Features
- Enhanced N-channel FET with no inherent diode to VCC
- 5Ω bidirectional switches connect inputs to outputs
- Zero propagation delay, zero ground bounce
- Undershoot clamp diodes on all switch and control inputs
- TTL-compatible control inputs
- Available in 16-pin QSOP and S1 packages
QS3251 - Block Diagram
Description
The QS3251 is a high-speed CMOS TTL-compatible 8:1 multiplexer/demultiplexer that has 3-state outputs. The QS3251 is a function and pinout-compatible version of the 74F251, 74FCT251, and the 74ALS/AS/LS251 8:1 multiplexers. The low ON-resistance of the QS3251 allows inputs to be connected to outputs without adding propagation delay and without generating additional ground bounce noise. Mux/Demux devices provide an order of magnitude faster speed than equivalent logic devices. The QS3251 is characterized for operation at -40 °C to +85 °C.
Parameters
| Attributes | Value |
|---|---|
| Function | 8:1 Mux/Demux |
| Pkg. Code | PCG16 |
| Temp. Range (°C) | -40 to 85°C |
| Bus Width (bits) | 8 |
| Core Voltage (V) | 5 |
| On Resistance (Ω) | 5 |
| Speed Grade | Standard |
Package Options
| Pkg. Type | Pkg. Dimensions (mm) | Lead Count (#) | Pitch (mm) |
|---|---|---|---|
| QSOP | 4.9 x 3.8 x 1.47 | 16 | 0.64 |
Applications
- Logic replacement
- Video, audio, graphics switching, muxing
- Hot-swapping, hot-docking
- Voltage translation (5V to 3.3V)
| Part Number | Status | Samples | Stock | Package | Budgetary Price (USD) | Lead Count (#) | Temp. Grade | Pb (Lead) Free | Carrier Type | Moisture Sensitivity Level (MSL) | Country of Assembly | Country of Wafer Fabrication |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| QS3251QG8 | Active | N/A | In Stock | QSOP | 1ku | $0.41 | 16# | C | Yes | Reel | 1 | MALAYSIA, PHILIPPINES | TAIWAN, USA |
| QS3251QG | Obsolete | N/A | Out of Stock | QSOP | 16# | C | Yes | Tube | 1 | |||
| QS3251S1G | Obsolete | N/A | Out of Stock | SOIC | 16# | C | Yes | Tube | 3 | |||
| QS3251S1G8 | Obsolete | N/A | Out of Stock | SOIC | 16# | C | Yes | Reel | 3 |
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- End Of Life NoticePDF 1.11 MB Aug 01, 2023
- End Of Life NoticePDF 1.29 MB Jan 31, 2023
- Application NotePDF 417 KB 7WDXRDKU4E7E-5-37238 Feb 06, 2014
- Product Change NoticePDF 24 KB 7WDXRDKU4E7E-5-41812 Nov 14, 2012
- Product Change NoticePDF 18 KB 7WDXRDKU4E7E-5-41809 Sep 02, 2005
- Product Change NoticePDF 16 KB 7WDXRDKU4E7E-5-41818 Jul 22, 2005
- Product Change NoticePDF 47 KB 7WDXRDKU4E7E-5-41814 Apr 29, 2005
- Product Change NoticePDF 35 KB 7WDXRDKU4E7E-5-41742 Apr 29, 2005
- Product Change NoticePDF 196 KB 7WDXRDKU4E7E-5-41797 Jan 19, 2004
- Product Change NoticePDF 116 KB 7WDXRDKU4E7E-5-41796 Dec 03, 2003
- Product Change NoticePDF 109 KB 7WDXRDKU4E7E-5-41795 Dec 03, 2003
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- Application NotePDF 417 KB 7WDXRDKU4E7E-5-37238 Feb 06, 2014
- Application NotePDF 66 KB 7WDXRDKU4E7E-5-37235 Jun 01, 1996View More (8)
Application Notes & White Papers (8)
- End Of Life NoticePDF 1.11 MB Aug 01, 2023
- End Of Life NoticePDF 1.29 MB Jan 31, 2023
- Product Change NoticePDF 313 KB Jun 11, 2019
- Product Change NoticePDF 611 KB 7WDXRDKU4E7E-5-60321 Apr 14, 2016View More (18)
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