LTC2851 LINER [Linear Technology], LTC2851 Datasheet - Page 5

• Manufacturer Part Number: LTC2851
• Description: 20Mbps RS485 Transceivers
• Manufacturer: LINER [Linear Technology]

TesT circuiTs
GND
OR
V
V
OR
GND
CC
CC
DI
DI
DI
Figure 1. Driver DC Characteristics
DRIVER
DRIVER
DRIVER
DE
Y
Z
Y
Z
Y
Z
V
+
OD
–
Figure 4. Driver Enable and Disable Timing Measurement
C
C
R
L
L
DIFF
R
R
L
L
R
R
Figure 3. Driver Timing Measurement
V
GND
OR
V
V
OR
GND
+
OC
–
C
C
CC
CC
L
L
(Y-Z)
Y or Z
Z or Y
Y, Z
DI
DE
V
OV
GND
OR
V
CC
V
OV
V
V
V
OV
CC
CC
CC
OL
OH
V
DI
O
V
O
1/2 V
Figure 2. Driver Output Short-Circuit Current
1/2 V
CC
DRIVER
O
10%
t
t
PLHD
PLHDS
90%
t
t
t
t
ZHD
ZHDS
ZHSD
ZHSDS
t
t
t
t
ZLD
ZLDS
ZLSD
ZLSDS
,
,
,
,
,
,
,
LTC2859/LTC2861
0
1/2 V
1/2 V
Y
Z
t
SKEWD
t
t
RD
RDS
CC
CC
,
, t
SKEWDS
t
t
t
t
t
t
t
t
HZD
HZDS,
SHDN,
SHDNS
PHLD
PHLDS
LZD
LZDS
0
,
,
2859/61 F01-2
,
I
OSD
90%
0.5V
0.5V
+
–
10%
t
t
FD
FDS
2859/61 F03
–7V to +12V
,
2859/61 F04
285961fc
5