scope:

This drawing describes the 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 54ALS645A ALS octal bus transceivers 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 R D-8 (20 lead, ¼" × 1 1/16"), dual-in-line package S F-9 (20 lead, ¼" × ½"), 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- - - - - - - - - - - - - - - - - - −65°C to +150°C Maximum power dissipation (P_D) per device 1/ - - - - - 346.5 mW Lead temperature (soldering, 10 seconds) - - - - - - - +300°C Thermal resistance, junction-to-case (θ_JC): Cases R and S- - - - - - - - - - - - - - - - - - - - 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 Normalized fanout (each input) 3/- - - - - - - - - - - 20 maximum

intended Use: