SN74BCT574N ,Octal D-Type Edge-Triggered Flip-Flopsmaximum ratings over operating free-air temperature range (unless otherwise noted)Supply voltage ra ..
SN74BCT620AN ,OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS
SN74BCT623N , OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS
SN74BCT623N , OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS
SN74BCT640DW ,Octal Bus Transceiversmaximum ratings” may cause permanent damage to the device. These are stress ratings only, andfuncti ..
SN74BCT640N ,Octal Bus Transceivers SCBS025C − SEPTEMBER 1988 − REVISE ..
SN74LVTH240PWR ,3.3-V ABT Octal Buffers/Drivers With 3-State OutputsSN54LVTH240, SN74LVTH2403.3-V ABT OCTAL BUFFERS/DRIVERSWITH 3-STATE OUTPUTSSCBS679K − DECEMBER 1996 ..
SN74LVTH241DW ,3.3-V ABT Octal Buffers/Drivers With 3-State Outputs SCAS352K − MARCH 1994 − REVIS ..
SN74LVTH241PW ,3.3-V ABT Octal Buffers/Drivers With 3-State Outputs/sc/package.Please be aware that an important notice concerning availability, standard warranty, an ..
SN74LVTH241PW ,3.3-V ABT Octal Buffers/Drivers With 3-State Outputsmaximum ratings” may cause permanent damage to the device. These are stress ratings only, andfuncti ..
SN74LVTH241PWR ,3.3-V ABT Octal Buffers/Drivers With 3-State Outputsmaximum ratings over operating free-air temperature range (unless otherwise noted)Supply voltage ra ..
SN74LVTH244A ,3.3-V ABT Octal Buffers/Drivers With 3-State Outputslogic diagram (positive logic)1 191OE 2OE218 11 91A1 1Y1 2A1 2Y1416 13 71A2 1Y2 2A2 2Y2614 15 51Y3 ..
SN74BCT574DW-SN74BCT574N
Octal D-Type Edge-Triggered Flip-Flops
description/ordering informationThese 8-bit flip-flops feature 3-state outputs designed specifically for driving highly capacitive or relatively
low-impedance loads. They are particularly suitable for implementing buffer registers, I/O ports, bidirectional
bus drivers, and working registers.
The eight flip-flops of the ’BCT574 devices are edge-triggered D-type flip-flops. On the positive transition of the
clock (CLK) input, the Q outputs are set to the logic levels that were set up at the data (D) inputs.
A buffered output-enable (OE) input can be used to place the eight outputs in either a normal logic state (high
or low logic levels) or the high-impedance state. In the high-impedance state, the outputs neither load nor drive
the bus lines significantly. The high-impedance state and increased drive provide the capability to drive bus
lines without interface or pullup components.
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.
ORDERING INFORMATION Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
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.
