LTC2871IFE#PBF Linear Technology, LTC2871IFE#PBF Datasheet - Page 14

• Manufacturer Part Number: LTC2871IFE#PBF
• Description: IC, RS232-RS485 TXRX, 200MBPS, 5.5V, TSSOP-38
• Manufacturer: Linear Technology

Specifications of LTC2871IFE#PBF

• Device Type: Transceiver
• No. Of Drivers: 2
• Supply Voltage Range: 3V To 5.5V
• Driver Case Style: TSSOP
• No. Of Pins: 38
• Operating Temperature Range: -40°C To +85°C
• Rohs Compliant: Yes
• Ic Interface Type: RS232, RS485

TEST CIRCUITS
LTC2870/LTC2871
14
GND
OR
V
0V TO 3V
3V TO 0V
L
DY/DI
V
CM
DRIVER
A
B
DXEN/DX485
±V
±V
RECEIVER
AB
AB
RXEN/RX485
/2
/2
Figure 7. RS485 Receiver Enable and Disable Timing Measurements (Note 5)
Y
Z
Figure 6. RS485 Receiver Propagation Delay Measurements (Note 5)
Figure 5. RS485 Driver Enable and Disable Timing Measurements
A
B
RA/RO
C
C
L
L
R
R
RECEIVER
L
L
GND
GND
V
V
OR
OR
C
CC
CC
L
R
L
RA/RO
GND
OR
V
L
C
L
RXEN/
RX485
RA/RO
RA/RO
RA/RO
Y OR Z
Z OR Y
DX485
DXEN/
A-B
½V
½V
L
0V
10%
L
90%
t
t
ZHR485
ZLR485
t
t
t
t
ZHSD485
ZLSD485
ZLD485
ZHD485
½V
t
SKEWR485
,
,
t
L
PLHR485
t
RR485
½V
½V
½V
½V
L
L
= t
CC
CC
PLHR485
½V
– t
½V
PHLR485
L
L
½V
t
t
LZR485
HZR485
L
t
t
LZD485
HZD485
90%
10%
t
PHLR485
t
0.5V
0.5V
FR485
0.5V
0.5V
28701 F06
V
V
28701 F07
0V
–V
AB
L
28701 F05
V
0V
V
V
V
0V
AB
L
L
OL
OH
V
0V
V
V
V
0V
L
CC
OL
OH
28701f