SN54AC563 Datasheet | Texas Instruments

description /ordering information The ’AC563 devices are octal D-type transparent latches with 3-state outputs. When the latch-enable (LE) input is high, the Q outputs follow the plements of the data (D) inputs. When LE is taken low, the Q outputs are latched at the inverse logic levels set up at the 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 need for interface or pullup ponents. OE does not affect internal operations of the latches. Old data can be retained or new data can be entered while the outputs are in the high-impedance state. 8D 8Q SN54AC563, SN74AC563 OCTAL DĆTYPE TRANSPARENT LATCHES WITH 3ĆSTATE OUTPUTS SCAS552C - NOVEMBER 1995 - REVISED OCTOBER 2003 SN54AC563 . . . J OR W PACKAGE SN74AC563 . . . DB, DW, N, NS, OR PW PACKAGE (TOP VIEW) OE 1 1D 2 2D 3 3D 4 4D 5 5D 6 6D 7 7D 8 8D 9 GND 10 20 VCC 19 1Q 18 2Q 17 3Q 16 4Q 15 5Q 14 6Q 13 7Q 12 8Q 11 LE SN54AC563 . . . FK PACKAGE (TOP VIEW) 1Q 1D 2D 3 2 1 20 19 3D 4 18 2Q 4D 5 17 3Q 5D 6 16 4Q 6D 7 15 5Q 7D 8 14 6Q 9 10 11 12 13 7Q ORDERING INFORMATION PACKAGE†...