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参数资料
| 型号： | LTC1348CG |
| 厂商： | Linear Technology |
| 文件页数： | 6/8页 |
| 文件大小： | 0K |
| 描述： | IC TXRX 3.3V/5V RS232 28-SSOP |
| 标准包装： | 47 |
| 类型： | 收发器 |
| 驱动器/接收器数： | 3/5 |
| 规程： | RS232 |
| 电源电压： | 3 V ~ 5.5 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： | 管件 |
6
LTC1348
Figure 1. Driver Propagation Delay Timing
Figure 2. Receiver Propagation Delay Timing
SWITCHI G TI E WAVEFOR S
WW
U
1.4V
0V
VCC
0V
V+
V–
0V
DRIVER
INPUT
DRIVER
OUTPUT
1.4V
t HLD
t LHD
LTC1348 F01
0.8V
VCC
0V
2.4V
RX
INPUT
RX
OUTPUT
1.3V
t HLR
1.7V
t LHR
LTC1348 F02
VCC
0V
APPLICATIONS INFORMATION
WU
U
TEST CIRCUITS
Figure 3. Driver Timing Test Load
RX
RX INPUT
51pF
RX
OUTPUT
LTC1348 F04
Figure 4. Receiver Timing Test Load
DRIVER
INPUT
3k
51pF
DRIVER
OUTPUT
LTC1348 F03
Power Supply
The LTC1348 includes an onboard voltage-tripling charge
pump capable of generating
±8V from a single 3.3V
supply. This allows the LTC1348 drivers to provide guar-
anteed
±5V RS232-compliant voltage levels with a 3.3V
supply. With all outputs loaded with 3k
, the LTC1348
can typically swing
±5V with voltages as low as 2.85V. It
will meet the
±3.7V EIA562 levels with supply voltages as
low as 2.2V. The charge pump requires three external
flying capacitors to operate; 0.1
F ceramic capacitors are
adequate for most applications. For applications requiring
extremely high data rates or abnormally heavy output
loads, 0.33
F flying capacitors are recommended. Bypass
and output capacitor values should match those of the
flying capacitors and all capacitors should be mounted as
close to the package as possible.
LT1348 TC
RS232 LINE PINS
PROTECTED TO
±10kV
0.1
F
0.1
F
0.1
F
0.1
F
0.1
F
LTC1348
1
2
3
4
5
6
7
8
9
10
11
12
13
14
DR1 OUT
RX1 IN
DR2 OUT
RX2 IN
RX3 IN
RX4 IN
DR3 OUT
RX5 IN
28
27
26
25
24
23
22
21
20
19
18
17
16
15
DR1 IN
RX1 OUT
DR2 IN
RX2 OUT
RX3 OUT
RX4 OUT
DR3 IN
RX5 OUT
DREN
RXEN
V–
V+
VCC
GND
0.1
F
C2+
C3+
C3–
C2–
C1+
C1–
ESD Test Circuit
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC1348CG#PBF | 功能描述:IC TXRX 3.3V/5V RS232 28-SSOP RoHS:是 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 产品培训模块:RS-232 & USB Transceiver 标准包装:2,000 系列:- 类型:收发器 驱动器/接收器数:1/1 规程:RS232 电源电压:3 V ~ 5.5 V 安装类型:表面贴装 封装/外壳:16-SSOP（0.209"，5.30mm 宽） 供应商设备封装:16-SSOP 包装:带卷 (TR) 其它名称:296-19849-2 |
| LTC1348CG#TR | 功能描述:IC TXRX RS232 3.3-5V LPWR 28SSOP RoHS:否 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 标准包装:27 系列:- 类型:收发器 驱动器/接收器数:3/3 规程:RS232，RS485 电源电压:4.75 V ~ 5.25 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:管件 |
| LTC1348CG#TRPBF | 功能描述:IC TXRX 3.3V/5V RS232 28-SSOP RoHS:是 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 标准包装:27 系列:- 类型:收发器 驱动器/接收器数:3/3 规程:RS232，RS485 电源电压:4.75 V ~ 5.25 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:管件 |
| LTC1348CGPBF | 制造商:LT 功能描述:Pb Free |
| LTC1348CS | 制造商:Linear Technology 功能描述:Order exact replacement LTC1348CSW |
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