DIO31308

Version 1.1, Mar 2026

www.dioo.com

© 2026 Dioo Microcircuits Co., Ltd. Jiangsu

17

10.3. Design requirements

For this design example, use the parameters listed in Table 3.

Table 3. Design parameters

Parameters

Values

Supply (VCC)

5.0 V

I/O signal range

0 V to VCC (Rail to rail)

Control logic thresholds

1.8 V compatible

Switch inputs

Eight

10.4. Power supply recommendations

The DIO31308 operates across a wide supply range of 1.62 V to 5.5 V. Note: do not exceed the absolute

maximum ratings as stresses beyond the listed ratings may cause permanent damage to the devices.

Power-supply bypassing improves noise margin and prevents switching noise propagation from the VCC supply

to other components. Good power-supply decoupling is important to achieve optimum performance.

Use a supply decoupling capacitor between 0.1 μF and 10 μF from VCC to ground for better supply noise

immunity. Using low-impedance connections, position the bypass capacitors as close as feasible to the device's

power supply pins. For power-supply decoupling, DIOO advises utilizing multi-layer ceramic chip capacitors

(MLCCs), which have low equivalent series resistance (ESR) and inductance (ESL) properties. Avoid to utilize

vias to link the capacitors to the device pins for particularly sensitive systems or systems in harsh noise

environments, which may provide better noise immunity. For connections to ground planes, using several vias in

parallel reduces the overall inductance and is advantageous.