Fairchild Semiconductor FST3345 8-Bit Bus Switch Datasheet

This datasheet introduces the features of the FST3345 8-bit bus switch, including 4 Ω switch connection between two ports, minimal propagation delay through the switch, low ICC, and zero bounce in flow-through mode control inputs compatible with TTL level.


Fairchild Semiconductor FST3345 8-Bit Bus Switch Datasheet - cover page
Brand
Fairchild
Category
Other Electronics
Document type
Datasheet
Language
English
Pages
9
File format
PDF
File size
435 KB
Published
01 August, 2012
Updated
30 September, 2023
Model
FST3345
MD5 checksum
509EA6E900C3AC5CD7594BF48176E4CC

About this manual

The FST3345 is an 8-bit bus switch designed to connect two ports with minimal propagation delay and zero bounce in flow-through mode. The device features dual output enable inputs (OE and /OE) and is compatible with TTL logic levels. It is organized as an eight-bit switch where port A connects to port B when enabled, or enters a high-impedance state when disabled.

What's inside

  • Features
  • Description
  • Ordering Information
  • Logic Diagram
  • Pin Configuration
  • Truth Table
  • Absolute Maximum Ratings
  • DC Electrical Characteristics
  • AC Electrical Characteristics
  • Physical Dimensions

Specifications

Number of Bits8-bit
Operating Temperature Range-40 to +85 °C
Package TypesSOIC, QSOP, TSSOP
On Resistance (Typical)8 Ω
Propagation Delay (Max)0.25 ns

Frequently asked questions

What is the function of the OE and /OE inputs?

When /OE is LOW or OE is HIGH, the switch is ON and port A is connected to port B. When /OE is HIGH and OE is LOW, the switch is OPEN.

Is the FST3345 compatible with TTL levels?

Yes, the device is organized as an eight-bit switch with dual output enable inputs compatible with TTL levels.

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