Overview
The CD74HCT151M is a high-speed CMOS logic 8-channel digital multiplexer produced by Texas Instruments. This device is part of the 74HCT series, which is designed for high-speed and low-power applications. The CD74HCT151M features three binary control inputs (A, B, and C) and an active low enable (G) input, allowing it to select one of eight channels. The outputs are provided in both inverting (W) and non-inverting (Y) forms. This multiplexer is suitable for a wide range of digital logic applications due to its balanced propagation delay, high noise immunity, and significant power reduction compared to LSTTL logic ICs.
Key Specifications
| Parameter | Unit | Min | Typ | Max |
|---|---|---|---|---|
| VCC Supply Voltage Range | V | 4.5 | - | 5.5 |
| Temperature Range | °C | -55 | - | 125 |
| Input Voltage (VI) | V | 0 | - | VCC |
| High Level Input Voltage (VIH) | V | 2 | - | - |
| Low Level Input Voltage (VIL) | V | - | - | 0.8 |
| High Level Output Voltage (VOH) | V | 4.4 | - | - |
| Propagation Delay (tpd) | ns | 16 | 38 | 48 |
| Output Transition Time (tt) | ns | 15 | 19 | 22 |
| Input Capacitance (CIN) | pF | 10 | - | - |
| Power Dissipation Capacitance (CPD) | pF | 58 | - | - |
Key Features
- Complementary Data Outputs: Provides both inverting (W) and non-inverting (Y) outputs.
- Buffered Inputs and Outputs: Ensures stable and reliable signal transmission.
- Fanout Capability: Supports up to 10 LSTTL loads for standard outputs and up to 15 LSTTL loads for bus driver outputs.
- Wide Operating Temperature Range: Operates from -55°C to 125°C.
- Balanced Propagation Delay and Transition Times: Ensures consistent and predictable signal timing.
- Significant Power Reduction: Compared to LSTTL logic ICs, reducing power consumption.
- High Noise Immunity: NIL = 30%, NIH = 30% of VCC at VCC = 5 V for HC types.
- Direct LSTTL Input Logic Compatibility: For HCT types, with VIL = 0.8 V (Max) and VIH = 2 V (Min).
- CMOS Input Compatibility: II ≤ 1 μA at VOL, VOH for HCT types.
Applications
- Digital Logic Circuits: Ideal for multiplexing and demultiplexing in digital logic systems.
- Communication Systems: Used in data transmission and reception systems where channel selection is necessary.
- Embedded Systems: Suitable for use in microcontroller and microprocessor-based systems requiring digital multiplexing.
- Industrial Control Systems: Applied in control and automation systems where multiple signal paths need to be managed.
- Consumer Electronics: Used in various consumer electronic devices requiring digital signal processing.
Q & A
- What is the CD74HCT151M used for?
The CD74HCT151M is a high-speed CMOS logic 8-channel digital multiplexer used for selecting one of eight channels based on three binary control inputs and an active low enable input.
- What is the operating voltage range of the CD74HCT151M?
The operating voltage range of the CD74HCT151M is from 4.5 V to 5.5 V.
- What is the temperature range of the CD74HCT151M?
The CD74HCT151M operates from -55°C to 125°C.
- What are the types of outputs provided by the CD74HCT151M?
The CD74HCT151M provides both inverting (W) and non-inverting (Y) outputs.
- What is the fanout capability of the CD74HCT151M?
The CD74HCT151M supports up to 10 LSTTL loads for standard outputs and up to 15 LSTTL loads for bus driver outputs.
- Does the CD74HCT151M have high noise immunity?
Yes, the CD74HCT151M has high noise immunity with NIL = 30%, NIH = 30% of VCC at VCC = 5 V for HC types.
- Is the CD74HCT151M compatible with LSTTL input logic?
Yes, the HCT types of the CD74HCT151M have direct LSTTL input logic compatibility.
- What is the propagation delay of the CD74HCT151M?
The propagation delay of the CD74HCT151M is typically around 38 ns.
- What is the output transition time of the CD74HCT151M?
The output transition time of the CD74HCT151M is typically around 19 ns.
- What are the common applications of the CD74HCT151M?
The CD74HCT151M is commonly used in digital logic circuits, communication systems, embedded systems, industrial control systems, and consumer electronics.
