The 74ls368 Datasheet is your guide to understanding a crucial component in the world of digital electronics: the 74ls368 integrated circuit (IC). This document provides all the technical specifications, operating characteristics, and application information you need to effectively utilize this hex inverting bus driver with 3-state outputs in your projects.
Decoding the 74ls368 Datasheet The Power of Inversion
The 74ls368 is a member of the 74LS series of logic gates, known for their low-power Schottky technology. The ‘LS’ designation signifies this lower power consumption and improved speed compared to standard 7400 series chips. Specifically, the 74ls368 functions as a hex inverting bus driver, meaning it contains six independent inverting buffers. Each buffer takes an input signal and outputs its inverse. But here’s the kicker: it also features 3-state outputs. This 3-state capability is its most important characteristic, allowing you to connect multiple devices to a single bus and control which device is actively driving the line.
The 3-state, or tri-state, operation is controlled by an enable pin. When the enable pin is active (typically low for the 74ls368), the buffer operates normally, inverting the input signal. However, when the enable pin is inactive (typically high), the output goes into a high-impedance state. This high-impedance state effectively disconnects the output from the bus, allowing another device to take control. This is crucial in applications like:
- Memory addressing
- Data bus transceivers
- Multiplexing data from multiple sources
The datasheet provides critical information for properly implementing the 74ls368 in these applications. It will tell you parameters like:
- The required supply voltage (VCC).
- The input high and low voltage thresholds (Vih and Vil).
- The output high and low voltage levels (Voh and Vol).
- The propagation delay times (tPLH and tPHL) – how quickly the output responds to a change in input.
This information is vital for ensuring compatibility with other components in your circuit and for predicting the overall performance of your system. Below is a simplified table showing the pinout of the chip
| Pin Number | Function |
|---|---|
| 1 | Output 1 |
| 2 | Input 1 |
| 3 | Output Enable 1 & 2 |
| 14 | VCC |
| 7 | GND |
To truly master the 74ls368 and unlock its full potential, delving into the official datasheet is essential. The datasheet linked in the source provides the comprehensive information you need to design robust and reliable digital circuits.