CDBE datasheet, CDBE pdf, CDBE data sheet, datasheet, data sheet, pdf, Texas Instruments, CMOS Differential 4-Channel Analog. CDBE ti CDB, CMOS Differential 4-Channel Analog Multiplexer/ demultiplexer With Logic-level Conversion Data sheet acquired from Harris. CDBE from TEXAS INSTRUMENTS >> Specification: Analog Multiplexer /Demultiplexer IC, Dual, Technical Datasheet: CDBE Datasheet.
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For example, it shows that with Vdd at 10v you need at least 7v for a high. This resistance adds to the 1 k external resistance and causes the voltage drop you saw. The DMM measurement reads the value 0. Please let cd405be know if something about this seems incorrect or is I just flat out misinterpreted the use of this chip.
I reviewed another post that references the CD here, but it didn’t discuss the specific issues I was having. That is actually where I would expect it to be. It never occurred to me that logic high might be relative to Vdd. Sign up or log in Sign up using Google.
View cd4052be datasheet:
Sign up using Email and Password. The control signals will be inverted from the base input to the collector output connection.
While R1 reads 0. Dave Guenther 1 Post as a guest Name.
Upon reading the data sheet this chip seems straight forward, but I’m having the hardest time hooking up the CD Then send 5v signals into the base of each transistor with a series base resistorand the emitter is connected to GND.
Email Required, but never shown. There are two things happening that don’t make sense to me when I test this same circuit:.
I have hooked up the following circuit just to test the analog switching capability: It is most likely implemented with pairs of back to back MOSFETs as the switches, and they have a significant on resistance dataasheet ohms or more.
There are two things happening that don’t make sense to me when I test this same circuit: Also see the switching limitations listed by jms.
CDBE Datasheet(PDF) – Harris Corporation
Why is there a voltage difference? Sign up using Facebook. If you need to switch datashret circuit with only 5v logic you can use an NPN transistor for each input, with a resistor on each collector pulled up to the Vdd level. So at 12v Vdd you may need about a 9v minimum. Here is a link to the datasheet.
The R2, R3 and R4 all read 0v. I dont know why, maybe it fried? It seems like it should just be similar to an open wire between the two. I have hooked up the following circuit just to test the analog switching capability:.
CMOS Differential 4-Channel Analog Multiplexer/Demultiplexer With Logic-Level Conversion