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 8251A Programmable communication interface 02 8251A Programmable communication interface

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

Outline letter Case outline X D-10 (28-lead, ½" × 1 ⅜"), dual-in-line package 3 C-4 (28-terminal, .450" × .450"), square chip carrier package

Supply voltage range - - - - - - - - - - - - - - - - - - - - −0.5 V dc to +7.0 V dc Input voltage range - - - - - - - - - - - - - - - - - - - - - −0.5 V dc to +7.0 V dc Storage temperature range - - - - - - - - - - - - - - - - - - −65°C to +150°C Maximum power dissipation (P_D) - - - - - - - - - - - - - - - - 1.0 W Lead temperature (soldering, 5 seconds)- - - - - - - - - - - - +270°C Thermal resistance, junction-to-case (θ_JC): Case X 1/ - - - - - - - - - - - - - - - - - - - - - - - - - 15°C/W Case 3 1/ - - - - - - - - - - - - - - - - - - - - - - - - - 60°C/W Junction temperature (T_J)- - - - - - - - - - - - - - - - - - - +150°C V_CC with respect to V_SS - - - - - - - - - - - - - - - - - - - - -−0.5 V dc to +7.0 V dc All signal voltages with respect to V_SS- - - - - - - - - - - - - −0.5 V dc to +7.0 V dc

Supply voltage (V_CC): Device type 01- - - - - - - - - - - - - - - 4.5 V dc to 5.5 V dc Device type 02- - - - - - - - - - - - - - - 4.75 V dc to 5.25 V dc Minimum high level input voltage (V_IH)- - - - 2.2 V dc Maximum high level input voltage (V_IH)- - - - V_CC Maximum low level input voltage (V_IL) - - - - 0.8 V dc Minimum low level input voltage (V_IL) - - - - −0.5 V dc Case operating temperature range (T_C) - - - - −55°C to +125°C

intended Use: