| ??? 06/30/08 10:17 Read: times |
#156309 - Very bad choice Responding to: ???'s previous message |
Ap Charles said:
I found BSS139 now, which has a VGSth= -1Vmax , is the margin enough . You need to brush up on your MOSFET basics. The BSS139 is a depletion mode device, so in your schematic it will never switch off, as you might have guessed from the negative value for VGS(th) Do you happen to know any other suitable part. Try something like the ZXM61N02 from Zetex or the Si1032 from Vishay. Rob. |
| Topic | Author | Date |
| 1.8<-->5V Level | 01/01/70 00:00 | |
| TI and NXP | 01/01/70 00:00 | |
| Any specific part number? | 01/01/70 00:00 | |
| pssibly | 01/01/70 00:00 | |
| Ok but about part | 01/01/70 00:00 | |
| Try digikey | 01/01/70 00:00 | |
| I read about some MOSFETs that switch at <1.5V | 01/01/70 00:00 | |
| why fiddle when there are dedicated chips? | 01/01/70 00:00 | |
| It depends on how many he needs, doesn't it? | 01/01/70 00:00 | |
| not really | 01/01/70 00:00 | |
| and what's price and availability in small quantit | 01/01/70 00:00 | |
| Any discrete solution | 01/01/70 00:00 | |
| a transistor ? | 01/01/70 00:00 | |
| nxp ANSWER | 01/01/70 00:00 | |
| NXP Picogates | 01/01/70 00:00 | |
| I read about some MOSFETs that switch at <1.5V | 01/01/70 00:00 | |
| Schematic here | 01/01/70 00:00 | |
| The BSS138... | 01/01/70 00:00 | |
| another part | 01/01/70 00:00 | |
| Very bad choice | 01/01/70 00:00 | |
| why, OH why ... | 01/01/70 00:00 | |
| 8 lines | 01/01/70 00:00 | |
| I listed 1, 2 and 6 line chips in a former post | 01/01/70 00:00 | |
| why not | 01/01/70 00:00 | |
| ZXM61N02 | 01/01/70 00:00 | |
BSS138 | 01/01/70 00:00 |