LTC491IS#PBF Linear Technology, LTC491IS#PBF Datasheet - Page 5

• Manufacturer Part Number: LTC491IS#PBF
• Description: IC TXRX RS485 LOW POWER 14-SOIC
• Manufacturer: Linear Technology
• Type: Transceiverr

Specifications of LTC491IS#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
• Data Rate: 2.5Mbps
• Interface Circuit Standard 1: RS-422/RS-485
• Number Of Receivers: 1
• Number Of Transmitters: 1
• Number Of Transceivers: 1
• Data Transmission Topology: Multidrop/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: 0.5mA
• Power Supply Requirement: Single
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 14
• Package Type: SOIC N
• No. Of Drivers: 1
• Supply Voltage Range: 4.75V To 5.25V
• Driver Case Style: SOIC
• No. Of Pins: 14
• Operating Temperature Range: -40°C To +85°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

TEST CIRCUITS
D
DRIVER
UNDER TEST
Figure 2. Driver/Receiver Timing Test Circuit
RECEIVER
OUTPUT
OUTPUT
Figure 3. Receiver Timing Test Load
Y
Z
Figure 4. Driver Timing Test Load
Figure 1. Driver DC Test Load
R
DIFF
Y
Z
V
OD2
500
C
C
L
L
LTC491 • F01
R
R
1k
C
C
L1
L2
S1
S2
V
OC
S1
S2
LTC491 • F04
A
B
LTC491 • F03
1k
RECEIVER
V
V
CC
CC
LTC491 • F02
15pF
R
LTC491
5
491fa