TC74HC4051AF(EL,F)

Overview

The TC74HC4051AF(EL,F) is an 8-channel analog multiplexer/demultiplexer manufactured by Toshiba Semiconductor and Storage. It utilizes silicon gate C2MOS technology to achieve high-speed operation comparable to LSTTL while maintaining low CMOS power dissipation. The device operates within a supply voltage range of 2 V to 6 V for VCC and -6 V to 0 V for VEE, supporting a total supply span (VCC-VEE) up to 12 V. Key electrical parameters include a typical propagation delay of 15 ns at VCC = 5 V, a maximum quiescent supply current of 4 μA, and a typical ON resistance of 50 Ω at a 9 V supply difference. It features input protection against static discharge and transient excess voltages.

Feature Summary

• High-speed switching performance with low propagation delay suitable for logic-level control applications.
• Low power consumption characteristic of CMOS technology, ensuring minimal quiescent current draw.
• Capable of switching large amplitude signals using small logical control signals across wide supply ranges.
• Integrated protection circuits on all inputs to guard against electrostatic discharge and transient overvoltage.

Applications

• Signal routing in data acquisition systems requiring analog channel selection.
• Logic level conversion between different voltage domains using single power supplies.
• Audio signal switching and processing circuits utilizing low distortion characteristics.

Procurement Notes

Verify the specific ordering suffix EL,F corresponds to the required tape and reel packaging configuration when placing orders. Confirm that the component meets RoHS compliance requirements for your target market regulations. Ensure the supplier provides valid traceability documentation for the Toshiba Semiconductor and Storage manufacturing origin. Cross-reference the manufacturer part number with distributor codes to prevent procurement errors.

Selection Notes

Select this component when an 8-channel analog switch is required with HC-CMOS speed and low power constraints. Verify that the application signal amplitudes fall within the VEE to VCC range supported by the chosen supply voltages. Consider the package weight and dimensions if thermal management or board space is critical. Ensure unused control inputs are tied to VCC or GND to maintain stable operation and prevent floating states.

Part Context

This device belongs to the TC74HC4051A series of high-speed CMOS analog multiplexers. It is functionally pin-compatible with older 4051/4052/4053B standards while offering superior speed and lower power. The AF suffix denotes the SOP-16 surface mount package variant. It serves as a direct replacement for legacy bipolar multiplexers in designs prioritizing reduced power consumption without sacrificing switching speed.

Replacement Considerations

Direct functional substitutes include the TC74HC4051AP (DIP package) and TC74HC4051AFT (TSSOP package). Other manufacturers offer equivalent parts such as the SN74HC4051 or MC74HC4051, though electrical parameters like ON resistance and propagation delay may vary slightly. Always verify pinout compatibility and absolute maximum ratings before substituting.