Texas Instruments Schottky Series 548/745 PROMs Data Manual

Brand: Texas Instruments
Category: Memory
Document type: Datasheet
Language: English
Pages: 6
File format: PDF
File size: 365 KB
Published: 05 June, 2012
Updated: 30 September, 2023
Model: SN54S
MD5 checksum: 1CC7B88007B8205817A9FF0C3E76DB2C
PDF: Texas Instruments Schottky Series 548/745 PROMs Data Manual PDF

About this manual

This document is a technical data manual for the Schottky Series 548/745 Programmable Read-Only Memories (PROMs) manufactured by Texas Instruments. These monolithic TTL devices utilize titanium-tungsten (Ti-W) fuse links to store data, offering flexibility for system design upgrades and new applications.

What's inside

Schottky Series 548/745
Programmable Read-Only Memories
Titanium-Tungsten Fuse Links
Three-State or Open Collector Outputs
Power-Down Versions
Programming Procedure
Maximum Ratings
Recommended Operating Conditions

Specifications

Fuse Link Material	Titanium-Tungsten (Ti-W)
Programming Pulse Duration	100 microseconds
Operating Temperature (SN54S)	-55°C to +125°C
Operating Temperature (SN74S)	0°C to +70°C

Frequently asked questions

How are the PROMs programmed?

Data is electrically programmed by open-circuiting Ti-W metal links using a voltage pulse.

How long must a programming pulse last to guarantee operation?

A programming pulse of at least 98 microseconds is required.

What minimum current capability must the supply have during programming?

The supply must be capable of providing a minimum of 200 mA.

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