DATA SHEET
THVD1520 10 Mbps RS-485 Transceiver With ±8-kV IEC ESD Protection
1 Features
- Meets or exceeds the requirements of the TIA/EIA-485A standard
- 4.5-V to 5.5-V supply voltage
- 10 Mbps, Half-Duplex RS-422/RS-485
- Bus I/O protection
- ± 16-kV HBM ESD
- ± 8-kV IEC 61000-4-2 contact discharge
- ± 8-kV IEC 61000-4-2 air gap discharge
- ± 4-kV IEC 61000-4-4 fast transient burst
- Extended industrial temperature range: -40°C to 125°C
- Large receiver hysteresis for noise rejection
- Low power consumption
- Low standby supply current: < 1 µA
- Quiescent during operation: < 840 µA
- 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)
3 Description
THVD1520 is a robust half-duplex RS-485 transceiver for industrial applications. The bus pins are immune to high levels of IEC contact discharge ESD events eliminating the need of additional system-level protection components.
The device operates from a single 5-V supply. The wide common-mode voltage range and low input leakage on bus pins make THVD1520 suitable for multi-point applications over long cable runs.
THVD1520 is available in industry standard 8-pin SOIC package for drop-in compatibility. The device is characterized for ambient temperatures from –40°C to 125°C.
Device Information(1)
| PART NUMBER | PACKAGE | BODY SIZE (NOM) |
|---|---|---|
| THVD1520 | SOIC (8) | 4.90 mm × 3.91 mm |
- For all available packages, see the orderable addendum at the end of the data sheet.
Device Images
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Simplified Schematic
4 Revision History
| DATE | REVISION | NOTES |
|---|---|---|
| October 2019 | * | Initial release. |
5 Pin Configuration and Functions
D Package
8-Pin SOIC
Top View
Pin Functions
| PIN | I/O | DESCRIPTION | |
|---|---|---|---|
| NAME | NO. | ||
| R | 1 | Digital output | Receive data output |
| RE | 2 | Digital input | Receiver enable, active low (internal 5-MΩ pull-up) |
| DE | 3 | Digital input | Driver enable, active high (internal 5-MΩ pull-down) |
| D | 4 | Digital input | Driver data input (internal 5-MΩ pull-up) |
| GND | 5 | Ground | Device ground |
| A | 6 | Bus input/output | Bus I/O port, A (complementary to B) |
| B | 7 | Bus input/output | Bus I/O port, B (complementary to A) |
| VCC | 8 | Power | 5-V supply |
