|Hewlett-Packard 5082-7300 Series LED Displays (5082-7359, 5082-7304, HDSP-0962) ||
|Written by AnubisTTP on 2017-10-03
Devices included in this entry:
Hewlett-Packard 5082-7340 red intelligent LED display (8-pin red epoxy DIP)
Hewlett-Packard 5082-7359 red intelligent LED display (8-pin glass-on-ceramic DIP)
Hewlett-Packard HDSP-0962 green intelligent LED display (8-pin glass-on-ceramic DIP; pictured in thumbnail)
The 5082-7300 and its descendants are some of the most popular intelligent LED displays ever produced. First manufactured in the early 1970s as a lower cost replacement for the 5082-7000, the 7300 makes use of a smaller package and false-bitmapped 4x7 array, which reduces the number of LED dies needed for each device. Each display has an integrated BCD decoder that accepts 8421 BCD logic, as well as a built in latch. Initially this display was made in 3 different versions with different capabilities, including the 5082-7340, which could display hexadecimal characters. HP also produced the 5082-7304, an overflow indicator which contained no logic but was visually compatible with other displays in this series. Ironically, the 5082-7304 is much harder to find than the other displays in this family, despite its limited utility.
Hewlett Packard also produced a number of military grade derivatives of the 7300, which were encased in hermetic glass and ceramic packages. Two such examples are the 5082-7359, a red LED device, and the HDSP-0962, which makes use of green LEDs.
5082-7300 Series Datasheet
Hewlett-Packard 5082-7340, an early series member with a red epoxy package.
Hewlett-Packard 5082-7359 intelligent display. The 5082-7359 is electrically identical to the 5082-7340 pictured above, but replaces the standard red epoxy package with a ruggedized glass-on-ceramic DIP, designed for operation in harsh environments.
Hewlett-Packard HDSP-0962 intelligent display. The HDSP-0962 is identical to the 5082-7359, but is equipped with green LED dies instead of red like the 5082-7359. The glass-on-ceramic enclosure allows for a range of display colors, a design versatility not permitted with the older red epoxy construction of the 5082-7340.
HDSP-0962 die structure, 20x magnification. Note the row of diode dies near the top of the image.
HDSP-0962 driver IC, 30x magnification. The die is approximately 2mm square.
Hewlett-Packard 5082-7304 display, normal operation. The 5082-7304 is a non-intelligent overflow indicator designed to be visually compatible with the 5082-7340 and 5082-7300.
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