VL pin simplifies integration in low- & multi-voltage systems
Exar announces a family of RS-232 (EIA/TIA-232) transceivers designed to operate from 3 to 5.5V supplies. The XR32220, XR32430 and XR32431 include an adjustable low voltage logic interface that simplifies their use in low voltage and multi-voltage systems.
In many applications, RS-232 transceivers interface with UARTs, MCUs and other logic devices operating from supplies less than 3.3V. The XR32220 and XR32431 feature a low voltage logic pin that can be used to adjust the transceiver’s logic output levels and input thresholds for compatibility with lower supply voltage logic. The VL range is 1.65 to 5.5V. The adjustable low voltage interface eliminates the need for a level shifter/translator between the transceiver and UART or MCU.
The XR32220, XR32430 and XR32431 are available in RoHS compliant, green/halogen free, space-saving 4x4mm QFN (XR32220) and 5x5mm QFN (XR32430/31) packages. The XR32220, XR32430 and XR32431 are priced from $0.74 to $0.94 in 1,000 unit quantities.
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