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 function 01 54AS646 Octal bus transceiver and register 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 K F-6 (24-lead, .640" × .420" × .090"), flat package L D-9 (24-lead, 1.280" × .310" × .200"), dual-in-line package 3 C-4 (28-terminal, .460" × 460" × .100"), square chip carrier package

Supply voltage (V_CC) - - - - - - - - - - - - - - - - - −0.5 V dc to +7.0 V dc Input voltage: Control inputs - - - - - - - - - - - - - - - - - - - −1.2 V at −18 mA to +7.0 V dc I/O ports - - - - - - - - - - - - - - - - - - - - - −1.2 V at −18 mA to +5.5 V dc Storage temperature range - - - - - - - - - - - - - - −65°C to +150°C Maximum power dissipation (P_D) 1/ - - - - - - - - - - 1.16 W 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 range (V_CC) - - - - - - - - - - - - - - 4.5 V dc to 5.5 V dc Minimum high level input voltage (V_IH) - - - - - - - - 2.0 V Maximum low level input voltage (V_IL) - - - - - - - - 0.8 V case operating temperature range (T_C) - - - - - - - - −55°C to +125°C Width of clock pulse (t_w) - - - - - - - - - - - - - - 7 ns minimum Setup time before clock (t_s) - - - - - - - - - - - - - 7 ns minimum Hold time after clock (t_H) - - - - - - - - - - - - - - 0 ns minimum Maximum clock frequency (f_MAX) - - - - - - - - - - - - 75 MHz

intended Use: