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 01 54ALS242B Quadruple bus transceiver with three state outputs 02 54ALS243A Quadruple bus transceiver with three state outputs

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, .785" × .310" × .200"), dual-in-line package D F-2 (14-lead, .390" × .260 × .085"), flat package 2 C-2 (20-terminal, .358" × .358" × .100"), square chip carrier package

Supply voltage range - - - - - - - - - - - - −0.5 V dc minimum to +7.0 V dc maximum Input voltage range (All inputs)- - - - - - - - −1.2 V dc at −18 mA to +7.0 V dc Input voltage range (I/O ports) - - - - - - - - −1.2 V dc at −18 mA to +5.5 V dc Storage temperature range - - - - - - - - - - - −65°C to +150°C Maximum power dissipation (P_D)1/ Device 01 - - - - - - - - - - - - - - - - - - 148.5 mW Device 02 - - - - - - - - - - - - - - - - - - 203.5 mW Lead temperature (soldering, 10 seconds)- - - - +300°C Thermal resistance, junction to case (A_JC)- - - 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): V_IL = + 125°C - - - - - - - - - - - - - - - - - 0.7 V dc V_IL = + 25°C - - - - - - - - - - - - - - - - - - 0.8 V dc V_IL = − 55°C - - - - - - - - - - - - - - - - - - 0.8 V dc Normalized fanout (each input) 2/- - - - - - - - - 20 maximum Case operating temperature range (T_C) - - - - - - −55°C to +125°C

intended Use: