scope:

This specification covers the detail requirements for a monolithic, N-channel, silicon gate counter/timer unit. One product assurance class and a choice of lead finishes are provided and are reflected in the part number.

The part number shall be in accordance with MIL-M-38510, with the exception that the "JAN" or "J" certification shall not be used.

The device type shall be as follows:

Device type Frequency Circuit 01 4.0 MHz Counter/timer unit 02 2.5 MHz Counter/timer unit

The device class shall be the product assurance level as defined in MIL-M-38510.

The case outline shall be designated as follows:

Letter Case outline (see MIL-M-38510, appendix C) X See figure 1 (28 lead, 9/16" × 17/16"), dual-in-line package

V_CC supply voltage range (referenced to ground) - −0.3 to +7 V dc Voltage on any pin (referenced to ground) - - - - −0.3 to +7 V dc Storage temperature range - - - - - - - - - - - - −65°C to +150°C Maximum power dissipation: At −55°C- - - - - - - - - - - - - - - - - - - - 0.7 W At +125°C - - - - - - - - - - - - - - - - - - - 0.5 W Lead temperature (soldering 10 seconds) - - - - - +270°C Maximum junction temperature (T_J) at T_C = 125°C - - - - - - - - - - - - - - - - - +180°C Thermal resistance, junction to case (θ_JC)- - - - 48°C/W

Supply voltage (V_CC)- - - - - - - - - - - - - - - 4.5 V dc minimum to 5.5 V dc maximum Minimum high level input voltage (V_IH): Logic inputs- - - - - - - - - - - - - - - - - - 2.0 V dc Clock input - - - - - - - - - - - - - - - - - - V_CC - 0.6 V dc Maximum low level input voltage (V_IL): Logic inputs- - - - - - - - - - - - - - - - - - 0.8 V dc Clock input - - - - - - - - - - - - - - - - - - 0.45 V dc

Beneficial comments (recommendations, additions, deletions) and any pertinent data which any be of use in improving this document should be addressed to: Rome Air Development Center, RADC (RBE-2), Griffiss AFB, NY 13441, by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter.

Frequency of operation: 01 circuit- - - - - - - - - - - - - - - - - - - 0.5 to 4.0 MHz 02 circuit- - - - - - - - - - - - - - - - - - - 0.5 to 2.5 MHz Case operating temperature range (T_C) - - - - - - −55°C to +125°C Clock rise time: 01 circuit- - - - - - - - - - - - - - - - - - - 20 ns maximum 02 circuit- - - - - - - - - - - - - - - - - - - 30 ns maximum Clock fall time: 01 circuit- - - - - - - - - - - - - - - - - - - 20 ns maximum 02 circuit- - - - - - - - - - - - - - - - - - - 30 ns maximum

intended Use:

Microcircuits conforming to this specification are intended for logistic support of existing equipment.