Electronic Components Datasheet Search
  English  ▼

Delete All
ON OFF
ALLDATASHEET.COM

X  

Preview PDF Download HTML

74LCX16543 Datasheet(PDF) 2 Page - Fairchild Semiconductor

Part No. 74LCX16543
Description  Low Voltage 16-Bit Registered Transceiver with 5V Tolerant Inputs and Outputs
Download  9 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Maker  FAIRCHILD [Fairchild Semiconductor]
Homepage  http://www.fairchildsemi.com
Logo 

74LCX16543 Datasheet(HTML) 2 Page - Fairchild Semiconductor

   
Zoom Inzoom in Zoom Outzoom out
 2 / 9 page
background image
www.fairchildsemi.com
2
Pin Descriptions
Data I/O Control Table
H
= HIGH Voltage Level
L
= LOW Voltage Level
X
= Immaterial
A-to-B data flow shown; B-to-A flow control is the same, except using CEBAn, LEBAn and OEBAn
Functional Description
The LCX16543 contains sixteen non-inverting transceivers
with 3-STATE outputs. The device is byte controlled with
each byte functioning identically, but independent of the
other. The control pins may be shorted together to obtain
full 16-bit operation. The following description applies to
each byte. For data flow from A to B, for example, the
A-to-B Enable (CEABn) input must be LOW in order to
enter data from A0–A15 or take data from B0–B15, as indi-
cated in the Data I/O Control Table. With CEABn LOW, a
LOW signal on the A-to-B Latch Enable (LEABn) input
makes the A-to-B latches transparent; a subsequent LOW-
to-HIGH transition of the LEABn signal puts the A latches in
the storage mode and their outputs no longer change with
the A inputs. With CEABn and OEABn both LOW, the
3-STATE B output buffers are active and reflect the data
present at the output of the A latches. Control of data flow
from B to A is similar, but using the CEBAn, LEBAn and
OEBAn inputs.
Pin Names
Description
OEABn
A-to-B Output Enable Input (Active LOW)
OEBAn
B-to-A Output Enable Input (Active LOW)
CEABn
A-to-B Enable Input (Active LOW)
CEBAn
B-to-A Enable Input (Active LOW)
LEABn
A-to-B Latch Enable Input (Active LOW)
LEBAn
B-to-A Latch Enable Input (Active LOW)
A0–A15
A-to-B Data Inputs or B-to-A 3-STATE Outputs
B0–B15
B-to-A Data Inputs or A-to-B 3-STATE Outputs
Inputs
Latch Status
Output Buffers
CEABn
LEABn
OEABn
(Byte n)
(Byte n)
H
X
X
Latched
High Z
X
H
X
Latched
L
L
X
Transparent
XX
H
High Z
LX
L
Driving


Html Pages

1  2  3  4  5  6  7  8  9 


Datasheet Download




Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ]  

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Alldatasheet API   |   Link Exchange   |   Manufacturer List
All Rights Reserved© Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn