Skip to product information
1 of 2


Octal 3-state Inverting Buffer IC - 74HC540

Octal 3-state Inverting Buffer IC - 74HC540

Regular price Rs. 23
Regular price Rs. 32 Sale price Rs. 23
Sale Sold out 28% off Best Price Guaranteed
You save Rs. 9
Incl. GST (No Hidden Charges)
Currently, people are actively checking out this product.
Submit your Bulk Enquiry Here

Contact form

  • Output Drive Capability: 15 LSTTL Loads
  • Outputs Directly Interface to CMOS, NMOS, and TTL
  • Operating Voltage Range: 2.0 to 6.0 V
  • Low Input Current: 1 A
  • High Noise Immunity Characteristic of CMOS Devices
  • In Compliance With the JEDEC Standard No. 7 A Requirements
  • Chip Complexity: 124 FETs or 31 Equivalent Gates
  • NLV Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AEC−Q100 Qualified and PPAP Capable
  • These Devices are Pb−Free and are RoHS Compliant

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 Of 74HC540 IC

Package Includes:

  • 1 x IC - 74HC540


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

Shipping & Returns

  • All orders confirmed before 3 pm IST are shipped on the
    same day, barring rare pickup delays on holidays or disturbances
  • Delivery time in Metro cities is 1-3 days, Others it is
    3-7 days. It varies based on location, reliant on courier services
  • Return window: 7 days from receipt unless stated
    otherwise. No refunds/replacements after
  • Returns only for non-working/damaged products are accepted
  • Initiate return requests to our customer service team via Support ticket or contact us at +91-8123057137
  • Refunds are processed within 3-4 working days post inspection and approval.

For more details, please check our Shipping and Return Policy

View full details

Found a better price?

Let us know!
We'll try to match the price for you

  • ⚡ Dispatched within 24 hours

  • 💰 Earn RC Coins on every purchase

  • 🚚 Free shipping on orders above Rs 500/-

  • 🛠️ Dedicated Technical Support Team

1 of 4


1.What is the purpose of the output enable (OE) pin on the 74HC540?

  • The output enable (OE) pin controls whether the 74HC540's outputs are disabled or enabled. The outputs are disabled when the OE pin is high, and enabled when it is low. This feature can be useful for reducing power consumption or interacting with other systems that may require the outputs to be disabled at times.

2.What is the use of 74HC540?

  • The 74HC540 is an octal buffer/line driver integrated circuit (IC) that is commonly used for driving high-impedance loads or interfacing systems with different voltage levels.