SEMICONDUCTOR
CROSS
REFERENCE
Competitive
Part Number
8550001CC
8550001DC
91SS12-2
92SS12-2
9665DC
9665DM
9665PC
9666DC
9666DM
9666PC
9667DC
9667DMQB
9667PC
9668DC
9668DM
9668PC
Mfg.
Code
DESC
DESC
MICR
MICR
FSC
FSC
FSC
FSC
FSC
FSC
FSC
FSC
FSC
FSC
FSC
FSC
Suggested Allegro
Replacement
Notes
UHD508-883
*91
UHC508-883
*91
UGN3503U
≈
UGN3503U
≈
ULN2001R
*91
ULS2001R883 *91
ULN2001A
*95
ULN2002R
*91
ULS2002R883 *91
ULN2002A
*91
ULN2003R
*91
ULS2003R883 *93
ULN2003A
ULN2004R
*91
ULS2004R883 *93
ULN2004A
* No longer manufactured by Allegro with date of Allegro
discontinuance — listed for reference only.
≈
Functional equivalent only. Usually improved performance
but not necessarily pin compatible.
# European registration; manufactured by various companies
including ITT, Philips, SGS/ATES, Siemens, Thomson-CSF,
AEG-Telefunken, Valvo, & others.
† Ordering part number is SMDP Drawing number as listed.
Commercial part number is shown for reference only.
Allegro MicroSystems, Inc. reserves the right to make, from time to
time, such departures from the detail specifications as may be required
to permit improvements in the design of its products.
The information included herein is believed to be accurate and
reliable. However, Allegro MicroSystems, Inc. assumes no responsibil-
ity for its use; nor for any infringements of patents or other rights of
third parties which may result from its use.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000