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 54ALS251 1 of 8 data selector/multiplexer with 3-state outputs

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

Outline letter Case outline E D-2 (16-lead, .840" × .310" × .200"), dual-in-line package F F-5 (16-lead, .440" × .285" × .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 - - - - - - - - - - - - - - - - - −1.5 V dc at −18 mA to +7.0 V dc Storage temperature- - - - - - - - - - - - - - - - - - −65°C to +150°C Maximum power dissipation (P_D) per device 1/ 77 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 (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 Case operating temperature range (T_C) - - - - - - - - −55°C to +125°C

intended Use: