The 74LS365 IC is a high-speed hex buffer with 3-state outputs. They are organized as single 6-bit or 2-bit / 4-bit, with inverting or non-inverting data (D) paths. The outputs are designed to drive 15 TTL Unit Loads or 60 Low Power Schottky loads when the Enable (E) is LOW. The output of the 74LS365 IC always comes in TTL config which makes it easy to work with other TTL devices and microcontrollers. The IC 74LS125 is smaller in size and it has a much faster speed which makes it reliable in every kind of device.
What is a Buffer Circuit?
A buffer is a basic logic gate that passes its input, unchanged, to its output. Its behavior is the opposite of a NOT gate. The main purpose of a buffer is to regenerate the input, usually using a strong high and a strong low. A buffer has one input and one output; its output is always equal to its input. Buffers are also used to increase the propagation delay of circuits by driving the large capacitive loads.
74LS365 Pinout
74LS365 Pin Configuration
| Pin No | Pin Name | Description |
|---|---|---|
| 1 | E1′ | Active Low Enable Pin 1 |
| 2 | 1A | Buffer input pin 1 |
| 3 | 1Y | Buffer output pin 1 |
| 4 | 2A | Buffer input pin 2 |
| 5 | 2Y | Buffer output pin 2 |
| 6 | 3A | Buffer input pin 3 |
| 7 | 3Y | Buffer output pin 3 |
| 8 | GND | Ground Pin |
| 9 | 4Y | Buffer output pin 4 |
| 10 | 4A | Buffer input pin 4 |
| 11 | 5Y | Buffer output pin 5 |
| 12 | 5A | Buffer input pin 5 |
| 13 | 6Y | Buffer output pin 6 |
| 14 | 6A | Buffer input pin 6 |
| 15 | E2′ | Active Low Enable Pin 2 |
| 16 | Vcc | Chip Supply Voltage |
74LS365 Features & Specifications
- Technology Family: LS
- VCC (Min): 4.75V
- VCC (Max): 5.25
- Channels (#): 4
- Operating Voltage (Nom): 5V
- Frequency at normal voltage (Max): 35MHz
- Propagation delay (Max): 20ns
- IOL (Max): 24mA
- IOH (Max):-2.6mA
- Input Type: Bi-polar
- Output type: 3-State
- High speed (tpd 10-50ns), Input clamp diode
- Rating: Catalog
- Data rate: 70Mbps
- Available in 16-pin PDIP, GDIP, PDSO packages
- Designed to Improve Performance and Density of Three-State Memory Address Drivers
- 3-State Outputs Drive Bus Lines
- Choice of True or Inverting Outputs
- Operating Temperature up to 70°C
- Standard TTL Switching Voltages
Applications
- Usually function as Clamping diodes at system inputs to simplify system design.
You can download this datasheet for 74LS365 Hex Bus Drivers/Buffers IC With 3-State Output from the link given below:
See Also: 74LS159 4 to 16 Decoder Demultiplexer | 74LS148 8 To 3 Line Priority Encoder IC – Datasheet | 74LS30 – 8 Input NAND Logic Gate IC – Datasheet
