ZT490E ETC1 [List of Unclassifed Manufacturers], ZT490E Datasheet - Page 8

• Manufacturer Part Number: ZT490E
• Description: Low Power 5V 250kbps/10Mbps RS485 Transceivers
• Manufacturer: ETC1 [List of Unclassifed Manufacturers]

Zywyn Corporation
Function Truth Table
ZT483E/ZT485E
ZT488E/ZT490E
ZT489E/ZT491E
Note:
H = High Level; L = Low Level; Z = High Impedance; X = Irrelevant; U = Undetermine State.
Open
Open
Input
Input
DI
Zywyn
DI
H
H
L
X
X
X
X
L
Open
Input
DI
H
X
X
L
Enable
Enable
Open
Open
DE
DE
H
H
H
H
H
H
L
L
DRIVER
DRIVER
DRIVER
H
H
Y
Z
Z
A
H
H
Y
H
H
L
L
Z
Z
L
Z
Z
Outputs
Outputs
Outputs
H
H
H
Z
L
Z
L
Z
B
L
Z
L
Z
Z
L
Z
L
Z
-0.2V < V
-0.2V < V
-0.2V < V
Differential Inputs
Differential Inputs
Differential Inputs
8
V
V
V
V
+0.2V ≤ V
V
+0.2V ≤ V
V
+0.2V ≤ V
ID
ID
ID
ID
ID
ID
= V
= V
= V
≤ -0.2V
≤ -0.2V
≤ -0.2V
X
X
X
X
X
X
RECEIVER
ID
ID
ID
A
A
A
< +0.2V
< +0.2V
< +0.2V
- V
- V
- V
ID
ID
ID
B
B
B
RECEIVER
RECEIVER
Enable
Enable
Output
Specifications subject to change without notice
Open
Open
RE
RO
RE
H
H
U
H
L
L
L
L
L
L
L
Z
Z
Output
Output
RO
RO
U
H
Z
Z
U
H
L
L
Z
Z
August 2004
ZT4xxE
rev.1.2