scope:

This drawing forms a part of a one part - one part number documentation system (see 6.6 herein). Two product assurance classes consisting of military high reliability (device classes Q and M) and space application (device class V), and a choice of case outlines and lead finishes are available and are reflected in the Part or Identifying Number (PIN). Device class M microcircuits represent non-JAN 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". When available, a choice of Radiation Hardness Assurance (RHA) levels are reflected in the PIN.

The PIN shall be as shown in the following example:

Device class M RHA marked devices shall meet the MIL-I-38535 appendix A specified RHA levels and shall be marked with the appropriate RHA designator. Device classes Q and V RHA marked devices shall meet the MIL-I-38535 specified RHA levels and shall be marked with the appropriate RHA designator. A dash (-) indicates a non-RHA device.

The device type(s) shall identify the circuit function as follows:

Device type Generic number Circuit function 01 54ABT646 Octal bus transceiver and register with three-state outputs, TTL compatible inputs 02 54ABT646A Octal bus transceiver and register with three-state outputs, TTL compatible inputs

The device class designator shall be a single letter identifying the product assurance level as follows:

Device class Device requirements documentation M Vendor self-certification to the requirements for non-JAN class B microcircuits in accordance with 1.2.1 of MIL-STD-883 Q or V Certification and qualification to MIL-I-38535

The case outline(s) shall be as designated in MIL-STD-1835 and as follows:

Outline letter Descriptive designator Terminals Package style K GDFP2-F24 or CDFP3-F24 24 Flat package L GDIP3-T24 or CDIP4-T24 24 Dual-in-line 3 CQCC1-N28 28 Leadless-chip-carrier package

The lead finish shall be as specified in MIL-STD-883 (see 3.1 herein) for class M or MIL-I-38535 for classes Q and V. Finish letter "X" shall not be marked on the microcircuit or its packaging. The "X" designation is for use in specifications when lead finishes A, B, and C are considered acceptable and interchangeable without preference.

Supply voltage range (V_CC) - - - - - - - - - - - - - - - - - - - - - - - - - - - - −0.5 V dc to +7.0 V dc DC input voltage range (V_IN) (except I/O ports) - - - - - - - - - - - - - - - - - - −0.5 V dc to +7.0 V dc 4/ DC input voltage range (V_IN) (I/O ports) - - - - - - - - - - - - - - - - - - - - - −0.5 V dc to +5.5 V dc 4/ DC output voltage range (V_OUT) - - - - - - - - - - - - - - - - - - - - - - - - - - −0.5 V dc to +5.5 V dc 4/ DC input clamp current (I_IK) (V_IN 〉 0.0 V) - - - - - - - - - - - - - - - - - - - - −18 mA DC output clamp current (I_OK) (V_OUT 〉 0.0 V) - - - - - - - - - - - - - - - - - - - −50 mA DC output current (I_OL) (per output) - - - - - - - - - - - +96 mA Storage temperature range (T_STG) - - - - - - - - - - - - - - - - - - - - - - - - - −65°C to +150°C Maximum power dissipation (P_D) - - - - - - - - - - - - - - - - - - - - - - - - - - 376 mW 5/ Lead temperature (soldering, 10 seconds) - - - - - - - - - - - - - - - - - - - - - +300°C Thermal resistance, junction-to-case (Θ_JC) - - - - - - - - - - - - - - - - - - - - See MIL-STD-1835 Junction temperature (T_J) - - - - - - - - - - - - - - - - - - - - - - - - - - - - +175°C

Supply voltage range (V_CC) - - - - - - - - - - - - - - - - - - - - - - - - - - - - +4.5 V dc to +5.5 V dc Input voltage range (V_IN) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - +0.0 V dc to V_CC Output voltage range (V_OUT) - - - - - - - - - - - - - - - - - - - - - - - - - - - - +0.0 V dc to V_CC Maximum low level input voltage (V_IL) - - - - - - - - - - - - - - - - - - - - - - - +0.8 V Minimum high level input voltage (V_IH) - - - - - - - - - - - - - - - - - - - - - - +2.0 V Case operating temperature range (T_C) - - - - - - - - - - - - - - - - - - - - - - - −55°C to +125°C Maximum input rise and fall rate (Δt/ΔV) - - - - - - - - - - - - - - - - - - - - - 5 ns/V Maximum high level output current (I_OH) - - - - - - - - - - - - - - - - - - - - - - −24 mA Maximum low level output current (I_OL) - - - - - - - - - - - - - - - - - - - - - - +48 mA

Fault coverage measurement of manufacturing - - - - - - - - - - - - - - - - - - - XX percent 6/ logic tests (MIL-STD-883) test method 5012)

1/

Stresses above the absolute maximum rating may cause permanent damage to the device. Extended operation at the maximum levels may degrade performance and affect reliability. 2/ Unless otherwise noted, all voltages are referenced to GND. 3/

The limits for the parameters specified herein shall apply over the full specified V_CC range and case temperature range of −55°C to +125°C. 4/

The input and output negative voltage ratings may be exceeded provided that the input and output clamp current ratings are observed. 5/

Power dissipation values are derived using the formula P_D = V_CCI_CC + nV_OLI_OL, where V_CC and I_OL are as specified in 1.4 above, I_CC and V_OL are as specified in table I herein, and n represents the total number of outputs. 6/

Values will be added when they become available.

intended Use: