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参数资料
| 型号： | LTC1338ISW#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 4/8页 |
| 文件大小： | 0K |
| 描述： | IC 5DVR/3RCVR 5V RS232 28-SOIC |
| 标准包装： | 1,000 |
| 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-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 28-SOIC |
| 包装： | 带卷 (TR) |
4
LTC1338
TYPICAL PERFOR A CE CHARACTERISTICS
WU
VCC Supply Current
Driver Leakage in Shutdown
Driver Short-Circuit Current
TEMPERATURE (°C)
–40
SUPPLY
CURRENT
(mA)
20
25
30
20
60
LTC1338 TPC04
15
10
–20
0
40
80
100
5
0
5 DRIVERS LOADED
RL = 3k
1 DRIVER LOADED
RL = 3k
TEMPERATURE (°C)
–40
0
SHORT-CIRCUIT
CURRENT
(mA)
4
8
10
12
40
20
LTC1338 TPC06
6
080
14
16
18
–20
60
20
100
ISC
+
ISC
–
TEMPERATURE (°C)
–40
0
LEAKAGE
CURRENT
(
A)
20
50
0
40
60
LTC1338 TPC05
10
40
30
–20
20
80
100
VOUT = –20V
VOUT = 20V
Receiver Short-Circuit Current
Driver Output Waveforms
Receiver Output Waveforms
TEMPERATURE (°C)
–40
10
SHORT-CIRCUIT
CURRENT
(mA)
30
60
0
40
60
LTC1338 TPC07
20
50
40
–20
20
80
100
ISC
–
ISC
+
DRIVER
OUTPUT
RL = 3k
CL = 2500pF
DRIVER
OUTPUT
RL = 3k
INPUT
LTC1338 TPC08
LTC1338 TPC09
RECEIVER
OUTPUT
CL = 50pF
INPUT
PI FU CTIO S
U
UU
VCC: 5V Input Supply Pin. Supply current less than 0.2A
in the SHUTDOWN mode. This pin should be decoupled
with a 0.1
F ceramic capacitor.
GND: Ground Pin.
RECEIVER ENABLE: TTL/CMOS Compatible Enable Pin.
Refer to Table 1 for its functional description. This pin can
not float.
DRIVER ENABLE: TTL/CMOS Compatible Enable Pin. Re-
fer to Table 1 for its functional description. This pin can not
float.
V+: Positive Supply Output (RS232 Drivers). V+
2VCC –
1V. This pin requires an external capacitor C = 0.1
F for
charge storage. The capacitor may be tied to ground or 5V.
With multiple devices, the V + and V – pins may be paral-
leled into common capacitors. For large numbers of
devices, increasing the size of the shared common storage
capacitors is recommended to reduce ripple.
V–: Negative Supply Output (RS232 Drivers). V –
2VCC
– 1.5V. This pin requires an external capacitor C = 0.1
Ffor
charge storage.
C1+, C1–, C2+, C2–: Commutating Capacitor Inputs. These
pins require two external capacitors C = 0.1
F: one from
C1+ to C1–, and another from C2+ to C2–. To maintain
charge pump efficiency, the capacitor’s effective series
resistance should be less than 20
.
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