The 74LS series of integrated circuits (ICs) was one of the most popular logic families of transistor-transistor logic (TTL) logic chips. 74LS series is a bipolar, low-power Schottky IC. 74LS132 circuit functions as a 2-input NAND gate, but because of the Schmitt action, it has different input threshold levels for positive (VT+) and for negative-going (VT- signals).
74LS132 Features
- Four Independent NAND Gates
- Each Input has Hysteresis for Noise Immunity
- Jitter Free Output
- Operating Temperature up to 70°C
- Standard TTL Switching Voltages
74LS132 Specifications
| Supply Voltage | 4.75 – 5.25Vdc |
| Maximum Clock Frequency | 40Mhz |
| Power Dissipation | 2mW/gate @100kHz |
| Minimum Output Current | 8mA |
| Propagation Delay | 10nS |
| Fan Out (TTL Loads) | 20 |
74LS132 Pinout Diagram
74LS132 Pin Description
| Pin No | Pin Name | Description |
| 1 | 1A | Input 1 Of Schmitt Trigger 1 |
| 2 | 1B | Input 2 Of Schmitt Trigger 1 |
| 3 | 1Y | Output Of Schmitt Trigger 1 |
| 4 | 2A | Input 1 Of Schmitt Trigger 2 |
| 5 | 2B | Input 2 Of Schmitt Trigger 2 |
| 6 | 2Y | Output Of Schmitt Trigger 2 |
| 7 | GND | Ground |
| 8 | 3Y | Output Of Schmitt Trigger 3 |
| 9 | 3A | Input 1 Of Schmitt Trigger 3 |
| 10 | 3B | Input 2 Of Schmitt Trigger 3 |
| 11 | 4Y | Output Of Schmitt Trigger 4 |
| 12 | 4A | Input 1 Of Schmitt Trigger 4 |
| 13 | 4B | Input 2 Of Schmitt Trigger 4 |
| 14 | VCC | Positive Supply |
74LS132 Circuit
Applications
- Schmitt triggers are mainly used for changing a sine wave to a square wave.
- They must be utilized in the switch de-bouncer circuit for noisy otherwise slow input requirements like to be cleaned up or speed up
74LS132 Alternative Equivalent
74LS14, 74LS13
Download 74LS132 Quad 2-input NAND Schmitt Trigger Datasheet from the link given below.
