© 1999 Fairchild Semiconductor Corporation DS010927 www.fairchildsemi.com
May 1991
Revised November 1999
7
4
AC
TQ165
40 16-
Bit
I
n
ver
ti
ng Buf
f
er
/Li
n
e
Dri
ver
w
i
th
3-
ST
A
T
E
O
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t
put
s
74ACTQ16540
16-Bit Inverting Buffer/Line Driver with 3-STATE Outputs
General Description
The ACTQ16540 contains sixteen 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 sep-
arate 3-STATE control inputs which can be shorted
together for full 16-bit operation.
The ACTQ16540 utilizes Fairchild Quiet Series technol-
ogy to guarantee quiet output switching and improved
dynamic threshold performance. FACT Quiet Series fea-
tures GTO output control for superior performance.
Features
a73 Utilizes Fairchild FACT Quiet Series technology
a73 Guaranteed simultaneous switching noise level and
dynamic threshold performance
a73 Guaranteed pin-to-pin output skew
a73 Separate control logic for each byte
a73 Outputs source/sink 24 mA
a73 Additional specs for multiple output switching
a73 Output loading specs for both 50 pF and 250 pF loads

Ordering Code:
Device also available in Tape and Reel Specify by appending suffix letter “X” to the ordering code.
Logic Symbol
Pin Descriptions
Connection Diagram
FACT, Quiet Series, FACT Quiet Series and GTO are trademarks of Fairchild Semiconductor Corporation.
Order Number Package Number Package Description
74ACTQ16540SSC MS48A 48-Lead Small Shrink Outline Package (SSOP), JEDEC MO-118, 0.300” Wide
74ACTQ16540MTD MTD48 48-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide
Pin
Description
Names
OE
n
Output Enable Input (Active LOW)
I
0
–I
15
Inputs
O
0
–O
15
Outputs