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 types shall identify the circuit function as follows:

Device type Generic number Circuit function 01 54LS242 Quadruple bus transceivers with three-state outputs inverted 02 54LS243 Quadruple bus transceivers with three-state outputs non-inverted

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

Outline letter Case outline C D-1 (14-lead ¼" × ¾"), dual-in-line package D F-2 (14-lead, ¼" × ⅜"), flat-package 2 C-2 (20-terminal .350" × .350"), square chip carrier 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 range - - - - - - - - - - - - −65°C to +150°C Maximum power dissipation (P_D) 1/ - - - - - - - - 297 mW Lead temperature (soldering, 10 seconds) - - - - - +300°C Thermal resistance, junction-to-case (θ_JC) Cases C and D - - - - - - - - - - - - - - - - - - See MIL-M-38510, appendix C Case 2 - - - - - - - - - - - - - - - - - - - - - - 80°C/W 2/ 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

intended Use: