The 74HC240D and 74HC244D are high speed CMOS OCTAL BUS BUFFERs fabricated with silicon gate C2MOS technology. They achieve the high speed operation similar to equivalent LSTTL while maintaining the CMOS low power dissipation. The 74HC240D is an inverting 3-state buffer and the 74HC244D are non-inverting 3-state buffers having two active-low output enables. These devices are designed to be used with 3-state memory address drivers, etc. All inputs are equipped with protection circuits against static discharge or transient excess voltage.

High speed: tpd = 10 ns (typ.) at VCC = 6.0 V
Low power dissipation: ICC = 4.0 μA (max) at Ta = 25 
Balanced propagation delays: tPLH ≈ tPHL
Wide operating voltage range: VCC(opr) = 2.0 V to 6.0 V

Select all	Attribute	Value
	Brand	Toshiba
	Logic Family	74HC
	Mounting Type	Surface Mount
	Package Type	SOIC
	Pin Count	20
	Maximum High Level Output Current	-7.8mA
	Maximum Low Level Output Current	7.8mA
	Maximum Propagation Delay Time @ Maximum CL	165 ns @ 150 pF
	Dimensions	13.1 x 7.5 x 2.25mm
	Maximum Operating Supply Voltage	6 V
	Height	2.25mm
	Width	7.5mm
	Length	13.1mm
	Minimum Operating Supply Voltage	2 V
	Minimum Operating Temperature	-40 °C
	Propagation Delay Test Condition	150pF
	Maximum Operating Temperature	+85 °C

	Select all
	Brand Toshiba
	Logic Family 74HC
	Mounting Type Surface Mount
	Package Type SOIC
	Pin Count 20
	Maximum High Level Output Current -7.8mA
	Maximum Low Level Output Current 7.8mA
	Maximum Propagation Delay Time @ Maximum CL 165 ns @ 150 pF
	Dimensions 13.1 x 7.5 x 2.25mm
	Maximum Operating Supply Voltage 6 V
	Height 2.25mm
	Width 7.5mm
	Length 13.1mm
	Minimum Operating Supply Voltage 2 V
	Minimum Operating Temperature -40 °C
	Propagation Delay Test Condition 150pF
	Maximum Operating Temperature +85 °C

Toshiba 74HC244D Octal Bus Buffer, 20-Pin SOIC

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