scope:

This specification covers the detail requirements for hermetically sealed, red alpha-numeric light emitting diode displays, with CMOS IC. Two levels of product assurance are provided as specified in MIL-D-87157.

The device type shall be as follows:

Device type Function 01 Four character, alphanumeric display in a hermetic 18-lead package, 17-segment monolithic LED; on board CMOS IC serves as ASCII data latch and decoder and LED driver. Device has dimming features.

The device quality level shall be levels A and B as defined in MIL-D-871B7.

Luminous intensity code shall be as follows:

Minimum luminous Maximum luminous Luminous intensity code intensity µcd intensity µcd AA 275 463 A 342 575 B 425 713 C 527 884 D 654 1096 E 810 1359 X 1/ 1/

Test conditions shall be as specified in group A, subgroup 7.

See figure 1.

Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commander, US Amy Laboratory Command, ATTN: SLCET-R-S, Fort Monmouth, NJ 07703-5302 by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document, or by letter.

Maximum total power dissipation (see 6.3): Device type 01 2/ - - - - - - - - - - - - - - - - - - - 918 mW Logic supply voltage (V_CC) - - - - - - - - - - - - - - - - −0.5 V to 7 V dc Voltage applied to input logic pins (see 6.3)- - - - - - - −0.5.V to V_CC +0.5 V dc Maximum solder temperature 3/ - - - - - - - - - - - - - - +260°C Ambient operating temperature 4/- - - - - - - - - - - - - −55°C to +100°C Ambient storage temperature- - - - - - - - - - - - - - - - −65°C to +125°C

Logic supply voltage - - - - - - - - - - - - - - - - - - - 4.5 to 5.5 V dc Operating temperature range 4/ - - - - - - - - - - - - - −55°C to +100°C Logic input voltage, high - - - - - - - - - - - - - - - - 2 V dc minimum @ +25°C, 2.2 V dc minimum @ −55°C Logic input voltage, low - - - - - - - - - - - - - - - - - 0.8 V dc maximum