74LVT2244集成電路（IC）的緩沖器驅(qū)動器接收器收發(fā)器規(guī)格書PDF中文資料

1. General description

The 74LVT2244 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

The 74LVT2244 is designed with 30 Ω series resistance in both the HIGH and LOW states of the

output. This design reduces line noise in applications such as memory address drivers, clock

drivers, and bus receivers/transmitters.

2. Features and benefits

? Octal bus interface

? 3-state buffers

? Wide supply voltage range from 2.7 to 3.6 V

? Overvoltage tolerant inputs to 5.5 V

? BiCMOS high speed and output drive

? Output capability: +12 mA and -12 mA

? Direct interface with TTL levels

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

? Bus hold on data inputs

? Power-up 3-state

? IOFF circuitry provides partial Power-down mode operation

? Live insertion and extraction permitted

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

? ESD protection:

? HBM JESD22-A114E exceeds 2000 V

? MM JESD22-A115-A exceeds 200 V