74LVT244B集成電路（IC）的緩沖器驅(qū)動(dòng)器接收器收發(fā)器規(guī)格書(shū)PDF中文資料

1. General description

The 74LVT244B; 74LVTH244B 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. Bus hold data inputs eliminate the need for external pull-up resistors to

define unused inputs

2. Features and benefits

? Octal bus interface

? 3-state buffers

? Speed upgrade of 74LVT244A

? Wide supply voltage range from 2.7 to 3.6 V

? BiCMOS high speed and output drive

? Output capability: +64 mA and -32 mA

? Direct interface with TTL levels

? Overvoltage tolerant inputs to 5.5 V

? Input and output interface capability to systems at 5 V supply

? Bus hold data inputs eliminate need for external pull-up resistors to hold unused inputs

? No bus current loading when output is tied to 5 V bus

? Power-up 3-state

? Live insertion and extraction permitted

? IOFF circuitry provides partial Power-down mode operation

? Latch-up performance exceeds 500 mA per JESD 78 Class II Level B

? Complies with JEDEC standards

? JESD8C (2.7 V to 3.6 V)

? ESD protection:

? HBM EIA/JESD22-A114-C exceeds 2000 V

? MM EIA/JESD22-A115-A 200 V

? Specified from -40 °C to +85 °C