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74ACTQ544 Datasheet(PDF) 1 Page - Fairchild Semiconductor

Part # 74ACTQ544
Description  Quiet Series??Octal Registered Transceiver with 3-STATE Outputs
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Manufacturer  FAIRCHILD [Fairchild Semiconductor]
Direct Link  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

74ACTQ544 Datasheet(HTML) 1 Page - Fairchild Semiconductor

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© 2000 Fairchild Semiconductor Corporation
DS010685
www.fairchildsemi.com
March 1990
Revised September 2000
74ACQ544 • 74ACTQ544
Quiet Series
 Octal Registered Transceiver
with 3-STATE Outputs
General Description
The ACQ/ACTQ544 is an inverting octal transceiver con-
taining two sets of D-type registers for temporary storage of
data flowing in either direction. Separate Latch Enable and
Output Enable inputs are provided for each register to per-
mit independent input and output control in either direction
of data flow. The 544 inverts data in both directions.
The ACQ/ACTQ utilizes Fairchild FACT Quiet Series
technology to guarantee quiet output switching and
improved dynamic threshold performance. FACT Quiet
Series features GTO
 output control and undershoot cor-
rector in addition to a split ground bus for superior perfor-
mance.
Features
s Guaranteed simultaneous switching noise level and
dynamic threshold performance
s Guaranteed pin-to-pin skew AC performance
s 8-bit inverting octal latched transceiver
s Separate controls for data flow in each direction
s Back-to-back registers for storage
s Outputs source/sink 24 mA
Ordering Code:
Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code.
Connection Diagram
Pin Descriptions
FACT
, Quiet Series, FACT Quiet Series and GTO are trademarks of Fairchild Semiconductor Corporation.
Order Number
Package Number
Package Description
74ACQ544SC
M24B
24-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
74ACQ544SPC
N24C
24-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
74ACTQ544SC
M24B
24-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
74ACTQ544SPC
N24C
24-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Pin Names
Description
OEAB
A-to-B Output Enable Input (Active LOW)
OEBA
B-to-A Output Enable Input (Active LOW)
CEAB
A-to-B Enable Input (Active LOW)
CEBA
B-to-A Enable Input (Active LOW)
LEAB
A-to-B Latch Enable Input (Active LOW)
LEBA
B-to-A Latch Enable Input (Active LOW)
A0 –A7
A-to-B Data Inputs or
B-to-A 3-STATE Outputs
B0 –B7
B-to-A Data Inputs or
A-to-B 3-STATE Outputs


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