THVD1429 Texas instruments

THVD1429

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THVD1429

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Описание

THVD1419 and THVD1429 are half-duplex RS-485 transceivers with integrated surge protection. Surge protection is achieved by integrating transient voltage suppressor (TVS) diodes in the standard 8-pin SOIC (D) package. This feature provides a substantial increase in reliability for better immunity to noise transients coupled to the data cable, eliminating the need for external protection components. Each of these devices operates from a single 3.3 V or 5 V supply. The devices in this family feature a wide common-mode voltage range which makes them suitable for multi-point applications over long cable runs.The THVD1419 and THVD1429 devices are available in the industry standard SOIC package for easy drop-in without any PCB changes. These devices are characterized over ambient free-air temperatures from –40°C to 125°C.

Meets or Exceeds the Requirements of the TIA/EIA-485A Standard
3 V to 5.5 V Supply Voltage
Bus I/O Protection
- ± 16 kV HBM ESD
- ± 8 kV IEC 61000-4-2 Contact Discharge
- ± 30 kV IEC 61000-4-2 Air-Gap Discharge
- ± 4 kV IEC 61000-4-4 Electrical Fast Transient
- ± 2.5 kV IEC 61000-4-5 1.2/50-µs Surge
Available in Two Speed Grades
- THVD1419: 250 kbps
- THVD1429: 20 Mbps
Extended Ambient
Temperature Range: -40°C to 125°C
Extended Operational
Common-Mode Range: ± 12 V
Receiver Hysteresis for Noise Rejection: 30 mV
Low Power Consumption
- Standby Supply Current: < 2 µA
- Current During Operation: < 3 mA
Glitch-Free Power-Up/Down for Hot Plug-in Capability
Open, Short, and Idle Bus Failsafe
1/8 Unit Load (Up to 256 Bus Nodes)
Industry Standard 8-Pin SOIC
for Drop-in Compatibility

Number of receivers	1
Number of transmitters	1
Duplex	Half
Supply voltage (nom) (V)	3.3, 5
Signaling rate (max) (MBits)	20
IEC 61000-4-2 contact (±V)	8000
Fault protection (V)	-15 to 15
Common-mode range (V)	-12 to 12
Number of nodes	256
Features	Extended common mode, IEC ESD protection, Surge protection
Isolated	No
Supply current (max) (µA)	3000
Rating	Catalog
Operating temperature range (°C)	-40 to 125