參數(shù)資料
型號(hào): LTC2871CUHF#TRPBF
廠商: Linear Technology
文件頁(yè)數(shù): 35/36頁(yè)
文件大小: 0K
描述: IC TXRX RS485/RS422 38-QFN
產(chǎn)品培訓(xùn)模塊: LTC2870 and LTC2871 Multi-Protocol Transceivers
標(biāo)準(zhǔn)包裝: 2,500
類型: 收發(fā)器
驅(qū)動(dòng)器/接收器數(shù): 3/3
規(guī)程: RS232,RS422,RS485
電源電壓: 3 V ~ 5.5 V
安裝類型: 表面貼裝
封裝/外殼: 38-WFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝: 38-QFN(5x7)
包裝: 帶卷 (TR)
配用: DC1786A-ND - BOARD DEMO LTC2871
LTC2870/LTC2871
8
28701f
TYPICAL PERFORMANCE CHARACTERISTICS
RS232 Receiver Input Threshold
vs Temperature
RS232 Receiver Output Voltage
vs Load Current
RS485 Termination Resistance
vs Temperature
RS232 Operation at 500kbps
RS485 Operation at 20Mbps
LTC2870 Drivers Changing Modes
RS485 Receiver Propagation
Delay vs Temperature
RS485 Receiver Skew
vs Temperature
RS485 Receiver Output Voltage
vs Load Current
TEMPERATURE (°C)
–50
DELA
Y
(ns)
80
70
60
50
40
50
75
–25
28701 G10
100
25
0
VCC = 3.3V, VL = 1.7V
VCC = 5V, VL = 1.7V
VCC = 3.3V, VL = 3.3V
VCC = 5V, VL = 5V
TEMPERATURE (°C)
–50
SKEW
(ns)
3.0
2.5
2.0
1.0
1.5
0.5
0
50
75
–25
28701 G11
100
25
0
OUTPUT CURRENT (mA)
0
OUTPUT
VOL
TAGE
(V)
6
5
4
2
3
1
0
8
2
28701 G12
10
6
4
VL = 5V
VL = 3.3V
VL = 1.7V
TEMPERATURE (°C)
–50
THRESHOLD
VOL
TAGE
(V)
2.0
1.8
1.6
1.4
1.2
1.0
50
75
–25
28701 G13
100
25
0
VCC = 5V
VCC = 3.3V
INPUT HIGH
INPUT LOW
OUTPUT CURRENT (mA)
0
OUTPUT
VOL
TAGE
(V)
6
5
4
2
3
1
0
8
2
28701 G14
10
6
4
VL = 5V
VL = 3.3V
VL = 1.7V
TEMPERATURE (°C)
–50
RESIST
ANCE
(Ω)
130
118
116
114
112
110
128
126
124
122
120
50
75
–25
28701 G15
100
25
0
VCM = –7V
VCM = 2V
VCM = 12V
WRAPPING DATA
DOUT LOADS: 5kΩ + 50pF
5V/DIV
28701 G16
1μs/DIV
DOUT1
DOUT2
ROUT1
ROUT2
DIN1
DIN2
H/F HIGH
Y, Z LOADS: 120Ω (DIFF) + 50pF
1V/DIV
5V/DIV
28701 G17
20ns/DIV
RO
Y
DI
Z
5V/DIV
28701 G18
2μs/DIV
RS232
MODE
RS485
MODE
RS232
MODE
Y
485/232
Z
TA = 25°C, VCC = VL = 3.3V, unless otherwise noted.
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