This document is a product specification for the Signetics 82S23 and 82S123 devices, which are 256-bit TTL bipolar PROMs. These field-programmable memory chips feature on-chip decoding and a single Chip Enable input, allowing for immediate availability of custom patterns via a fusing procedure. The devices are available with either Open Collector or 3-State outputs to optimize word expansion in bused organizations.
| Address access time | 50ns max |
|---|---|
| Power dissipation | 1.3mW/bit typ |
| Input loading | -100.uA max |
The 82S23 has Open Collector outputs, while the 82S123 has 3-State outputs.
Yes, the devices are fully TTL compatible.