MC74HC4051AFEL

Overview

The MC74HC4051AFEL is a single-pole, eight-position analog multiplexer/demultiplexer manufactured by onsemi. It utilizes silicon-gate CMOS technology to achieve fast propagation delays and low ON resistance. The device features an analog power supply range (VCC – VEE) of 2.0 to 12.0 V and a digital control supply range (VCC – GND) of 2.0 to 6.0 V. Key electrical parameters include a maximum ON resistance of 190 Ω at VCC = 4.5 V and 100 Ω at VCC = 6.0 V. Propagation delay from channel select to analog output is 270 ns at VCC = 2.0 V and 45 ns at VCC = 6.0 V. The component is housed in a 16-lead SOEIAJ package.

Feature Summary

• Utilizes silicon-gate CMOS technology for improved linearity and lower ON resistance compared to metal-gate counterparts.
• Provides diode protection on all inputs and outputs to guard against high static voltages or electric fields.
• Features low crosstalk between switches and low noise performance suitable for precision analog signal routing.
• Control inputs are compatible with standard CMOS outputs and LSTTL outputs when pullup resistors are used.

Applications

• Analog signal routing in data acquisition systems
• Audio switching applications requiring low distortion
• Programmable gain amplifier circuits
• Test and measurement equipment signal selection

Procurement Notes

Verify the specific ordering suffix 'FEL' corresponds to the SOEIAJ-16 package configuration as defined in the manufacturer's documentation. Confirm that the component meets RoHS compliance requirements if applicable to the target assembly process. Ensure that the analog voltage levels applied to the channels remain within the specified VEE to VCC range during operation to prevent damage.

Selection Notes

Select this component when an 8-channel analog switch is required with a wide analog voltage swing capability up to 12 V differential. Consider the propagation delay specifications relative to the system clock speed. Verify that the control logic voltage levels match the available digital supply rails. Evaluate the thermal dissipation requirements based on the number of simultaneously active channels and load conditions.

Part Context

This device belongs to the HC405xA family of analog multiplexers, which also includes the dual 4-channel MC74HC4052A and the triple 2-channel MC74HC4053A. These devices share identical pinouts with the older metal-gate MC14051AB series but offer enhanced performance characteristics due to the use of silicon-gate CMOS technology. The family is designed for general-purpose analog switching applications.

Replacement Considerations

Direct pin-compatible replacements include other manufacturers' versions of the 74HC4051 logic family. When substituting, verify that the replacement part supports the same analog supply voltage range and maintains comparable ON resistance and propagation delay specifications. Ensure the alternative package type fits the existing footprint constraints.