LTC491CS#PBF Linear Technology, LTC491CS#PBF Datasheet - Page 6
![IC TXRX RS485 LOW POWER 14-SOIC](/photos/6/83/68368/ltc491cs_pbf_sml.jpg)
LTC491CS#PBF
Manufacturer Part Number
LTC491CS#PBF
Description
IC TXRX RS485 LOW POWER 14-SOIC
Manufacturer
Linear Technology
Type
Transceiverr
Datasheet
1.LTC491CNPBF.pdf
(12 pages)
Specifications of LTC491CS#PBF
Number Of Drivers/receivers
1/1
Protocol
RS422, RS485
Voltage - Supply
4.75 V ~ 5.25 V
Mounting Type
Surface Mount
Package / Case
14-SOIC (3.9mm Width), 14-SOL
No. Of Drivers
1
Supply Voltage Range
4.75V To 5.25V
Driver Case Style
SOIC
No. Of Pins
14
Operating Temperature Range
0°C To +70°C
Msl
MSL 1 - Unlimited
Termination Type
SMD
Rohs Compliant
Yes
Filter Terminals
SMD
Ic Interface Type
RS422, RS485
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
SWITCHI G TI E WAVEFOR S
LTC491
6
REB
A-B
A, B
A, B
V
DE
R
R
R
D
O
–V
–V
V
V
V
V
V
3V
0V
V
V
V
3V
0V
5V
OH
0V
OD2
OD2
3V
0V
5V
OH
0V
OL
OL
O
O
Z
Y
OH
OL
1/2 V
U
O
10%
50%
t
1.5V
PLH
t
PLH
0V
t
r
W
80%
1.5V
t
SKEW
t
1.5V
ZH
1.5V
t
t
t
ZH
ZL
ZL
1.5V
2.3V
2.3V
1.5V
Figure 8. Receiver Enable and Disable Times
Figure 6. Driver Enable and Disable Times
Figure 7. Receiver Propagation Delays
f = 1MHz : t
Figure 5. Driver Propagation Delays
f = 1MHz ; t
W
V
DIFF
r
= V(Y) – V(Z)
OUTPUT
r
f = 1MHz : t
f = 1MHz : t
INPUT
10ns : t
OUTPUT NORMALLY HIGH
OUTPUT NORMALLY HIGH
OUTPUT NORMALLY LOW
OUTPUT NORMALLY LOW
10ns : t
f
f
10ns
r
r
10ns
10ns : t
10ns : t
f
r
10ns
10ns
1/2 V
O
90%
t
PHL
1.5V
t
PHL
0V
t
t
t
t
t
f
LZ
HZ
LZ
HZ
1.5V
1.5V
50%
1.5V
20%
t
SKEW
0.5V
0.5V
0.5V
0.5V
LTC491 • F06
LTC491 • F08
LTC491 • F05
LTC491 • F07
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