
NXP Semiconductors.
General description
The 74HC244; 74HCT244 is an 8-bit buffer/line driver with 3-state outputs. The device can be used as two 4-bit buffers or one 8-bit buffer. The device features two output enables (1OE and 2OE), each controlling four of the 3-state outputs. A HIGH on nOE causes the outputs to assume a high-impedance OFF-state. Inputs include clamp diodes that enable the use of current limiting resistors to interface inputs to voltages in excess of VCC.
FEATUREs and benefits
■ Input levels:
◆ For 74HC244: CMOS level
◆ For 74HCT244: TTL level
■ Octal bus interface
■ Non-inverting 3-state outputs
■ Complies with JEDEC standard no. 7 A
■ ESD protection:
◆ HBM JESD22-A114F exceeds 2000 V
◆ MM JESD22-A115-A exceeds 200 V
■ Multiple package options
■ Specified from -40 °C to +85 °C and -40 °C to +125 °C