scope:

This drawing describes device requirements for class B microcircuits in accordance with 1.2.1 of MIL-STD-883, "Provisions for the use of MIL-STD-883 in conjunction with compliant non-JAN devices".

The complete part number shall be as shown in the following example:

The device type shall identify the circuit function as follows:

Device type Generic number Circuit 01 54LS390 Dual decade counter with A and B inputs

The case outlines shall be as designated in MIL-M-38510, appendix C and as follows:

Outline letter Case outline E D-2 (16-lead, ¼" × ⅞"), dual-in-line package F F-5 (16-lead, ¼" × ⅜"), flat package

Supply voltage range - - - - - - - - - - - - - - - - - - - −0.5 V dc to +7.0 V dc Input voltage range- - - - - - - - - - - - - - - - - - - - −1.5 V dc at −18 mA to 5.5 V dc Storage temperature- - - - - - - - - - - - - - - - - - - - −65°C to +150°C Maximum power dissipation (P_D) per device 1/ - - - - - - - 143 mW Lead temperature (soldering, 10 seconds) - - - - - - - - - +300°C Thermal resistance, junction-to-case (θ_JC): Cases E and F- - - - - - - - - - - - - - - - - - - - - - See MIL-M-38510, appendix C Junction temperature (T_J)- - - - - - - - - - - - - - - - - +175°C

Supply voltage (V_CC) - - - - - - - - - - - - - - - - - - - 4.5 V dc minimum to 5.5 V dc maximum Minimum high level input voltage (V_IH) - - - - - - - - - - 2.0 V dc Maximum low level input voltage (V_IL)- - - - - - - - - - - 0.7 V dc Case operating temperature range (T_C)- - - - - - - - - - - −55°C to +125°C Width of input count pulse, t_p(IN): Input A- - - - - - - - - - - - - - - - - - - - - - - - - 20 ns minimum Input B- - - - - - - - - - - - - - - - - - - - - - - - - 40 ns minimum Width of CLEAR pulse - - - - - - - - - - - - - - - - - - - 20 ns minimum Input clock frequency, f_clock: Input A- - - - - - - - - - - - - - - - - - - - - - - - - 0 to 25 MHz Input B- - - - - - - - - - - - - - - - - - - - - - - - - 0 to 12.5 MHz

intended Use: