[Chengdu Sino Microdelectronics System Co., Ltd]

General Description
The HWD481, HWD483, HWD485, HWD487–HWD491, and HWD1487 are low-power transceivers for RS-485 and RS-422 communication. Each part contains one driver and one receiver. The HWD483, HWD487, HWD488, and HWD489 feature reduced slew-rate drivers that minimize EMI and reduce reflections caused by improperly terminated cables, thus allowing error-free data transmission up to 250kbps. The driver slew rates of the HWD481, HWD485, HWD490, HWD491, and HWD1487 are not limited, allowing them to transmit up to 2.5Mbps.

__Next Generation Device Features
♦ For Fault-Tolerant Applications
HWD3430: ±80V Fault-Protected, Fail-Safe, 1/4 Unit Load, +3.3V, RS-485 Transceiver
HWD3440E–HWD3444E: ±15kV ESD-Protected, ±60V Fault-Protected, 10Mbps, Fail-Safe, RS-485/J1708 Transceivers
♦ For Space-Constrained Applications
HWD3460–HWD3464: +5V, Fail-Safe, 20Mbps, Profibus RS-485/RS-422 Transceivers HWD3362: +3.3V, High-Speed, RS-485/RS-422 Transceiver in a SOT23 Package  HWD3280E–HWD3284E: ±15kV ESD-Protected, 52Mbps, +3V to +5.5V, SOT23, RS-485/RS-422, True Fail-Safe Receivers HWD3293/HWD3294/HWD3295: 20Mbps, +3.3V, SOT23, RS-855/RS-422 Transmitters
♦ For Multiple Transceiver Applications
HWD3030E–HWD3033E: ±15kV ESD-Protected, +3.3V, Quad RS-422 Transmitters
♦ For Fail-Safe Applications
HWD3080–HWD3089: Fail-Safe, High-Speed (10Mbps), Slew-Rate-Limited RS-485/RS-422 Transceivers
♦ For Low-Voltage Applications
HWD3483E/HWD3485E/HWD3486E/HWD3488E/HWD3490E/HWD3491E: +3.3V Powered, ±15kV ESD-Protected, 12Mbps, Slew-Rate-Limited, True RS-485/RS-422 Transceivers

Applications
    Low-Power RS-485 Transceivers
    Low-Power RS-422 Transceivers
    Level Translators
    Transceivers for EMI-Sensitive Applications
    Industrial-Control Local Area Networks