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DS36C280TM Datasheet

  • DS36C280TM

  • Slew Rate Controlled CMOS EIA-RS-485 Transceiver

  • 10頁

  • NSC

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DS36C280 Slew Rate Controlled CMOS EIA-RS-485 Transceiver
July 1998
DS36C280
Slew Rate Controlled CMOS EIA-RS-485 Transceiver
General Description
The DS36C280 is a low power differential bus/line trans-
ceiver designed to meet the requirements of RS-485 Stan-
dard for multipoint data transmission. In addition, it is com-
patible with TIA/EIA-422-B.
The slew rate control feature allows the user to set the driver
rise and fall times by using an external resistor. Controlled
edge rates can reduce switching EMI.
The CMOS design offers significant power savings over its
bipolar and ALS counterparts without sacrificing ruggedness
against ESD damage. The device is ideal for use in battery
powered or power conscious applications. I
CC
is specified at
500 碌A(chǔ) maximum.
The driver and receiver outputs feature TRI-STATE
廬
capabil-
ity. The driver outputs operate over the entire common mode
range of 鈭?V to +12V. Bus contention or fault situations are
handled by a thermal shutdown circuit, which forces the
driver outputs into the high impedance state.
The receiver incorporates a fail safe circuit which guarantees
a high output state when the inputs are left open (Note 1) .
Features
n
100% RS-485 compliant
鈥?Guaranteed RS-485 device interoperation
n
Low power CMOS design: I
CC
500 碌A(chǔ) max
n
Adjustable slew rate control
鈥?Minimizes EMI affects
n
Built-in power up/down glitch-free circuitry
鈥?Permits live transceiver insertion/displacement
n
DIP and SOIC packages available
n
Industrial temperature range: 鈭?0藲C to +85藲C
n
On-board thermal shutdown circuitry
鈥?Prevents damage to the device in the event of
excessive power dissipation
n
Wide common mode range: 鈭?V to +12V
n
Receiver open input fail-safe (Note 1)
n
1
鈦?/div>
4
unit load (DS36C280):
鈮?28
nodes
n
1
鈦?/div>
2
unit load (DS36C280T):
鈮?4
nodes
n
ESD (human body model):
鈮?
kV
Connection and Logic Diagram
Truth Table
DRIVER SECTION
DE/RE*
H
H
L
DE/RE*
L
L
H
L
DI
H
L
X
RI-RI*
鈮?0.2V
鈮も垝0.2V
X
OPEN (Note 1)
DO/RI
H
L
Z
DO*/RI*
L
H
Z
RO
H
L
Z
H
RECEIVER SECTION
DS012052-1
Order Number DS36C280TM, DS36C280TN
DS36C280M and DS36C280N
See NS Package Number M08A or N08E
Note 1:
Non-terminated, Open Inputs only
TRI-STATE
廬
is a registered trademark of National Semiconductor Corporation.
漏 1999 National Semiconductor Corporation
DS012052
www.national.com

DS36C280TM 產(chǎn)品屬性

  • National Semiconductor (TI)

  • Tube

  • 95

DS36C280TM相關(guān)型號PDF文件下載

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