SN74CB3Q3125_15 Datasheet, PDF (10/26 Pages) Texas Instruments – Quadruple FET Bus Switch

SN74CB3Q3125
SCDS143C – OCTOBER 2003 – REVISED JUNE 2015
9 Application and Implementation
www.ti.com
NOTE
Information in the following applications sections is not part of the TI component
specification, and TI does not warrant its accuracy or completeness. TI’s customers are
responsible for determining suitability of components for their purposes. Customers should
validate and test their design implementation to confirm system functionality.
9.1 Application Information
The SN74CB3Q3125 device can be used to control up to four channels simultaneously.
9.2 Typical Application
The application shown in Figure 5 is a 4-bit bus being controlled. The OE pins are used to control the chip from
the bus controller. This is a very generic example and can apply to many situations. If an application requires
less than 4 bits, be sure to tie the A side to either high or low on unused channels.
Bus
4
Controller
1OE ₁
1A ₂
r_on
2OE ₄
2A ₅
r_on
3OE ₁₀
3A ₉
r_on
V_cc
V_cc
14
0.1 2F
3 ^1B
6 ^2B
8 ^3B
4
Device
4OE ₁₃
4A ₁₂ ^ron
GND ₈
11 ^4B
Pin numbers for DGV, PW, RGY packages
only
Figure 5. Typical Application of the SN74CB3Q3257
9.2.1 Design Requirements
The 0.1-µF capacitor must be placed as close as possible to the SN74CB3Q3257 device.
10
Submit Documentation Feedback
Copyright © 2003–2015, Texas Instruments Incorporated
Product Folder Links: SN74CB3Q3125