M74HC240

Features:

 HIGH SPEED t_PD = 10 ns (TYP.) at V_CC = 5V
 LOWPOWER DISSIPATION I_CC = 4 A (MAX.) at T_A = 25 oC
 HIGH NOISE IMMUNITY V_NIH = V_INL = 28 % V_CC (MIN.)
 OUTPUT DRIVE CAPABILITY 15 LSTTL LOADS
 SYMMETRICAL OUTPUT IMPEDANCE |I_OH| = I_OL = 6 mA (MIN)
 BALANCEDPROPAGATION DELAYS t_PLH = t_PHL
 WIDE OPERATING VOLTAGE RANGE V_CC (OPR) = 2V to 6V
 PIN AND FUNCTION COMPATIBLE WITH 54/74LS240/241/244


Pinout




Specifications

Symbol	Parameter	Value	Unit
VCC	Supply Voltage	-0.5 to +7	V
VI	DC Input Voltage	-0.5 to VCC + 0.5	V
VO	DC Output Voltage	-0.5 to VCC + 0.5	V
IIK	DC Input Diode Current	± 20	mA
IOK	DC Output Diode Current	± 20	mA
IO	DC Output Source Sink Current Per Output Pin	± 35	mA
ICC or IGND	DC VCC or Ground Current	± 70	mA
PD	Power Dissipation	500 (*)	mW
Tstg	Storage Temperature	-65 to +150	°C
TL	Lead Temperature (10 sec)	300	°C

AbsoluteMaximumRatings are those values beyond whichdamage tothe device may occur. Functional operation under these condition isnotimplied. (*) 500 mW:  65 oC derate to 300mWby 10mW/°C: 65 oC to85oC


Description

The M54/74HC240, HC241 and HC244 are high speed CMOS OCTAL BUS BUFFERs fabricated in silicon gate C²MOS technology.

They have the same high speed performance of LSTTL combined with true CMOS low power consumption.

The designer of M54/74HC240, HC241 and HC244 has a choise of select combination of inverting and non-inverting outputs, symmetrical G (active low output control) input, and complementary G and G inputs. Each control input governs four BUS BUFFERs.

These devices are designed to be used with 3 state memory address drivers, etc. All inputs are equipped with protection circuits against static discharge and transient excess voltage.