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LMS485E Datasheet(PDF) 3 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part No. LMS485E
Description  Low Power RS-485 / RS-422 Differential Bus Transceiver
Download  13 Pages
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Maker  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
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LMS485E Datasheet(HTML) 3 Page - National Semiconductor (TI)

 
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Pin Descriptions
Pin # I/O
Name
Function
1
O
RO
Receiver Output: If A > B by 200 mV, RO will be high; If A < B by 200 mV, RO will be low. RO
will be high also if the inputs (A and B) are open (non-terminated).
2I
RE*
Receiver Output Enable: RO is enabled when RE* is low; RO is in TRI-STATEwhen RE* is high
3
I
DE
Driver Output Enable: The driver outputs (A and B) are enabled when DE is high; they are in
TRI-STATETRI-STATE® when DE is low. Pins A and B also function as the receiver input pins
(see below)
4
I
DI
Driver Input: A low on DI forces A low and B high while a high on DI forces A high and B low
when the driver is enabled
5
NA
GND
Ground
6
I/O
A
Non-inverting Driver Output and Receiver Input pin. Driver output levels conform to RS-485
signaling levels
7
I/O
B
Inverting Driver Output and Receiver Input pin. Driver Output levels conform to RS-485 signaling
levels
8NA
V
CC
Power Supply: 4.75V
≤ V
CC
≤ 5.25V
Ordering Information
Package
Part Number
Package Marking
Transport Media
NSC Drawing
8-Pin SOIC
LMS485ECM
LMS485ECM
95 Units/Rail
M08A
LMS485ECMX
2.5k Units Tape and Reel
LMS485EIM
LMS485EIM
95 Units/Rail
LMS485EIMX
2.5k Units Tape and Reel
8-Pin DIP
LMS485ECNA
LMS485ECNA
40 Units/Rail
N08E
LMS485EINA
LMS485EINA
40 Units/Rail
www.national.com
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