Overview
The CD74HCT151MT is a high-speed CMOS logic 8-input digital multiplexer produced by Texas Instruments. This device is part of the 74HCT series, which is compatible with TTL (Transistor-Transistor Logic) input levels. The CD74HCT151MT 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 operates over a wide temperature range of -55°C to 125°C, making it suitable for various environmental conditions. It is available in a SOIC (Small Outline Integrated Circuit) package, which is compact and suitable for modern electronic designs.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VCC Supply Voltage Range | 4.5 | 5.5 | V | |
| Temperature Range | -55 | 125 | °C | |
| VIH High Level Input Voltage | 2 | V | ||
| VIL Low Level Input Voltage | 0.8 | V | ||
| VOH High Level Output Voltage (IOH = -20 μA) | 4.4 | V | ||
| Propagation Delay (Any Data Input to Y) | 16 | 48 | ns | |
| Output Transition Time | 15 | 22 | ns | |
| Input Capacitance | 10 | pF | ||
| Power Dissipation Capacitance (CPD) | 58 | pF |
Key Features
- Complementary data outputs (inverting and non-inverting)
- Buffered inputs and outputs
- Fanout capability: Standard outputs can drive up to 10 LSTTL loads, bus driver outputs can drive up to 15 LSTTL loads
- Wide operating temperature range: -55°C to 125°C
- Balanced propagation delay and transition times
- Significant power reduction compared to LSTTL logic ICs
- TTL input logic compatibility: VIL = 0.8 V (Max), VIH = 2 V (Min)
- CMOS input compatibility: II ≤ 1μA at VOL, VOH
- High noise immunity: NIL = 30%, NIH = 30% of VCC at VCC = 5 V
Applications
- Digital multiplexing in communication systems
- Data routing and switching in computer networks
- Signal processing and control in industrial automation
- Audio and video signal routing
- General-purpose digital logic circuits
Q & A
- What is the primary function of the CD74HCT151MT?
The CD74HCT151MT is a single 8-channel digital multiplexer that selects one of eight channels based on three binary control inputs and an active low enable input.
- What is the operating voltage range for the CD74HCT151MT?
The operating voltage range for the CD74HCT151MT is 4.5 V to 5.5 V.
- What is the temperature range for the CD74HCT151MT?
The CD74HCT151MT operates over a temperature range of -55°C to 125°C.
- What types of outputs does the CD74HCT151MT provide?
The CD74HCT151MT provides both inverting (W) and non-inverting (Y) outputs.
- How many LSTTL loads can the standard outputs of the CD74HCT151MT drive?
The standard outputs can drive up to 10 LSTTL loads.
- What is the propagation delay for the CD74HCT151MT?
The propagation delay from any data input to the Y output is typically 16 ns to 48 ns.
- Is the CD74HCT151MT compatible with TTL input logic?
Yes, the CD74HCT151MT is compatible with TTL input logic, with VIL = 0.8 V (Max) and VIH = 2 V (Min).
- What is the input capacitance of the CD74HCT151MT?
The input capacitance is 10 pF.
- What is the power dissipation capacitance (CPD) of the CD74HCT151MT?
The power dissipation capacitance (CPD) is 58 pF.
- In what package is the CD74HCT151MT available?
The CD74HCT151MT is available in a SOIC (Small Outline Integrated Circuit) package.
