MIL-M-38510-79 Microcircuits, Digital, Bipolar, Schottky Ttl, Data Selectors/Multiplexers With Three-State Outputs, Monolithic SiliconThis specification covers the detail requirements for monolithic silicon, Schottky TTL, data selectors /multiplexers three-state microcircuits. Two product assurance classes and a choice of case outlines and lead finishes are provided and are reflected in the complete part number. For this product, the requirements of MIL-M-38510 have been superseded by MIL-PRF-38535, see 6.4.

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MIL-M-38510/79D

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.

tZH ...................................................... Output enable time (of a three-state output) to high level.  The time

between the specified reference points on the input and output voltage

waveforms with the three-state output changing from a high-impedance

(off) state to the defined high level. tZL....................................................... Output enable time (of a three-state output) to low level.  The time

between the specified reference points on the input and output voltage waveforms with the three-state output changing from a high-impedance

(off) state to the defined low level.

tHZ ...................................................... Output disable time (of a three-state output) from high level.  The time between the specified reference points on the input and output voltage waveforms with the three-state output changing from the defined high level impedance (off) state.

tLZ....................................................... Output disable time (of a three-state output) from low level.  The time between the specified reference points on the input and output voltage waveforms with the three state output changing from the defined low level to a high impedance (off) state.

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  8ubstitutability.  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.

6.8  Manufacturers' designations.  Manufacturers' circuits included in this specification are designated as shown in table IV.

6.9  Changes from previous issue.  Marginal notations are not used in this revision to identify changes with respect to the previous issue, due to the extent of the changes.

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