LVC244AQ Datasheet | Texas Instruments

description /ordering information This octal buffer/line driver is operational at 1.5-V to 3.6-V VCC, but is designed specifically for 1.65-V to 3.6-V VCC operation. The SN74LVC244A is organized as two 4-bit line drivers with separate output-enable (OE) inputs. When OE is low, the device passes data from the A inputs to the Y outputs. When OE is high, the outputs are in the high-impedance state. Inputs can be driven from either 3.3-V or 5-V devices. This feature allows the use of this device as a translator in a mixed 3.3-V/5-V system environment. To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down. ORDERING INFORMATION† PACKAGE‡ ORDERABLE PART NUMBER TOP-SIDE MARKING - 40°C to 125°C SOIC - DW TSSOP - PW Reel of 2000 Reel of 2000 SN74LVC244AQDWRQ1 LVC244AQ SN74LVC244AQPWRQ1 LVC244AQ † For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI web site at .ti.. ‡ Package drawings, thermal data, and symbolization are available at .ti./packaging. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. - POST OFFICE BOX 655303 DALLAS, TEXAS 75265 Copyright © 2008, Texas Instruments Incorporated 1 SN74LVC244A-Q1 OCTAL BUFFER/DRIVER WITH...