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Updated at 01/11/2025 10:30:15(UTC+8)

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Description

The CD74HC540E is an inverting octal Buffer/Line Driver with 3-state outputs and the capability to drive 15 LSTTL loads. The output enables (OE1\\) and (OE2\\) control the 3-state outputs. If either OE1\ or OE2\ is HIGH the outputs will be in the high impedance state. For data output OE1\ and OE2\ both must be LOW.
Buffered inputs
Bus line driving capability
Balanced propagation delay and transition times
Significant power reduction compared to LSTTL logic ICs
High noise immunity - NIL = 30%, NIH = 30% of VCC at VCC = 5V
Typical propagation delay = 9ns at VCC = 5V, CL = 15pF, TA = 25°C
Standard outputs - 10 LSTTL loads
Bus driver outputs - 15 LSTTL loads

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CD74HC540E Specifications

Attribute	Attribute Value

Datasheet	Datasheet
3D Model	3D Model
Mounting Style	Through Hole
Number of Pins	20 Pin
Case/Package	PDIP-20
Supply Voltage (DC)	5.00 V, 6.00 V (max)
Number of Outputs	8 Output
Number of Circuits	1 Circuit
Number of Channels	8 Channel
Number of Positions	20 Position
Number of Bits	8 Bit
Number of Inputs	8 Input
Operating Temperature (Max)	125 ℃
Operating Temperature (Min)	-55 ℃
Supply Voltage	2V ~ 6V
Supply Voltage (Max)	6 V
Supply Voltage (Min)	2 V
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Size-Length	26.92 mm
Size-Width	6.6 mm
Size-Height	4.57 mm
Operating Temperature	-55℃ ~ 125℃
Product Lifecycle Status	Active
Packaging	Tube
RoHS	RoHS Compliant
Lead-Free Status	Lead Free
REACH SVHC Compliance	No SVHC
REACH SVHC Compliance Edition	2015/06/15

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