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 54FCT521 8-bit identity comparator, TTL compatible 02 54FCT521A 8-bit identity comparator, TTL compatible 03 54FCT521B 8-bit identity comparator, TTL compatible

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, 1.060" × .310 " × .200"), dual in line package S F-9 (20-lead, .540" × .300" × .100"), flat package 2 C-2 (20-terminal, .358" × .358" × .100"), square chip carrier package

Supply voltage range - - - - - - - - - - - - - - - −0.5 V dc to +7.0 V dc Input voltage range 2/ - - - - - - - - - - - - - −0.5 V dc to V_CC + 0.5 V dc Output voltage range 2/- - - - - - - - - - - - - - −0.5 V dc to V_CC + 0.5 V dc DC input diode current (I_IK) - - - - - - - - - - −20 mA DC output diode current (I_OK)- - - - - - - - - - −50 mA DC output current- - - - - - - - - - - - - - - - ±100 mA Maximum power dissipation (PD) 3/- - - - - - - - 500 mW Thermal resistance, junction-to-case (θJC) - - - See MIL-M-38510, appendix C Storage temperature range- - - - - - - - - - - - −65°C to +150°C Junction temperature (T_J)- - - - - - - - - - - - +175°C Lead temperature (soldering, 10 seconds) - - - - +300°C

Supply voltage range (V_CC) - - - - - - - - - - - - +4.5 V dc to +5.5 V dc Maximum low level input voltage (V_IL)- - - - - - 0.8 V dc Minimum high level input voltage (V_IH) - - - - - - 2.0 V dc Case operating temperature (T_C)- - - - - - - - - −55°C to +125°C

intended Use: