Keithley 6517 Service Manual page 103

Table 7-4
Model 6517A digital board, parts list (cont.)
Circuit designation
U612
U614
U615,630
U616
U621
U622
U623
U628
U629,642
U631
U634
U635,636
U639
U640
U641
U643
U652
U653
VR602
W607-610
W607-610
Description
IC, 350MA SATURATED SINK DRIVER UDN-2596A
IC, OCT BFR/LINE DRIVE, 74HCT244 (SOLIC)
IC, QUAD 2 IN NOR, 74HCT02 (SOIC)
IC, QUAD 2 INPUT OR, 74HCT32 (SOIC)
IC, OCTAL INTERFACE BUS, 75160 (SOLIC)
IC, GPIB ADAPTER, 9914A (PLCC)
IC, OCTAL INTER BUS TRANS, 75161 (SOLIC)
IC, VOLT COMPARATOR, LM393D (SOIC)
IC, +5V VOLTAGE REGULATOR, LM2940CT
IC, 16-BIT MICRO, MC68302FC
IC, SERIAL E EPROM, X24164 (8-PIN DIP)
IC, 125KX8 STAT CMOS RAM, HM628128LFP-10
IC, MICROMANAGER, DS12365-10 (SOLIC)
IC, 64X8 CMOS SRAM MK41756N00
IC, +5V RS-232 TRANSCEIVER, MAX202 (SOIC)
IC, VOLT CONVERT, LT 1026
IC, PROG, VOLT, REG, ICL7664
IC, PROG, VOLT, REG, ICL7663
DIODE, ZENER 4.7V, IN4732A (DO-41)
CONN, 3 PIN
CONNECTOR, JUMPER
Replaceable Parts
Keithley part
number
IC-578
IC-651
IC-809
IC-808
IC-646
LSI-123
IC-647
IC-775
IC-576
LSI-144
IC-885
LSI-133-100
IC-884
IC-946
IC-952
IC-959
IC-883
IC-882
DZ-67
CS-339-3
CS-476
7-11