Octal 3-state Inverting Buffer IC - 74HC540
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Octal 3-state Inverting Buffer IC - 74HC540 The 74HC Series 74HC540 is a 20 Pin Octal 3-state Inverting Buffer IC having a 2V to 6V Operating Voltage range with a 6mA output current. The 3-STATE buffers utilize advanced silicon-gate CMOS technology. They possess high drive current outputs, enabling high-speed operation even when driving large bus capacitances. These circuits achieve speeds comparable to low-power Schottky devices while retaining the advantage of CMOS circuitry, i.e., high noise immunity, and low power consumption. Both devices have a fanout of 15 LS-TTL equivalent inputs. The 74HC540 is an inverting buffer and the MM74HC541 is a non-inverting buffer. The 3-STATE control gate operates as a two-input NOR such that if either G1 or G2 is HIGH, all eight outputs are in the high-impedance state. Pinout: Pinout Of 74HC540 IC
- Octal 3-state inverting buffer with 8 inputs and 8 outputs
- Operating voltage: 2V to 6V (ideal for 5V systems)
- High-speed CMOS technology with low power consumption
- Compatible with Arduino and Raspberry Pi (with level shifter)
- 20-pin DIP package for easy breadboard integration
- High noise immunity and TTL-compatible inputs
- Inverting logic with 3-state outputs
- Two active-LOW enable inputs (G1, G2)
- High-impedance state for bus isolation
- Low power consumption
- Fast propagation delay
- Wide operating temperature range
| Supply Voltage | ? 0.5 to + 7.0V |
|---|---|
| DC Input Voltage | –0.5 to VCC + 0.5 |
| DC Output Voltage | ?0.5 ? VO ? VCC + 0.5 |
| DC Input Diode Current | ±20 mA |
| DC Output Diode Current | ±35 mA |
| Output Current | ± 35 mA |
| DC VCC or GND Current, per pin | ± 75 mA |
| Storage Temperature Range | ? 65°C to + 150 °C |
| Power Dissipation | 500 mW |
| Lead Temperature | 260 °C |
What is the operating voltage range of the 74HC540?
The 74HC540 operates from 2V to 6V, making it compatible with standard 5V logic systems.
Can the 74HC540 be used with Arduino or Raspberry Pi?
Yes, it works with 5V microcontrollers like Arduino. For Raspberry Pi (3.3V), use a logic level shifter to avoid damage.
What does 3-state output mean in the 74HC540?
3-state outputs can be HIGH, LOW, or high-impedance (disconnected), enabling safe bus sharing in digital systems.
How many inputs and outputs does the 74HC540 have?
It has 8 inputs and 8 inverting 3-state outputs, organized as an octal buffer.
What is the HSN code for the 74HC540 IC?
The HSN code is 85423990, classified under electronic integrated circuits.
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About Octal 3-state Inverting Buffer IC - 74HC540 by Iotcart
Buy 74HC540 Octal 3-State Inverting Buffer IC online. Compatible with Arduino, Raspberry Pi. Low power, high-speed CMOS logic.
Categorised under: 74HC IC Series› Integrated Circuits