MIL-M-38510/12J
Description of device type 04
These retriggerable monostables multivibrator provides an output pulse whose duration and accuracy is a function of external timing components. It is designed to allow a choice of triggering either the leading or trailing edge of the pulse, thus providing the system designer with complete flexibility in controlling the pulse width.
The output pulse width is primarily a function of the external capacitor and external resistor. For CX � 1,000 pF, the output pulse width (tW) is defined as:
tW = 0.32 RX CX (1 + (0.7/RX))
where RX is in kn (see note 3) CX is in pF (see note 2) tW is in ns
For pulse widths when CX < 1,000 pF, the following circuit for timing component connections is recommended.
Circuit A. This circuit is for use with low leakage electrolytic capacitors. This configuration can be used predictability only if the forward capacitor leakage at 5.0 volts is less than 3 µA, and the reverse capacitor leakage at 1.0 volt is less than 5 µA over the operational temperature range, and note 1 below is satisfied.
Circuit B. This circuit is for use with high reverse leakage current electrolytic capacitors. The diode in this configuration prevents high reverse leakage currents through the capacitor by preventing a reverse voltage across the capacitor.
tW � 0.3 RX
Any silicon switching diode such as 1N3064, etc.
R < 0.6 RX (maximum) (see recommended operating conditions for RX maximum).
FIGURE 3. Device descriptions - Continued.
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