LTC485CS8#TRPBF Linear Technology, LTC485CS8#TRPBF Datasheet - Page 6
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LTC485CS8#TRPBF
Manufacturer Part Number
LTC485CS8#TRPBF
Description
IC TXRX INTRFC RS485 LOPWR 8SOIC
Manufacturer
Linear Technology
Type
Transceiverr
Specifications of LTC485CS8#TRPBF
Number Of Drivers/receivers
1/1
Protocol
RS485
Voltage - Supply
4.75 V ~ 5.25 V
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Interface Circuit Standard 1
RS-485
Number Of Receivers
1
Number Of Transmitters
1
Number Of Transceivers
1
Data Transmission Topology
Multipoint
Receiver Signal Type
Differential
Transmitter Signal Type
Differential
Single Supply Voltage (typ)
5V
Single Supply Voltage (min)
4.75V
Single Supply Voltage (max)
5.25V
Dual Supply Voltage (typ)
Not RequiredV
Dual Supply Voltage (min)
Not RequiredV
Dual Supply Voltage (max)
Not RequiredV
Supply Current
0.9mA
Power Supply Requirement
Single
Operating Temp Range
0C to 70C
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Pin Count
8
Package Type
SOIC N
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
LTC485
TEST CIRCUITS
SWITCHING TIME WAVEFORMS
6
DI
3V
Figure 3. Driver/Receiver Timing Test Circuit
DE
DI
–V
A
B
3V
0V
V
0V
B
A
O
O
Figure 1. Driver DC Test Load
A
B
V
R
OD
DIFF
485 F01
R
R
C
C
V
L1
L2
O
1/2 V
V
OC
A
B
O
t
10%
r
1.5V
Figure 5. Driver Propagation Delays
RE
80%
15pF
t
PLH
t
SKEW
RO
485 F03
f = 1MHz, t
V
r
DIFF
≤ 10ns, t
= V(A) – V(B)
f
≤ 10ns
RECEIVER
OUTPUT
UNDER TEST
OUTPUT
Figure 4. Driver Timing Test Load #2
Figure 2. Receiver Timing Test Load
t
PLH
TEST POINT
t
f
1.5V
C
15pF
RL
90%
20%
C
500
L
t
SKEW
1k
1/2 V
S1
S2
O
S1
S2
1k
485 F02
485 F05
485 F04
V
CC
V
CC
485fh