Cool stuff and curiosities from my collection, mostly of the semiconductor type.
All images are links to full-size copies.
These chips are Raytheon-manufactured equivalents to the MC962, which I believe to be manufactured in week 29 of 1969. No datasheet for this exists on the web, but I have found a Motorola DTL logic product catalog that contains some datasheet-adjacent information for the MC962, including pin functions. These red-pink (rink?) chips are working, contain three triple-input NAND gates, and have the same pinout as the 74x10 logic chip. The pins are gold-plated and have a "1" shaped hole in pin 1. Due to the unscrupulous ethics of the manufacturer, I refer to these as sinister semiconductors.
Infrared-emitting LEDs, in a transparent TO-92 package (a highly unusual case). Despite having a 3-pin TO-92 package like a transistor, these are 2-pin devices with the third pin internally disconnected
and functionally useless.
Datasheet: page 3-25 (pdf page 54) of the 1981 Motorola Optoelectronic Device Data book
These are similar to the Motorola Red TO-92 LED documented by Industrial Alchemy, so
assumptions regarding that part can also be assumed for this one, in particular:
"...suggesting that at one point in the not-so-distant past, it was actually economically viable to increase the gold content of your product by 50% if it would allow you to avoid changing your package tooling."These LEDs can also be considered sinister semiconductors, for reasons established in Exhibit I.
Photodiode and transimpedance op-amplifier in one transparent DIP-8 package. Outputs a voltage level proportional to incident light.
OPT101 datasheet
Soviet clone of the Intel 8086 CPU. Pin and binary compatible with the i8086. Has a 2.50mm pin pitch, instead of the much more common 2.54mm pin pitch of the west, making it a poor fit in breadboards and chip sockets.
Smart LED display with four 16-segment digits. Takes input using a 2-bit digit selection bus and a 7-bit data bus for ASCII character selection.
HPDL-1414 datasheet
A functional equivalent to the TIL311. A hex display with 4-bit BCD data input, and can display hex digits 0 through F, representing the bit sequence at the input. These consume a constant
current of about 90mA.
TIL311 datasheet
Four digit 7-segment "bubble" display, DIP-12
HP 5082-7400 series datasheet
Smart display with 4-bit BCD input. Can display hex digits 0-9, A, C, E and F. The BCD code for B instead displays a minus sign, and the code for D instead blanks all segments.
TIL308 datasheet
Page created: 11DEC2025
Last modified: 22DEC2025