Overview
The CD74HC4051-Q1, produced by Texas Instruments, is a digitally controlled analog switch that utilizes silicon-gate CMOS technology. This device is designed to operate at speeds similar to LSTTL while maintaining the low power consumption characteristic of standard CMOS integrated circuits. It is qualified for automotive applications and features a wide analog input voltage range, low ON resistance, and fast switching and propagation speeds.
Key Specifications
| Parameter | Test Conditions | Typical Value | Unit |
|---|---|---|---|
| ON Resistance | VCC - VEE = 4.5V | 70 | Ω |
| ON Resistance | VCC - VEE = 9V | 40 | Ω |
| Low-level Input Voltage (VIL) | VCC = 2V | 0.5 | V |
| Low-level Input Voltage (VIL) | VCC = 4.5V | 1.35 | V |
| Low-level Input Voltage (VIL) | VCC = 6V | 1.8 | V |
| Analog Switch I/O Voltage (VIS) | VEE to VCC | 0 to 10 | V |
| Operating Free-Air Temperature (TA) | -40 to 125 | °C | |
| Input Transition Time (tt) | VCC = 2V | 0 to 1000 | ns |
| Input Transition Time (tt) | VCC = 4.5V | 0 to 500 | ns |
| Input Transition Time (tt) | VCC = 6V | 0 to 400 | ns |
| Switch Input Capacitance (CI) | 5 | pF | |
| Common Output Capacitance (CCOM) | 25 | pF | |
| Minimum Switch Frequency Response at -3 dB | VEE = -2.25V, VCC = 2.25V | 145 | MHz |
Key Features
- Qualified for automotive applications.
- Wide analog input voltage range of ± 5V maximum.
- Low ON resistance: 70Ω typical at VCC - VEE = 4.5V and 40Ω typical at VCC - VEE = 9V.
- Low crosstalk between switches.
- Fast switching and propagation speeds.
- Break-before-make switching.
- Operation control voltage range of 2V to 6V.
- Switch voltage range of 0V to 10V.
- High noise immunity with NIL = 30%, NIH = 30% of VCC at VCC = 5V.
Applications
- Digital radio.
- Signal gating.
- Factory automation.
- Televisions.
- Appliances.
- Programmable logic circuits.
- Sensors.
Q & A
- What is the CD74HC4051-Q1 used for?
The CD74HC4051-Q1 is a digitally controlled analog switch used for multiplexing or demultiplexing analog signals.
- What is the typical ON resistance of the CD74HC4051-Q1?
The typical ON resistance is 70Ω at VCC - VEE = 4.5V and 40Ω at VCC - VEE = 9V.
- What is the operating temperature range of the CD74HC4051-Q1?
The operating free-air temperature range is -40°C to 125°C.
- What are the control voltage and switch voltage ranges for the CD74HC4051-Q1?
The control voltage range is 2V to 6V, and the switch voltage range is 0V to 10V.
- Does the CD74HC4051-Q1 have high noise immunity?
Yes, it has high noise immunity with NIL = 30%, NIH = 30% of VCC at VCC = 5V.
- What are some common applications of the CD74HC4051-Q1?
Common applications include digital radio, signal gating, factory automation, televisions, appliances, programmable logic circuits, and sensors.
- What is the minimum switch frequency response at -3 dB for the CD74HC4051-Q1?
The minimum switch frequency response at -3 dB is 145 MHz at VEE = -2.25V, VCC = 2.25V.
- What type of technology does the CD74HC4051-Q1 use?
The CD74HC4051-Q1 utilizes silicon-gate CMOS technology.
- What is the package type and size for the CD74HC4051-Q1?
The device is available in TSSOP (PW) and SOIC (D) packages, with dimensions of 5mm × 6.4mm for TSSOP and 9.9mm × 3.9mm for SOIC.
- Does the CD74HC4051-Q1 have break-before-make switching?
Yes, it features break-before-make switching to prevent signal overlap.
