Datasheet

1
2
3
4
5
6
7
8
V
ref
CANL
CANH
S
RXD
V
CC
GND
TXD
SN65HVD1050A
D PACKAGE
(TOP VIEW)
1
2
3
4
5
6
7
8
NC
CANL
CANH
S
RXD
V
CC
GND
TXD
SN65HVD1050AL
D PACKAGE
(TOP VIEW)
NC – No internal connection
SN65HVD1050A-Q1
SLLS888A –JUNE 2008–REVISED JANUARY 2011 www.ti.com
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more
susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.
DESCRIPTION (CONTINUED)
Designed for operation is especially harsh environments, the SN65HVD1050A features cross-wire, over-voltage,
and loss of ground protection from –27 V to 40 V, over-temperature protection, a –12-V to 12-V common-mode
range, and withstands voltage transients according to ISO 7637.
Pin 8 provides for two different modes of operation: high-speed or silent mode. The high-speed mode of
operation is selected by connecting S (pin 8) to ground.
If a high logic level is applied to the S pin of the SN65HVD1050A, the device enters a listen-only silent mode
during which the driver is switched off while the receiver remains fully functional.
In silent mode, all bus activity is passed by the receiver output to the local protocol controller. When data
transmission is required the local protocol controller must transition the device to high speed mode by placing a
logic low on the S pin to resume full operation.
A dominant time-out circuit in the SN65HVD1050A prevents the driver from blocking network communication with
a hardware or software failure. The time-out circuit is triggered by a falling edge on TXD (pin 1). If no rising edge
is seen before the time-out constant of the circuit expires, the driver is disabled. The circuit is then reset by the
next rising edge on TXD.
V
ref
(pin 5) is available as a V
CC
/2 voltage reference.
ORDERING INFORMATION
(1)
T
A
PACKAGE
(2)
ORDERABLE PART NUMBER TOP-SIDE MARKING
SN65HVD1050AQDRQ1 1050AQ
–40°C to 125°C SOIC – D Reel of 2500
SN65HVD1050ALQDRQ1
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
web site at www.ti.com.
(2) Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.
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