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74ACTQ657SC Folha de dados(PDF) 1 Page - Fairchild Semiconductor

Nome de Peças 74ACTQ657SC
Descrição Electrónicos  Quiet Series??Octal Bidirectional Transceiver with 8-Bit Parity Generator/Checker and 3-STATE Outputs
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Fabricante Electrônico  FAIRCHILD [Fairchild Semiconductor]
Página de início  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

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© 2000 Fairchild Semiconductor Corporation
DS010636
www.fairchildsemi.com
January 1990
Revised September 2000
74ACQ657 • 74ACTQ657
Quiet Series
 Octal Bidirectional Transceiver with
8-Bit Parity Generator/Checker and 3-STATE Outputs
General Description
The ACQ/ACTQ657 contains eight non-inverting buffers
with 3-STATE outputs and an 8-bit parity generator/
checker. Intended for bus oriented applications, the device
combines the 245 and the 280 functions in one package.
The ACQ/ACTQ utilizes Fairchild Quiet Series
 technol-
ogy to guarantee quiet output switching and improved
dynamic threshold performance. FACT Quiet Series fea-
tures GTO
 output control and undershoot corrector in
addition to a split ground bus or superior performance.
Features
s Guaranteed simultaneous switching noise level and
dynamic threshold performance
s Guaranteed pin-to-pin skew AC performance
s Combines the 245 and the 280 functions in one package
s 300 mil 24-pin slim dual-in-line package
s Outputs source/sink 24 mA
s ACTQ has TTL-compatible inputs
Ordering Code:
Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code
Logic Symbols
IEEE/IEC
Connection Diagram
Pin Descriptions
FACT
, Quiet Series, FACT Quiet Series, and GTO are trademarks of Fairchild Semiconductor Corporation.
Order Number
Package Number
Package Description
74ACQ657SPC
N24C
24-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
74ACTQ657SC
M24B
24-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
74ACTQ657SPC
N24C
24-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Pin Names
Description
A0–A7
Data Inputs/3-STATE Outputs
B0–B7
Data Inputs/3-STATE Outputs
T/R
Transmit/Receive Input
OE
Enable Input
PARITY
Parity Input/3-STATE Output
ODD/EVEN
ODD/EVEN Parity Input
ERROR
Error 3-STATE Output


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