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参数资料
| 型号： | MAX3238EEAI |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 10/14页 |
| 文件大小： | 0K |
| 描述： | IC TXRX RS232 250KBPS 28-SSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 46 |
| 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-SSOP（0.209"，5.30mm 宽） |
| 供应商设备封装： | 28-SSOP |
| 包装： | 管件 |
MAX3238E/MAX3248E
+3.0V to +5.5V, 10nA, 250kbps RS-232 Transceivers
with ±15kV ESD-Protected I/O and Logic Pins
_______________________________________________________________________________________
5
Typical Operating Characteristics (continued)
(VCC = +3.3V, 250kbps data rate, 0.1F capacitors, all transmitters loaded with 3k
, TA = +25°C, unless otherwise noted.)
______________________________________________________________Pin Description
Output of the Valid Signal Detector. A logic 1 indicates if a valid RS-232 level is present on
receiver inputs.
INVALID
15
Noninverting Complementary Receiver Output. Always active.
R1OUTB
16
TTL/CMOS Transmitter Inputs (T5IN–T1IN). This pin has an active positive feedback resis-
tor. Once driven to a valid logic level, the pin retains that level if left unconnected until
power is cycled.
T_IN
17, 19, 22, 23, 24
TTL/CMOS Receiver Outputs (R3OUT–R1OUT)
R_OUT
18, 20, 21
Negative Terminal of Voltage-Doubler Charge-Pump Capacitor
C1-
25
RS-232 Transmitter Outputs (T1OUT–T5OUT)
T_OUT
5, 6, 7, 10, 12
RS-232 Receiver Inputs (R1IN–R3IN)
R_IN
8, 9, 11
Force-On Input. Drive high to override AutoShutdown Plus, keeping transmitters and
receivers on (FORCEOFF must be high) (Table 1). This pin has an active positive feedback
resistor. Once driven to a valid logic level, the pin retains that level if left unconnected until
power is cycled.
FORCEON
13
Force-Off Input. Drive low to shut down transmitters, receivers (except R1OUTB), and on-
board supply. This overrides AutoShutdown Plus and FORCEON (Table 1). This pin has an
active positive feedback resistor. Once driven to a valid logic level, the pin retains that
level if left unconnected until power is cycled.
FORCEOFF
14
-5.5V Generated by the Charge Pump
V-
4
Negative Terminal of Inverting Charge-Pump Capacitor
C2-
3
PIN
Ground
GND
2
Positive Terminal of Inverting Charge-Pump Capacitor
C2+
1
FUNCTION
NAME
26
VCC
+3.0V to +5.5V Supply Voltage
27
V+
+5.5V Generated by the Charge Pump
28
C1+
Positive Terminal of Voltage-Doubler Charge-Pump Capacitor
-6
-2
-4
2
0
4
6
-3
-5
1
-1
3
5
2.0
3.0
3.5
2.5
4.0
4.5
5.0
TRANSMITTER OUTPUT VOLTAGE
vs. SUPPLY VOLTAGE
MAX3238E
toc04
SUPPLY VOLTAGE (V)
TRANSMITTER
OUTPUT
VOLTAGE
(V)
VOUT-
VOUT+
1 TRANSMITTER 250kbps
4 TRANSMITTERS 15.6kbps
ALL TRANSMITTERS LOADED
WITH 3k
+1000pF
0
20
10
30
40
50
2.0
3.0
3.5
2.5
4.0
4.5
5.0
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX3238E
toc05
SUPPLY VOLTAGE (V)
SUPPLY
CURRENT
(mA)
1 TRANSMITTER 250kbps
4 TRANSMITTERS 15.6kbps
ALL TRANSMITTERS LOADED
WITH 3k
+1000pF
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX3238EEAI+ | 功能描述:RS-232接口集成电路 3-5.5V 250kbps 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: |
| MAX3238EEAI+T | 功能描述:RS-232接口集成电路 3-5.5V 250kbps 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: |
| MAX3238EEAI-T | 功能描述:RS-232接口集成电路 3-5.5V 250kbps 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: |
| MAX3238EECAI | 制造商:Exar Corporation 功能描述:Line Transceiver, 5-Driver, 3-Receiver, 28 Pin, Plastic, SSOP |
| MAX3238EEEAI | 制造商:Exar Corporation 功能描述:Line Transceiver, 5-Driver, 3-Receiver, 28 Pin, Plastic, SSOP |
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