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鍙冩暩(sh霉)璩囨枡
| 鍨嬭櫉锛� | MAX203ECWP |
| 寤犲晢锛� | Maxim Integrated Products |
| 鏂囦欢闋佹暩(sh霉)锛� | 26/26闋� |
| 鏂囦欢澶�?銆�?/td> | 0K |
| 鎻忚堪锛� | IC TXRX RS232 5V ESD-PROT 20SOIC |
| 鐢�(ch菐n)鍝佸煿瑷撴ā濉婏細 | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 妯欐簴鍖呰锛� | 36 |
| 椤炲瀷锛� | 鏀剁櫦(f膩)鍣� |
| 椹�(q奴)鍕曞櫒/鎺ユ敹鍣ㄦ暩(sh霉)锛� | 2/2 |
| 瑕�(gu墨)绋嬶細 | RS232 |
| 闆绘簮闆诲锛� | 4.75 V ~ 5.25 V |
| 瀹夎椤炲瀷锛� | 琛ㄩ潰璨艰 |
| 灏佽/澶栨锛� | 20-SOIC锛�0.295"锛�7.50mm 瀵級 |
| 渚涙噳鍟嗚ō鍌欏皝瑁濓細 | 20-SOIC W |
| 鍖呰锛� | 绠′欢 |
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卤15kV ESD-Protected, +5V RS-232 Transceivers
V+
MAX2_ _E
0.1
渭F*
VCC
0.1
渭F*
T_
R_
0.1
渭F*
C1+
C1-
C2+
C2-
VCC
T_OUT
R_OUT
EN (EN)
SHDN (SHDN)
400k
惟
5k
惟
0.1
渭F*
0.1
*
3k
惟
+5V
R_IN
T_IN
MINIMUM SLEW-RATE TEST CIRCUIT
0V (+5V)
2500pF
V-
V+
0.1
渭F*
VCC
0.1
渭F*
R_
T_
0.1
渭F*
C1+
C1-
C2+
C2-
VCC
T_OUT
R_OUT
EN (EN)
SHDN (SHDN)
400k
惟
5k
惟
0.1
渭F*
0.1
渭F*
7k
惟
+5V
R_IN
T_IN
MAXIMUM SLEW-RATE TEST CIRCUIT
0V (+5V)
50pF
V-
( ) ARE FOR MAX213E
* 1
渭F FOR MAX232E/MAX241E
MAX2_ _E
TRANSMITTER INPUT PULL-UP RESISTORS, ENABLE, AND SHUTDOWN ARE NOT PROVIDED ON THE MAX202E, MAX203E, AND MAX232E.
ENABLE AND SHUTDOWN ARE NOT PROVIDED ON THE MAX207E AND MAX208E.
Figure 3. Transition Slew-Rate Circuit
_______________Detailed Description
The MAX202E鈥揗AX213E, MAX232E/MAX241E consist of
three sections: charge-pump voltage converters,
drivers (transmitters), and receivers. These E versions
provide extra protection against ESD. They survive
卤15kV discharges to the RS-232 inputs and outputs,
tested using the Human Body Model. When tested
according to IEC1000-4-2, they survive 卤8kV contact-
discharges and 卤15kV air-gap discharges. The rugged
E versions are intended for use in harsh environments
or applications where the RS-232 connection is
frequently changed (such as notebook computers). The
standard (non-鈥淓鈥�) MAX202, MAX203, MAX205鈥�
MAX208, MAX211, MAX213, MAX232, and MAX241 are
recommended for applications where cost is critical.
+5V to 卤10V Dual Charge-Pump
Voltage Converter
The +5V to 卤10V conversion is performed by dual
charge-pump voltage converters (Figure 4). The first
charge-pump converter uses capacitor C1 to double
the +5V into +10V, storing the +10V on the output filter
capacitor, C3. The second uses C2 to invert the +10V
into -10V, storing the -10V on the V- output filter
capacitor, C4.
In shutdown mode, V+ is internally connected to VCC by
a 1k
惟 pull-down resistor, and V- is internally connected
to ground by a 1k
惟 pull up resistor.
