74HC4851PW,112

Analog Switches, Multiplexers, Demultiplexers Overview

The Nexperia 74HC4851PW,112 is an 8-channel analog multiplexer/demultiplexer housed in a TSSOP16 (SOT403-1) package. It operates on a single supply voltage ranging from 2.0 V to 6.0 V. The device features injection-current effect control, allowing disabled channel signals to exceed the supply voltage without affecting the active channel. Key electrical parameters include a maximum ON resistance of 195 Ω at 6.0 V and a typical propagation delay of 10 ns at 6.0 V. It supports ambient temperatures from -40 °C to +125 °C and includes ESD protection exceeding 2000 V (HBM).

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Injection-current effect control prevents signal interference from overvoltage conditions on disabled channels.
• Wide supply voltage range supporting operation from 2.0 V to 6.0 V.
• High noise immunity with latch-up performance exceeding 100 mA per JESD 78 Class II level A.

Analog Switches, Multiplexers, Demultiplexers Applications

• Analog multiplexing and demultiplexing
• Digital multiplexing and demultiplexing
• Signal gating

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific ordering suffix against the manufacturer's current catalog to confirm availability and exact packaging configuration. Confirm that the TSSOP16 package variant matches the required PCB footprint and thermal dissipation needs for the target application environment.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when injection-current cross-coupling must be minimized below 1 mV/mA. Ensure the operating voltage stays within the 2.0 V to 6.0 V range. Consider the 195 Ω maximum ON resistance at higher voltages when designing for low-signal applications requiring high precision.

Analog Switches, Multiplexers, Demultiplexers Part Context

This part belongs to the 74HC4851 family of high-speed Si-gate CMOS devices. It is specified in compliance with JEDEC standard no. 7A. The PW suffix indicates the TSSOP16 plastic thin shrink small outline package, which is one of several available package options including SO16 and DHVQFN16.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

The 74HC4851D variant offers identical functionality but utilizes an SO16 package instead of TSSOP16. Verify pin compatibility and physical dimensions before substituting packages in existing designs.

Analog Switches, Multiplexers, Demultiplexers FAQ

How does the injection-current effect control benefit automotive applications?

It allows signals at disabled analog input channels to exceed the supply voltage without affecting the enabled channel, eliminating the need for external diode/resistor networks typically used to keep signals within the supply-voltage range.

What is the maximum ON resistance for the 74HC4851 at 6.0 V?

The maximum ON resistance is 195 Ω at a supply voltage of 6.0 V with a switch current of ≤ 2 mA.

Is the enable input active HIGH or LOW?

The enable input (E) is active-LOW. When E is LOW, one of the eight switches is selected; when E is HIGH, all switches are in the high-impedance OFF-state.