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| 型号： | MAX214EWI+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 10/12页 |
| 文件大小： | 0K |
| 描述： | IC TXRX RS-232 PROG 28-SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 25 |
| 类型： | 收发器 |
| 驱动器/接收器数： | 3/5 |
| 规程： | RS232 |
| 电源电压： | 4.5 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 W |
| 包装： | 管件 |
| 产品目录页面： | 1400 (CN2011-ZH PDF) |
MAX214
Programmable DTE/DCE,
+5V RS-232 Transceiver
_______________________________________________________________________________________
7
RS-232 Drivers
With VCC = 5V, the typical driver output voltage swing
is ±8V when loaded with a nominal 5k
RS-232
receiver. Under worst-case operating conditions
(including 116kbps data rate, 3k
2500pF load,
VCC = 4.5V, maximum rated temperature) the output
swing is guaranteed to meet the ±5V minimum speci-
fied by EIA/TIA-232 and V.28. The open-circuit output
voltage swing ranges from (V+ - 0.6V) to V-.
Input thresholds are both CMOS and TTL compatible.
The inputs of unused drivers can be left unconnected
because 400k
pull-up resistors to VCC are included
on-chip. Since all drivers invert, the pull-up resistors
force the outputs of unused drivers low. The input
pull-up resistors typically source 10A; in shutdown
mode, they are disconnected to reduce supply current.
When in low-power shutdown mode, the driver outputs
are turned off and their leakage current is less than
1A, even if the transmitter output is back-driven with
voltages up to ±15V.
RS-232 Receivers
The receivers convert the RS-232 signals to
CMOS-logic levels. They invert, to match the inversion
of RS-232 drivers. The guaranteed receiver input
thresholds are significantly tighter than the ±3V
thresholds required by the EIA/TIA-232E specification,
V+
GND
MAX214
1F
VCC
1F
Rx
Tx
1F
C1+
C1-
C2+
C2-
+5V
+5.5V
TOUT
ROUT
400k
5k
ISHDN
0V OR +5.5V
DRIVE
1F
3k
+5.5V
RIN
TIN
CAPACITORS MAY BE
POLARIZED OR UNPOLARIZED
DTE/DCE
+5.5V
V-
+5.5V
SHDN
HI-Z
Figure 1. MAX214 Shutdown-Current Test Circuit
C1-
IL -
RL -
V+
S1
V -
S2
S5
S6
C1
C3
C2
IL +
RL +
S3
S4
S7
S8
C4
C1+
GND
VCC
C2-
C2+
120kHz
Figure 2. Charge-Pump Diagram
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX214EWI+ | 功能描述:RS-232接口集成电路 Prog DTE/DCE 5V RS232 Transceiver RoHS:否 制造商:Exar 数据速率:52 Mbps 工作电源电压:5 V 电源电流:300 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:LQFP-100 封装: |
| MAX214EWI+T | 功能描述:RS-232接口集成电路 Prog DTE/DCE 5V RS232 Transceiver RoHS:否 制造商:Exar 数据速率:52 Mbps 工作电源电压:5 V 电源电流:300 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:LQFP-100 封装: |
| MAX214EWI-T | 功能描述:RS-232接口集成电路 RoHS:否 制造商:Exar 数据速率:52 Mbps 工作电源电压:5 V 电源电流:300 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:LQFP-100 封装: |
| MAX2150 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Evaluation Kit |
| MAX2150_06 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Wideband I/Q Modulator with Sigma-Delta Fractional-N Synthesizer |
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