DC1746A-A Linear Technology, DC1746A-A Datasheet - Page 11

• Manufacturer Part Number: DC1746A-A
• Description: EVALUATION KIT LOW EMI LTM2881-3
• Manufacturer: Linear Technology
• Series: µModuler

Specifications of DC1746A-A

• Main Purpose: Interface, Transceiver RS-422/RS-485
• Embedded: No
• Utilized Ic / Part: LTM2881
• Primary Attributes: 3V Supply, Isolated, Transceiver + Power
• Kit Contents: Board, Datasheet
• Tool / Board Applications: Interface-Backplane, PCI, PCI Express, RS-XXX, Digital & Opto Isolator
• Mcu Supported Families: LTM2881
• Development Tool Type: Hardware - Eval/Demo Board
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• Secondary Attributes: -

FUNCTIONAL TABLE
TEST CIRCUITS
ON
1
1
1
1
0
0V OR V
V
LOGIC INPUTS
RO
CC2
RE
0
0
1
0
X
OR 0V
TE
CC2
RECEIVER
TE
0
0
0
1
X
A
B
RECEIVER
DE
X
0
1
1
0
A
B
RE
2881 F07a
Receive + Term On
Transceiver
I
RO
A
Figure 8. Termination Resistance and Timing Measurements
Transmit
Receive
MODE
Figure 7. Receiver Enable/Disable Time Measurements
+
–
+
–
Off
V
V
C
AB
B
L
R
L
R
TE
=
V
OR
GND
V
L
I
AB
A
A, B
R
R
R
R
R
IN
IN
IN
TE
IN
TE
I
A
Driven
Driven
Hi-Z
Hi-Z
Hi-Z
Y, Z
RO
RO
RE
0V
V
L
V
V
0V
0V
V
V
OH
OL
L
L
1/2 V
L
Enabled
Enabled
Enabled
90%
Hi-Z
Hi-Z
RO
t
t
ZHR
ZLR
t
RTEN
1/2 V
1/2 V
CONVERTER
L
L
1/2 V
DC/DC
On
On
On
On
Off
L
t
t
LZR
HZR
LTM2881
10%
t
RTZ
TERMINATOR
0.5V
0.5V
2881 F08
Off
Off
Off
On
Off
11
2881 F07b
2881fb