Electronic Components Datasheet Search
  English  ▼

X  

Preview PDF HTML

LT1785 Datasheet(PDF) 3 Page - Linear Technology

Part # LT1785
Description  60V Fault Protected RS485/RS422 Transceivers
PDF  12 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT1785 Datasheet(HTML) 3 Page - Linear Technology

  LT1785 Datasheet HTML 1Page - Linear Technology LT1785 Datasheet HTML 2Page - Linear Technology LT1785 Datasheet HTML 3Page - Linear Technology LT1785 Datasheet HTML 4Page - Linear Technology LT1785 Datasheet HTML 5Page - Linear Technology LT1785 Datasheet HTML 6Page - Linear Technology LT1785 Datasheet HTML 7Page - Linear Technology LT1785 Datasheet HTML 8Page - Linear Technology LT1785 Datasheet HTML 9Page - Linear Technology Next Button
Zoom Inzoom in Zoom Outzoom out
 3 / 12 page
background image
3
LT1785/LT1785A
LT1791/LT1791A
DC ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VOD1
Differential Driver Output Voltage (Unloaded)
IO = 0
q
4.1
5
V
VOD2
Differential Driver Output Voltage (With Load)
R = 50
Ω (RS422), Figure 1
q
2.0
2.70
V
R = 27
Ω (RS485), Figure 1
q
1.5
2.45
V
R = 18
Ω
q
1.2
2.2
V
∆VOD
Change in Magnitude of Driver Differential Output
R = 27
Ω or R = 50Ω, Figure 1
q
0.2
V
Voltage for Complementary Output States
VOC
Driver Common Mode Output Voltage
R = 27
Ω or R = 50Ω, Figure 1
q
2
2.5
3
V
∆VOC
Change in Magnitude of Driver Common Mode
R = 27
Ω or R = 50Ω, Figure 1
q
0.2
V
Output Voltage for Complementary Output States
VIH
Input High Voltage
DI, DE, RE
q
2V
VIL
Input Low Voltage
DI, DE, RE
q
0.8
V
IIN1
Input Current
DI, DE, RE
q
5
µA
IIN2
Input Current (A, B); (LT1791 or LT1785 with
VIN = 12V
q
0.15
0.3
mA
DE = 0V)
VIN = – 7V
q
– 0.15
– 0.08
mA
– 60V
≤ VIN ≤ 60V
q
–6
6
mA
VTH
Differential Input Threshold Voltage for Receiver
LT1785/LT1791: – 7V
≤ VCM ≤ 12V
q
– 0.2
0.2
V
LT1785A/LT1791A: – 7V
≤ VCM ≤ 12V q
– 0.2
0
V
∆VTH
Receiver Input Hysteresis
– 7V < VCM < 12V
20
mV
VOH
Receiver Output High Voltage
IO = – 400µA, VID = 200mV
q
3.5
4
V
VOL
Receiver Output Low Voltage
IO = 1.6mA, VID = – 200mV
q
0.3
0.5
V
Three-State (High Impedance) Output Current
RE > 2V or Power Off
q
–1
1
µA
at Receiver 0V < VOUT < 6V
RIN
Receiver Input Resistance (LT1791)
– 7V
≤ VCM ≤ 12V
q
85
125
k
Ω
– 60V
≤ VCM ≤ 60V
125
k
Ω
LT1785
– 7V
≤ VCM ≤ 12V
q
50
90
k
Ω
RS485 Unit Load
0.25
ISC
Driver Short-Circuit Current
VOUT = HIGH, Force VO = – 7V
q
35
250
mA
VOUT = LOW, Force VO = 12V
q
35
250
mA
Driver Output Fault Current
VO = 60V
q
6mA
VO = – 60V
q
–6
mA
Receiver Short-Circuit Current
0V
≤ VO ≤ VCC
q
±30
mA
Driver Three-State Output Current
–7V
≤ VO ≤ 12V
q
– 0.2
0.3
mA
– 60V
≤ VO ≤ 60V
q
–6
6
mA
ICC
Supply Current
No Load, RE = 0V, DE = 5V
q
5.5
9
mA
No Load, RE = 5V, DE = 5V
q
5.5
9
mA
No Load, RE = 0V, DE = 0V
q
4.5
8
mA
No Load, RE = 5V, DE = 0V
q
0.2
0.3
mA
The q denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25°C, VCC = 5V.



Html Pages

1 2 3 4 5 6 7 8 9 10 11 12


Datasheet Download

Go To PDF Page


Link URL



Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Link to Datasheet    |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com