參數(shù)資料
型號(hào)： MAX208ECWG
廠商： Maxim Integrated Products
文件頁(yè)數(shù)： 2/26頁(yè)
文件大?。?/td> 0K
描述： IC TXRX RS232 5V 24-SOIC
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 30
類型： 收發(fā)器
驅(qū)動(dòng)器/接收器數(shù)： 4/4
規(guī)程： RS232
電源電壓： 4.5 V ~ 5.5 V
安裝類型： 表面貼裝
封裝/外殼： 24-SOIC（0.295"，7.50mm 寬）
供應(yīng)商設(shè)備封裝： 24-SOIC W
包裝： 管件
±15kV ESD-Protected, +5V RS-232 Transceivers
When in low-power shutdown mode, the MAX205E/
MAX206E/MAX211E/MAX213E/MAX241E driver outputs
are turned off and draw only leakage currents—even if
they are back-driven with voltages between 0V and
12V. Below -0.5V in shutdown, the transmitter output is
diode-clamped to ground with a 1k
Ω series
impedance.
RS-232 Receivers
The receivers convert the RS-232 signals to CMOS-logic
output levels. The guaranteed 0.8V and 2.4V receiver
input thresholds are significantly tighter than the ±3V
thresholds required by the EIA/TIA-232E specification.
This allows the receiver inputs to respond to TTL/CMOS-
logic levels, as well as RS-232 levels.
The guaranteed 0.8V input low threshold ensures that
receivers shorted to ground have a logic 1 output. The
5k
Ω input resistance to ground ensures that a receiver
with its input left open will also have a logic 1 output.
Receiver inputs have approximately 0.5V hysteresis.
This provides clean output transitions, even with slow
rise/fall-time signals with moderate amounts of noise
and ringing.
In shutdown, the MAX213E’s R4 and R5 receivers have
no hysteresis.
Shutdown and Enable Control
(MAX205E/MAX206E/MAX211E/
MAX213E/MAX241E)
In shutdown mode, the charge pumps are turned off,
V+ is pulled down to VCC, V- is pulled to ground, and
the transmitter outputs are disabled. This reduces
supply current typically to 1A (15A for the MAX213E).
The time required to exit shutdown is under 1ms, as
shown in Figure 5.
Receivers
All MAX213E receivers, except R4 and R5, are put into
a high-impedance state in shutdown mode (see Tables
1a and 1b). The MAX213E’s R4 and R5 receivers still
function in shutdown mode. These two awake-in-
shutdown receivers can monitor external activity while
maintaining minimal power consumption.
The enable control is used to put the receiver outputs into
a high-impedance state, to allow wire-OR connection of
two EIA/TIA-232E ports (or ports of different types) at the
UART. It has no effect on the RS-232 drivers or the
charge pumps.
Note: The enable control pin is active low for the
MAX211E/MAX241E (
EN), but is active high for the
MAX213E (EN). The shutdown control pin is active high
for the MAX205E/MAX206E/MAX211E/MAX241E
(SHDN), but is active low for the MAX213E (
SHDN).
C1-
IL-
RL-
V+
S1
V -
fCLK
S2
S5
S6
C1
C3
C2
IL +
RL +
S3
S4
S7
S8
C4
C1+
GND
VCC
C2-
C2+
PART
fCLK
(kHz)
MAX202E
MAX211E/213E
MAX232E
MAX203E
230
MAX205E–208E
200
140
MAX241E
30
230
Figure 4. Charge-Pump Diagram
10
Maxim Integrated
MAX202E–MAX213E, MAX232E/MAX241E
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX208ECWG+ 功能描述:RS-232接口集成電路 15kV ESD-Protected 5V RS232 Transceiver RoHS:否 制造商:Exar 數(shù)據(jù)速率:52 Mbps 工作電源電壓:5 V 電源電流:300 mA 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝:
MAX208ECWG+ 制造商:Maxim Integrated Products 功能描述:IC RS232 TRANSCEIVER 120KBPS 5
MAX208ECWG+T 功能描述:RS-232接口集成電路 15kV ESD-Protected 5V RS232 Transceiver RoHS:否 制造商:Exar 數(shù)據(jù)速率:52 Mbps 工作電源電壓:5 V 電源電流:300 mA 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝:
MAX208ECWG-T 功能描述:RS-232接口集成電路 RoHS:否 制造商:Exar 數(shù)據(jù)速率:52 Mbps 工作電源電壓:5 V 電源電流:300 mA 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝:
MAX208EEAG 功能描述:RS-232接口集成電路 RoHS:否 制造商:Exar 數(shù)據(jù)速率:52 Mbps 工作電源電壓:5 V 電源電流:300 mA 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝:
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