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

TABLE I. Dynamic electrical parameters (digital microcircuits).

Specify input test conditions: VIH min, VIH max, VIL min, or VIL max
		Test method, MIL-STD-883
Parameter	Symbol	Gating	Bistable and monostable	Remarks
Propagation delay time, low to high level output	tPLH	3003	x
Propagation delay time, high low level output	tPHL	3003	x
Transition time, high to low level output	tTHL	3004	x
Transition time, low to high level output	tTLH	3004	x
Power supply current drain vs. frequency		x	x
Output pulse width (monostable only)
Terminal capacitance		3012		Where terminal capacitance is regarded as critical application
AC noise margin	VN	3013		Where noise margin is regarded as critical to the application

NOTE:Forcing conditions which should be specified (as applicable) for monostable or bistable digital microcircuits are as follows: Asynchronous input, minimum pulse width; Minimum clock pulse width; Clock levels, high and low; Clock repetition rate; Clock level, transition times; Timing relationships of input signals.