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Specifications
SKU: 1810017
QUAD 2 CHANNEL MULTIPLEXER
Below is the parameter table and instructions for the HC158, which is a 1-of-8 data selector/multiplexer.
HC158 Parameter Table
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions |
|---|---|---|---|---|---|---|
| Supply Voltage | VCC | 4.5 | 5.0 | 5.5 | V | |
| Input Low Voltage | VIL | 0.0 | 0.8 | 1.5 | V | VCC = 5V |
| Input High Voltage | VIH | 3.5 | 4.2 | 5.0 | V | VCC = 5V |
| Output Low Voltage | VOL | 0.0 | 0.1 | 0.4 | V | IOL = 16mA, VCC = 5V |
| Output High Voltage | VOH | 2.7 | 3.4 | 5.0 | V | IOH = -4mA, VCC = 5V |
| Input Leakage Current | IIL | -1 | 0 | 1 | μA | VCC = 5V |
| Output Leakage Current | IOL | -50 | 0 | 50 | μA | VCC = 5V |
| Propagation Delay Time | tpd | 9 | 12 | 15 | ns | VCC = 5V, TA = 25°C |
| Power Dissipation | Ptot | - | 100 | - | mW | VCC = 5V, TA = 25°C |
| Operating Temperature Range | TA | -40 | 25 | 85 | °C |
HC158 Instructions
Pin Configuration:
- Pin 1 (A0): Address input 0
- Pin 2 (A1): Address input 1
- Pin 3 (A2): Address input 2
- Pin 4 (GND): Ground
- Pin 5 (Y0): Output 0
- Pin 6 (Y1): Output 1
- Pin 7 (Y2): Output 2
- Pin 8 (Y3): Output 3
- Pin 9 (Y4): Output 4
- Pin 10 (Y5): Output 5
- Pin 11 (Y6): Output 6
- Pin 12 (Y7): Output 7
- Pin 13 (E): Enable (active low)
- Pin 14 (VCC): Positive supply voltage
Functionality:
- The HC158 is a 1-of-8 data selector/multiplexer that allows one of eight input signals to be selected based on the address inputs A0, A1, and A2.
- The enable pin (E) must be low for the device to operate. If E is high, all outputs are high impedance.
- The output corresponding to the binary value of the address inputs is selected and driven to the output level (high or low).
Addressing:
- A0, A1, A2 determine which of the eight outputs (Y0 to Y7) is selected.
- For example, if A0 = 0, A1 = 1, and A2 = 0, then Y2 is selected.
Power Supply:
- Connect VCC to +5V and GND to ground.
- Ensure that the power supply is stable and within the specified range to avoid damage to the device.
Input and Output Levels:
- Inputs should be within the specified VIL and VIH levels.
- Outputs will be either high (VOH) or low (VOL) depending on the selected input.
Propagation Delay:
- The time delay between a change in the address inputs and the corresponding change in the output is given by tpd.
Handling:
- Handle the device with care to avoid static discharge, which can damage the internal circuits.
- Store the device in a dry, cool place when not in use.
By following these instructions, you can effectively use the HC158 in your digital circuits.
(For reference only)Inquiry - HC158
