MIL-HDBK-1331 Parameters To Be Controlled For The Specification Of Microcircuits, Handbook ForThis handbook describes the parameters required as a minimum for the specification of microcircuits. Parameters, rather than circuits, are considered because circuits vary with the manufacturers involved. Further, circuit designs should be subject to change if improvement results as long as the affected designs are compatible and fully interchangeable. The specific objectives of this document are as follows: a. To provide the minimum parameters that should be specified to ensure adequate evaluation of circuit design and performance. b. To provide maximum commonality of parameters for purpose of test and measurement, within and between major classes of microcircuit types and to allow the recognition of interface problems between types of microcircuits. c. To provide standard abbreviations, definitions and symbols pertinent to the specification of microcircuits. d. To promote maximum interchangeability and compatibility between microcircuits types.

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MIL-HDBK-1331A

APPENDIX A

A.4.2.9 High-level node input current (IINH). The current flowing into * an input node with a specified high-level voltage applied to that node.

A.4.2.10 Low-level node input current (IINL). The current flowing into * an input node with a specified low-level voltage applied to that node.

A.4.2.11 High-level output current (IOH). The current flowing into * the output at a specified high-level output voltage.

A.4.2.12 Low-level output current (IOL). The current flowing into * the output at a specified low-level output voltage.

A.4.2.13 Output short-circuit current (IOS). The current which flows into* an output when the output is short circuited to ground with the specified conditions applied to establish the output logic level farthest from ground potential.

A.4.2.14 Input signals timing relationships (ITR) (synchronous, asynchronous, and clock). The time relationship which must exist between input signals as a necessary condition to ensure compliance with the truth table. Time must be specified from positive- or negative-going edges of the clock pulse.

A.4.2.15 Propagation delay time, high-to-low-level output (tPHL). The time between the specified reference points on the input and output voltage waveforms with the specified output changing from the defined high level to the defined low level. The reference points on both the input and output waveforms are the same value which is midway between the maximum low-level input voltage (VIL max) and the minimum high-level input voltage (VIH min).

A.4.2.16 Propagation delay time, low-to-high-level output (tPLH). The time between the specified reference points on the input and output voltage waveforms with the specified output changing from the defined low level to the defined high level. The reference points on both the input and output waveforms are the same value which is midway between the maximum low-level input voltage (VIL max) and the minimum high-level input voltage (VIH min).

A.4.2.17 Transition time, high-to-low-level output (tTHL). The time between the specified high-level voltage and a specified low-level voltage on the output voltage waveform with the specified output changing from the defined high level to the defined low level.

A.4.2.18 Transition time, low-to-high-level output (tTLH). The time between the specified low-level voltage and a specified high-level voltage on the output voltage waveform with the specified output changing from the defined low level to the defined high level.

*Current flowing out of a terminal may be considered as a negative quantity.