MIL-M-38510-12 Microcircuits, Digital, Bipolar, Ttl, Monostable Multivibrators, Monolithic SiliconThis specification covers the detail requirements for monolithic silicon, bipolar, TTL, monostable multivibrators 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 For this product, the requirements of MIL-M-38510 have been superseded by MIL-PRF-38535, see 6.3.

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MIL-M-38510/12J

Description of device types 01, 02, and 06

These monostables are designed to provide the system designer with complete flexibility in controlling the pulse width, either to lengthen the pulse by retriggering, or to shorten by clearing. Device types 01, 02 and 06 have an internal timing resistor which allows the circuit to be operated with only an external capacitor, if so desired. Applications requiring more precise pulse widths and not requiring the clear feature can best be satisfied with device types 01 and 06.

The output pulse is primarily a function of the external capacitor and resistor. For CX > 1,000 pF, the output pulse width (tW) is defined as:

tW (device type 01) = RX CX Ln2

tW (device type 02) = 0.32 RX CX (1 + (0.7/RX))

where RX is in kn (either internal or external timing resistor) CX is in pF

tW is in ns

For pulse widths when CX ≤ 1,000 pF, the following circuit for timing component connections is recommended.

These circuits are fully compatible with most TTL or DTL families. Inputs are diode-clamped to minimize reflections due to transmission-line effects, which simplifies design. Typical power dissipation per one shot is 115 milliwatts; typical average propagation delay time to the Q output is 21 nanoseconds.

FIGURE 3. Device descriptions.