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74AC253PCX 数据表(PDF) 1 Page - Fairchild Semiconductor

部件名 74AC253PCX
功能描述  Dual 4-Input Multiplexer with 3-STATE Outputs
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制造商  FAIRCHILD [Fairchild Semiconductor]
网页  http://www.fairchildsemi.com
标志 FAIRCHILD - Fairchild Semiconductor

74AC253PCX 数据表(HTML) 1 Page - Fairchild Semiconductor

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© 1999 Fairchild Semiconductor Corporation
DS009946
www.fairchildsemi.com
November 1988
Revised November 1999
74AC253 • 74ACT253
Dual 4-Input Multiplexer with 3-STATE Outputs
General Description
The AC/ACT253 is a dual 4-input multiplexer with 3-STATE
outputs. It can select two bits of data from four sources
using common select inputs. The outputs may be individu-
ally switched to a high impedance state with a HIGH on the
respective Output Enable (OE) inputs, allowing the outputs
to interface directly with bus oriented systems.
Features
s ICC and IOZ reduced by 50%
s Multifunction capability
s Noninverting 3-STATE outputs
s Outputs source/sink 24 mA
s ACT253 has TTL-compatible inputs
Ordering Code:
Device also available Tape and Reel. Specify by appending suffix letter “X” to the ordering code.
Logic Diagrams
IEEE/IEC
Connection Diagram
Pin Descriptions
FACT
 is a trademark of Fairchild Semiconductor Corporation.
Order Number
Package Number
Package Description
74AC253SC
M16A
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150” Narrow Body
74AC253SJ
M16D
16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74AC253PC
N16E
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide
74ACT253SC
M16A
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150” Narrow Body
74ACT253SJ
M16D
16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74ACT253PC
N16E
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide
Pin Names
Description
I0a–I3a
Side A Data Inputs
I0b–I3b
Side B Data Inputs
S0, S1
Common Select Inputs
OEa
Side A Output Enable Input
OEb
Side B Output Enable Input
Za, Zb
3-STATE Outputs


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