Overview
The SN74CBT3251PWR, produced by Texas Instruments, is a 1-of-8 high-speed TTL-compatible FET multiplexer and demultiplexer. This device is designed to provide low ON-state resistance, allowing connections with minimal propagation delay. It features three binary control inputs (S0, S1, and S2) and an output enable (OE) input, which is active low. The SN74CBT3251PWR is suitable for a wide range of applications, including digital radio, signal gating, factory automation, televisions, appliances, programmable logic circuits, and sensors.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | -0.5 | 7 | V | |
| Input Voltage (VI) | -0.5 | 7 | V | |
| Continuous Channel Current | 128 | mA | ||
| Operating Temperature Range | -40 | 85 | °C | |
| On-state Resistance (Ron) at VCC = 5 V | 5 | Ω | ||
| Propagation Delay (tpd) at VCC = 5 V | 1.5 | 5.6 | ns |
Key Features
- 1-of-8 high-speed TTL-compatible FET multiplexer and demultiplexer
- Low ON-state resistance (typically 5 Ω for VCC = 5 V)
- Fast switching and propagation speeds
- TTL-compatible input levels
- Low crosstalk between switches
- Binary address decoding on chip for easy channel selection
- Accepts a wide range of analog signal levels from 0 V to 5 V
- Output enable (OE) input, active low
Applications
- Digital radio
- Signal gating
- Factory automation
- Televisions
- Appliances
- Programmable logic circuits
- Sensors
- Expanding MCU GPIOs
- Keypad polling systems in conjunction with microcontrollers
Q & A
- What is the primary function of the SN74CBT3251PWR?
The SN74CBT3251PWR is a 1-of-8 high-speed TTL-compatible FET multiplexer and demultiplexer.
- What is the typical on-state resistance of the SN74CBT3251PWR?
The typical on-state resistance is 5 Ω for VCC = 5 V.
- What is the operating temperature range of the SN74CBT3251PWR?
The operating temperature range is -40°C to 85°C.
- How many control inputs does the SN74CBT3251PWR have?
The device has three binary control inputs (S0, S1, and S2) and an output enable (OE) input.
- What is the purpose of the output enable (OE) input?
The output enable (OE) input is active low and enables the device when it is low.
- What types of packages are available for the SN74CBT3251PWR?
The device is available in SOIC, SSOP, TSSOP, and VQFN packages.
- Can the SN74CBT3251PWR be used in high-speed applications?
- How does the SN74CBT3251PWR handle analog signal levels?
- What is an example application of the SN74CBT3251PWR?
- What should be considered when designing with the SN74CBT3251PWR?
