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参数资料
| 型号： | LTC1338IG#TR |
| 厂商： | Linear Technology |
| 文件页数： | 1/8页 |
| 文件大小： | 0K |
| 描述： | IC TXRX RS232 5V LOW PWR 28SSOP |
| 标准包装： | 2,000 |
| 类型： | 收发器 |
| 驱动器/接收器数： | 5/3 |
| 规程： | RS232 |
| 电源电压： | 4.5 V ~ 5 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-SSOP（0.209"，5.30mm 宽） |
| 供应商设备封装： | 28-SSOP |
| 包装： | 带卷 (TR) |
1
LTC1338
5V Low Power RS232
5-Driver/3-Receiver Transceiver
S
FEATURE
D
U
ESCRIPTIO
s
Low Supply Current: 500
A
s
0.2
A Supply Current in SHUTDOWN
s
50
A Supply Current in RECEIVER ALIVE Mode
s
ESD Protection Over
±10kV
s
Operates from a Single 5V Supply
s
Uses Small Capacitors: 0.1
F
s
Operates to 120k Baud
s
Three-State Outputs Are High Impedance When Off
s
Output Overvoltage Does Not Force Current
Back into Supplies
s
RS232 I/O Lines Can Be Forced to
±25V
Without Damage
s
Flowthrough Architecture
The LTC1338 is a 5-driver/ 3-receiver RS232 trans-
ceiver with very low supply current. In the no load
condition, the supply current is only 500
A. The charge
pump only requires four 0.1
F capacitors.
In SHUTDOWN mode, the supply current is further
reduced to 0.2
A. In RECEIVER ALIVE mode, all three
receivers are kept alive and the supply current is 50
A.
All RS232 outputs assume a high impedance state in
SHUTDOWN and with the power off.
The LTC1338 is fully compliant with all data rate and
overvoltage RS232 specifications. The transceiver can
operate up to 120k baud with a 2500pF, 3k
load. Both
driver outputs and receiver inputs can be forced to
±25V without damage, and can survive multiple ±10kV
ESD strikes.
U
S
A
O
PPLICATI
s
Battery-Powered Modems
s
Battery-Powered DCE
s
Notebook Computers
s
Palmtop Computers
U
A
O
PPLICATI
TYPICAL
5-Drivers/3-Receivers with SHUTDOWN
LTC1338 TA01
VCC
C1
0.1
F
LTC1338
1
2
3
4
5
6
7
8
9
10
11
12
13
14
DRIVER 1 OUT
DRIVER 2 OUT
RX1 IN
DRIVER 3 OUT
RX2 IN
DRIVER 4 OUT
RX3 IN
DRIVER 5 OUT
RX ENABLE
NC
28
27
26
25
24
23
22
21
20
19
18
17
16
15
C3
0.1
F
DRIVER 1 IN
DRIVER 2 IN
RX1 OUT
DRIVER 3 IN
RX2 OUT
DRIVER 4 IN
RX3 OUT
DRIVER 5 IN
GND
DRIVER ENABLE
NC
V–
V+
C2
0.1
F
C4
0.1
F
TEMPERATURE (°C)
QUIESCENT
CURRENT
(
A)
1200
1000
800
600
400
200
0
20
40
60
LTC1338 TA02
80
0
–20
1.2
1.0
0.8
0.6
0.4
0.2
0
SHUTDOWN
CURRENT
(
A)
QUIESCENT
CURRENT
SHUTDOWN
CURRENT
–40
TEST CONDITION:
VCC = 5V, ALL DRIVER INPUTS TIED TO VCC.
100
Supply Current
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