mm DFN or MSOP package.
Converter power modules for 48 V networks Altron Arrow
Power Electronics / Power Management
The economic and quality-of-life benefits of electrification is driving the adoption of HV to 48 V DC-DC conversion across many markets with 48 V power modules becoming more common.
Read more...Memory for asset tracking Altron Arrow
DSP, Micros & Memory
The Page EEPROM, ST’s latest memory, has been designed for efficient datalogging and fast firmware upload/download in battery-operated devices.
Read more...Multiprotocol wireless SoC RF Design
Telecoms, Datacoms, Wireless, IoT
The nRF54LM20A from Nordic Semiconductor is a multiprotocol wireless System-on-Chip designed for demanding designs in Bluetooth devices.
Read more...High performance communication iCorp Technologies
Telecoms, Datacoms, Wireless, IoT
Quectel’s FCS950R is a high-performance Wi-Fi 5 and Bluetooth 4.2 module that can deliver a maximum data rate up to 433,3 Mbps in 802.11ac mode.
Read more...Microchip and AVIVA Links collaboration Altron Arrow
News
Microchip and AVIVA Links have achieved groundbreaking ASA-ML interoperability, accelerating the shift to open standards for automotive connectivity.
Read more...Expanded STM32WL3x line for IoT sensors Altron Arrow
Telecoms, Datacoms, Wireless, IoT
The STM32WL31x and STM32WL30x are more tailored versions of the STM32WL33x for designers who wish to focus on specific features, while lowering their bill of materials.
Read more...Full-band GNSS helical antenna RF Design
Telecoms, Datacoms, Wireless, IoT
A key feature of Calian’s HC3990XF antenna design is that it does not require a ground plane, making it ideal for size-constrained applications.
Read more...BLE and BT Mesh module iCorp Technologies
Telecoms, Datacoms, Wireless, IoT
The HM-BT4531 from HOPERF is a BLE data transmission module that features an ARM Cortex-M0 32-bit processor.
While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.
printer friendly version