ChipMaster Compact Digital IC Tester
Copyright
1992-2009 ABI Electronics Limited
Page 34
MISCELLANEOUS
1005
1006
1489
384
491
492
5452
54563
54564
58167
6595
7641
8131
8136
8160
8230
8252
8262
8277
8641
9014
9301
9309
9312
9314
9324
9328
9338
9347
9348
9614
9640
9641
9901
9902 (10)
9995 (11)
43.6.
notes on TTL ICs
Note 1:
The 7450 and 7453 ICs have non-TTL compatible expander
inputs that are often not used in designs. These inputs are not tested.
Note 2:
The 74LS51 and 74LS54 have differing pin connections and
functions from the standard 7451 and 7454 ICs. The test assumes that
the 'LS version is being tested - to test the standard version use the
numbers 7450 and 7453 respectively. In addition, the 74L86 IC has a
different pin out to the standard 7486 ICs, but it can be tested using the
74386 test.
Note 3:
When testing these ICs the warning "EXT" will appear on the
LCD display. This means that external timing components are required
to test the IC. The timing components should be inserted into the socket
as given in following table:
IC
COMPONENTS
74122/74422
2.2
µ
F between pins 24 and 26 of the ZIF socket, +ve to pin 26
74123/74423
2.2
µ
F between pins 18 and 19 of the ZIF socket, +ve to pin 19
2.2
µ
F between pins 27 and 26 of the ZIF socket, +ve to pin 27
4528/4538/4098
0.22
µ
F between pins 13 and 14 of the ZIF socket.
0.22
µ
F between pins 27 and 26 of the ZIF socket.
43.7.
notes on CMOS ICs
Note 4:
Certain differences exist between manufacturers parts with this
IC which may cause a FAIL result with ICs other than (Motorola)
MC14585 ICs. Consult the data sheets for full details.
