Texas Instruments Inc. has designed its latest isolated half-duplex differential line transceiver with an integrated transformer driver.
The ISO1176T provides the primary voltage for an isolation transformer and, in conjunction with an external transformer, rectifier and regulator, provides what TI says is the smallest isolated signal and power system design with highest efficiency and lowest electromagnetic interference (EMI). Applications include Profibus systems, factory and building automation, networked sensors, motor/motion control, HVAC, and networked security stations.
- Capacitive isolation technique uses SiO2 as isolation dielectric to increase reliability
- Provides 2500 Vrms of isolation between the line transceiver and logic-level interface
- Signaling rates up to 40 Mbps
- Supports 160 nodes
- 16-pin SOIC package
- 4000Vpeak Isolation, 560Vpeak VIORM
- Meets or Exceeds the Requirements of EN 50170 and TIA/EIA RS-485
- Differential Output exceeds 2.1V (54Ω Load)
- Low Bus Capacitance 10pF (MAX)
- 50kV/µs Typical Transient Immunity
- UL 1577, IEC 60747-5-2 (VDE 0884, Rev. 2) Approvals Pending
- Fail-safe Receiver for Bus Open, Short, or Idle
Pricing: $3.30 in quantities of 1,000.
Availability: The ISO1176T is available now in a 16-pin SOIC package. Two other isolated full-duplex RS-485 transceivers with transformer drivers, one operating at 5 V and other operating at 3.3 V, will be available by end of 1Q11.
Datasheet: Click here.