HC74HC444

Features:

·  High Speed Operation
·  High Output Current: Fanout of 15 LSTTL Loads
·  Wide Operating Voltage: VCC = 2 to 6 V
·  Low Input Current: 1 µA max
·  Low Quiescent Supply Current: ICC (static) = 4 µA max (Ta = 25°C)


Pinout




Specifications

Item	Symbol	Rating	Unit
Supply voltage range	VCC	0.5 to +7.0	V
Input voltage	VIN	0.5 to VCC + 0.5	V
Output voltage	VOUT	0.5 to VCC + 0.5	V
Output current	IOUT	±35	mA
DC current drain per VCC, GND	ICC, IGND	±75	mA
DC input diode current	IIK	±20	mA
DC output diode current	IOK	±20	mA
Power dissipation per package	PT	500	mW
Storage temperautre	Tstg	65 to +150

Description

These HC74HC444 bus transceivers are designed for a synchronous three-way communication between four-line data buses. They give the designer a choice of selecting inverting, noninverting or a combination of inverting and noninverting data paths with 3-state outputs.

The S0 and S1 inputs select the HC74HC444 bus from which data are to be transferred. The G inputs enable the bus or buses to which data are to be transferred. The port for any bus selected for input and any other bus not enabled for output will be at high impedance.