https://devzone.nordicsemi.com/f/nordic-q-a/83833/nrf21540-ble-timingWe are in the early phase of architecting a product that uses BLE and a proprietary RF protocol using the nRF52840 and are considering the addition of the nRF21540. In sifting through DevZone, it looks like there are reports of a TX/RX switch-timing issueen-USTelligent Community 13Fri, 21 Jan 2022 18:24:11 GMThttps://devzone.nordicsemi.com/thread/349024?ContentTypeID=1Fri, 21 Jan 2022 18:24:11 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7b94dc62-53d3-474b-a99c-5d30805fe606Jim McInttyre<p>Thank-you for looking in to this - I&#39;ll be interested to see what the latest update is...</p> <p></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/348977?ContentTypeID=1Fri, 21 Jan 2022 14:40:55 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b6e28793-c08d-462a-83be-17cf983903f6SwRa<p>Hi,</p> <p>I believe the issue is still persistent. I will however confirm it internally and get back to you.</p> [quote user=""]Also, is there a EVK or DVK that includes both these chips on a single PCB?[/quote] <p>Yes there is. The nrf21540 DK has both the nrf21540 chip and the nrf52840 SoC on it.&nbsp;</p> <p>Best Regards,</p> <p>Swathy</p><div style="clear:both;"></div>