参数资料
型号: LTC1386CS#TR
厂商: Linear Technology
文件页数: 4/8页
文件大小: 0K
描述: IC TXRX EIA/TIA562 3.3V 16SOIC
标准包装: 2,500
类型: 收发器
驱动器/接收器数: 2/2
规程: RS562
电源电压: 3.3V
安装类型: 表面贴装
封装/外壳: 16-SOIC(0.154",3.90mm 宽)
供应商设备封装: 16-SOIC
包装: 带卷 (TR)
4
LTC1386
1386fa
VCC: 3.3V Input Supply Pin. This pin should be decoupled
with a 0.1F ceramic capacitor.
GND: Ground Pin.
V+: Positive Supply Output (EIA/TIA562 Drivers). V+
2VCC – 1V. This pin requires an external capacitor C =
0.1F for charge storage. The capacitor may be tied to
ground or VCC. With multiple devices, the V + and V pins
may share a common capacitor. 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
– 1.3V). This pin requires an external capacitor C = 0.1F
for charge storage.
C1+, C1, C2+, C2: Commutating Capacitor Inputs. These
pins require two external capacitors C = 0.1F: one from
C1+ to C1and another from C2+ to C2 . To maintain
charge pump efficiency, the capacitor’s effective series
resistance should be less than 2.
TR IN: EIA/TIA562 Driver Input Pins. Inputs are TTL/
CMOS compatible. The inputs of unused drivers can be left
unconnected since 300k input pull-up resistors to VCC are
included on chip.
TR OUT: Driver Outputs at EIA/TIA562 Voltage Levels.
The driver outputs are protected against ESD to ±10kV for
human body model discharges.
RX IN: Receiver Inputs. These pins can be forced to ±25V
without damage. The receiver inputs are protected against
ESD to ±10kV for human body model discharges. Each
receiver provides 0.4V of hysteresis for noise immunity.
RX OUT: Receiver Outputs with TTL/CMOS Voltage
Levels.
Figure 1. Driver Propagation Delay Timing
Figure 2. Receiver Propagation Delay Timing
SWITCHI G TI E WAVEFOR S
UW
W
1.4V
0V
VCC
0V
V+
V
0V
DRIVER
INPUT
DRIVER
OUTPUT
1.4V
tHLD
tLHD
LTC1386 F01
0.8V
VCC
0V
2.4V
RX
INPUT
RX
OUTPUT
1.3V
tHLR
1.7V
tLHR
LTC1386 F02
VCC
0V
UU
U
PI FU CTIO S
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