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|  MIL-M-38510/81D
6.5 Abbreviations, symbols and definitions. The abbreviations, symbols, and definitions used herein are defined
in MIL-PRF-38535 and MIL-HDBK-1331, and as follows:
GND .................................................. Electrical ground (common terminal)
IIN ...................................................... Current flowing into an input terminal.
VIN ..................................................... Voltage level at an input terminal.
6.6 Logistic support. Lead materials and finishes (see 3.4) are interchangeable. Unless otherwise specified,
microcircuits acquired for Government logistic support will be acquired to device class B (see 1.2.2), lead material
and finish A (see 3.4). Longer length leads and lead forming shall not affect the part number.
6.7 Substitutability. The cross-reference information below is presented for the convenience of users.
Microcircuits covered by this specification will functionally replace the listed generic industry type. Generic industry
microcircuit types may not have equivalent operational performance characteristics across military temperature
ranges or reliability factors equivalent to MIL-M-35810 device types and may have slight physical variations in relation
to case size. The presence of this information should not be deemed as permitting substitution of generic industry
types for MIL-M-38510 types or as a waiver of any of the provisions of MIL-PRF-38535.
Commercial type
Device type
01
54S140
6.8 Manufacturers' designations. Manufacturers' circuits included in this specification are designated as shown in
table IV.
Table IV. Manufacturers' designations
Texas
Signetics
Fairchild
Instruments
Corporation
Semiconductor
Device
Circuits
Type
A
B
C
01
X
X
X
6.9 Changes from previous issue. Asterisks are not used in this revision to identify changes with respect to the
previous issue, due to the extensiveness of the changes.
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