Intel 2608 & 2708  
Written by Accutron on 2017-03-13  

Devices included in this entry:

Intel B2708 UV-EPROM (24-pin ceramic sandwich DIP)
Motorola MCM2708L UV-EPROM (24-pin cerDIP; pictured in thumbnail)
National Semiconductor MM2708Q UV-EPROM (24-pin cerDIP)
Texas Instruments TMS2708JL UV-EPROM (24-pin cerDIP)
Texas Instruments TMS2708JL UV-EPROM (24-pin ceramic sandwich DIP)
Intel B2608 OTP EPROM (24-pin ceramic sandwich DIP)
Intel D2608 OTP EPROM (24-pin ceramic sandwich DIP)

Introduced in 1975, the 2708 is one of Intel's second-generation UV-EPROM devices. Unlike the 1702, which was fabricated using a PMOS manufacturing process, the 2708 is fabricated in NMOS, and has a much faster 350ns access time. In addition to the 2708, Intel manufactured the 2608, which is functionally identical to the 2708 but sold as a one-time-programmable (OTP) EPROM, with a permanently masked erasure window. The 2608 was cheaper to manufacture than the 2708, as the absence of erasure function testing lowered production costs.

Intel B2708 UV-EPROM.

Motorola MCM2708L UV-EPROM.

National Semiconductor MM2708Q UV-EPROM.

Texas Instruments TMS2708JL UV-EPROM.

Texas Instruments TMS2708JL UV-EPROM, later variation.

Intel B2608 OTP EPROM.

Intel D2608 OTP EPROM, an alternate package variation of the 2608.

This article is part of the [Digital Integrated Circuits] exhibit.

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