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| 型号： | MAX249EQH+TD |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 37/38页 |
| 文件大小： | 0K |
| 描述： | IC RS-232 DRVR/RCVR 44-PLCC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 500 |
| 类型： | 收发器 |
| 驱动器/接收器数： | 6/10 |
| 规程： | RS232 |
| 电源电压： | 4.75 V ~ 5.25 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 44-LCC（J 形引线） |
| 供应商设备封装： | 44-PLCC（16.59x16.59） |
| 包装： | 带卷 (TR) |
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Input Logic-Low Voltage
+5V-Powered, Multichannel RS-232
Drivers/Receivers
ABSOLUTE MAXIMUM RATINGS—MAX225/MAX244–MAX249
ELECTRICAL CHARACTERISTICS—MAX225/MAX244–MAX249
(MAX225, VCC = +5.0V ±5%; MAX244–MAX249, VCC = +5.0V ±10%, external capacitors C1–C4 = 1F; TA = TMIN to TMAX; unless
otherwise noted.) (Note 7)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
(Voltages referenced to GND.)
Supply Voltage (VCC) ...............................................-0.3V to +6V
Input Voltages
TIN ENA, ENB, ENR, ENT, ENRA,
ENRB, ENTA, ENTB..................................-0.3V to (VCC + 0.3V)
RIN .....................................................................................±25V
TOUT (Note 6)....................................................................±15V
ROUT........................................................-0.3V to (VCC + 0.3V)
Short Circuit Duration (one output at a time)
TOUT to GND ...........................................................Continuous
ROUT to GND...........................................................Continuous
Continuous Power Dissipation (TA = +70°C)
28-Pin Wide SO (derate 12.50mW/°C above +70°C) .............1W
40-Pin Plastic DIP (derate 11.11mW/°C above +70°C) ...611mW
44-Pin PLCC (derate 13.33mW/°C above +70°C) ...........1.07W
Operating Temperature Ranges
MAX225C_ _, MAX24_C_ _ ..................................0°C to +70°C
MAX225E_ _, MAX24_E_ _ ...............................-40°C to +85°C
Storage Temperature Range .............................-65°C to +160°C
Lead Temperature (soldering,10s)) .................................+300°C
Soldering Temperature (reflow)
40 PDIP (P40M-2) ..........................................................+225°C
All other lead(Pb)-free packages...................................+260°C
All other packages containing lead(Pb) ........................+240°C
VCC = 0V,
VOUT = ±15V
A
Tables 1a–1d
±0.01
±25
Normal operation
Shutdown
Tables 1a–1d, normal operation
All transmitter outputs loaded with 3k
Ω to GND
VENA, VENB, VENT, VENTA,
VENTB = VCC, VOUT = ±15V
V
RS-232 Input Hysteresis
RS-232 Input Logic-Low Voltage
V
±5
±7.5
Output Voltage Swing
Output Leakage Current (Shutdown)
±0.01
±25
Ω
300
10M
VCC = V+ = V- = 0V, VOUT = ±2V (Note 8)
Transmitter Output Resistance
A
PARAMETER
±0.05
±0.10
MIN
TYP
MAX
UNITS
Normal operation, outputs disabled,
Tables 1a–1d, 0V
≤ VOUT ≤ VCC, VENR_ = VCC
TTL/CMOS Output Leakage Current
10
30
Sinking VOUT = VCC
mA
-2
-10
Sourcing VOUT = VGND
V
3.5
VCC - 0.2
IOUT = -1.0mA
TTL/CMOS Output Voltage High
V
0.2
0.4
IOUT = 3.2mA
TTL/CMOS Output Voltage Low
k
Ω
35
7
0.2
0.5
1.0
VCC = +5V
1.4
0.8
V
TTL/CMOS Output Short-Circuit Current
V
1.8
2.4
0.8
1.3
VCC = +5V
RS-232 Input Resistance
V
±25
RS-232 Input Voltage Operating Range
mA
±7
±30
VOUT = 0V
Output Short-Circuit Current
kbps
120
64
Data Rate
CONDITIONS
VCC = +5V
A
±0.01
±1
Logic Pullup/lnput Current
10
50
Tables 1a–1d
RS-232 Input Logic-High Voltage
V
2
1.4
Input Logic-High Voltage
RS-232 TRANSMITTERS
RS-232 RECEIVERS
Note 6: Input voltage measured with transmitter output in a high-impedance state, shutdown, or VCC = 0V.
8
Maxim Integrated
MAX220–MAX249
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