Product Overview
Four-Channel CMOS Bus Switch, 16-Lead Surface Mount, IDT QuickSwitch Line
Condition
Condition: unused new old stock (NOS). Sold each. Verify suitability before use.
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Product Overview
QS3125Q is a four-channel CMOS bus switch from the IDT QuickSwitch line, the family Quality Semiconductor started and Renesas carries today. Each channel is a FET pass gate: enabled, it joins two bus lines; disabled, it isolates them.
Key Features
- Four bus switch channels in one package
- High-speed CMOS construction
- 16-lead surface-mount body, eight leads per side
Applications
- Replacing a QS3125Q on a board built around its 16-lead surface-mount footprint
- Cutting a peripheral off a shared data bus while it is unselected
Frequently Asked Questions
Is QS3125Q the same part as IDTQS3125Q?
Yes. IDTQS3125Q is the same number with the IDT prefix.
What package is it?
A 16-lead surface-mount body, eight leads per side.
Does it buffer the signal or just pass it through?
It passes it through. Each channel is a FET pass gate that joins two bus lines when enabled and isolates them when disabled.
A bus switch earns its keep by doing almost nothing: close the gate and the signal passes, open it and the bus forgets the other side was there. Check the part number on the board you are fixing, then count the buses that need a door.
