1. General description

The 74LVC2244A 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 can be driven from either 3.3 V or 5 V devices. This feature

allows the use of these devices as translators in mixed 3.3 V and 5 V environments.

Schmitt-trigger action at all inputs makes the circuit tolerant of slower input rise and fall times.

This device is fully specified for partial power down applications using IOFF. The IOFF circuitry

disables the output, preventing the potentially damaging backflow current through the device when

it is powered down.

2. Features and benefits

? Overvoltage tolerant inputs to 5.5 V

? Wide supply voltage range from 1.2 V to 3.6 V

? CMOS low-power consumption

? Direct interface with TTL levels

? Integrated 30 Ω termination resistors

? IOFF circuitry provides partial Power-down mode operation

? Complies with JEDEC standard:

? JESD8-7A (1.65 V to 1.95 V)

? JESD8-5A (2.3 V to 2.7 V)

? JESD8-C/JESD36 (2.7 V to 3.6 V)

? ESD protection:

? HBM JESD22-A114F exceeds 2000 V

? MM JESD22-A115B exceeds 200 V

? CDM JESD22-C101E exceeds 1000 V

? Specified from -40 °C to +85 °C and -40 °C to +125 °C

74LVC2244ABQ屬于集成電路（IC） > 緩沖器，驅(qū)動器，接收器，收發(fā)器。安世半導(dǎo)體(中國)有限公司制造生產(chǎn)的74LVC2244ABQ緩沖器，驅(qū)動器，接收器，收發(fā)器邏輯緩沖器、驅(qū)動器、接收器和收發(fā)器允許隔離對某個電路的邏輯信號的訪問，以用于另一電路。緩沖器將其輸入信號（不變或反相）傳遞到其輸出，并可能用于清除弱信號或驅(qū)動負(fù)載。在布爾邏輯仿真器中，緩沖器主要用于增加傳播延遲。邏輯接收器和收發(fā)器允許在數(shù)據(jù)總線之間進(jìn)行隔離通信。