Datasheet

3
4
1
2
6
7
A
B
R
DE
D
INV
S0311-01
R
INV
DE
D
V
CC
B
A
GND
DPackage
(TopView)
1
2
3
4
8
7
6
5
P0066-04
SN65HVD1794, SN65HVD1795
SN65HVD1796
SLLS935A –AUGUST 2008–REVISED AUGUST 2012 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.
DEVICE INFORMATION
Figure 1. SN65HVD17xx With Inverting Feature to Correct for Miswired Cables
DRIVER FUNCTION TABLE
INPUT ENABLE INVERT OUTPUTS
D DE INV A B
H H L H L Actively drive normal bus High
L H L L H Actively drive normal bus Low
H H H L H Actively drive inverted bus High (drive normal bus
Low)
L H H H L Actively drive inverted bus Low (drive normal bus
High)
X L X Z Z Driver disabled
X OPEN X Z Z Driver disabled by default
OPEN H L H L Actively drive bus High by default
OPEN H H L H Actively drive bus Low by default (inverted cable)
RECEIVER FUNCTION TABLE
DIFFERENTIAL INPUT INVERT OUTPUT
V
ID
= V
A
– V
B
INV R
L or OPEN H Receive valid bus High
V
IT+
< V
ID
H L Receive inverted bus Low
V
IT–
< V
ID
< V
IT+
X ? Indeterminate bus state
L or OPEN L Receive valid bus Low
V
ID
< V
IT–
H H Receive inverted bus High
L or OPEN H Fail-safe high output
Open-circuit bus
H L Failsafe inverted output
L or OPEN H Fail-safe high output
Short-circuit bus
H L Failsafe inverted output
L or OPEN H Fail-safe high output
Idle (terminated) bus
H L Failsafe inverted output
2 Submit Documentation Feedback Copyright © 2008–2012, Texas Instruments Incorporated
Product Folder Links: SN65HVD1794, SN65HVD1795 SN65HVD1796