The 74LS151 HLF is a high-speed 8-input digital multiplexer from the 74LS series. It is commonly used in digital circuits to select one of eight data sources and route it to a single output line. Built using low-power Schottky TTL technology, this IC provides high-speed operation while minimizing power consumption.

Key Features

• High-Speed Operation: Schottky diode clamping ensures faster switching speeds.
• 8-to-1 Multiplexer: Select one of eight inputs using three binary control inputs.
• Complementary Outputs: Provides both true (Z) and inverted (Z) outputs.
• On-Chip Select Logic Decoding: Simplifies circuit design.
• TTL Compatible: Designed for easy interfacing with TTL logic circuits.

Package Includes

• 1 x IC 74LS151 HLF – 8-Input Multiplexer TTL Logic IC

Specifications

• Model Number: 74LS151 HLF
• Logic Type: Multiplexer
• Number of Channels: 8
• Control Inputs: 3-bit select lines (S0, S1, S2)
• Output Type: True (Z) and Complement (Z)
• Supply Voltage (Vcc): 4.75V – 5.25V
• Input High Voltage (VIH): Min 2V
• Input Low Voltage (VIL): Max 0.8V
• Output High Voltage (VOH): Min 2.7V
• Output Low Voltage (VOL): Max 0.5V
• Propagation Delay: Approx. 15ns
• Operating Temperature: 0C to +70C
• Package Type: DIP-16 (Dual In-line Package)

Usage Instructions

• Pin Configuration: Connect the data inputs (I0-I7) to the corresponding signals, and use the select lines (S0, S1, S2) to control which input is routed to the output.
• Power Supply: Connect Vcc (Pin 16) to +5V and GND (Pin 8) to ground.
• Enable Input (E): Set to LOW to activate the multiplexer; setting HIGH disables the output.
• Output Handling: The selected input is transmitted to Z, while the complement is available at Z.

Datasheet

For more technical details, please refer to the official datasheet:

Download 74LS151 HLF Datasheet (PDF)