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What is 74ACTQ543?

This electronic component, produced by the manufacturer "Fairchild Semiconductor", performs the same function as "Quiet Series Octal Registered Transceiver with 3-STATE Outputs".


74ACTQ543 Datasheet PDF - Fairchild Semiconductor

Part Number 74ACTQ543
Description Quiet Series Octal Registered Transceiver with 3-STATE Outputs
Manufacturers Fairchild Semiconductor 
Logo Fairchild Semiconductor Logo 


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January 1990
Revised August 2000
74ACQ54374ACTQ543
Quiet SeriesOctal Registered Transceiver
with 3-STATE Outputs
General Description
The ACQ/ACTQ543 is a non-inverting octal transceiver
containing two sets of D-type registers for temporary stor-
age of data flowing in either direction. Separate Latch
Enable and Output Enable inputs are provided for each
register to permit independent input and output control in
either direction of data flow.
The ACQ/ACTQ utilizes Fairchild Quiet Seriestechnol-
ogy to guarantee quiet output switching and improved
dynamic threshold performance FACT Quiet Seriesfea-
tures GTOoutput control and undershoot corrector in
addition to a split ground bus for superior performance.
Features
s Guaranteed simultaneous switching noise level and
dynamic threshold performance
s Guaranteed pin-to-pin skew AC performance
s 8-bit 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
s 300 mil slim PDIP/SOIC
Ordering Code:
Order Number Package Number
Package Description
74ACQ543SC
M24B
24-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
74ACQ543SPC
N24C
24-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
74ACTQ543SC
M24B
24-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
74ACTQ543QSC
MQA24
24-Lead Quarter Size Outline Package (QSOP), JEDEC MO-137, 0.150 Wide
74ACTQ543SPC
N24C
24-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Device also available in Tape and Reel. Specify by appending suffix letter “X” to the order code.
Connection Diagram
Pin Descriptions
Pin Names
Description
OEAB
OEBA
CEAB
CEBA
LEAB
LEBA
A0A7
B0B7
A-to-B Output Enable Input (Active LOW)
B-to-A Output Enable Input (Active LOW)
A-to-B Enable Input (Active LOW)
B-to-A Enable Input (Active LOW)
A-to-B Latch Enable Input (Active LOW)
B-to-A Latch Enable Input (Active LOW)
A-to-B Data Inputs or
B-to-A 3-STATE Outputs
B-to-A Data Inputs or
A-to-B 3-STATE Outputs
FACT, Quiet Series, FACT Quiet Seriesand GTOare trademarks of Fairchild Semiconductor Corporation.
© 2000 Fairchild Semiconductor Corporation DS010154
www.fairchildsemi.com

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74ACTQ543 equivalent
AC Electrical Characteristics for AC
VCC
TA = +25°C
TA = −40°C to +85°C
Symbol
Parameter
(V) CL = 50 pF
CL = 50 pF
Units
(Note 13)
Min
Typ
Max
Min
Max
tPLH Propagation Delay
tPHL Transparent Mode
An to Bn or Bn to An
tPLH Propagation Delay
tPHL LEBA, LEAB to An, Bn
tPZH Output Enable Time
tPZL OEBA or OEAB to An or Bn
CEBA or CEAB to An or Bn
tPHZ Output Disable Time
tPLZ OEBA or OEAB to An or Bn
CEBA or CEAB to An or Bn
tOSHL
Output to Output
tOSLH
Skew (Note 14)
Note 13: Voltage Range 5.0 is 5.0V ± 0.5V
3.3 1.5 8.0 11.0 1.5 11.5
5.0 1.5 5.0 7.0 1.5 7.5
3.3 1.5 9.0 12.5 1.5 13.0
5.0 1.5 6.0 8.0 1.5 8.5
3.3
1.5
10.5
15.0
1.5
15.5
5.0 1.5 7.0 9.5 1.5 10.0
3.3 1.0 8.0 11.0 1.0 11.5
5.0 1.0 5.0 7.0 1.0 7.5
3.3 1.0 1.5 1.5
5.0 0.5 1.0 1.0
ns
ns
ns
ns
ns
Voltage Range 3.3 is 3.3V ± 0.3V
Note 14: Skew is defined as the absolute value of the difference between the actual propagation delay for any two outputs within the same packaged device.
The specification applies to any outputs switching in the same direction, either HIGH-to-LOW (tOSHL) or LOW-to-HIGH (tOSLH). Parameter guaranteed by
design. Not tested.
AC Operating Requirements for AC
Symbol
Parameter
tS Setup Time, HIGH or LOW
An or Bn to LEBA or LEAB
tH Hold Time, HIGH or LOW
An or Bn to LEBA or LEAB
tW Latch Enable
Pulse Width, LOW
Note 15: Voltage Range 5.0 is 5.0V ± 0.5V
Voltage Range 3.3 is 3.0V ± 0.3V
VCC
(V)
(Note 15)
3.3
5.0
3.3
5.0
3.3
5.0
TA = +25°C
TA = −40°C to +85°C
CL = 50 pF
CL = 50 pF
Typ Guaranteed Minimum
3.0 3.0
1.5 1.5
4.0 4.0
Units
ns
ns
ns
5 www.fairchildsemi.com


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