- 您现在的位置：买卖IC网 > PDF目录10092 > LT1781IN (Linear Technology)IC DVR/RCVR 5V RS232 DUAL 16-DIP PDF资料下载
参数资料
| 型号： | LT1781IN |
| 厂商： | Linear Technology |
| 文件页数： | 9/12页 |
| 文件大小： | 0K |
| 描述： | IC DVR/RCVR 5V RS232 DUAL 16-DIP |
| 标准包装： | 25 |
| 类型： | 收发器 |
| 驱动器/接收器数： | 2/2 |
| 规程： | RS232 |
| 电源电压： | 4.5 V ~ 5.5 V |
| 安装类型： | 通孔 |
| 封装/外壳： | 16-DIP（0.300"，7.62mm） |
| 供应商设备封装： | 16-PDIP |
| 包装： | 管件 |
6
LT1780/LT1781
VCC: 5V Input Supply Pin. This pin should be decoupled
with a 0.1
F ceramic capacitor close to the package pin.
Insufficient supply bypassing can result in low output
drive levels and erratic charge pump operation.
GND: Ground Pin.
ON/OFF: A TTL/CMOS Compatible Operating Mode Con-
trol. A logic low puts the LT1780 in SHUTDOWN mode.
Supply current drops to zero and both driver and receiver
outputs assume a high impedance state. A logic high fully
enables the device.
V+: Positive Supply Output (RS232 Drivers).
V+
≈ 2VCC – 1.5V. This pin requires an external charge
storage capacitor C
≥ 0.1F, tied to ground or VCC. Larger
value capacitors may be used to reduce supply ripple. With
multiple transceivers, the V+ and V – pins may be paralleled
into common capacitors.
V–: Negative Supply Output (RS232 Drivers).
V –
≈ –(2VCC – 2.5V). This pin requires an external charge
storage capacitor C
≥ 0.1F. Larger value capacitors may
be used to reduce supply ripple. With multiple transceiv-
ers, the V+ and V – pins may be paralleled into common
capacitors.
TR1 IN, TR2 IN: RS232 Driver Input Pins. These inputs are
TTL/CMOS compatible. Inputs should not be allowed to
float. Tie unused inputs to VCC.
TR1 OUT, TR2 OUT: Driver Outputs at RS232 Voltage
Levels. Driver output swing meets RS232 levels for loads
up to 3k. Slew rates are controlled for lightly loaded lines.
Output current capability is sufficient for load conditions
up to 2500pF. Outputs are in a high impedance state when
in SHUTDOWN mode or VCC = 0V. Outputs are fully short-
circuit protected from V – + 30V to V + – 30V. Applying
higher voltages will not damage the device if the overdrive
is moderately current limited. Short circuits on one
output can load the power supply generator and may
disrupt the signal levels of the other outputs. The driver
outputs are protected against ESD to IEC-1000-4-2
Level 4 discharges.
REC1 IN, REC2 IN: Receiver Inputs. These pins accept
RS232 level signals (
±30V) into a protected 5k terminat-
ing resistor. The receiver inputs are protected against ESD
to IEC-1000-4-2 Level 4 discharges. Each receiver pro-
vides 0.4V of hysteresis for noise immunity. Open receiver
inputs result in a logic high receiver output state.
REC1 OUT, REC2 OUT: Receiver outputs with TTL/CMOS
Voltage Levels. Outputs are in a high impedance state
when in SHUTDOWN mode to allow data line sharing.
Outputs are fully short-circuit protected to ground or VCC
with the power ON, OFF or in the SHUTDOWN mode.
C1+, C1–, C2 +, C2 –: Commutating Capacitor Inputs.
These pins require two external capacitors C
≥ 0.1F: one
from C1+ to C1– and another from C2+ to C2 –. C1 should
be deleted if a separate 12V supply is available and
connected to pin C1+. Similarly, C2 should be deleted if a
separate – 12V supply is connected to pin V –.
PI FU CTIO S
U
UU
相关PDF资料 |
PDF描述 |
|---|---|
| IDT72215LB15PFGI8 | IC FIFO 512X18 SYNC 15NS 64-TQFP |
| VI-2TX-MY | CONVERTER MOD DC/DC 5.2V 50W |
| MS3101R28-21P | CONN RCPT 37POS PANEL MNT W/PINS |
| LT1780IN | IC DVR/RCVR 5V RS232 DUAL 18-DIP |
| LT1780IN#PBF | IC DVR/RCVR 5V RS232 DUAL 18-DIP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1781IN#PBF | 功能描述:IC DVR/RCVR 5V RS232 DUAL 16-DIP 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 |
| LT1781IS | 功能描述:IC DVR/RCVR 5V RS232 DUAL 16SOIC 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 |
| LT1781IS#PBF | 功能描述:IC DVR/RCVR 5V RS232 DUAL 16SOIC 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:1 系列:- 类型:线路收发器 驱动器/接收器数:5/3 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-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC 包装:Digi-Reel® 产品目录页面:918 (CN2011-ZH PDF) 其它名称:296-25096-6 |
| LT1781IS#TR | 功能描述:IC TXRX 5V RS232 DUAL LP 16SOIC 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 |
| LT1781IS#TRPBF | 功能描述:IC DVR/RCVR 5V RS232 DUAL 16SOIC 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 |
发布紧急采购，3分钟左右您将得到回复。