---
title: "Signetics Write Only Memory 25120 Datasheet"
description: "(/wp-content/uploads/2018/02/Signetics-25120-Page-1-torn.png)](/wp-content/uploads/2018/02/25120-bw.pdf) Signetics started as an IC manufacturer. In 1975 they were bought by…"
canonical: "https://www.baldengineer.com/signetics-write-memory-25120-datasheet.html"
author: "James Lewis"
date: "2018-02-06T20:18:37Z"
lastmod: "2018-02-06T20:18:37Z"
categories: ["around-the-web","blog"]
tags: []
---

# Signetics Write Only Memory 25120 Datasheet


[![Signetics 25120 Page 1-torn](/wp-content/uploads/2018/02/Signetics-25120-Page-1-torn.png)](/wp-content/uploads/2018/02/25120-bw.pdf)

Signetics started as an IC manufacturer. In 1975 they were bought by Philips Semiconductors, which is now NXP. Interestingly the address in the datasheet, I think, was the original site. Today, it's home to a Lowe's Home Improvement Store. According to [this Wikipedia article](https://en.wikipedia.org/wiki/Write-only_memory_(joke)), it was created by John "Jack" Curtis. Apparently, it was included in a real Signetics catalog as a joke! Imagine that happening today. Additional information about the joke is available on [sigwom.com](http://www.sigwom.com/?page_id=17). (Which may be written by Jack himself, not entirely sure.)

[Download Signetics 25120 WOM Datasheet](/wp-content/uploads/2018/02/25120-bw.pdf)