LTC2857IMS8-1#TRPBF Linear Technology, LTC2857IMS8-1#TRPBF Datasheet - Page 7

• Manufacturer Part Number: LTC2857IMS8-1#TRPBF
• Description: IC TXRX RS485/RS422 8-MSOP
• Manufacturer: Linear Technology
• Type: Transceiverr

Specifications of LTC2857IMS8-1#TRPBF

• Number Of Drivers/receivers: 1/1
• Protocol: RS422, RS485
• Voltage - Supply: 4.5 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

TEST CIRCUITS
GND
V
OR
CC
DI
DI
DRIVER
DE
DRIVER
Y
Z
Y
Z
R
Figure 5. Driver Enable and Disable Timing Measurement
DIFF
285678 F04a
C
C
L
L
R
R
L
L
C
C
L
L
285678 F05a
Figure 4. Driver Timing Measurement
GND
OR
V
V
OR
GND
CC
CC
Y OR Z
Z OR Y
DE
Y, Z
Y-Z
DI
V
V
V
V
0V
OH
0V
CC
CC
OL
V
0V
CC
V
O
V
LTC2857-1/LTC2857-2
LTC2858-1/LTC2858-2
O
1/2 V
1/2 V
CC
10%
t
t
O
PLHDS
PLHD ,
t
t
t
t
t
t
ZLSDS
ZHSDS
90%
t
t
ZHDS ,
ZHSD ,
ZLDS ,
ZLSD ,
ZLD ,
ZHD ,
0
1/2 V
1/2 V
t
SKEWD ,
t
t
RD ,
RDS
CC
CC
t
SKEWDS
t
t
PHLDS
PHLD ,
t
0
t
t
t
SHDNS
t
t
HZDS ,
SHDN ,
LZDS
LZD ,
HZD ,
90%
10%
t
t
FD ,
FDS
0.5V
0.5V
285678 F04b
285678 F05b
285678fe
7