LT1785IS8#TRPBF Linear Technology, LT1785IS8#TRPBF Datasheet - Page 6

• Manufacturer Part Number: LT1785IS8#TRPBF
• Description: IC TXRX RS485/RS422 60V 8-SOIC
• Manufacturer: Linear Technology
• Type: Transceiverr

Specifications of LT1785IS8#TRPBF

• Number Of Drivers/receivers: 1/1
• Protocol: RS422, RS485
• Voltage - Supply: 4.75 V ~ 5.25 V
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Data Rate: 250Kbps
• 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: 9mA
• Power Supply Requirement: Single
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 8
• Package Type: SOIC N
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

LT1785/LT1785A/
LT1791/LT1791A
TYPICAL PERFORMANCE CHARACTERISTICS
6
1mA/DIV
1000
900
800
700
600
500
400
300
200
100
0
4
3
2
1
0
–60V
–40
10
Driver Differential Output Voltage
vs Load Resistance
Driver Propagation Delay
vs Temperature
LT1785 Input Characteristics Pins
A or B; DE = RE = 0V
T
A
–20
= 25°C
LOAD RESISTANCE (Ω)
0
TEMPERATURE (°C)
20
V
100
LH
HL
A
, V
40
B
60
80
178591 G04
178591 G01
178591 G07
100
60V
1k
1mA/DIV
3.0
2.5
2.0
1.5
1.0
0.5
0
7
6
5
4
3
2
1
0
–60V
–40
–40
Driver Differential Output Voltage
vs Temperature
LT1791 Driver Output Leakage
DE = 0V
Supply Current vs Temperature
R = 27Ω
RECEIVER ON
DRIVER AND
RECEIVER ONLY
STANDBY
–20
–20
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
20
20
V
IN
40
40
60
60
80
80
178591 G02
178591 G08
178591 G05
100
60V
100
200μA/DIV
1000
800
600
400
200
700
600
500
400
300
200
100
0
0
–60V
–40
Receiver Propagation Delay
vs Temperature
LT1791 Receiver Input Current
vs V
0
Receiver Propagation Delay
vs Differential Input Voltage
LH V
–20
IN
CM
HL V
1
= 12V
CM
V
0
TEMPERATURE (°C)
IN
= 12V
DIFFERENTIAL (V)
2
20
t
t
LH V
PHL
PLH
V
IN
HL V
40
CM
3
CM
= –7V
60
= –7V
4
80
178591 G03
178591 G09
178591 G06
178591fc
100
60V
5