74ACTQ18825 18-Bit Buffer/Line Driver with 3-STATE Outputs

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74ACTQ18825 18-Bit Buffer/Line Driver with 3-STATE Outputs

September 1991 Revised January 2000

74ACTQ18825 18-Bit Buffer/Line Driver with 3-STATE Outputs
General Description
The ACTQ18825 contains eighteen non-inverting buffers with 3-STATE outputs designed to be employed as a memory and address driver, clock driver, or bus oriented transmitter/receiver. The device is byte controlled. Each byte has separate 3-STATE control inputs which can be shorted together for full 18-bit operation. The ACTQ18825 utilizes Fairchild FACT Quiet SeriesTM technology to guarantee quiet output switching and improved dynamic threshold performance. FACT Quiet Series features GTOTM output control and undershoot corrector for superior performance.

Features
s Utilizes Fairchild FACT Quiet Series technology s Broadside pinout allows for easy board layout s Guaranteed simultaneous switching noise level and dynamic threshold performance s Guaranteed pin-to-pin output skew s Separate control logic for each byte s Extra data width for wider address/data paths or buses carrying parity s Outputs source/sink 24 mA s Additional specs for Multiple Output Switching s Output loading specs for both 50 pF and 250 pF loads

Ordering Code:
Order Number 74ACTQ18825SSC 74ACTQ18825MTD Package Number MS56A MTD56 Package Description 56-Lead Shrink Small Outline Package (SSOP), JEDEC MO-118, 0.300" Wide 56-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide

Device also available in Tape and Reel. Specify by appending suffix letter "X" to the ordering code.

Logic Symbol

Pin Descriptions
Pin Names OEn I0 I17 O0 O17 Description Output Enable Input (Active LOW) Inputs Outputs

FACTTM, FACT Quiet SeriesTM and GTOTM are trademarks of Fairchild Semiconductor Corporation.

2000 Fairchild Semiconductor Corporation

DS010955

www.fairchildsemi.com

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74ACTQ18825 DATASHEET