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 function 01 54LS642 Octal bus transceivers with inverting, open collector outputs

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

Outline letter Case outline R D-8 (20-lead, 1.060" × .310 × .200"), dual-in-line package S F-9 (20-lead, .540" × .300" × .100"), flat package 2 C-2 (20-terminal, .358" × .358" × .100"), square chip carrier package

Supply voltage range V_CC - - - - - - - - - - - - - - - −0.5 V dc to +7.0 V dc DC input voltage: All inputs and I/O ports - - - - - −1.5 V dc at −18 mA to +7.0 V dc Storage temperature range - - - - - - - - - - - - - - −65°C to +150°C Maximum power dissipation (P_D) 1/ - - - - - - - - - - 522.5 mW Lead temperature (soldering, 10 seconds) - - - - - - - +300°C Thermal resistance, junction-to-case (θ_JC) - - - - - - See MIL-M-38510, appendix C Junction temperature (T_J) - - - - - - - - - - - - - - +175°C

Supply voltage range (V_CC) - - - - - - - - - - - - - - +4.5 V dc to +5.5 V dc Minimum high-level input voltage (V_IH) - - - - - - - - 2.0 V dc Maximum low-level input voltage (V_IL) - - - - - - - - 0.5 V dc Maximum high-level output voltage (V_OH)- - - - - - - - 5.5 V dc Maximum input clamp current (I_IC) - - - - - - - - - - −18 mA Maximum low-level output current (I_OL) - - - - - - - - +12 mA Case operating temperature range (T_C) - - - - - - - - −55°C to +125°C

intended Use: