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Diodes Incorporated introduces industry's smallest ultra-thin bus switch

SemiMediaEdit
January 17, 2020

Diodes Incorporated announced that its family of quad- and dual-channel 4:1 and 2:1 bus switches are now available in an ultra-thin QFN (UQFN) package. The UQFN package makes it easier for OEMs to increase PCB density and reduce product dimensions when developing PC notebooks and tablets as well as networking and telecommunications equipment.

Discrete logic devices, such as bus multiplexers and demultiplexers, remain a critical element of embedded design. The UQFN package measures just 3mm × 3mm × 0.65mm high, which is significantly smaller than comparable devices in standard packages. This smaller size allows the bus switches to be added to almost any design, even those with a high level of component density.

Each channel in the bus switches can multiplex/demultiplex a single output from between two or four inputs. While the path for all channels is selected through common inputs, the channels benefit from a dedicated active-low enable control, allowing each channel to be operated independently. All devices offer tri-state operation, presenting high-impedance outputs when the enable pin is held high.

The UQFN package used by the devices includes a thermal pad for more efficient heat dissipation. In addition, all of the devices in the four variants feature a very low on-resistance of just 5Ω, a near-zero propagation delay, and ultra-low quiescent current.

The PI3B3253 and PI3B3257 (dual, 4:1) and the PI3CH480 and PI5C3257 (quad, 2:1) bus switches have previously only been available in the QSOP and TSSOP packages, offering pin-compatibility with industry standard 74 series logic devices. The ZHD suffix on the part number denotes the UQFN package. By adding UQFN, which is one of the smallest packages available, to the packaging options, Diodes gives OEMs increased choice and even greater design flexibility.

For more information on these products, please visit www.diodes.com.

 

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DIODES Diodes Incorporated electronic components news PI3B3253 PI3B3257 PI3CH480 PI5C3257
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