RS-232 Drivers
With VCC = 5V, the typical driver output voltage swing
is 卤8V when loaded with a nominal 5k
惟 RS-232
receiver. The output swing is guaranteed to meet
EIA/TIA-232E and V.28 specifications that call for 卤5V
minimum output levels under worst-case conditions.
These include a 3k
惟 load, minimum VCC, and
maximum operating temperature. The open-circuit
output voltage swings from (V+ - 0.6V) to V-.
Input thresholds are CMOS/TTL compatible. The
unused drivers鈥� inputs on the MAX205E鈥揗AX208E,
MAX211E, MAX213E, and MAX241E can be left
unconnected because 400k
惟 pull up resistors to VCC
are included on-chip. Since all drivers invert, the pull up
resistors force the unused drivers鈥� outputs low. The
MAX202E, MAX203E, and MAX232E do not have pull
up resistors on the transmitter inputs.
Maxim Integrated
9
MAX202E鈥揗AX213E, MAX232E/MAX241E
鐩搁棞(gu膩n)PDF璩囨枡 |
PDF鎻忚堪 |
|---|---|
| MAX202EWE | IC TXRX RS232 5V 16-SOIC |
| M83723/76W10056 | CONN PLUG 5POS STRAIGHT W/PINS |
| MAX202ESE | IC TXRX RS232 5V 16-SOIC |
| DS232AE | IC TXRX DUAL RS-232 5V 20-TSSOP |
| VI-26V-MY-S | CONVERTER MOD DC/DC 5.8V 50W |
鐩搁棞(gu膩n)浠ｇ悊鍟�/鎶€琛�(sh霉)鍙冩暩(sh霉) |
鍙冩暩(sh霉)鎻忚堪 |
|---|---|
| MAX203ECWP+ | 鍒堕€犲晢:Maxim Integrated Products 鍔熻兘鎻忚堪:Dual Transmitter/Receiver RS-232 20-Pin SOIC W Bulk 鍒堕€犲晢:Maxim Integrated Products 鍔熻兘鎻忚堪:TRANSCEIVER DUAL RS232 SMD SOIC20 鍒堕€犲晢:Maxim Integrated Products 鍔熻兘鎻忚堪:TRANSCEIVER DUAL RS232, SMD, SOIC20 |
| MAX203ECWP+G36 | 鍔熻兘鎻忚堪:RS-232鎺ュ彛闆嗘垚闆昏矾 15kV ESD-Protected 5V RS232 Transceiver RoHS:鍚� 鍒堕€犲晢:Exar 鏁�(sh霉)鎿�(j霉)閫熺巼:52 Mbps 宸ヤ綔闆绘簮闆诲:5 V 闆绘簮闆绘祦:300 mA 宸ヤ綔婧害鑼冨湇:- 40 C to + 85 C 瀹夎棰ㄦ牸:SMD/SMT 灏佽 / 绠遍珨:LQFP-100 灏佽: |
| MAX203ECWP+G36 | 鍒堕€犲晢:Maxim Integrated Products 鍔熻兘鎻忚堪:IC RS232 TRANSCEIVER 120KBPS 5 |
| MAX203ECWP+TG36 | 鍔熻兘鎻忚堪:RS-232鎺ュ彛闆嗘垚闆昏矾 15kV ESD-Protected 5V RS232 Transceiver RoHS:鍚� 鍒堕€犲晢:Exar 鏁�(sh霉)鎿�(j霉)閫熺巼:52 Mbps 宸ヤ綔闆绘簮闆诲:5 V 闆绘簮闆绘祦:300 mA 宸ヤ綔婧害鑼冨湇:- 40 C to + 85 C 瀹夎棰ㄦ牸:SMD/SMT 灏佽 / 绠遍珨:LQFP-100 灏佽: |
| MAX203ECWP-T | 鍔熻兘鎻忚堪:RS-232鎺ュ彛闆嗘垚闆昏矾 RoHS:鍚� 鍒堕€犲晢:Exar 鏁�(sh霉)鎿�(j霉)閫熺巼:52 Mbps 宸ヤ綔闆绘簮闆诲:5 V 闆绘簮闆绘祦:300 mA 宸ヤ綔婧害鑼冨湇:- 40 C to + 85 C 瀹夎棰ㄦ牸:SMD/SMT 灏佽 / 绠遍珨:LQFP-100 灏佽: |
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