IC-tester
In a zx.pk.ru I found an interesting project: "IC tester". With chip ATMEGA8515 and 4x7-segment display. You can test logic IC's.
The disadvantage of the schematic that you can not test the high power (high power-consuming) chips. I decided to improve the schematic with the P-mosfet. Advanced version is:
Than all put into box:
It also I had to rewrite microcontroller software that work under the new schematics. New firmware allows test more chips.
If the tested microchip is bad, then the result will be as follows:
If you were trying to test in the search mode and the chip is bad, then the result will be as follows:
To test IC with 24 legs schematic must be like this:
Currently, you can check these chips:
| No. | Testing ICs | LCD indicator value |
| 1. | 7400(ЛА3), 7437(ЛА12), 74132(ТЛ3) |
00 |
| 2. | 7401(ЛА8) | 01 |
| 3. | 7402(ЛЕ1) | 02 |
| 4. | 7403(ЛА9), 7426(ЛА11), 7438(ЛА13) |
03 |
| 5. | 7404(ЛН1), 7414(ТЛ2), CD4049A(561ЛН2) |
04 |
| 6. | 7405(ЛН2), 7406(ЛН3) |
05 |
| 7. | 7407(ЛП9) | 07 |
| 8. | 7408(ЛИ1) | 08 |
| 9. | 7409(ЛИ2) | 09 |
| 10. | 7410(ЛА4) | 10 |
| 11. | 7411(ЛИ3) | 11 |
| 12. | (531ЛА17) | l17 |
| 13. | 7420(ЛА1), 7440(ЛА6) |
20 |
| 14. | 7421(ЛИ6) | 21 |
| 15. | 7422(ЛА7) | 22 |
| 16. | 7427(ЛЕ4) | 27 |
| 17. | 7430(ЛА2) | 30 |
| 18. | 7432(ЛЛ1) | 32 |
| 19. | 7433(ЛЕ11) | 33 |
| 20. | 7472(ТВ1) | 72 |
| 21. | 7474(ТМ2) | 74 |
| 22. | 7486(ЛП5) | 86 |
| 23. | 7490(ИЕ2) | 90 |
| 24. | 7493(ИЕ5) | 93 |
| 25. | 7495(ИР1) | 95 |
| 26. | 74107(ТВ6) | 107 |
| 27. | 74125(ЛП8) | 125 |
| 28. | 74138(ИД7) | 138 |
| 29. | 74139(ИД14) | 139 |
| 30. | 74151(КП7) | 151 |
| 31. | 74153(КП2) | 153 |
| 32. | 74155(ИД4) | 155 |
| 33. | 74155(ИД5) | 156 |
| 34. | 74157(КП16) | 157 |
| 35. | 74160(ИЕ9) | 160 |
| 36. | 74161(ИЕ10) | 161 |
| 37. | 74165(ИР9) | 165 |
| 38. | 74166(ИР10) | 166 |
| 39. | 74169(ИЕ17) | 169 |
| 40. | 74174(TM9) | 174 |
| 41. | 74175(TM8) | 175 |
| 42. | 74193(ИЕ7) | 193 |
| 43. | 74240(АП3) | 240 |
| 44. | 74244(АП5) | 244 |
| 45. | 74245(АП6) | 245 |
| 46. | 74251(КП15) | 251 |
| 47. | 74253(КП12) | 253 |
| 48. | 74257(КП11) | 257 |
| 49. | 74258(КП14) | 258 |
| 50. | 74273(ИР35) | 273 |
| 51. | 74295(ИР16) | 295 |
| 52. | 74298(КП13) | 298 |
| 53. | 74366(ЛН6) | 366 |
| 54. | 74367(ЛП11) | 367 |
| 55. | 74373(ИР22) | 373 |
| 56. | 74374(ИР23) | 374 |
| 57. | 74377(ИР27) | 377 |
| 58. | 74393(ИЕ19) | 393 |
| 59. | 74541(АП13) | 541 |
| 60. | 74573(ИР33) | 573 |
| 61. | 74574(ИР37) | 574 |
| 62. | 744040 | u40 |
| 63. | 75452(ЛА18) | 452 |
| 64. | CD4502(561ЛН1) | C02 |
| 65. | CD4516(561ИЕ11) | C16 |
| 66. | CD4520(561ИЕ10) | C20 |
| 67. | CD4066(561КТ3) | C66 |
| 68. | i8216(589АП16) | i16 |
| 69. | i8216(589АП26) | i26 |
| 70. | i8282(580ИР82) | i82 |
| 71. | i8283(580ИР83) | i83 |
| 72. | i8286(580ВА86) | i86 |
| 73. | i8287(580ВА87) | i87 |
| 74. | 74150(КП1) | 150 |
| 75. | 74154(ИД3) | 154 |
| 76. | 74198(ИР13) | 198 |
Next, I will try to do static and dynamic IC testing.
Firmwares:
Last modified: 2018-07-01 22:51:14