Inside

• ADCs enable single chip solution from CCD output to digital domain
• New CD-based "Designer's Guide and Data Book" allow for powerful searches
• TI offers high-preformance total graphics solultion
• Programmable dual DACs let designers trade power for speed
• 10-Bit, 20 MSPS ADC provides high resolution and speed with 33% power savings
• Plug-N-Play platform provides easy evaluation of all TI audio power amplifiers
• 6 W stereo audio power amplifier in PowerPAD^TM package
• Three channel 1.75 W stereo audio power amplifier
• Fully integrated single channel PCMCIA power distribution switch
• High-speed 132 MBps PCI-to-PCI bridge
• RS-485 transceiver with integrated protection
• New amplifiers data book now available

RS-485 transceiver with integrated protection

Product Features

• Integrated transient voltage protection
• Circuit damage protection of 400 W peak
• >250 Kbps throughput in electrically noisy environments
• Characterized for operation from 0°C to 70°C (SN75LBC184), –40°C to 85°C (SN65LBC184)

The SN75LBC184 is the industry’s first ‘176 standard footprint RS-485 differential transceiver to offer integrated transient voltage protection up to 400W peak. The SN75LBC184 provides significant protection from large over-voltage transients on the bus pins which can be caused by secondary effects of a lightning strike or power system switching disturbances.

These devices are well-suited for electrically noisy environments requiring large over-voltage and common mode swing protection. The SN75LBC184 and SN65LBC184 provide substantial benefits for improved reliability and enhanced system performance resulting in total system cost savings.

Transient voltage suppression – protection from large noise transients to reduce down time

Integrated solution – on-chip to minimize cost and printed board-space requirement

Controlled driver slew rates – for reduced EMI and improved data transmission at 250 Kbps over longer unterminated cable runs and stub lengths

Half unit load – for up to 64 similar devices connected on a bus

Other features – open-circuit fail safe, thermal shutdown, power up/down glitch-free, and hysteresis

Compatibility – drop-in replacement of current ‘176 designs and meet or exceed EIA RS-485 and ISO/IEC 8482:1993(E) standards.

The SN75LBC184 is a cost-effective, footprint compatible, device delivering a high level of bus protection without the need of external discrete clamping diodes and costly multi-chip modules.

These devices are available in 8-pin DIP and SOIC.

Typical applications

SN75LBC184D/P