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|  MIL-M-38510/304C
6.5 Abbreviations, symbols, and definitions. The abbreviations, symbols, and definitions used herein are defined
in MIL-PRF-38535, MIL-HDBK-1331, and as follows:
GND ........................................... Ground zero voltage potential
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-38510 device types and may have slight physical variations in relation
to case size. The presence of this information shall 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.
Military device
Generic-industry
type
type
01
54LS51
02
54LS54
6.8 Manufacturers' designation. Manufacturers' circuits which form a part of this specification are designated with
an "X" as shown in table IV herein.
TABLE IV. Manufacturers' designations.
Circuits
Device
A
B
C
D
E
F
type
Texas
Raytheon
Fairchild
Signetics
National
Motorola Inc.
Co.
Corp.
Instruments
Semiconductor
Semiconductor
Corp.
01
X
X
X
X
X
X
02
X
X
X
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.
Custodians:
Preparing activity:
Army - CR
DLA - CC
Navy - EC
Air Force - 11
(Project 5962-1953)
DLA - CC
Review activities:
Army - HD, MI, SM
Navy - AS, CG, MC, SH, TD
Air Force - 03, 19, 99
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