74VHC240

Features:

`HIGHSPEED: tPD = 3.6 ns (TYP.) atVCC= 5V
`LOWPOWERDISSIPATION: ICC =4 A (MAX.) at TA =25
`HIGHNOISEIMMUNITY: VNIH=VNIL =28%VCC (MIN.)
`POWERDOWN PROTECTIONON INPUTS
`SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 8 mA(MIN)
`BALANCEDPROPAGATIONDELAYS: tPLH @ tPHL
`OPERATINGVOLTAGERANGE: VCC (OPR)= 2V to 5.5V
`PINANDFUNCTION COMPATIBLEWITH 74 SERIES240
`IMPROVEDLATCH-UP IMMUNITY
`LOWNOISE:VOLP = 0.9V(Max.)


Pinout




Specifications

SYMBOL	PARAMETER	Value	UNIT
VCC	Supply voltagee	0.5 to+ 7.0	V
VI	DC Input Voltage	0.5 to+ 7.0	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 Current	±25	mA
ICC or IGND	DC VCC or Ground Current	± 70	mA
Tstg	Storage temperature	65 to 150
TL	Lead Temperature (10 sec)	300

AbsoluteMaximumRatingsarethose values beyond whichdamage to the device may occur. Functional operation under these condition isnot implied.



Description

The 74VHC240 is an advanced high-speed CMOS OCTAL BUS BUFFER (3-STATE) fabricated with sub-micron silicon gate and double-layer metal wiring C²MOS technology. G output enable governs four BUS BUFFERs.

This device is designed to be used with 3 state memory address drivers, etc.

Power down protection is provided on all inputs and 0 to 7V can be accepted on inputs with no regard to the supply voltage. This device can be used to interface 5V to 3V.

All inputs and outputs of the 74VHC240 are equipped with protection circuits against static discharge, giving them 2KV ESD immunity and transient excess voltage.