DS36277TMX National Semiconductor Corporation, DS36277TMX Datasheet
DS36277TMX
Manufacturer Part Number
DS36277TMX
Description
DS36277 - Dominant Mode Multipoint Transceiver, Package: Soic Narrow, Pin Nb=8
Manufacturer
National Semiconductor Corporation
Datasheet
1.DS36277TMX.pdf
(12 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DS36277TMX
Manufacturer:
NSC
Quantity:
11 000
Part Number:
DS36277TMX
Manufacturer:
NS/国半
Quantity:
20 000
Company:
Part Number:
DS36277TMX/NOPB
Manufacturer:
MICROCHIP
Quantity:
214
© 2002 National Semiconductor Corporation
DS36277
Dominant Mode Multipoint Transceiver
General Description
The DS36277 Dominant Mode Multipoint Transceiver is de-
signed for use on bi-directional differential busses. It is opti-
mal for use on Interfaces that utilize Society of Automotive
Engineers (SAE) J1708 Electrical Standard.
The device is similar to standard TIA/EIA-485 transceivers,
but differs in enabling scheme. The Driver’s Input is normally
externally tied LOW, thus providing only two states: Active
(LOW), or Disabled (OFF). When the driver is active, the
dominant mode is LOW, conversely, when the driver is dis-
abled, the bus is pulled HIGH by external bias resistors.
The receiver provides a FAILSAFE feature that guarantees a
known output state when the Interface is in the following
conditions: Floating Line, Idle Line (no active drivers), and
Line Fault Conditions (open or short). The receiver output is
HIGH for the following conditions: Open Inputs, Terminated
Inputs (50 ), or Shorted Inputs. FAILSAFE is a highly desir-
able feature when the transceivers are used with Asynchro-
nous Controllers such as UARTs.
Connection and Logic Diagram
TRI-STATE
Order Number DS36277TM or DS36277TN
®
See NS Package Number M08A or N08E
is a registered trademark of National Semiconductor Corporation.
DS011384-1
DS011384
Features
n FAILSAFE receiver, RO = HIGH for:
n Optimal for use in SAE J1708 Interfaces
n Compatible with popular interface standards:
n Bi-directional transceiver
n Wide bus common mode range
n Available in plastic DIP and SOIC packages
Driver
Receiver
— OPEN inputs
— Terminated inputs
— SHORTED inputs
— TIA/EIA-485 and TIA/EIA-422-A
— CCITT recommendation V.11
— Designed for multipoint transmission
— (−7V to +12V)
DE
H
L
L
RE
H
L
L
L
L
Inputs
Inputs
DI
H
X
L
DO/RI–DO /RI
SHORTED
−500 mV
OPEN
0 mV
X
DO/RI
H
L
Z
Outputs
February 2002
www.national.com
Output
DO /RI
RO
H
H
H
Z
L
H
L
Z