AnsweredAssumed Answered

HMC321A control signal Vih_min value

Question asked by tnjames on Aug 30, 2016
Latest reply on Sep 27, 2016 by s.ilke

The preliminary HMC321A SP8T RF switch datasheet states that the control interface uses a "positive control voltage of
0/+5 volts" but no further information is given.  Looking at the datasheet for the existing HMC321 part the control voltages table suggests that any input voltage above 2.0V will be interpreted as a logic 1, which means I should be able to control the switch using 2.5 or 3.3 V CMOS levels from an FPGA reliably and with plenty of margin.  Assuming that the HMC321A will ultimately replace the existing HMC321 part can you confirm that the HMC321A part will also work correctly at these levels?

 

Thanks in advance

 

Tim

Outcomes