參數(shù)資料
型號: LTC1481CS8#TRPBF
廠商: Linear Technology
文件頁數(shù): 4/8頁
文件大?。?/td> 0K
描述: IC TXRX RS485 LOPWR W/SHTDN8SOIC
標(biāo)準(zhǔn)包裝: 2,500
類型: 收發(fā)器
驅(qū)動器/接收器數(shù): 1/1
規(guī)程: RS422,RS485
電源電壓: 4.75 V ~ 5.25 V
安裝類型: 表面貼裝
封裝/外殼: 8-SOIC(0.154",3.90mm 寬)
供應(yīng)商設(shè)備封裝: 8-SOIC
包裝: 帶卷 (TR)
4
LTC1481
1481fa
Driver Output High Voltage
vs Output Current
OUTPUT VOLTAGE (V)
0
OUTPUT
CURRENT
(mA)
4
5
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
1481 G04
12
3
TA = 25°C
TEMPERATURE (
°C)
–50
3.0
2.5
2.0
1.5
1.0
0.5
0
25
75
1481 G05
–25
0
50
100
125
TIME
(ns)
TEMPERATURE (
°C)
–50
14
12
10
8
6
4
2
0
25
75
1481 G05
–25
0
50
100
125
TIME
(ns)
Driver Skew vs Temperature
Receiver
tPLH – tPHL vs
Temperature
LTC1481 Transmitting
INPUTS
OUTPUTS
RE
DE
DI
B
A
X
110
1
X
101
0
00
X
Z
1
0
X
Z*
*Shutdown mode for LTC1481
LTC1481 Receiving
INPUTS
OUTPUTS
RE
DE
A – B
RO
00
≥0.2V
1
00
≤–0.2V
0
Inputs Open
1
10
X
Z*
*Shutdown mode for LTC1481
DI (Pin 4): Driver Input. If the driver outputs are enabled
(DE high) then a low on DI forces the outputs A low and B
high. A high on DI with the driver outputs enabled will force
A high and B low.
GND (Pin 5): Ground.
A (Pin 6): Driver Output/Receiver Input.
B (Pin 7): Driver Output/Receiver Input.
VCC (Pin 8): Positive Supply. 4.75V < VCC < 5.25V.
RO (Pin 1): Receiver Output. If the receiver output is
enabled (RE low), then if A > B by 200mV, RO will be high.
If A < B by 200mV, then RO will be low.
RE (Pin 2): Receiver Output Enable. A low enables the
receiver output, RO. A high input forces the receiver
output into a high impedance state.
DE (Pin 3): Driver Outputs Enable. A high on DE enables
the driver output. A, B and the chip will function as a line
driver. A low input will force the driver outputs into a high
impedance state and the chip will function as a line
receiver. If RE is high and DE is low, the part will enter a low
power (1
A) shutdown state.
TYPICAL PERFOR A CE CHARACTERISTICS
UW
UU
U
PI FU CTIO S
FU CTIO TABLES
U
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