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LTC2803CDHC 数据表(PDF) 6 Page - Linear Technology

部件名 LTC2803CDHC
功能描述  1.8V to 5.5V RS-232 Single and Dual Transceivers
PDF  18 Pages
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制造商  LINER [Linear Technology]
网页  http://www.linear.com
标志 LINER - Linear Technology

LTC2803CDHC 数据表(HTML) 6 Page - Linear Technology

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LTC2801/LTC2802/
LTC2803/LTC2804

2801234fe
tyPical PerForMance characteriSticS
LTC2803 at 1.8V and 250kbps
LTC2804 at 1.8V and 1Mbps
Drivers Disabled Mode Supply
Current vs Supply Voltage
tPZLR
VL
0V
VOLR
VOHR
ROUT
PS AND MODE
GND
VL
ROUT
tPZHR
1/2 VL
tPLZR
1/2 VL
1/2 VL
2801 F05
VL
PS AND MODE
RL
CL
ROUT
–3V OR 3V
0V
tPHZR
1/2 VL
VOLR + 0.5V
VOHR – 0.5V
PS AND MODE tr, tf ≤ 40ns
Figure 5. Receiver Enable/Disable Times
Supply Current vs Supply Voltage
(Dual Transceiver)
Supply Current vs Data Rate
Supply Current vs Load
Capacitance (Dual Transceiver)
TA = 25°C, VCC = VL = 3.3V unless otherwise noted.
teSt circuitS
2801 G01
T1IN
T2OUT
T1OUT
R2OUT
R1OUT
2V/DIV
10V/DIV
2V/DIV
2µs/DIV
VCC = VL = 1.8V
WRAPPING DATA
TOUT LOAD = 1nF + RIN
ROUT LOAD = 150pF
2801 G02
T1IN
T2OUT
T1OUT
R2OUT
R1OUT
2V/DIV
10V/DIV
2V/DIV
400ns/DIV
VCC = VL = 1.8V
WRAPPING DATA
TOUT LOAD = 250pF + RIN
ROUT LOAD = 150pF
SUPPLY VOLTAGE (V)
6
3.0
2.5
2.0
1.5
1.0
0.5
0
1
2
3
4
2801 G03
5
VCC = VL
TA = 85°C
TA = 25°C
TA = –40°C
LTC2804
LTC2803
ALL DRIVERS SWITCHING
VCC = VL
RL = 3k
CL = 1nF
250kbps
20.8kbps
125kbps
SUPPLY VOLTAGE (V)
1
60
50
40
30
20
10
0
2
3
4
5
2801 G04
6
DATA RATE (kbps)
0
100
80
60
40
20
0
800
2801 G05
200
400
600
1000
ALL DRIVERS SWITCHING
VCC = VL = 1.8V
RL = 3k
LTC2804
LTC2802
1nF
1nF
250pF
250pF
250kbps
100
80
60
40
20
0
LOAD CAPACITANCE (nF)
1
5
2801 G06
2
3
4
LTC2804
LTC2803
125kbps
VCC = VL = 1.8V
RL = 3k
ALL DRIVERS SWITCHING
20.8kbps



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