SN54AC563, SN74AC563 OCTAL D-TYPE TRANSPARENT LATCHES WITH 3-STATE OUTPUTS

SCAS552A - NOVEMBER 1995 - REVISED MAY 1996

features

• 3-State Inverting Outputs Drive Bus Lines Directly
• Full Parallel Access for Loading
• Flow-Through Architecture to Optimize PCB Layout
• EPIC^TM (Enhanced-Performance Implanted CMOS) 1-m Process
• Package Options Include Plastic Small-Outline (DW), Shrink Small-Outline (DB), Thin Shrink Small-Outline (PW), Ceramic Chip Carriers (FK) and Flatpacks (W), and Standard Plastic (N) and Ceramic (J) DIPs

   

  EPIC is a trademark of Texas Instruments Incorporated.

description

The 'AC563 are octal D-type transparent latches with 3-stateoutputs. When the latch-enable (LE) input is high, the Q\ outputsfollow the complements of the data (D) inputs. When LE is taken low,the Q\ outputs are latched at the inverse logic levels set up at theD inputs.

A buffered output-enable () input can be used to place the eight outputs in eithera normal logic state (high or low logic levels) or the high-impedancestate. In the high-impedance state, the outputs neither load nordrive the bus lines significantly. The high-impedance state andincreased drive provide the capability to drive bus lines withoutneed for interface or pullup components.

does not affectinternal operations of the latches. Old data can be retained or newdata can be entered while the outputs are in the high-impedancestate.

The SN54AC563 is characterized for operation over the fullmilitary temperature range of -55°C to 125°C. The SN74AC563is characterized for operation from -40°C to 85°C.

View more information about generic part numbers:SN74AC563

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