Overview
The SN74HC151DT is a 8-line to 1-line data selector/multiplexer produced by Texas Instruments. This device provides full binary decoding to select one of eight data sources. The strobe (G) input must be at a low logic level to enable the inputs, while a high level at the strobe terminal forces the standard output (Y) low and the inverted output (W) high. This component is part of the HC series, known for its high-speed CMOS logic and wide operating voltage range.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | 2 | 5 | 6 | V |
| High-Level Input Voltage (VIH) | 1.5 (VCC=2V), 3.15 (VCC=4.5V), 4.2 (VCC=6V) | V | ||
| Low-Level Input Voltage (VIL) | 0.5 (VCC=2V), 1.35 (VCC=4.5V), 1.8 (VCC=6V) | V | ||
| Output Voltage (VO) | 0 | VCC | V | |
| Input Transition Rise/Fall Time | 1000 (VCC=2V), 500 (VCC=4.5V), 400 (VCC=6V) | ns | ||
| Operating Free-Air Temperature | -40 | 85 | °C | |
| Propagation Delay Time (tpd) | 13 (typical at VCC=5V) | 250 (max at VCC=2V) | ns | |
| Output Drive Current | -6 | 6 | mA | |
| Input Current | 1 | μA |
Key Features
- Wide operating voltage range of 2 V to 6 V
- Outputs can drive up to 10 LSTTL loads
- Low power consumption, 80-μA max ICC
- Typical propagation delay time (tpd) of 13 ns at VCC = 5 V
- ±6-mA output drive at 5 V
- Low input current of 1 μA max
- Can perform as Boolean-function generators, parallel-to-serial converters, and data source selectors
Applications
The SN74HC151DT is versatile and can be used in various applications, including:
- Boolean-function generators
- Parallel-to-serial converters
- Data source selectors
- General-purpose logic circuits requiring high-speed CMOS logic
Q & A
- What is the primary function of the SN74HC151DT?
The primary function is to act as an 8-line to 1-line data selector/multiplexer, providing full binary decoding to select one of eight data sources. - What is the operating voltage range of the SN74HC151DT?
The operating voltage range is from 2 V to 6 V. - How many LSTTL loads can the outputs drive?
The outputs can drive up to 10 LSTTL loads. - What is the typical propagation delay time (tpd) at VCC = 5 V?
The typical propagation delay time is 13 ns. - What is the maximum output drive current at 5 V?
The maximum output drive current is ±6 mA. - What are some common applications of the SN74HC151DT?
It can be used as Boolean-function generators, parallel-to-serial converters, and data source selectors. - What is the maximum input current?
The maximum input current is 1 μA. - What is the recommended operating temperature range?
The recommended operating temperature range is from -40°C to 85°C. - How does the strobe (G) input affect the outputs?
A low logic level at the strobe input enables the inputs, while a high level forces the standard output (Y) low and the inverted output (W) high. - What are the different package options available for the SN74HC151DT?
Package options include SOIC (D), PDIP (N), SOP (NS), and TSSOP (PW).
