The QS3251 is a high-speed CMOS TTL-compatible 8:1 multiplexer/ demultiplexer. The QS3251 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 -40C to +85C.

Features

  • Enhanced N channel FET with no inherent diode to Vcc
  • 5 ohm 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
  • Video, audio, graphics switching, muxing
  • Hot-swapping, hot-docking
  • Voltage translation (5V to 3.3V)
  • Available in 16 pin QSOP and S1 packages

Product Options

注文可能な製品ID Part Status Pkg. Code Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type 購入/サンプル
QS3251QG Active PCG16 QSOP 16 C Yes Tube
Availability
QS3251QG8 Active PCG16 QSOP 16 C Yes Reel
Availability
QS3251S1G Active DCG16 SOIC 16 C Yes Tube
Availability
QS3251S1G8 Active DCG16 SOIC 16 C Yes Reel
Availability

Documentation & Downloads

タイトル 他の言語 タイプ 形式 サイズ 日付
データシート
QS3251 Datasheet Datasheet PDF 279 KB
アプリケーションノート、ホワイトペーパー
AN-11: 5V and 3V Conversion with Zero Delay Application Note PDF 417 KB
Quickswitch Basics Application Note PDF 142 KB
TN-07: Analysis of QuickSwitch Behavior Application Note PDF 102 KB
AN-13: Converting TTL to Hot Plug Application Note PDF 85 KB
AN-09: CMOS Bus Switches Provide 0 Delay Application Note PDF 121 KB
AN-19: Space Reduction Via Placement Application Note PDF 41 KB
AN-20: Board Assembly for 0.4mm Pin Surface Mounts Application Note PDF 62 KB
AN-17: Peripheral Isolation in Notebook Computers Application Note PDF 68 KB
PCN / PDN
PCN# : A1905-01 Alternate Assembly Location & Change of Material Sets Product Change Notice PDF 313 KB
PCN# : A1602-01(R1) Add Greatek Taiwan as Alternate Assembly Product Change Notice PDF 611 KB
PCN# : A1602-01 Add Greatek Taiwan as Alternate Assembly Product Change Notice PDF 611 KB
PCN#: A-0410-02, Change IDT marking logo with new IDT gridless w Product Change Notice PDF 24 KB
PCN# A-0508-02: OSET Alternate Assembly Location for Green Product Change Notice PDF 18 KB
PCN#A-0504-02R1: Assembly Transfer IDT-Manila to OSE-Ph Product Change Notice PDF 16 KB
PCN#: TB-0504-01, Transfer Test & Backend from IDT-Manila to IDT Product Change Notice PDF 35 KB
PCN#: A-0504-02, Transfer assembly facility IDT-Manila to OSE-Ph Product Change Notice PDF 47 KB
PCN#:A-0401-01, new m/c G600 & 8290 d/a material Product Change Notice PDF 196 KB
PCN#:A-0312-02, new die attach material - 8290 Product Change Notice PDF 116 KB
PCN#:A-0312-01, new mold compound material - G600 Product Change Notice PDF 109 KB
PCN# L0212-01 Fab Site Change to Fab 4 Product Change Notice PDF 50 KB
PCN# G-0203-05 Mold Compound Product Change Notice PDF 40 KB
PCN# G0106-01, Moisture Sensitive Label Change Product Change Notice PDF 274 KB
PCN# G0005-01, Laser Top Mark Product Change Notice PDF 24 KB
Downloads
QS3251 IBIS Model Model - IBIS ZIP 14 KB

Boards & Kits