Logic Gates | MM74HC540

Inverting Octal 3-STATE Buffers

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Overview

The MM74HC540 and MM74HC541 3-STATE buffers utilize advanced silicon-gate CMOS technology. They possess high drive current outputs which enable 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 MM74HC540 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# are HIGH, all eight outputs are in the high-impedance state. In order to enhance PC board layout, the MM74HC540 and MM74HC541 offers a pinout having inputs and outputs on opposite sides of the package. All inputs are protected from damage due to static discharge by diodes to VCC and ground.

  • This product is general usage and suitable for many different applications.

  • Typical propagation delay: 12 ns
  • 3-STATE outputs for connection to system buses
  • Wide power supply range: 2-6V
  • Low quiescent current: 80 µA maximum (74HC Series)
  • Output current: 6 mA

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MM74HC540MTC

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Last Shipments

CAD Model

Pb

A

H

P

TSSOP-20

9.48

1

260

TUBE

75

N

Buffer

8

2

6

12

7.8

Price N/A

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MM74HC540MTCX

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CAD Model

Pb

A

H

P

TSSOP-20

9.48

1

260

REEL

2500

N

Buffer

8

2

6

12

7.8

$0.2623

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MM74HC540WM

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CAD Model

Pb

A

H

P

SOIC-20W

751D-05

3

260

TUBE

38

N

Buffer

8

2

6

12

7.8

$0.354

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MM74HC540WMX

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Active

CAD Model

Pb

A

H

P

SOIC-20W

751D-05

3

260

REEL

1000

N

Buffer

8

2

6

12

7.8

$0.3353

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Reliability Data

Die Related Summary Data

Device: MM74HC540MTC

Equivalent to wafer fab process: CMOS SUB

Product Technology

Product Technology

Equivalent Device-Hours

MTBF/MTTF in Hours

FITS

CMOS SUB

2

920154574

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Re-calculate Data

Data is based on the following assumptions.

Note: The temperature and confidence level may be adjusted to your requirements.

Disclaimer: A reliability FIT rate calculated using this tool shall not be used for any functional safety purpose. In case a raw FIT rate needs to be estimated for a component which is targeted to be used in a safety critical application (i.e. compliant to ISO 26262 standard) it should be calculated according to generic safety standards (IEC62380, IEC61709, SN29500, FIDES, etc.)

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