Overview
The CD74HCT4051-Q1 is a digitally controlled analog switch and multiplexer/demultiplexer produced by Texas Instruments. This device utilizes silicon gate CMOS technology to achieve high-speed operation similar to LSTTL while maintaining the low power consumption of standard CMOS integrated circuits. It is designed to control analog voltages across the voltage supply range and features low ON resistance and low OFF leakages. The device includes an enable control that disables all switches when set high, making it versatile for various analog switching applications.
Key Specifications
| Parameter | Test Conditions | Min | Max | Unit | |
|---|---|---|---|---|---|
| DC Supply Voltage (VCC - VEE) | - | -0.5 | - | 10.5 | V |
| ON Resistance (rON) | VCC - VEE = 4.5V, IO = 1mA | 70 | - | 160 | Ω |
| ON Resistance (rON) | VCC - VEE = 9V, IO = 1mA | 40 | - | 120 | Ω |
| Switch ON/OFF Leakage Current | VIS = VCC, VOS = VEE, 25°C | 100 | - | 360 | µA |
| Propagation Delay (tPD) | CL = 15pF, VCC = 5V, 25°C | 4 | - | 18 | ns |
| Analog Channel Input Capacitance | - | - | - | 5 | pF |
| Common Output Capacitance | - | - | - | 25 | pF |
| Minimum Switch Frequency Response | -3 dB, VCC - VEE = 4.5V | - | - | 145 | MHz |
Key Features
- Wide Analog Input Voltage Range: Up to ±5V maximum.
- Low ON Resistance: Typical values of 70Ω (VCC - VEE = 4.5V) and 40Ω (VCC - VEE = 9V).
- Bidirectional Switching: Allows any analog input to be used as an output and vice versa.
- Enable Control: Disables all switches when set high.
- Low Power Consumption: Utilizes CMOS technology for low power consumption.
- High-Speed Operation: Similar to LSTTL speeds.
- Low OFF Leakages: Minimizes signal loss when switches are in the OFF state.
Applications
The CD74HCT4051-Q1 is suitable for a variety of applications, including:
- Analog Signal Switching: In audio, video, and other signal processing systems.
- Automotive Systems: Due to its automotive qualification, it is suitable for use in vehicle electronics.
- Industrial Control Systems: For controlling and switching analog signals in industrial environments.
- Medical Devices: Where precise analog signal control is required.
- Communication Equipment: For switching and routing analog signals in communication systems.
Q & A
- What is the CD74HCT4051-Q1 used for?
The CD74HCT4051-Q1 is a digitally controlled analog switch and multiplexer/demultiplexer used for controlling and switching analog signals. - What is the typical ON resistance of the CD74HCT4051-Q1?
The typical ON resistance is 70Ω (VCC - VEE = 4.5V) and 40Ω (VCC - VEE = 9V). - What is the maximum DC supply voltage for the CD74HCT4051-Q1?
The maximum DC supply voltage is 10.5V. - Does the CD74HCT4051-Q1 have an enable control?
Yes, it has an enable control that disables all switches when set high. - What is the propagation delay of the CD74HCT4051-Q1?
The propagation delay is typically 4 ns (CL = 15pF, VCC = 5V, 25°C) and up to 18 ns over the operating temperature range. - Is the CD74HCT4051-Q1 suitable for automotive applications?
Yes, it is qualified for automotive use. - What is the minimum switch frequency response of the CD74HCT4051-Q1?
The minimum switch frequency response is 145 MHz at -3 dB (VCC - VEE = 4.5V). - What is the common output capacitance of the CD74HCT4051-Q1?
The common output capacitance is 25 pF. - How does the CD74HCT4051-Q1 handle low OFF leakages?
The device minimizes signal loss when switches are in the OFF state due to its low OFF leakages. - What package options are available for the CD74HCT4051-Q1?
The device is available in a 16-pin SOIC package.
