参数资料
型号: LTC1545CG
厂商: Linear Technology
文件页数: 2/16页
文件大小: 0K
描述: IC TXRX SOFTWARE SELECTBL 36SSOP
标准包装: 37
类型: 收发器
驱动器/接收器数: 5/5
电源电压: 4.75 V ~ 5.25 V
安装类型: 表面贴装
封装/外壳: 36-SSOP(0.209",5.30mm 宽)
供应商设备封装: 36-SSOP
包装: 管件
产品目录页面: 1355 (CN2011-ZH PDF)
10
LTC1545
APPLICATIONS INFORMATION
WU
U
Figure 12. V.10 Receiver Input Impedance
Figure 13. V.10 Receiver Configuration
Figure 14. Typical V.11 Interface
R3
124
R5
20k
LTC1344A
LTC1543
LTC1545
RECEIVER
1545 F15
A
B
A
'
B
'
C
'
R1
51.5
R8
6k
S2
S3
R2
51.5
R6
10k
R7
10k
GND
R4
20k
S1
IZ
VZ
–10V
–3.25mA
3.25mA
–3V
3V
10V
1545 F12
R5
20k
LTC1545
RECEIVER
1545 F13
A
B
A
'
B
'
C
'
R8
6k
S3
R6
10k
R7
10k
GND
R4
20k
AA
'
B
C
B
'
C
'
GENERATOR
BALANCED
INTERCONNECTING
CABLE
LOAD
CABLE
TERMINATION
RECEIVER
100
MIN
1545 F14
AA
'
CC
'
GENERATOR
BALANCED
INTERCONNECTING
CABLE
LOAD
CABLE
TERMINATION
RECEIVER
1545 F11
Figure 11. Typical V.10 Interface
Figure 15. V.11 Receiver Configuration
In V.11 mode, all switches are off except S1 inside the
LTC1344A which connects a 103
differential termina-
tion impedance to the cable as shown in Figure 15.
V.28 (RS232) Interface
A typical V.28 unbalanced interface is shown in Figure 16.
A V.28 single-ended generator output A with ground C is
connected to a single-ended receiver with input A
' con-
nected to A, ground C
' connected via the signal return
ground C.
In V.28 mode, all switches are off except S3 inside the
LTC1543/LTC1545 which connects a 6k (R8) impedance
to ground in parallel with 20k (R5) plus 10k (R6) for a
combined impedance of 5k as shown in Figure 17. The
noninverting input is disconnected inside the LTC1543/
LTC1545 receiver and connected to a TTL level reference
voltage for a 1.4V receiver trip point.
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